{"id":9740,"date":"2026-01-10T17:28:29","date_gmt":"2026-01-10T09:28:29","guid":{"rendered":"https:\/\/www.cncmachiningshops.com\/?p=9740"},"modified":"2026-01-05T13:03:08","modified_gmt":"2026-01-05T05:03:08","slug":"grade-2-titanium","status":"publish","type":"post","link":"https:\/\/www.cncmachiningshops.com\/pt\/grade-2-titanium\/","title":{"rendered":"Tit\u00e2nio Grau 2 Explicado: Propriedades, Aplica\u00e7\u00f5es, Usinagem e Diretrizes de Projeto"},"content":{"rendered":"<div data-page-id=\"SLAQdLOx4oxYa6xfGYdcJBbqnUe\" data-lark-html-role=\"root\" data-docx-has-block-data=\"true\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O grau mais comum de tit\u00e2nio comercialmente puro (CP) \u00e9 o tit\u00e2nio grau 2, frequentemente chamado de \u201ccavalo de batalha\u201d da ind\u00fastria de tit\u00e2nio. Ele recebe esse t\u00edtulo n\u00e3o porque se destaca em uma m\u00e9trica extrema, mas porque possui o melhor equil\u00edbrio de engenharia entre resist\u00eancia, resist\u00eancia \u00e0 corros\u00e3o, conformabilidade e manufaturabilidade. No projeto real de pe\u00e7as, esse equil\u00edbrio frequentemente \u00e9 mais importante do que o melhor desempenho mec\u00e2nico de ligas mais ex\u00f3ticas.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Do ponto de vista de engenharia, o Grau 2 \u00e9 a melhor escolha quando voc\u00ea precisa de resist\u00eancia \u00e0 corros\u00e3o confi\u00e1vel, mas n\u00e3o quer pagar caro por isso, ter dificuldades para usin\u00e1-lo ou abrir m\u00e3o da tenacidade. O Grau 2 \u00e9 o melhor meio-termo funcional entre a conformabilidade macia do Grau 1 e a maior resist\u00eancia dos Graus 3 e 4. Ele possui resist\u00eancia \u00e0 tra\u00e7\u00e3o m\u00ednima de 345 MPa e \u00e9 muito d\u00factil. Este artigo oferece uma an\u00e1lise t\u00e9cnica completa do tit\u00e2nio Grau 2, mostrando a engenheiros e gerentes de compras quando escolher este material vers\u00e1til e como aproveitar ao m\u00e1ximo seu processamento para uso industrial.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O que \u00e9 Tit\u00e2nio Grau 2? Normas e Classifica\u00e7\u00e3o<\/span><\/h2>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O \u201cCavalo de Batalha\u201d do Tit\u00e2nio Comercialmente Puro<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Tit\u00e2nio Comercialmente Puro (CP) \u00e9 o mesmo que o tit\u00e2nio Grau 2. Suas propriedades s\u00e3o determinadas por n\u00edveis controlados de impurezas, e n\u00e3o pela adi\u00e7\u00e3o de elementos como alum\u00ednio ou van\u00e1dio \u00e0 liga. \u00c9 o padr\u00e3o industrial para aplica\u00e7\u00f5es em que a corros\u00e3o \u00e9 um fator cr\u00edtico, pois possui resist\u00eancia moderada e \u00e9 f\u00e1cil de conformar.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Para compreender o Grau 2, \u00e9 essencial consider\u00e1-lo dentro do espectro do Tit\u00e2nio CP, onde os principais fatores distintivos s\u00e3o o teor de Oxig\u00eanio (O) e Ferro (Fe):<\/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\">Grau 1 (Baixo Oxig\u00eanio):<\/span><\/strong><span class=\"ng-star-inserted\"> Maior ductilidade e menor resist\u00eancia. Utilizado para estampagem profunda.<\/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\">Grau 2 (Oxig\u00eanio M\u00e9dio):<\/span><\/strong><span class=\"ng-star-inserted\"> O Padr\u00e3o Equilibrado. Resistente o suficiente para vasos de press\u00e3o e flex\u00edvel o suficiente para conforma\u00e7\u00e3o a frio.<\/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\">Graus 3 e 4 (Alto Oxig\u00eanio):<\/span><\/strong><span class=\"ng-star-inserted\"> Mais resistentes, por\u00e9m menos conform\u00e1veis. Utilizados para conex\u00f5es e ferragens que precisam ser muito resistentes.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Designa\u00e7\u00f5es e normas em todo o mundo<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Para garantir que os materiais funcionem bem, \u00e9 muito importante ser preciso na compra. Existem certas designa\u00e7\u00f5es usadas em todo o mundo para se referir ao tit\u00e2nio grau 2:<\/span><\/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\">Sistema padr\u00e3o<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Escopo do Produto<\/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\">UNS<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R50400 \u00e9 o principal identificador para bancos de dados na Am\u00e9rica do Norte.