{"id":11721,"date":"2026-06-06T10:46:21","date_gmt":"2026-06-06T02:46:21","guid":{"rendered":"https:\/\/www.cncmachiningshops.com\/?p=11721"},"modified":"2026-07-15T22:18:04","modified_gmt":"2026-07-15T14:18:04","slug":"delrin-vs-uhmw","status":"publish","type":"post","link":"https:\/\/www.cncmachiningshops.com\/it\/delrin-vs-uhmw\/","title":{"rendered":"Delrin o UHMW: quale materiale scegliere per il proprio componente?"},"content":{"rendered":"
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Quick Answer:<\/strong> Delrin (POM, polyoxymethylene) and UHMW (ultra-high molecular weight polyethylene) are both engineering plastics, but they solve different problems. Delrin has tensile strength of 60\u201370 MPa, flexural modulus of approximately 3.0 GPa, and very low creep \u2014 making it the correct choice for precision machined components (gears, bushings, housings) where dimensional stability to \u00b10.02\u20130.05 mm must be maintained under sustained load. UHMW has tensile strength of 20\u201340 MPa and modulus of 0.6\u20131.0 GPa, but offers a dry friction coefficient of approximately 0.10\u20130.22 (versus 0.20\u20130.35 for Delrin) and exceptional impact and abrasion resistance \u2014 making it the correct choice for wear strips, liners, chain guides, and impact pads where long service life under sliding contact or shock loading is the priority. The most common selection error is using UHMW for precision components: UHMW creep under sustained load produces dimensional drift of 0.1 mm or more in precision fits, causing misalignment and assembly failures.<\/p><\/blockquote>\n

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What Makes Delrin and UHMW Different<\/h2>\n

The performance difference between Delrin and UHMW originates in their polymer structure, and that structure directly determines every property that matters for engineering applications.<\/p>\n

Delrin (POM \u2014 polyoxymethylene):<\/strong> Delrin is a semi-crystalline acetal polymer with a highly regular, compact molecular chain. The oxymethylene repeat unit (-CH\u2082-O-) produces a polymer with high crystallinity (approximately 70\u201380%), which results in the characteristic combination of high stiffness, low creep, and good dimensional stability that defines Delrin’s engineering role. Dupont’s Delrin is a homopolymer acetal; Celanese Hostaform and other copolymer acetals have slightly different chemical resistance and thermal properties but similar mechanical characteristics.<\/p>\n

UHMW (ultra-high molecular weight polyethylene):<\/strong> UHMW is polyethylene with molecular weight in the range of 3.5\u20137.5 million g\/mol \u2014 approximately 100\u00d7 higher than standard HDPE. The extremely long molecular chains entangle extensively, creating a network that cannot flow and cannot be processed by conventional extrusion or injection molding (it is produced by compression molding or ram extrusion). The entangled chain structure is responsible for UHMW’s exceptional toughness and impact energy absorption, and for the self-lubricating behavior (the polyethylene surface has very low surface energy, producing a low friction interface).<\/p>\n

The engineering consequence:<\/strong> Delrin’s high crystallinity and compact chain structure produce a stiff, rigid polymer that holds its shape. UHMW’s entangled long-chain structure produces a soft, compliant polymer that deforms under load (creep) but resists fracture and sliding wear.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Property<\/th>\nDelrin (POM homopolymer)<\/th>\nUHMW Polyethylene<\/th>\n<\/tr>\n<\/thead>\n
Tensile strength<\/td>\n60\u201370 MPa<\/td>\n20\u201340 MPa<\/td>\n<\/tr>\n
Flexural modulus<\/td>\n2.8\u20133.2 GPa<\/td>\n0.6\u20131.0 GPa<\/td>\n<\/tr>\n
Elongation at break<\/td>\n25\u201340%<\/td>\n200\u2013400%<\/td>\n<\/tr>\n
Impact strength (Izod notched)<\/td>\n75\u2013100 J\/m<\/td>\n700\u20131,000+ J\/m (no break on unnotched specimens)<\/td>\n<\/tr>\n
Friction coefficient (dry, vs steel)<\/td>\n0.20\u20130.35<\/td>\n0.10\u20130.22<\/td>\n<\/tr>\n
Creep rate under sustained load<\/td>\nLow<\/td>\nModerate to significant<\/td>\n<\/tr>\n
Water absorption (24 hr)<\/td>\n0.20\u20130.25%<\/td>\n0.01%<\/td>\n<\/tr>\n
Service temperature (continuous)<\/td>\n-40 to +90\u00b0C<\/td>\n-200 to +80\u00b0C<\/td>\n<\/tr>\n
Density<\/td>\n1.41\u20131.43 g\/cm\u00b3<\/td>\n0.93\u20130.94 g\/cm\u00b3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Delrin: Precision, Stiffness, and Machinability<\/h2>\n

