{"id":9450,"date":"2025-12-25T18:01:42","date_gmt":"2025-12-25T10:01:42","guid":{"rendered":"https:\/\/www.cncmachiningshops.com\/?p=9450"},"modified":"2026-01-01T10:24:18","modified_gmt":"2026-01-01T02:24:18","slug":"1018-steel","status":"publish","type":"post","link":"https:\/\/www.cncmachiningshops.com\/pt\/1018-steel\/","title":{"rendered":"O Que \u00c9 o A\u00e7o 1018? Propriedades, Composi\u00e7\u00e3o, Aplica\u00e7\u00f5es e Guia de Sele\u00e7\u00e3o para Engenharia"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1280px + 80px );margin-left: calc(-80px \/ 2 );margin-right: calc(-80px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:40px;--awb-margin-bottom-large:0px;--awb-spacing-left-large:40px;--awb-width-medium:100%;--awb-spacing-right-medium:40px;--awb-spacing-left-medium:40px;--awb-width-small:100%;--awb-spacing-right-small:40px;--awb-spacing-left-small:40px;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><div data-page-id=\"KNhedACkRoKtMkxYvGhcAVHMnaf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"true\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Quando engenheiros e fabricantes precisam de um material previs\u00edvel, barato e compat\u00edvel com tudo, eles geralmente escolhem o a\u00e7o 1018. O 1018 \u00e9 um a\u00e7o de baixo carbono (frequentemente chamado de a\u00e7o doce). Ele n\u00e3o \u00e9 escolhido por ter uma propriedade extrema que o destaque, mas porque tem uma boa combina\u00e7\u00e3o de usinabilidade, soldabilidade e consist\u00eancia mec\u00e2nica que atende a uma ampla gama de necessidades industriais.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">No que diz respeito \u00e0 fabrica\u00e7\u00e3o, o a\u00e7o carbono 1018 funciona bem para usinagem CNC, perfura\u00e7\u00e3o, torneamento e fresamento. Ele tem baixo teor de carbono, o que significa que os cavacos se formam de maneira est\u00e1vel, as ferramentas se desgastam menos rapidamente e o acabamento superficial \u00e9 bom sem precisar de ferramentas especiais ou configura\u00e7\u00f5es de corte agressivas. Ao mesmo tempo, \u00e9 f\u00e1cil de soldar com m\u00e9todos comuns como MIG e TIG, podendo ser usado para conjuntos, estruturas e pe\u00e7as que precisam ser unidas ap\u00f3s a usinagem.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c9 importante lembrar que o 1018 n\u00e3o \u00e9 uma escolha \u201cgen\u00e9rica\u201d ou descuidada de material. Engenheiros o escolhem propositalmente quando n\u00e3o precisam de alta resist\u00eancia, dureza extrema ou desempenho avan\u00e7ado de liga. O a\u00e7o 1018 \u00e9 melhor para eixos, suportes, chapas e pe\u00e7as estruturais onde o controle de custos, a consist\u00eancia dimensional e a efici\u00eancia de fabrica\u00e7\u00e3o s\u00e3o mais importantes do que propriedades mec\u00e2nicas de pico.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Este guia analisa o a\u00e7o 1018 sob tr\u00eas \u00e2ngulos diferentes: o b\u00e1sico do material, como ele se comporta durante a fabrica\u00e7\u00e3o e a l\u00f3gica por tr\u00e1s da escolha dele para projetos de engenharia. Isso ajudar\u00e1 projetistas, engenheiros e equipes de compras a entender n\u00e3o apenas o que ele \u00e9, mas tamb\u00e9m quando e por que faz sentido us\u00e1-lo.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Que \u00c9 o A\u00e7o 1018? \u2014 Normas e Defini\u00e7\u00f5es para Classes<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A classe de a\u00e7o laminado a frio mais comum no mundo \u00e9 o a\u00e7o 1018. O sistema de classifica\u00e7\u00e3o de a\u00e7o carbono AISI\/SAE tem uma defini\u00e7\u00e3o para ele.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u201c10\u201d:<\/span><\/strong><span class=\"ng-star-inserted\"> Isso significa que o a\u00e7o \u00e9 a\u00e7o carbono comum e n\u00e3o possui elementos de liga principais.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u201c18\u201d<\/span><\/strong><span class=\"ng-star-inserted\"> significa que o teor de carbono \u00e9 de cerca de 0,18%.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 \u00e9 definitivamente a\u00e7o doce porque tem um n\u00edvel de carbono muito baixo. \u201cA\u00e7o doce\u201d n\u00e3o significa baixa qualidade no campo da engenharia. Em vez disso, refere-se a a\u00e7os fabricados para permanecerem d\u00facteis, conform\u00e1veis e sold\u00e1veis, o que n\u00e3o \u00e9 o caso das classes de alto carbono, que s\u00e3o fr\u00e1geis.