<\/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\">ASTM<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">B265, B348 e B338 s\u00e3o as normas para chapas\/placas, barras\/blocos e tubos\/tubula\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\">ASME<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Material que atende ao C\u00f3digo ASME SB-265 para Caldeiras e Vasos de Press\u00e3o (BPVC).<\/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\">ISO<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">5832-2: Norma para implantes m\u00e9dicos quanto \u00e0 equival\u00eancia qu\u00edmica.<\/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\">DIN<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">7035 \u00e9 uma norma industrial alem\u00e3.<\/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\">Sugest\u00e3o de engenharia:<\/span><\/strong><span class=\"ng-star-inserted\"> Sempre inclua tanto o grau quanto a norma nos desenhos de engenharia. Por exemplo, \u201cTit\u00e2nio Grau 2 conforme ASTM B265\u201d. Isso deixa claro quais s\u00e3o os limites de impurezas e os requisitos para ensaios mec\u00e2nicos.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Como a Composi\u00e7\u00e3o Qu\u00edmica Afeta o Desempenho?<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O que \u00e9 adicionado ao tit\u00e2nio Grau 2 tem menos efeito sobre seu comportamento para um engenheiro do que o que \u00e9 controlado. O gerenciamento rigoroso dos elementos intersticiais determina suas propriedades mec\u00e2nicas.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Limites da composi\u00e7\u00e3o qu\u00edmica (wt.%)<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">No Grau 2, existem limites m\u00e1ximos em vez de faixas-alvo. As partes mais importantes s\u00e3o:<\/span><\/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\">Limite (M\u00e1x. % em peso%)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Efeitos na 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\">Tit\u00e2nio (Ti)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Equil\u00edbrio (\u2265 99,21%)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A matriz. Tem baixa densidade e \u00e9 resistente \u00e0 corros\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\">Oxig\u00e9nio (O)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\">\n<pre><span style=\"font-family: inherit; font-size: inherit;\">\u22640,25%<\/span><\/pre>\n<\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O principal elemento que o torna mais resistente. Confere resist\u00eancia ao escoamento sem torn\u00e1-lo fr\u00e1gil.<\/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\">\n<pre><span style=\"font-family: inherit; font-size: inherit;\">\u22640,30%<\/span><\/pre>\n<\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Um estabilizador Beta. Teores de ferro muito altos reduzem a resist\u00eancia \u00e0 corros\u00e3o, enquanto teores adequados aumentam 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\">Nitrog\u00eanio (N)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\">\n<pre><span style=\"font-family: inherit; font-size: inherit;\">\u22640,03%<\/span><\/pre>\n<\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Se n\u00e3o controlado, torna o material mais duro, mas muito menos d\u00factil.<\/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\">\n<pre><span style=\"font-family: inherit; font-size: inherit;\">\u22640,08%<\/span><\/pre>\n<\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mantido baixo para aumentar a tenacidade.<\/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\">Hidrog\u00e9nio (H)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\">\n<pre><span style=\"font-family: inherit; font-size: inherit;\">\u22640,015%<\/span><\/pre>\n<\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Limites muito rigorosos para impedir a fragiliza\u00e7\u00e3o por hidrog\u00eanio.