Delrin is the standard engineering plastic for machined components that must maintain dimensional accuracy over time. Its mechanical properties, combined with its clean machining behavior, make it the appropriate choice when function depends on tight geometry.<\/p>\n

Dimensional stability:<\/strong> Delrin’s low creep rate \u2014 substantially lower than UHMW \u2014 is the property that determines its suitability for precision applications. Under a sustained tensile stress of 20 MPa at room temperature, Delrin creep strain after 1,000 hours is approximately 0.5\u20131.5%, compared to UHMW’s 3\u20138% under the same conditions. In a precision bushing with a 50 mm bore held to a tolerance of \u00b10.025 mm, UHMW creep under assembly preload can produce dimensional drift of 0.05\u20130.15 mm over weeks or months, eliminating the clearance that the tolerance was designed to maintain.<\/p>\n

Machining behavior:<\/strong> Delrin machines cleanly at cutting speeds suitable for engineering plastics. It produces short, well-formed chips that evacuate from the cutting zone without wrapping, allowing consistent dimensional control and good surface finish (Ra 0.8\u20133.2 \u00b5m depending on operation and tooling). Achievable tolerances in production CNC machining of Delrin are \u00b10.025\u20130.050 mm for standard features; with appropriate process controls, \u00b10.010\u20130.025 mm is achievable on critical dimensions.<\/p>\n

Applications:<\/strong> Gears (maintains tooth profile accuracy under cyclic loading), precision bushings and bearings (maintains shaft clearance without creep), valve components (dimensional consistency for sealing), robotics and automation components (positional accuracy), medical device structural components (tolerance control and surface finish for precision assembly), and actuator housings.<\/p>\n

Limitation \u2014 impact resistance:<\/strong> Delrin’s higher modulus means it has lower notched impact energy absorption than UHMW. Under sudden impact loads, Delrin is more likely to crack than UHMW. For applications with shock loading, falling objects, or repeated impact, Delrin’s impact resistance should be evaluated against the specific loading conditions.<\/p>\n

Limitation \u2014 chemical resistance:<\/strong> Delrin is susceptible to degradation in strong acids, strong bases, and oxidizing environments. It also degrades slowly in the presence of chlorine. UHMW, as a simple carbon-chain polyethylene, has substantially broader chemical resistance and is appropriate for more aggressive chemical environments.<\/p>\n

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UHMW: Wear Resistance, Impact Toughness, and Low Friction<\/h2>\n

UHMW is the standard material for industrial wear applications where long service life under abrasion, impact, and sliding contact are the primary requirements. Its combination of ultra-low friction, high toughness, and abrasion resistance makes it outperform Delrin \u2014 and most other plastics \u2014 in these roles.<\/p>\n

Wear and abrasion resistance:<\/strong> UHMW’s abrasion resistance in dry sliding and abrasive particle environments is among the highest of any polymer. It outperforms most metals in sliding wear applications against bulk materials (grain, aggregate, sand, granular chemicals). In conveyor and material handling applications, UHMW wear strips and liners typically last 2\u20135\u00d7 longer than equivalent Delrin components under the same conditions.<\/p>\n

Impact energy absorption:<\/strong> UHMW’s notched Izod impact strength of 700\u20131,000+ J\/m (unnotched specimens do not break in the standard test) is approximately 10\u00d7 higher than Delrin. This difference is the result of the high molecular weight entangled chain network’s ability to absorb crack propagation energy. In impact pad, dump chute liner, and chain guide applications where parts absorb repeated mechanical shocks, UHMW is the appropriate choice.<\/p>\n

Friction and self-lubricating behavior:<\/strong> UHMW’s dry friction coefficient against polished steel of 0.10\u20130.22 is significantly lower than Delrin (0.20\u20130.35) and lower than most engineering plastics. The low surface energy of polyethylene produces this behavior without added lubrication. In conveyor guide and chain guide applications, UHMW can eliminate the need for grease lubrication, reducing maintenance requirements and contamination risk in food processing applications.<\/p>\n