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Normas Globais e Seus Equivalentes<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 \u00e9 similar a estas normas para fornecimento internacional:<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">UNS:<\/span><\/strong><span class=\"ng-star-inserted\"> G10180<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">ASTM:<\/span><\/strong><span class=\"ng-star-inserted\"> A108 (Norma para barras de a\u00e7o acabadas a frio, carbono e liga)<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">EN \/ DIN:<\/span><\/strong><span class=\"ng-star-inserted\"> C15E \/ 1.1141<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">JIS:<\/span><\/strong><span class=\"ng-star-inserted\"> S15C ou S20C<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Perce\u00e7\u00e3o da engenharia:<\/span><\/strong><span class=\"ng-star-inserted\"> O 1018 \u00e9 diferente de classes de a\u00e7o estrutural como o A36 porque seu limite de escoamento \u00e9 o que o define. Isso facilita a usinagem de pe\u00e7as com toler\u00e2ncias apertadas, pois seu comportamento \u00e9 mais est\u00e1vel e previs\u00edvel.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A composi\u00e7\u00e3o qu\u00edmica do a\u00e7o 1018 e o que ela significa para a engenharia<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Para entender por que o 1018 se comporta da maneira que se comporta, voc\u00ea precisa conhecer a qu\u00edmica. Ele precisa de uma qu\u00edmica \u201climpa\u201d com poucas impurezas para garantir que o processamento seja sempre o mesmo.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tabela 1: Composi\u00e7\u00e3o Qu\u00edmica Comum (% em peso)<\/span><\/strong><\/p>\n<div class=\"table-container ng-star-inserted\">\n<table>\n<tbody>\n<tr class=\"table-header ng-star-inserted\">\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Elemento<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Quantidade M\u00e9dia<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Fun\u00e7\u00e3o de engenheiro<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Carbono (C)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">0.15\u20130.20<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O principal endurecedor. Mantido baixo para garantir ductilidade e soldabilidade.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mangan\u00eas (Mn)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">0.60\u20130.90<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Aumenta a temperabilidade e a resist\u00eancia \u00e0 tra\u00e7\u00e3o; auxilia na desoxida\u00e7\u00e3o.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">F\u00f3sforo (P)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u2264 0,040<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Impureza. Mantida em n\u00edvel baixo para evitar fragilidade.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Enxofre (S)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u2264 0,050<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Impureza. Mantida baixa para preservar a soldabilidade (mas um pouco mais de enxofre auxilia na usinagem).<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Ferro (Fe)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Equil\u00edbrio<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Base met\u00e1lica.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Por que ter um baixo teor de carbono \u00e9 importante<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O teor de carbono de 0,18% \u00e9 a zona \u201cGoldilocks\u201d para a maioria dos tipos de fabrica\u00e7\u00e3o:<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00d3timo para soldagem:<\/span><\/strong><span class=\"ng-star-inserted\"> O baixo carbono reduz a chance de formar martensita fr\u00e1gil na Zona Afetada pelo Calor (ZAC), ent\u00e3o n\u00e3o h\u00e1 necessidade de pr\u00e9-aquecimento.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Ainda \u00e9 d\u00factil o suficiente para ser dobrado, laminado ou estampado sem quebrar.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Potencial de Cementa\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> N\u00e3o pode ser endurecido em toda a sua se\u00e7\u00e3o (t\u00eampera e revenimento), mas \u00e9 um \u00f3timo candidato para cementa\u00e7\u00e3o, que cria uma casca externa dura que resiste ao desgaste enquanto mant\u00e9m um n\u00facleo tenaz.