Technopolymer vs. steel gears: complete guide to metal replacement<\/title>\n\n <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin=\"\">\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&display=swap\" rel=\"stylesheet\">\n\n <link rel=\"stylesheet\" href=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.10\/dist\/katex.min.css\">\n <script defer=\"\" src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.10\/dist\/katex.min.js\"><\/script>\n <script defer=\"\" src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.10\/dist\/contrib\/auto-render.min.js\" onload=\"renderMathInElement(document.body, {\n delimiters: [\n { left: '$$', right: '$$', display: true },\n { left: '$', right: '$', display: false }\n ]\n });\"><\/script>\n\n <style>\n *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n\n :root {\n --green: #1a6b3c;\n --green-dark: #0f4a28;\n --green-mid: #2d8a55;\n --green-light: #e8f4ed;\n --green-xlight: #f2faf5;\n --amber: #b45309;\n --amber-light: #fef3c7;\n\n --bg: #ffffff;\n --bg-soft: #f8f9fa;\n --bg-muted: #f1f3f5;\n --border: #e5e7eb;\n --border-mid: #d1d5db;\n\n --text-primary: #111827;\n --text-secondary: #4b5563;\n --text-muted: #9ca3af;\n\n --radius-sm: 6px;\n --radius-md: 8px;\n --radius-lg: 12px;\n --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);\n --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);\n }\n\n body { min-height: 100vh; 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It's about understanding when a technopolymer can do better than the metal component you're using now.\",\n \"inLanguage\": \"en\"\n }\n ]\n}\n<\/script>\n\n\n\n <h1 class=\"article__title\">Technopolymer vs. steel gears: complete guide to metal replacement<\/h1>\n<p class=\"article__subtitle\">Metal replacement isn’t about simply replacing metal with plastic. It’s about understanding when a technopolymer can do better than the metal component you’re using now.<\/p>\n<p class=\"article__p\">Replacing steel, brass or bronze with an advanced technopolymer isn’t a fallback choice: it can bring concrete advantages in weight, performance and environmental impact. But it requires accurate technical data, application tests and a dedicated design. A technopolymer gear isn’t an identical copy of a steel one: it’s a component redesigned around the material’s characteristics.<\/p>\n<h2 class=\"article__h2\" id=\"technical-characteristics-compared\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"18\" y1=\"20\" x2=\"18\" y2=\"10\"><\/line><line x1=\"12\" y1=\"20\" x2=\"12\" y2=\"4\"><\/line><line x1=\"6\" y1=\"20\" x2=\"6\" y2=\"14\"><\/line><\/svg><\/span>\n Technical characteristics compared\n<\/h2>\n<p class=\"article__p\">Steel and technopolymers follow different design logics. Steel excels in mechanical strength: it withstands high loads and guarantees structural stiffness that maintains precision to a tenth of a millimeter. Technopolymers offer advantages instead in weight, noise, friction, lubrication and corrosion resistance.<\/p>\n<p class=\"article__p\">Among the technopolymers most used for gears are <strong>glass-fiber PA6 (PA6+GF)<\/strong>, <strong>POM-C (polyoxymethylene)<\/strong> and <strong>PK (polyketone)<\/strong>. They answer to different application logics and cover a wide range of industrial needs.<\/p>\n<div class=\"article__table-wrap\">\n<table class=\"article__table\">\n<thead><tr><th>Property<\/th><th>PA6 + glass fiber<\/th><th>POM-C (polyoxymethylene)<\/th><th>PK (polyketone)<\/th><th>Gear steel<\/th><\/tr><\/thead>\n<tbody><tr><td>Specific weight<\/td><td>about 1.36 g\/cm\u00b3<\/td><td>about 1.41 g\/cm\u00b3<\/td><td>$about 1.24\u20131.3 g\/cm^3$<\/td><td>about 7.8 g\/cm\u00b3<\/td><\/tr>\n<tr><td>Tensile strength<\/td><td>110 (COND.)\u2013175 (DAM) MPa<\/td><td>65\u201375 MPa<\/td><td>70\u201380 MPa<\/td><td>800\u20131,200 MPa<\/td><\/tr>\n<tr><td>Elastic modulus<\/td><td>5.5 (COND.)