FDA compliance:<\/strong> UHMW is available in FDA 21 CFR 177.1520-compliant grades for food contact, pharmaceutical processing, and medical device applications. These grades provide the same mechanical properties as standard UHMW with documented compliance for regulatory requirements.<\/p>\n

Applications:<\/strong> Conveyor wear strips and side guides, chain guides for power-and-free conveyors, dump chute liners, hopper and bin liners (prevents bridging of granular material), star wheels in packaging machinery, dock bumpers, truck bed liners, impact protection in material handling, and food processing sliding contact components.<\/p>\n

Limitation \u2014 dimensional stability:<\/strong> UHMW creep under sustained load is the primary limitation for precision applications. It is not suitable for precision gears, tight-tolerance bushings, or any application where a specific fit must be maintained under sustained mechanical loading.<\/p>\n

Limitation \u2014 machinability:<\/strong> UHMW is significantly more difficult to machine than Delrin. The low stiffness causes deflection under tool forces; the high elongation causes stringy chip formation rather than clean chip breaking; and the material can spring back after clamping, causing dimensional variation when the part is released. Tolerances tighter than \u00b10.100 mm are difficult to achieve consistently in UHMW production machining.<\/p>\n

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CNC Machining Comparison: Delrin Substantially Outperforms UHMW<\/h2>\n

For OEM programs requiring precision CNC machined plastic components, the machinability difference between Delrin and UHMW is significant and directly affects cost, tolerance capability, and production consistency.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Machining Factor<\/th>\nDelrin<\/th>\nUHMW<\/th>\n<\/tr>\n<\/thead>\n
Chip formation<\/td>\nShort, clean chips<\/td>\nLong stringy chips; wraps on tool<\/td>\n<\/tr>\n
Dimensional stability during cut<\/td>\nHigh (stiff, minimal deflection)<\/td>\nLow (deflects under tool force)<\/td>\n<\/tr>\n
Post-machining spring-back<\/td>\nMinimal<\/td>\nSignificant (can cause \u00b10.05\u20130.10 mm variation)<\/td>\n<\/tr>\n
Achievable tolerance (production)<\/td>\n\u00b10.025\u20130.050 mm<\/td>\n\u00b10.075\u20130.150 mm<\/td>\n<\/tr>\n
Surface finish (milling)<\/td>\nRa 0.8\u20131.6 \u00b5m<\/td>\nRa 1.6\u20136.3 \u00b5m<\/td>\n<\/tr>\n
Deburring requirement<\/td>\nMinimal<\/td>\nSignificant<\/td>\n<\/tr>\n
Cycle time relative<\/td>\nReference<\/td>\n30\u201360% longer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Why UHMW creates machining problems:<\/strong> The fundamental issue is that UHMW’s modulus of 0.6\u20131.0 GPa is approximately 3\u20135\u00d7 lower than Delrin. For a thin wall or small-diameter feature under lateral tool force, elastic deflection is inversely proportional to the modulus. A 3 mm wall in UHMW deflects approximately 3\u20135\u00d7 more under the same tool force as the same wall in Delrin. This deflection produces an error in the machined dimension: the tool removes material from a deflected surface, and when the tool force is removed, the surface springs back \u2014 leaving a dimension that is smaller than intended. In production machining where tolerances of \u00b10.050 mm or tighter are required, this behavior makes UHMW an unreliable choice.<\/p>\n

The chip formation problem:<\/strong> UHMW’s extremely high elongation (200\u2013400%) means it deforms extensively before fracturing. Rather than forming chips that break off cleanly, UHMW forms long stringy ribbons that wrap around the cutting tool, increasing heat generation, impeding chip evacuation, and creating the risk of tool breakage and surface damage on the part. This problem is most acute with small-diameter end mills (below approximately 6 mm) and at higher cutting speeds.<\/p>\n

Cost implication:<\/strong> The combined effects of longer cycle times (for lower feed rates needed to manage chip formation and deflection), higher deburring requirements, and increased scrap rate from dimensional variation typically make UHMW machining 30\u201360% more expensive per part than equivalent Delrin machining \u2014 partially or fully offsetting UHMW’s lower raw material cost for precision parts.<\/p>\n

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Application Selection by Category<\/h2>\n

Gears and Gear Components<\/h3>\n

Delrin is the standard material for machined or molded plastic gears. The governing property is dimensional stability: gear backlash is directly determined by the combined tolerance of the tooth geometry and the center distance. Delrin’s low creep maintains the tooth profile under cyclic loading; its modulus of ~3 GPa provides adequate stiffness to limit tooth deflection under torque. UHMW gears creep under cyclic tooth contact stress, producing progressive backlash increase and eventual gear system failure. For gear applications, Delrin is the correct material.<\/p>\n