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O que o Ferro e o Oxig\u00eanio Fazem<\/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\">Oxig\u00eanio como Endurecedor:<\/span><\/strong><span class=\"ng-star-inserted\"> Os \u00e1tomos de oxig\u00eanio se encaixam nos espa\u00e7os entre os \u00e1tomos na rede de tit\u00e2nio Alfa, o que a deforma levemente e impede o movimento das discord\u00e2ncias. Esse endurecimento por solu\u00e7\u00e3o s\u00f3lida confere ao Grau 2 uma resist\u00eancia \u00e0 tra\u00e7\u00e3o de 345 MPa (em compara\u00e7\u00e3o com 240 MPa para o Grau 1).<\/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\">Microestrutura:<\/span><\/strong><span class=\"ng-star-inserted\"> O Grau 2 possui uma microestrutura monof\u00e1sica Alfa (\u03b1<\/span>) e uma estrutura cristalina Hexagonal Compacta (HCP). Essa estrutura permanece est\u00e1vel em todas as temperaturas de opera\u00e7\u00e3o, o que significa que n\u00e3o h\u00e1 mudan\u00e7as de fase durante a soldagem. Esta \u00e9 uma grande raz\u00e3o pela qual \u00e9 t\u00e3o f\u00e1cil de soldar.<\/p>\n<p>&nbsp;<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Quais s\u00e3o as propriedades mec\u00e2nicas mais importantes?<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O tit\u00e2nio Grau 2 \u00e9 escolhido por ser confi\u00e1vel, n\u00e3o por ser muito resistente. Seu perfil mec\u00e2nico ajuda a manter pe\u00e7as que suportam press\u00e3o \u00edntegras, permitindo ainda a fabrica\u00e7\u00e3o.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propriedades mec\u00e2nicas comuns \u00e0 temperatura ambiente<\/span><\/h3>\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\">Metric Value<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Imperial Value<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Import\u00e2ncia para a 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\">345 MPa (m\u00ednimo)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">50 ksi<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Isso \u00e9 suficiente para tubos e vasos normais.<\/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 (0.2%)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">275\u2013450 MPa<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">40\u201365 ksi<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Definir limite el\u00e1stico para o dimensionamento 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\">Alongamento<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\">\n<pre><span style=\"font-family: inherit; font-size: inherit;\">\u226520%<\/span><\/pre>\n<\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">-<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Boa conformabilidade a frio; resiste \u00e0 fissura\u00e7\u00e3o durante a dobragem.<\/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\">160 a 200 HV<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">~80 a 90 HRB<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A superf\u00edcie \u00e9 moderadamente dura, pelo que \u00e9 necess\u00e1rio ter cuidado para n\u00e3o a gripagem.<\/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\">M\u00f3dulo de elasticidade<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">105 GPa<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">15,2 Msi<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c9 flex\u00edvel. Metade da rigidez do a\u00e7o; \u00e9 muito importante planear a deflex\u00e3o.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Vantagem da Rela\u00e7\u00e3o Resist\u00eancia-Peso<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Grau 2 n\u00e3o \u00e9 t\u00e3o resistente como o Grau 5, mas \u00e9 cerca de 45% menos denso que o a\u00e7o inoxid\u00e1vel (4,51 g\/cm\u00b3).<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Uma pe\u00e7a em Grau 2 pode ser t\u00e3o resistente como uma pe\u00e7a em a\u00e7o inoxid\u00e1vel 316L, mas pesar quase metade. Isto torna-a perfeita para estruturas que precisam de ser leves e resistentes, como as que est\u00e3o na \u00e1gua ou ao largo da costa.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Como Lidar com a Fadiga<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Grau 2 tem um limite claro de quanto tempo pode durar, o que \u00e9 diferente do alum\u00ednio. A resist\u00eancia \u00e0 fadiga \u00e9 geralmente cerca de metade da resist\u00eancia \u00e0 tra\u00e7\u00e3o.