\u20139 (DAM) GPa<\/td><td>2.8\u20133.2 GPa<\/td><td>1.5\u20131.8 GPa<\/td><td>190\u2013210 GPa<\/td><\/tr>\n<tr><td>Friction coefficient<\/td><td>medium<\/td><td>low<\/td><td>low<\/td><td>low only with lubrication<\/td><\/tr>\n<tr><td>Corrosion<\/td><td>resistant in industrial environments<\/td><td>excellent chemical resistance<\/td><td>excellent chemical resistance<\/td><td>requires protection or alloys<\/td><\/tr>\n<tr><td>Continuous temperature<\/td><td>up to 110\u2013120\u00b0C with load<\/td><td>about 80\u201390\u00b0C<\/td><td>up to 100\u00b0C<\/td><td>over 200\u00b0C, up to 400\u2013500\u00b0C<\/td><\/tr>\n<tr><td>Dimensional stability<\/td><td>sensitive to moisture<\/td><td>excellent, low moisture absorption<\/td><td>stable, low moisture absorption<\/td><td>very high<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<h2 class=\"article__h2\" style=\"border-bottom: none; padding-bottom: 0; margin-top: 48px;\" id=\"advantages-of-metal-replacement-with-pa6gf-pom-c-and-pk\">Advantages of metal replacement with PA6+GF, POM-C and PK<\/h2>\n<h2 class=\"article__h2\" id=\"weight-reduction-and-improved-energy-efficiency\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"><\/polygon><\/svg><\/span>\n Weight reduction and improved energy efficiency\n<\/h2>\n<p class=\"article__p\">The specific weight of PA6+GF, POM-C and PK ranges between 1.3 and 1.4 g\/$cm^3$, against about 7.8 g\/$cm^3$ for steel. <strong>The mass saving can reach 80\u201385%<\/strong>.<\/p>\n<p class=\"article__p\">Less mass means less rotational inertia: a direct advantage in high-speed applications or in transmission systems where efficiency and response speed matter. It also means lower overall energy consumption, components easier to handle and mount, lower operating costs.<\/p>\n<h2 class=\"article__h2\" id=\"corrosion-resistance-and-chemical-compatibility\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"><\/path><\/svg><\/span>\n Corrosion resistance and chemical compatibility\n<\/h2>\n<p class=\"article__p\">In many environments, steel requires surface treatments, stainless alloys or protective coatings to resist oxidation and electrochemical corrosion. Technopolymers start out resistant.<\/p>\n<p class=\"article__p\">PA6+GF, POM-C and PK answer to different needs, though. PA6+GF offers the highest mechanical strength among the three and an excellent cost\/performance ratio: in humid environments, calculate the clearance taking into account <strong>moisture absorption<\/strong>, a parameter managed at the design stage. POM-C is preferable when dimensional stability is the priority and loads are moderate. PK is the choice for chemically aggressive environments or when you want to eliminate maintenance entirely.<\/p>\n<p class=\"article__p\">These materials are particularly suited to the food, pharmaceutical and medical sectors, where the absence of corrosion and the possibility of frequent washing and sterilization are essential requirements.<\/p>\n<h2 class=\"article__h2\" id=\"quiet-operation-and-reduced-wear\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polygon points=\"11 5 6 9 2 9 2 15 6 15 11 19 11 5\"><\/polygon><path d=\"M19.07 4.93a10 10 0 0 1 0 14.14\"><\/path><path d=\"M15.54 8.46a5 5 0 0 1 0 7.07\"><\/path><\/svg><\/span>\n Quiet operation and reduced wear\n<\/h2>\n<p class=\"article__p\">Technopolymer gears damp vibration and shocks better than steel. The result is quieter operation, relevant in household appliances, medical devices and industrial automation where acoustic comfort is a requirement.<\/p>\n<p class=\"article__p\">Technopolymers often also have self-lubricating properties that allow dry running or running with minimal lubrication. Less maintenance, less risk of contamination from lubricants, lower costs: a concrete advantage in regulated sectors.<\/p>\n<h2 class=\"article__h2\" id=\"design-and-functional-integration\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"9\" y1=\"18\" x2=\"15\" y2=\"18\"><\/line><line x1=\"10\" y1=\"22\" x2=\"14\" y2=\"22\"><\/line><path d=\"M15.09 14c.18-.98.65-1.74 1.41-2.5A4.65 4.65 0 0 0 18 8 6 6 0 0 0 6 8c0 1 .23 2.23 1.5 3.5A4.61 4.61 0 0 1 8.91 14\"><\/path><\/svg><\/span>\n Design and functional integration\n<\/h2>\n<p class=\"article__p\">Injection molding allows complex geometries and the integration of multiple functions into a single piece. Separate seals or inserts, in many cases, are no longer needed. Fewer components to assemble, fewer failure points, lower production costs.<\/p>\n<p class=\"article__p\">This flexibility also lets you optimize the tooth geometry to compensate for the lower stiffness relative to steel, maintaining high performance over time.<\/p>\n<h2 class=\"article__h2\" id=\"limitations-and-design-considerations\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z\"><\/path><line x1=\"12\" y1=\"9\" x2=\"12\" y2=\"13\"><\/line><line x1=\"12\" y1=\"17\" x2=\"12.01\" y2=\"17\"><\/line><\/svg><\/span>\n Limitations and design considerations\n<\/h2>\n<p class=\"article__p\">The mechanical strength and elastic modulus of technopolymers are lower than steel. This limits their use in applications with high loads, repeated shocks or extreme temperatures.