Bushings, Bearings, and Precision Sliding Fits<\/h3>\n

For bushings and bearings requiring a maintained clearance to shaft (e.g., H7\/f7 or H7\/g6 fits for rotating shafts), Delrin’s low creep is essential. UHMW will creep under the diametral interference of a press-fit installation or under radial loads, changing the bore diameter over time. Delrin maintains the specified bore diameter within \u00b10.025\u20130.050 mm throughout normal service life.<\/p>\n

For bushings in lower-load, lower-precision applications where the primary requirement is low friction and abrasion resistance rather than precise clearance control, UHMW can be appropriate.<\/p>\n

Conveyor Wear Strips and Sliding Guides<\/h3>\n

UHMW is the standard material. The combination of low friction (\u03bc 0.10\u20130.22), high abrasion resistance, and FDA compliance (where required) makes it the optimal choice for continuous sliding contact applications. Delrin wear strips in conveyor applications wear faster under high-speed sliding with contamination (dust, particles, scale) than UHMW, and have no advantage in applications where tight tolerances are not required.<\/p>\n

Impact Protection and Liner Applications<\/h3>\n

UHMW is the standard material. Impact pads, chute liners, dock bumpers, and material handling liners require the high impact energy absorption (Izod 700+ J\/m) that UHMW provides. Delrin’s higher modulus means it absorbs less impact energy before reaching its fracture strain, making it more likely to crack under repeated impact.<\/p>\n

Food Processing and Pharmaceutical Applications<\/h3>\n

Both materials are available in FDA-compliant grades. For precision mechanical components in food processing equipment (gears, valve seats, pump components), Delrin is preferred for dimensional accuracy. For contact surfaces that see sliding abrasion with food products, UHMW is preferred for wear life and cleanability.<\/p>\n

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Cost Analysis<\/h2>\n\n\n\n\n\n\n\n\n\n
Cost Factor<\/th>\nDelrin<\/th>\nUHMW<\/th>\n<\/tr>\n<\/thead>\n
Raw material (approximate, rod stock)<\/td>\n$8\u2013$15\/kg<\/td>\n$4\u2013$8\/kg<\/td>\n<\/tr>\n
Machining time relative<\/td>\nReference<\/td>\n+30\u201360% for equivalent geometry<\/td>\n<\/tr>\n
Assembly rework (precision fits)<\/td>\nLow (stable dimensions)<\/td>\nHigher (creep requires adjustment)<\/td>\n<\/tr>\n
Service life (wear applications)<\/td>\nReference<\/td>\n2\u20135\u00d7 longer in sliding wear<\/td>\n<\/tr>\n
Maintenance interval (wear parts)<\/td>\nReference<\/td>\nLonger in abrasive applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The correct cost comparison depends on the application type:<\/strong><\/p>\n

For precision machined components (gears, bushings, housings): Delrin’s lower machining cost per part (shorter cycle time, lower deburring, lower scrap rate) frequently offsets its higher raw material cost, making the total per-part cost comparable to or lower than UHMW for equivalent complex geometry. Additionally, Delrin’s dimensional stability reduces assembly rework \u2014 a cost that is often not captured in the machining quote but is real in production.<\/p>\n

For wear strip and liner applications: UHMW’s lower raw material cost and 2\u20135\u00d7 longer service life in abrasive sliding applications produce lower lifecycle cost than Delrin in these roles. The rough geometry of wear strips does not require the precision machining where Delrin has a cost advantage.<\/p>\n

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DFM Considerations<\/h2>\n

Internal corner radii:<\/strong> Delrin machines cleanly to corner radii as small as 0.2\u20130.5 mm, matching the smallest practical end mill radius. UHMW requires larger internal radii (minimum 0.5\u20131.0 mm recommended) to avoid corner tearing and deformation during tool engagement.<\/p>\n

Wall thickness:<\/strong> Minimum practical wall thickness in Delrin is approximately 0.8\u20131.0 mm for supported features and 1.5\u20132.0 mm for unsupported walls. UHMW requires thicker minimum wall sections (1.5\u20132.0 mm supported, 3.0+ mm unsupported) to avoid deflection under tool force and vibration during machining.<\/p>\n