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Nota de Projeto:<\/span><\/strong><span class=\"ng-star-inserted\"> O acabamento superficial tem um grande efeito na forma como o tit\u00e2nio CP resiste sob tens\u00e3o, porque \u00e9 sens\u00edvel ao entalhe. As superf\u00edcies polidas comportam-se muito melhor do que as superf\u00edcies maquinadas grosseiramente quando s\u00e3o submetidas a carregamento c\u00edclico.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Resist\u00eancia \u00e0 Corros\u00e3o: A Principal Raz\u00e3o para a Escolha<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">A raz\u00e3o mais convincente para escolher o tit\u00e2nio Grau 2 \u00e9 que este n\u00e3o corr\u00f3i em condi\u00e7\u00f5es adversas. N\u00e3o depende de galvanoplastia ou revestimentos que se desgastam.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Mecanismo do Filme de \u00d3xido Passivo<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Quando entra em contacto com o oxig\u00e9nio, o Grau 2 transforma-se instantaneamente numa forma est\u00e1vel e resistente de Di\u00f3xido de Tit\u00e2nio (<span class=\"mord mathnormal\">T<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mord\"><span class=\"mord mathnormal\">O<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"ng-star-inserted\">) filme.<\/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\">Autorregenera\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> O filme volta a formar-se rapidamente quando h\u00e1 um pouco de humidade ou oxig\u00e9nio na 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\">Estabilidade:<\/span><\/strong><span class=\"ng-star-inserted\"> Esta camada de \u00f3xido \u00e9 quimicamente est\u00e1vel numa ampla gama de n\u00edveis de pH, o que significa que n\u00e3o se degradar\u00e1 e causar\u00e1 picadas nos a\u00e7os inoxid\u00e1veis.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Desempenho no Ambiente<\/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\">\u00c1gua do Mar e Atmosferas Marinhas:<\/span><\/strong><span class=\"ng-star-inserted\"> O Grau 2 \u00e9 quase completamente resistente \u00e0 corros\u00e3o geral e \u00e0 picagem em \u00e1gua do mar a temperaturas at\u00e9 260\u00b0C (500\u00b0F). Este \u00e9 o material mais comum utilizado em permutadores de calor para dessaliniza\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\">Cloretos e lix\u00edvia:<\/span><\/strong><span class=\"ng-star-inserted\"> Muito resistente ao g\u00e1s cloro h\u00famido, hipocloritos e solu\u00e7\u00f5es de salmoura.<\/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\">\u00c1cidos:<\/span><\/strong><span class=\"ng-star-inserted\"> Excelente na decomposi\u00e7\u00e3o de \u00e1cidos como n\u00edtrico e cr\u00f3mico.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Aten\u00e7\u00e3o:<\/span><span class=\"ng-star-inserted\"> A corros\u00e3o pode ocorrer rapidamente quando os \u00e1cidos s\u00e3o reduzidos (como o clor\u00eddrico e o sulf\u00farico). Estes meios necessitam de inibidores ou de liga (Grau 7).<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Fabrico: Maquinagem, Conforma\u00e7\u00e3o e Soldadura<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Comparado com as ligas de tit\u00e2nio, o tit\u00e2nio grau 2 \u00e9 \u201camigo do fabrico\u201d, mas necessita de controlos de processo diferentes do a\u00e7o ou do alum\u00ednio.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Regras para a maquinagem CNC<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Grau 2 \u00e9 mais f\u00e1cil de maquinar do que o Grau 5, mas \u00e9 mais dif\u00edcil de trabalhar porque n\u00e3o conduz bem o calor e tende a gripagem.<\/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\">Gerir o calor:<\/span><\/strong><span class=\"ng-star-inserted\"> O tit\u00e2nio n\u00e3o afasta o calor da zona de corte. \u00c9 no gume da ferramenta que o calor se acumula. Utilize refrigerante de inunda\u00e7\u00e3o de alta press\u00e3o para resolver o problema. \u00c2ngulos de ataque positivos em ferramentas de metal duro tornam as for\u00e7as de corte mais baixas.