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Que \u00c9 a Microestrutura Ferrita\u2013Perlita?<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A microestrutura do a\u00e7o 1018 \u00e9 a melhor maneira de entender como ele se comporta como engenheiro.<\/span><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">O 1018 \u00e9 composto pelo seguinte \u00e0 temperatura ambiente:<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Ferrita:<\/span><\/strong><span class=\"ng-star-inserted\"> (Os gr\u00e3os claros) Ferro puro. \u00c9 macio, flex\u00edvel e magn\u00e9tico. Esta \u00e9 a maior parte da matriz.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Perlita:<\/span><\/strong><span class=\"ng-star-inserted\"> (os gr\u00e3os escuros) Camadas de cementita (carboneto de ferro) e ferrita. Isso lhe confere resist\u00eancia.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">N\u00e3o h\u00e1 muita perlita porque o carbono \u00e9 baixo. Esta estrutura, que \u00e9 composta principalmente de ferrita, explica por que o 1018 \u00e9<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Corte f\u00e1cil:<\/span><\/strong><span class=\"ng-star-inserted\"> A ferrita mole facilita a forma\u00e7\u00e3o de cavacos.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">N\u00e3o fr\u00e1gil:<\/span><\/strong><span class=\"ng-star-inserted\"> Em vez de se propagarem, as trincas tendem a se atenuar na ferrita mole.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Trefila\u00e7\u00e3o a frio vs. lamina\u00e7\u00e3o a quente<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O m\u00e9todo de processamento afeta como a estrutura dos gr\u00e3os funciona:<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">1018 Laminado a Quente:<\/span><\/strong><span class=\"ng-star-inserted\"> Os gr\u00e3os s\u00e3o todos do mesmo tamanho (aleat\u00f3rios). Menos tens\u00e3o, mas mais margem para erro nas dimens\u00f5es.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">1018 Trefilado a Frio:<\/span><\/strong><span class=\"ng-star-inserted\"> Os gr\u00e3os se alongam na dire\u00e7\u00e3o da trefila\u00e7\u00e3o. Esse encruamento torna a tens\u00e3o de escoamento e a dureza superficial muito maiores e torna as dimens\u00f5es mais precisas (retid\u00e3o e di\u00e2metro). As barras trefiladas a frio s\u00e3o o que a maioria das pessoas usa para usinagem.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propriedades F\u00edsicas do A\u00e7o 1018<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Os engenheiros n\u00e3o costumam escolher o 1018 para trabalhos que exigem muita tens\u00e3o. Ele \u00e9 escolhido por ser confi\u00e1vel em trabalhos com tens\u00e3o de baixa a m\u00e9dia.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Valores Comuns para Propriedades Mec\u00e2nicas (Trefilado a Frio)<\/span><\/h3>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tabela 2: Propriedades Mec\u00e2nicas<\/span><\/strong><\/p>\n<div class=\"table-container ng-star-inserted\">\n<table>\n<tbody>\n<tr class=\"table-header ng-star-inserted\">\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propriedade<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Valor (t\u00edpico)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Interpreta\u00e7\u00e3o da engenharia<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">~440\u2013485 MPa (64\u201370 ksi)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Suficiente para uso estrutural geral.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Resist\u00eancia ao escoamento<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">~370 MPa (54 ksi)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O trabalho a frio o torna muito mais resistente que o Laminado a Quente (cerca de 30 ksi).<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Alongamento<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">15\u201320%<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Boa ductilidade; ele se dobra antes de quebrar.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Dureza<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">cerca de 126 HB (Brinell)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mole o suficiente para usinagem em velocidades muito altas.