Tolerance specification:<\/strong> Specify tolerances appropriate to each material. Applying \u00b10.025 mm tolerances to UHMW parts in a design intended for Delrin, without updating to reflect the material change, is a common source of machining non-conformance. A realistic general tolerance for UHMW machined features is \u00b10.075\u20130.100 mm; for Delrin, \u00b10.025\u20130.050 mm is standard production capability.<\/p>\n

Thread features:<\/strong> Delrin holds thread tolerance well in tapped holes (recommend 1.5\u20132\u00d7 diameter engagement for M3\u2013M8 in Delrin, 2\u20133\u00d7 for UHMW due to lower shear strength). UHMW threads are susceptible to stripping under overtorque because the material flows rather than fracturing at the thread root. For UHMW components with threaded features subject to repeated assembly, consider Delrin inserts or metal threaded inserts.<\/p>\n

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Key Takeaways<\/h2>\n
    \n
  • Delrin (POM) is the correct material for precision machined plastic components<\/strong>: modulus of ~3 GPa, low creep, and clean machining behavior produce production tolerances of \u00b10.025\u20130.050 mm and dimensional stability in precision fits over the part’s service life. Gears, bushings, valve components, and precision housings are standard Delrin applications.<\/li>\n
  • UHMW is the correct material for wear, impact, and sliding contact applications<\/strong>: friction coefficient of 0.10\u20130.22 (approximately 50% lower than Delrin), Izod impact strength of 700+ J\/m (approximately 10\u00d7 Delrin), and excellent abrasion resistance in particle-contaminated environments make UHMW the standard for conveyor wear strips, liners, chain guides, and impact pads.<\/li>\n
  • UHMW creep under load is the primary reason not to use it for precision components<\/strong>: under sustained stress of 20 MPa, UHMW creep strain is 3\u20138% over 1,000 hours versus Delrin’s 0.5\u20131.5%. In a precision bushing, this translates to dimensional drift of 0.05\u20130.15 mm that eliminates the designed clearance and produces misalignment.<\/li>\n
  • Delrin machines more cost-effectively than UHMW for precision geometry<\/strong>: cycle times are 30\u201360% shorter, deburring is minimal, and scrap rates from dimensional variation are lower \u2014 partially or fully offsetting Delrin’s higher raw material cost.<\/li>\n
  • Do not substitute one for the other based on availability or price without evaluating the application<\/strong>: the most common failures are (a) UHMW used in a precision gear or bushing application, producing dimensional drift; and (b) Delrin used in a high-abrasion sliding contact application, wearing 2\u20135\u00d7 faster than UHMW.<\/li>\n
  • Both materials are available in FDA-compliant grades for food and pharmaceutical contact<\/strong>: UHMW is preferred for sliding contact surfaces; Delrin is preferred for precision mechanical components in food processing equipment.<\/li>\n
  • For OEM procurement teams<\/strong>: when drawing revisions change the plastic material specification from Delrin to UHMW or vice versa, the tolerance callouts must also be reviewed. Tolerances appropriate for Delrin (\u00b10.025\u20130.050 mm) are typically beyond reliable production capability for UHMW machined features, and leaving them unchanged will produce systematic non-conformance.<\/li>\n<\/ul>\n
    \n

    Frequently Asked Questions<\/h2>\n

    What is the difference between Delrin and UHMW?<\/h3>\n

    Delrin (POM, polyoxymethylene) is a semi-crystalline acetal engineering polymer with high stiffness (modulus ~3 GPa), low creep, and good machinability \u2014 designed for precision components. UHMW (ultra-high molecular weight polyethylene) is a polyethylene with very long molecular chains that produce exceptional toughness (Izod impact 700+ J\/m), low friction (\u03bc 0.10\u20130.22), and abrasion resistance \u2014 designed for wear and sliding contact applications. The critical engineering difference is that Delrin maintains its dimensions under sustained load (low creep), while UHMW deforms progressively under sustained stress (higher creep). This means Delrin holds a \u00b10.025\u20130.050 mm tolerance in a precision fit; UHMW may drift by 0.05\u20130.15 mm over time in the same application, causing misalignment.<\/p>\n