<\/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\">Velocidade e alimenta\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> Para evitar o endurecimento da pe\u00e7a, trabalhe a velocidades de superf\u00edcie mais baixas (cerca de 45\u201360 m\/min) com avan\u00e7os relativamente elevados. N\u00e3o fa\u00e7a pausas; a ferramenta tem de estar sempre a cortar.<\/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\">Ferramentas:<\/span><\/strong><span class=\"ng-star-inserted\"> Utilize ferramentas afiadas e concebidas para o trabalho. As ferramentas rombas endurecem o trabalho imediatamente e causam falhas catastr\u00f3ficas.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Fabrico e dobragem<\/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\">Conforma\u00e7\u00e3o a frio:<\/span><\/strong><span class=\"ng-star-inserted\"> O Grau 2 \u00e9 muito flex\u00edvel e pode esticar at\u00e9 20%. A dobragem a frio e a estampagem superficial s\u00e3o ambas poss\u00edveis.<\/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\">Retorno el\u00e1stico:<\/span><\/strong><span class=\"ng-star-inserted\"> O Grau 2 tem muito retorno el\u00e1stico porque tem um m\u00f3dulo baixo (105 GPa). Para compensar isto, os moldes precisam de ser dobrados mais do que o a\u00e7o, geralmente em 15\u00b0 a 25\u00b0.<\/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\">Lubrifica\u00e7\u00e3o:<\/span><\/strong><span class=\"ng-star-inserted\"> Para evitar a gripagem dos moldes, deve utilizar lubrificantes de alta resist\u00eancia como o dissulfureto de molibd\u00e9nio ou algo semelhante.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Caracter\u00edsticas de Soldagem<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Grau 2 obt\u00e9m uma classifica\u00e7\u00e3o Excelente para soldadura (TIG\/GTAW, Laser, Plasma).<\/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\">A Regra de Ouro:<\/span><\/strong><span class=\"ng-star-inserted\"> A prote\u00e7\u00e3o \u00e9 fundamental. Quando o tit\u00e2nio \u00e9 fundido, absorve rapidamente oxig\u00e9nio e azoto, tornando-se quebradi\u00e7o. Para proteger a po\u00e7a de fus\u00e3o, a Zona Afetada pelo Calor (ZAC) e o lado da raiz (purga traseira) at\u00e9 o metal arrefecer abaixo de 427\u00b0C (800\u00b0F), necessita de \u00e1rgon puro (99,999%).<\/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\">Resultado:<\/span><\/strong><span class=\"ng-star-inserted\"> Uma soldadura devidamente protegida mant\u00e9m a ductilidade e a resist\u00eancia \u00e0 corros\u00e3o do metal base. Se a cor mudar para palha, azul ou p\u00farpura, significa que o material est\u00e1 contaminado.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Uma Compara\u00e7\u00e3o de Engenharia entre Tit\u00e2nio Grau 2 e Grau 5<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Os engenheiros t\u00eam frequentemente dificuldade em decidir entre o \u201cCavalo de Batalha\u201d (Grau 2) e o \u201c\u00c1s\u201d (Grau 5 \/ Ti-6Al-4V). A principal restri\u00e7\u00e3o de projeto \u00e9 o que determina a escolha.<\/span><\/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\">Grau 2 (CP Ti)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Grau 5 (Ti-6Al-4V)<\/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\">Tipo<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Comercialmente Puro (Alfa)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Liga Alfa-Beta<\/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\">~275 a 450 MPa<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">~880 MPa<\/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\">Ductilidade<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Elevado (&gt;20%)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">N\u00e3o muito (&lt;14%)<\/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\">Corros\u00e3o<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Melhor (especialmente em \u00e1cidos)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Bom (para uso 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\">Maquinabilidade<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pegajoso, necessita controle de cavaco<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Duro, com mais desgaste nas