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Maquinabilidade<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">cerca de 70% (B1112 = 100%)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c9 isso que as pessoas consideram como o padr\u00e3o para \u201cboa\u201d usinabilidade em a\u00e7o.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Ponto de Projeto Importante:<\/span><\/strong><span class=\"ng-star-inserted\"> A trefila\u00e7\u00e3o a frio torna a tens\u00e3o de escoamento quase 50% maior que a lamina\u00e7\u00e3o a quente. Sempre especifique 1018 Acabado a Frio (CF) se voc\u00ea estiver fabricando um eixo que precisa ser resistente \u00e0 flex\u00e3o.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Caracter\u00edsticas F\u00edsicas<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Densidade:<\/span><\/strong><span class=\"ng-star-inserted\"> 7,87 g\/cm\u00b3<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">M\u00f3dulo de elasticidade:<\/span><\/strong><span class=\"ng-star-inserted\"> 200 GPa (29.000 ksi). Tenha em mente que o 1018 \u00e9 t\u00e3o r\u00edgido quanto os a\u00e7os liga de alta resist\u00eancia. Alterar a forma do a\u00e7o n\u00e3o reduzir\u00e1 a deflex\u00e3o; apenas usar um a\u00e7o mais resistente o far\u00e1.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Qu\u00e3o f\u00e1cil \u00e9 de usinar e como ele funciona com CNC<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Muitas pessoas acham que o 1018 \u00e9 um dos a\u00e7os mais f\u00e1ceis de trabalhar. \u00c9 o a\u00e7o que a maioria das pessoas usa para comparar com outros a\u00e7os.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Por que o 1018 \u00e9 Simples de Usinar<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Forma\u00e7\u00e3o Est\u00e1vel de Cavacos:<\/span><\/strong><span class=\"ng-star-inserted\"> A estrutura ferrita-perlita faz com que os cavacos se quebrem razoavelmente bem, mas eles podem ser \u201cpegajosos\u201d em compara\u00e7\u00e3o com a\u00e7os com chumbo como o 12L14.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">N\u00e3o abrasivo:<\/span><\/strong><span class=\"ng-star-inserted\"> portanto, n\u00e3o desgasta as ferramentas rapidamente. Ferramentas padr\u00e3o de a\u00e7o r\u00e1pido (HSS) ou metal duro sem revestimento duram muito tempo.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Consist\u00eancia:<\/span><\/strong><span class=\"ng-star-inserted\"> Diferente do A36, este grau \u00e9 quimicamente definido, ent\u00e3o os maquinistas n\u00e3o encontram \u201cpontos duros\u201d no material.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Diretrizes para Usinagem CNC<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Virar:<\/span><\/strong><span class=\"ng-star-inserted\"> Funciona bem em velocidades m\u00e9dias. Se o acabamento estiver rasgando porque est\u00e1 muito grudento, aumente a velocidade de superf\u00edcie (SFM) e certifique-se de que o raio da ponta da ferramenta seja afiado.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Perfura\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> Ele perfura com muita facilidade. Para furos profundos, \u00e9 melhor usar perfura\u00e7\u00e3o com pica-pica para eliminar os cavacos que continuam voltando.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">L\u00edquido de refrigera\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> Um fluido de corte sol\u00favel em \u00e1gua comum \u00e9 suficiente para manter o calor baixo e eliminar os cavacos.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Nota sobre Estabilidade Dimensional:<\/span><\/strong><span class=\"ng-star-inserted\"> O 1018 trefilado a frio tem tens\u00f5es residuais do processo de trefila\u00e7\u00e3o. Se voc\u00ea cortar um rasgo de chaveta em um eixo longo, o eixo pode empenar \u00e0 medida que as tens\u00f5es s\u00e3o liberadas. Considere material aliviado de tens\u00f5es ou torneamento entre pontas para eixos que precisam ser muito precisos.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Coisas a considerar ao soldar e fabricar<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 \u00e9 o \u201camigo do soldador.\u201d Algumas pessoas dizem que \u00e9 o a\u00e7o carbono mais sold\u00e1vel do mercado.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Por que Ele Se Une T\u00e3o Bem<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O baixo teor de carbono (&lt;0,20%) impede que a zona de solda forme martensita dura e fr\u00e1gil \u00e0 medida que o metal esfria.