<\/p>\n<p class=\"article__p\">At the design stage, plan compensations: increase the module or tooth width, evaluate the life cycle and the real operating conditions.<\/p>\n<p class=\"article__p\">The maximum service temperature is another factor to keep under control. PA6+GF reaches about 110\u2013120\u00b0C with load, PK about 100\u00b0C, POM-C about 80\u201390\u00b0C. If you exceed these limits, metal remains the necessary choice.<\/p>\n<div class=\"warnbox\">\n <div class=\"warnbox__title\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z\"><\/path><line x1=\"12\" y1=\"9\" x2=\"12\" y2=\"13\"><\/line><line x1=\"12\" y1=\"17\" x2=\"12.01\" y2=\"17\"><\/line><\/svg>\n Warning\n <\/div>\n <p class=\"warnbox__text\"><strong>Don’t size the technopolymer gear as if it were steel.<\/strong> The tooth geometry must be redesigned: a direct transfer of the dimensions almost always leads to underestimating the real stresses.<\/p>\n<\/div>\n<h2 class=\"article__h2\" id=\"typical-applications-and-selection-criteria\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polyline points=\"9 11 12 14 22 4\"><\/polyline><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"><\/path><\/svg><\/span>\n Typical applications and selection criteria\n<\/h2>\n<p class=\"article__p\">PA6+GF gears are generally the right choice for demanding industrial applications that need good mechanical strength and stiffness: reducers, conveyors, automatic machines. It offers the best cost\/performance ratio among the three materials and superior toughness.<\/p>\n<p class=\"article__p\">POM-C is preferable for gears that require dimensional precision, quietness and high speeds with low torque: compact gearmotors and precision automation are the typical application field.<\/p>\n<p class=\"article__p\">PK is the most suitable solution for critical environments with requirements for chemical resistance, thermal stability and low maintenance. Food, pharmaceutical and medical packaging are the sectors where it’s chosen most often.<\/p>\n<p class=\"article__p\"><strong>Before starting series production, consider these points:<\/strong><\/p>\n<ul class=\"article__list\">\n <li>Assess load, speed, environment and operating temperature precisely, not by estimate.<\/li>\n <li>Account for the moisture absorption of PA6+GF and calculate the mating clearances accordingly.<\/li>\n <li>Verify material compatibility with the reference standards for your sector.<\/li>\n <li>Optimize the tooth geometry to compensate for the lower stiffness relative to steel.<\/li>\n <li>Prototype and test durability before moving to series.<\/li>\n<\/ul>\n<div class=\"infobox\">\n <div class=\"infobox__title\" style=\"font-weight: 400;\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z\"><\/path><polyline points=\"22,6 12,13 2,6\"><\/polyline><\/svg>\n Ask us\n <\/div>\n <p class=\"infobox__text\"> If your system’s operating conditions fall outside the standard parameters, <a href=\"https:\/\/shop.stagnoligears.com\/en\/contacts\/\" target=\"_blank\" rel=\"noopener\" class=\"cta-link\">write<\/a> to the technical office We calculate the right configuration for you.<\/p>\n<\/div>\n\n <\/div>\n <\/div>\n <\/div>\n\n\n<script>\n (function () {\n var hideTimers = {};\n function positionTooltip(trigger, tooltip) {\n var margin = 8;\n tooltip.style.visibility = 'hidden';\n tooltip.style.top = '-9999px';\n tooltip.style.left = '-9999px';\n tooltip.removeAttribute('hidden');\n var ttRect = tooltip.getBoundingClientRect();\n var trRect = trigger.getBoundingClientRect();\n var vw = window.innerWidth, vh = window.innerHeight;\n var top = trRect.bottom + margin;\n var left = trRect.left;\n if (top + 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insulation.<\/p>\n","protected":false},"parent":0,"template":"","meta":{"_acf_changed":false},"campo-applicazione":[5461],"categoria-ct":[5443],"class_list":["post-25588","centro-tecnico","type-centro-tecnico","status-publish","hentry","campo-applicazione-comparisons","categoria-ct-materials-and-technopolymer-selection"],"acf":[],"yoast_head":"\n<title>Technopolymer vs Steel Gears: Metal Replacement | Stagnoli Gears Shop<\/title>\n<meta name=\"description\" content=\"Compare technopolymer and steel gears for metal replacement, including weight, strength, friction, noise, corrosion resistance and design limits.