ferramentas<\/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\">Custo<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">M\u00e9dio<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Alto<\/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\">Principais utiliza\u00e7\u00f5es<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tubula\u00e7\u00f5es, vasos, trocadores de calor<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Estruturas aeroespaciais, fixadores<\/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\">L\u00f3gica de escolha:<\/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\">Escolher <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Grau 2<\/span><\/strong><span class=\"ng-star-inserted\"> se a pe\u00e7a precisar de soldagem, muita conforma\u00e7\u00e3o a frio, ou a melhor resist\u00eancia \u00e0 corros\u00e3o em ambientes qu\u00edmicos ou marinhos.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Se o objetivo principal for uma alta rela\u00e7\u00e3o resist\u00eancia-peso ou alta resist\u00eancia \u00e0 fadiga de alto ciclo e a conforma\u00e7\u00e3o ou soldagem n\u00e3o forem muito importantes, escolha <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Grau 5<\/span><\/strong><span class=\"ng-star-inserted\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Usos Comuns do Tit\u00e2nio Grau 2 na Ind\u00fastria<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O tit\u00e2nio Grau 2 \u00e9 usado em muitas ind\u00fastrias onde a manuten\u00e7\u00e3o \u00e9 dif\u00edcil e a falha \u00e9 cara.<\/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\">Processamento Qu\u00edmico e Petroqu\u00edmico<\/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\">Vasos de rea\u00e7\u00e3o, colunas de destila\u00e7\u00e3o e tubula\u00e7\u00f5es de transfer\u00eancia fazem parte disso.<\/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\">Por que Grau 2?<\/span><\/strong><span class=\"ng-star-inserted\"> Ele suporta subst\u00e2ncias oxidantes agressivas (como cloro \u00famido) que rapidamente degradam o a\u00e7o inoxid\u00e1vel, garantindo que fluidos perigosos sejam contidos com seguran\u00e7a.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Gera\u00e7\u00e3o de eletricidade e dessaliniza\u00e7\u00e3o<\/span><\/strong><\/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\">Pe\u00e7as:<\/span><\/strong><span class=\"ng-star-inserted\"> Trocadores de calor com tubos de placas e condensadores.<\/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\">Por que Grau 2?<\/span><\/strong><span class=\"ng-star-inserted\"> Seu design de parede fina (que n\u00e3o permite qualquer corros\u00e3o) o torna o melhor na transfer\u00eancia de calor, e durar\u00e1 d\u00e9cadas porque n\u00e3o \u00e9 afetado pela \u00e1gua do mar.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Ferragens para embarca\u00e7\u00f5es<\/span><\/strong><\/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\">As pe\u00e7as incluem:<\/span><\/strong><span class=\"ng-star-inserted\"> V\u00e1lvulas de esfera, bombas de inc\u00eandio, conex\u00f5es de casco e eixos de h\u00e9lice.<\/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\">Por que Grau 2?<\/span><\/strong><span class=\"ng-star-inserted\"> Elimina a necessidade de \u00e2nodos de sacrif\u00edcio ou revestimentos protetores, o que reduz o custo de manuten\u00e7\u00e3o de plataformas offshore e embarca\u00e7\u00f5es navais ao longo de suas vidas \u00fateis.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c2nodos Dimensionalmente Est\u00e1veis (DSA)<\/span><\/strong><\/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\">Utilizar:<\/span><\/strong><span class=\"ng-star-inserted\"> Eletr\u00f3lise e galvanoplastia.<\/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\">Por que um grau 2?<\/span><\/strong><span class=\"ng-star-inserted\"> \u00c9 o substrato para revestimentos de platina ou \u00f3xido met\u00e1lico misto, que tornam as c\u00e9lulas eletrol\u00edticas muito condutivas e quimicamente est\u00e1veis.<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Resumo\u2014O que os Engenheiros Aprenderam<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">O Tit\u00e2nio Grau 2 \u00e9 a melhor escolha para engenharia quando voc\u00ea precisa de algo que seja forte o suficiente para durar no ambiente e f\u00e1cil de trabalhar. N\u00e3o tem a mesma resist\u00eancia das ligas aeroespaciais, mas sua capacidade de resistir \u00e0 corros\u00e3o, ser soldado e ser conformado a frio o torna o melhor material para equipamentos de processamento qu\u00edmico, marinho e industrial.