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pr\u00e9-aquecimento:<\/span><\/strong><span class=\"ng-star-inserted\"> Geralmente n\u00e3o \u00e9 necess\u00e1rio para pe\u00e7as com menos de 2 polegadas de espessura.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">N\u00e3o necess\u00e1rio:<\/span><\/strong><span class=\"ng-star-inserted\"> Tratamento T\u00e9rmico P\u00f3s-Soldagem (PWHT).<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Processos:<\/span><\/strong><span class=\"ng-star-inserted\"> Funciona muito bem para soldagem MIG (GMAW), TIG (GTAW), Eletrodo Revestido (SMAW) e oxiacetil\u00eanica.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Dicas para Fabrica\u00e7\u00e3o<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Dobramento:<\/span><\/strong><span class=\"ng-star-inserted\"> \u00c9 mais dif\u00edcil dobrar o 1018 trefilado a frio do que o laminado a quente. Use material laminado a quente ou recozido para evitar que o raio externo trinque quando voc\u00ea precisar de dobras de raio apertado.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A soldagem adiciona calor<\/span><\/strong><span class=\"ng-star-inserted\">, o que altera a forma. Soldagem pesada em um lado de uma chapa pode causar empenamento porque o 1018 \u00e9 frequentemente usado em formas que n\u00e3o aliviam tens\u00f5es.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Diferentes Formas de Tratar Termicamente o A\u00e7o 1018<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 n\u00e3o pode ser \u201cendurecido\u201d da maneira usual (por t\u00eampera e revenimento) para obter um n\u00facleo resistente, mas \u00e9 o melhor material para Endurecimento Superficial.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Cementa\u00e7\u00e3o (endurecimento da camada)<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 n\u00e3o tem carbono suficiente para endurecer por conta pr\u00f3pria, ent\u00e3o o carbono precisa ser adicionado \u00e0 superf\u00edcie.<\/span><\/p>\n<ol class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Processo:<\/span><\/strong><span class=\"ng-star-inserted\"> Aque\u00e7a a pe\u00e7a em uma atmosfera rica em carbono. O carbono se difunde para a camada externa da superf\u00edcie.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">T\u00eampera:<\/span><\/strong><span class=\"ng-star-inserted\"> Resfrie a pe\u00e7a rapidamente. A camada, que tem muito carbono, fica muito dura (Rc 55-60), mas o n\u00facleo, que tem menos carbono, permanece tenaz e flex\u00edvel.<\/span><\/p>\n<\/li>\n<\/ol>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Utilizar:<\/span><\/strong><span class=\"ng-star-inserted\"> Engrenagens, pinos e placas de desgaste onde uma superf\u00edcie dura resiste ao desgaste e um n\u00facleo tenaz impede que a pe\u00e7a quebre ao receber impacto.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Normaliza\u00e7\u00e3o vs. Recozimento<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Recozimento:<\/span><\/strong><span class=\"ng-star-inserted\"> Isso torna o a\u00e7o o mais macio poss\u00edvel para conforma\u00e7\u00e3o.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Normaliza\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> Torna a estrutura granular mais uniforme ao refin\u00e1-la. Isso \u00e9 frequentemente feito em forjados de 1018 para garantir que a usinagem seja sempre consistente.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Usos Comuns do A\u00e7o 1018 na Manufatura<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 \u00e9 o \u201ccoringa\u201d dos metais.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Eixos e pinos<\/span><\/strong><span class=\"ng-star-inserted\"> s\u00e3o os usos mais comuns para barra 1018 trefilada a frio. Eixos para bombas, motores e pinos de localiza\u00e7\u00e3o.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Dispositivos e gabaritos:<\/span><\/strong><span class=\"ng-star-inserted\"> Estes s\u00e3o muito usados em oficinas de usinagem para fazer placas de base, grampos e blocos de setup.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Parafusos de baixa resist\u00eancia<\/span><\/strong><span class=\"ng-star-inserted\">, prisioneiros e tirantes s\u00e3o exemplos de fixadores.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Suportes Estruturais:<\/span><\/strong><span class=\"ng-star-inserted\"> Suportes de montagem soldados entre si para m\u00e1quinas.