    Which is better for CNC machined plastic gears \u2014 Delrin or UHMW?<\/h3>\n

    Delrin is the correct choice for machined plastic gears. The governing property is dimensional stability: a gear’s backlash is directly determined by the tooth profile tolerance and center distance. Delrin’s low creep rate maintains the tooth profile under cyclic loading, while UHMW creeps under repeated tooth contact stress, producing progressive backlash increase. Delrin also machines more precisely \u2014 achievable tooth profile tolerance in Delrin is \u00b10.025\u20130.050 mm, compared to \u00b10.075\u20130.150 mm in UHMW. Additionally, Delrin’s modulus of ~3 GPa limits tooth deflection under torque; UHMW’s lower modulus (~0.8 GPa) produces greater tooth deflection at equivalent loads, further increasing effective backlash during operation.<\/p>\n

    Is UHMW harder to machine than Delrin?<\/h3>\n

    Yes, significantly. UHMW’s low stiffness (~0.8 GPa) causes elastic deflection under tool forces, producing dimensional errors when the part springs back after the tool passes. The very high elongation (200\u2013400%) produces stringy chips that wrap around cutting tools rather than breaking off cleanly \u2014 causing heat buildup, chip evacuation problems, and potential surface damage. Production tolerances on UHMW are typically limited to \u00b10.075\u20130.150 mm, compared to \u00b10.025\u20130.050 mm for Delrin. Cycle times for equivalent UHMW geometry are 30\u201360% longer due to lower feed rates needed to manage deflection and chip formation. For precision machined plastic parts, Delrin produces more consistent, lower-cost results.<\/p>\n

    When should UHMW be chosen over Delrin?<\/h3>\n

    UHMW is the correct choice for applications dominated by sliding wear, abrasion from bulk materials, or impact loading. In conveyor wear strips exposed to high-speed sliding with product and debris abrasion, UHMW lasts 2\u20135\u00d7 longer than Delrin. In chain guide applications with continuous sliding contact under tension, UHMW’s lower friction coefficient (0.10\u20130.22 vs 0.20\u20130.35) reduces chain drive energy consumption and the lubricant-free operation reduces maintenance. In impact pad and chute liner applications, UHMW’s Izod impact strength of 700+ J\/m (versus approximately 80 J\/m for Delrin) prevents brittle fracture under repeated shock loads that would crack Delrin. The common denominator: UHMW is the right choice when long service life under physical abuse \u2014 sliding, abrasion, impact \u2014 is the primary requirement and tight dimensional tolerance is not.<\/p>\n

    Can UHMW replace Delrin in existing designs?<\/h3>\n

    Not without review. Dropping UHMW into a design specified for Delrin requires evaluating three things: dimensional stability (UHMW creep will change fits and clearances specified for Delrin’s lower creep rate), tolerance capability (Delrin tolerances of \u00b10.025\u20130.050 mm are typically unachievable in UHMW machining \u2014 tolerances must be reviewed and potentially relaxed), and mechanical performance (UHMW’s lower modulus will produce more deflection under load in stiffness-critical features). For non-precision wear parts where the Delrin design is being replaced by UHMW to improve wear life, the substitution can be straightforward. For precision components, a dimensional analysis of the impact of UHMW’s higher creep rate and lower machining precision on assembly function is required before the substitution.<\/p>\n

    \n

    Written by the CMS engineering team with 15+ years of precision CNC machining experience producing components in Delrin (POM), UHMW, PEEK, nylon, and other engineering plastics for medical device, food processing, industrial automation, packaging machinery, and conveyor OEM manufacturing programs. Technical references: DuPont Delrin Design Guide (Mechanical Properties and Design), Ticona Celanese Hostaform POM Design Manual, Quadrant EPP UHMW-PE Material Properties Guide, ASM Handbook Vol. 21 (Plastics \u2014 Engineering Resins, Machining and Fabrication).<\/em><\/p>\n

    \n

    Sourcing Precision CNC Machined Plastic Components?<\/strong><\/p>\n

    At CMS, we machine Delrin, UHMW, PEEK, nylon, and engineering plastics to tight tolerances \u2014 with material selection guidance at the quoting stage, DFM review for plastic-specific constraints (wall thickness, corner radii, thread engagement), and CMM first-article inspection reports.<\/p>\n

    [Request a material selection review and plastic CNC machining quote \u2192]<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    Delrin vs UHMW: compare stiffness, creep, wear resistance, machinability & cost. Choose POM for precision gears\/bushings; UHMW for wear strips and impact pads.<\/p>","protected":false},"author":1,"featured_media":11847,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-11721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-guide"],"yoast_head":"\nDelrin vs UHMW: Which Engineering Plastic Should You Use?<\/title>\n<meta name=\"description\" content=\"Delrin vs UHMW: compare stiffness, creep, wear resistance, machinability & cost. 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