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Para o engenheiro de projeto, o Grau 2 \u00e9 uma op\u00e7\u00e3o forte e leve em rela\u00e7\u00e3o ao a\u00e7o inoxid\u00e1vel que impede a corros\u00e3o antes que ela comece. Para o ch\u00e3o de f\u00e1brica, a prote\u00e7\u00e3o rigorosa durante a soldagem e o controle rigoroso de velocidade\/avan\u00e7o durante a usinagem s\u00e3o as \u00fanicas maneiras de aproveitar ao m\u00e1ximo este metal de alto desempenho.<\/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\">P1: O tit\u00e2nio grau 2 \u00e9 mais resistente que o a\u00e7o?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">O tit\u00e2nio Grau 2 (~345 MPa) n\u00e3o \u00e9 t\u00e3o resistente quanto a maioria dos a\u00e7os estruturais em termos de resist\u00eancia \u00e0 tra\u00e7\u00e3o. Mas sua rela\u00e7\u00e3o resist\u00eancia-peso \u00e9 melhor. Ele pesa cerca de 45% menos que o a\u00e7o, ent\u00e3o uma pe\u00e7a de tit\u00e2nio pode ser mais leve que uma pe\u00e7a de a\u00e7o de mesma resist\u00eancia, mas provavelmente ser\u00e1 maior.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P2: \u00c9 poss\u00edvel endurecer o tit\u00e2nio grau 2?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">N\u00e3o. Voc\u00ea n\u00e3o pode endurecer a liga Alfa Grau 2 aquecendo-a (t\u00eampera\/envelhecimento). O trabalho a frio (encruamento) \u00e9 a \u00fanica maneira de tornar algo mais resistente, mas tamb\u00e9m o torna menos d\u00factil. O \u00fanico tratamento t\u00e9rmico comum \u00e9 o recozimento para al\u00edvio de tens\u00f5es.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P3: O tit\u00e2nio Grau 2 possui campo magn\u00e9tico?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">N\u00e3o. O tit\u00e2nio grau 2 n\u00e3o atrai \u00edm\u00e3s. Esta propriedade \u00e9 muito importante para usos m\u00e9dicos (compatibilidade com MRI), navios de guerra de varredura de minas e inv\u00f3lucros eletr\u00f4nicos sens\u00edveis onde a interfer\u00eancia magn\u00e9tica deve ser zero.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P4: O que acontece se eu soldar tit\u00e2nio Grau 2 sem usar prote\u00e7\u00e3o gasosa?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">Ruptura imediata. O metal de solda absorve nitrog\u00eanio e oxig\u00eanio do ar, o que o torna fr\u00e1gil. Quando a solda esfria, provavelmente rachar\u00e1 ou quebrar\u00e1 com pouco peso. A descolora\u00e7\u00e3o (azul, roxo ou p\u00f3 branco) \u00e9 um sinal claro de que a prote\u00e7\u00e3o falhou.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P5: Por que usamos Grau 2 para trocadores de calor em vez de Grau 5?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">O Grau 2 \u00e9 mais f\u00e1cil de conformar, ent\u00e3o pode ser laminado em tubos de parede fina ou estampado em padr\u00f5es de placas complicados sem quebrar. Al\u00e9m disso, o Grau 2 geralmente tem uma resist\u00eancia ligeiramente melhor \u00e0 corros\u00e3o nos ambientes qu\u00edmicos comuns no resfriamento de processo (como \u00e1gua do mar e salmoura). Para esses usos, o Grau 5 \u00e9 muito resistente e dif\u00edcil de conformar.<\/span><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The most common grade of commercially pure (CP) titanium is grade 2 titanium, which is often called the &#8220;workhorse&#8221; of the titanium industry.<\/p>","protected":false},"author":1,"featured_media":9825,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-9740","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>Grade 2 Titanium: Properties, Machining &amp; Uses<\/title>\n<meta name=\"description\" content=\"Engineering guide to Grade 2 titanium, covering mechanical properties, corrosion resistance, machinability, design considerations, and common industrial applications.\" \/>\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\/grade-2-titanium\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Grade 2 Titanium Explained: Properties, Applications, Machining &amp; 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