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pe\u00e7as Cementadas:<\/span><\/strong><span class=\"ng-star-inserted\"> Catracas, engrenagens e coroas dentadas de baixo custo.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Qual voc\u00ea deve escolher, a\u00e7o 1018 ou A36?<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Este \u00e9 o erro mais comum. O A36 \u00e9 o padr\u00e3o para formas estruturais como vigas I e cantoneiras, enquanto o 1018 \u00e9 o padr\u00e3o para barras.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tabela 3: Compara\u00e7\u00e3o A36 vs. 1018<\/span><\/strong><\/p>\n<div class=\"table-container ng-star-inserted\">\n<table>\n<tbody>\n<tr class=\"table-header ng-star-inserted\">\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Recurso<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A\u00e7o 1018<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A\u00e7o A36<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Defini\u00e7\u00e3o de L\u00f3gica da Escolha<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Defini\u00e7\u00e3o<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Composi\u00e7\u00e3o Qu\u00edmica<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O limite de escoamento \u00e9 uma propriedade mec\u00e2nica.<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 garante a composi\u00e7\u00e3o qu\u00edmica, e o A36 garante a resist\u00eancia.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Acabamento Superficial<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Trefilado a Frio: Liso e Brilhante<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Rugoso e com carepa (laminado a quente)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Use 1018 para pe\u00e7as que precisam ser precisas ou vis\u00edveis.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Maquinabilidade<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Consistente, bom<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">inconsistente (\u201cpontos duros\u201d)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Use 1018 para pe\u00e7as CNC.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Disponibilidade de Formas<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Barra, vergalh\u00e3o, fio<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">chapa, viga e cantoneira<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O A36 \u00e9 o tipo mais comum de forma estrutural.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pre\u00e7o<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Um Pouco Mais Alto<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mais baixo<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O A36 \u00e9 a\u00e7o para constru\u00e7\u00e3o em geral.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A Regra para Tomar Decis\u00f5es:<\/span><\/strong><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Voc\u00ea est\u00e1 usinando uma pe\u00e7a que precisa ser muito precisa, como um eixo ou parafuso? -&gt; <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Escolha o 1018.<\/span><\/strong><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Voc\u00ea est\u00e1 soldando uma mesa ou estrutura? -&gt; <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Escolha o A36.<\/span><\/strong><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Quando N\u00c3O Usar o A\u00e7o 1018: Limita\u00e7\u00f5es de Projeto<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O 1018 \u00e9 flex\u00edvel, mas tem seus limites.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Alta Resist\u00eancia Necess\u00e1ria:<\/span><\/strong><span class=\"ng-star-inserted\"> Se voc\u00ea precisa de alta resist\u00eancia ao escoamento mas n\u00e3o quer muito volume, mude para o 1045 (a\u00e7o m\u00e9dio carbono) ou 4140 (a\u00e7o liga). O 1018 simplesmente entortar\u00e1.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">T\u00eampera Total:<\/span><\/strong><span class=\"ng-star-inserted\"> O 1018 n\u00e3o consegue endurecer a pe\u00e7a inteira, apenas a superf\u00edcie. Use a\u00e7o ferramenta ou 4140.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Resist\u00eancia \u00e0 Corros\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> O 1018 enferruja imediatamente em condi\u00e7\u00f5es \u00famidas. Se voc\u00ea n\u00e3o pode pint\u00e1-lo ou revesti-lo, use a\u00e7o inoxid\u00e1vel 304 ou alum\u00ednio.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Cargas de Fadiga Elevadas:<\/span><\/strong><span class=\"ng-star-inserted\"> O 1018 n\u00e3o \u00e9 uma boa escolha para pe\u00e7as c\u00edclicas que est\u00e3o sob muita tens\u00e3o (como virabrequins) porque tem menos resist\u00eancia e mais impurezas.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Resumo: O que os engenheiros devem saber sobre o a\u00e7o 1018<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O a\u00e7o 1018 \u00e9 o padr\u00e3o seguro e barato para o projeto de engenharia.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Usinabilidade:<\/span><\/strong><span class=\"ng-star-inserted\"> \u00c9 o padr\u00e3o para torneamento e fresamento CNC com o qual se pode contar.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Fabrica\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> \u00c9 f\u00e1cil de soldar sem quaisquer etapas complicadas.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Endurecimento da superf\u00edcie:<\/span><\/strong><span class=\"ng-star-inserted\"> A cementa\u00e7\u00e3o produz pe\u00e7as muito resistentes ao desgaste.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pre\u00e7o:<\/span><\/strong><span class=\"ng-star-inserted\"> \u00c9 um dos metais mais baratos que voc\u00ea pode comprar.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Melhores pr\u00e1ticas:<\/span><\/strong><span class=\"ng-star-inserted\"> Para eixos, pinos e outras pe\u00e7as usinadas, use barra 1018 Trefilada a Frio. Use 1018 Laminado a Quente apenas se o acabamento superficial n\u00e3o importar ou se voc\u00ea planeja fazer muita soldagem. Se precisar de mais resist\u00eancia, use 1045 ou 4140.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Perguntas frequentes<\/span><\/h2>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P: Voc\u00ea pode soldar o a\u00e7o 1018?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">R: Sim, muito bem. Porque tem baixo teor de carbono, \u00e9 um dos a\u00e7os mais f\u00e1ceis de soldar. Para a maioria dos usos, n\u00e3o precisa ser aquecido antes ou depois da soldagem.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P: O a\u00e7o 1018 enferruja?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">R: Sim, muito rapidamente. Ele n\u00e3o resiste \u00e0 ferrugem. Para evitar que enferruje, precisa ser pintado, revestido a p\u00f3, zincado ou oleado.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P: Qual \u00e9 a diferen\u00e7a entre o 1018 e o 1045?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">R: A quantidade de carbono. H\u00e1 cerca de 0,18% de carbono no 1018 e cerca de 0,45% de carbono no 1045. O 1045 \u00e9 mais resistente e pode ser endurecido por completo, mas \u00e9 mais dif\u00edcil de soldar e trabalhar.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P: \u00c9 poss\u00edvel endurecer o a\u00e7o 1018?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">R: Voc\u00ea n\u00e3o pode endurec\u00ea-lo por completo (t\u00eampera e revenimento) porque ele n\u00e3o tem carbono suficiente. Voc\u00ea s\u00f3 pode cement\u00e1-lo (carbonetar) para tornar o exterior duro enquanto mant\u00e9m o interior macio.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P: O 1018 \u00e9 melhor que o A36?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">R: Sim, o 1018 \u00e9 mais limpo e mais consistente para usinagem. O A36 \u00e9 geralmente mais barato e bom o suficiente para soldagem estrutural, como fazer um rack.<\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Quando engenheiros e fabricantes precisam de um material previs\u00edvel, barato e compat\u00edvel com tudo, eles geralmente escolhem o a\u00e7o 1018.<\/p>","protected":false},"author":1,"featured_media":9621,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-9450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-guide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>1018 Steel Explained: Composition, Properties &amp; Selection Guide<\/title>\n<meta name=\"description\" content=\"Learn 1018 steel composition, mechanical properties, weldability, and common engineering applications, with guidance on when to choose it over other carbon steels.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cncmachiningshops.com\/pt\/1018-steel\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is 1018 Steel? 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