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/shop.stagnoligears.com\/en\/technical-hub\/technopolymer-vs-steel-gears-complete-guide-to-metal-replacement\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" 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It's about understanding when a technopolymer can do better than the metal component you're using now.\",\n \"inLanguage\": \"en\"\n }\n ]\n}\n<\/script>\n\n\n\n <h1 class=\"article__title\">Technopolymer vs. steel gears: complete guide to metal replacement<\/h1>\n<p class=\"article__subtitle\">Metal replacement isn’t about simply replacing metal with plastic. It’s about understanding when a technopolymer can do better than the metal component you’re using now.<\/p>\n<p class=\"article__p\">Replacing steel, brass or bronze with an advanced technopolymer isn’t a fallback choice: it can bring concrete advantages in weight, performance and environmental impact. But it requires accurate technical data, application tests and a dedicated design. A technopolymer gear isn’t an identical copy of a steel one: it’s a component redesigned around the material’s characteristics.<\/p>\n<h2 class=\"article__h2\" id=\"technical-characteristics-compared\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"18\" y1=\"20\" x2=\"18\" y2=\"10\"><\/line><line x1=\"12\" y1=\"20\" x2=\"12\" y2=\"4\"><\/line><line x1=\"6\" y1=\"20\" x2=\"6\" y2=\"14\"><\/line><\/svg><\/span>\n Technical characteristics compared\n<\/h2>\n<p class=\"article__p\">Steel and technopolymers follow different design logics. Steel excels in mechanical strength: it withstands high loads and guarantees structural stiffness that maintains precision to a tenth of a millimeter. Technopolymers offer advantages instead in weight, noise, friction, lubrication and corrosion resistance.<\/p>\n<p class=\"article__p\">Among the technopolymers most used for gears are <strong>glass-fiber PA6 (PA6+GF)<\/strong>, <strong>POM-C (polyoxymethylene)<\/strong> and <strong>PK (polyketone)<\/strong>. They answer to different application logics and cover a wide range of industrial needs.<\/p>\n<div class=\"article__table-wrap\">\n<table class=\"article__table\">\n<thead><tr><th>Property<\/th><th>PA6 + glass fiber<\/th><th>POM-C (polyoxymethylene)<\/th><th>PK (polyketone)<\/th><th>Gear steel<\/th><\/tr><\/thead>\n<tbody><tr><td>Specific weight<\/td><td>about 1.36 g\/cm\u00b3<\/td><td>about 1.41 g\/cm\u00b3<\/td><td>$about 1.24\u20131.3 g\/cm^3$<\/td><td>about 7.8 g\/cm\u00b3<\/td><\/tr>\n<tr><td>Tensile strength<\/td><td>110 (COND.)\u2013175 (DAM) MPa<\/td><td>65\u201375 MPa<\/td><td>70\u201380 MPa<\/td><td>800\u20131,200 MPa<\/td><\/tr>\n<tr><td>Elastic modulus<\/td><td>5.5 (COND.)\u20139 (DAM) GPa<\/td><td>2.8\u20133.2 GPa<\/td><td>1.5\u20131.8 GPa<\/td><td>190\u2013210 GPa<\/td><\/tr>\n<tr><td>Friction coefficient<\/td><td>medium<\/td><td>low<\/td><td>low<\/td><td>low only with lubrication<\/td><\/tr>\n<tr><td>Corrosion<\/td><td>resistant in industrial environments<\/td><td>excellent chemical resistance<\/td><td>excellent chemical resistance<\/td><td>requires protection or alloys<\/td><\/tr>\n<tr><td>Continuous temperature<\/td><td>up to 110\u2013120\u00b0C with load<\/td><td>about 80\u201390\u00b0C<\/td><td>up to 100\u00b0C<\/td><td>over 200\u00b0C, up to 400\u2013500\u00b0C<\/td><\/tr>\n<tr><td>Dimensional stability<\/td><td>sensitive to moisture<\/td><td>excellent, low moisture absorption<\/td><td>stable, low moisture absorption<\/td><td>very high<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<h2 class=\"article__h2\" style=\"border-bottom: none; padding-bottom: 0; margin-top: 48px;\" id=\"advantages-of-metal-replacement-with-pa6gf-pom-c-and-pk\">Advantages of metal replacement with PA6+GF, POM-C and PK<\/h2>\n<h2 class=\"article__h2\" id=\"weight-reduction-and-improved-energy-efficiency\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"><\/polygon><\/svg><\/span>\n Weight reduction and improved energy efficiency\n<\/h2>\n<p class=\"article__p\">The specific weight of PA6+GF, POM-C and PK ranges between 1.3 and 1.4 g\/$cm^3$, against about 7.8 g\/$cm^3$ for steel. <strong>The mass saving can reach 80\u201385%<\/strong>.<\/p>\n<p class=\"article__p\">Less mass means less rotational inertia: a direct advantage in high-speed applications or in transmission systems where efficiency and response speed matter. It also means lower overall energy consumption, components easier to handle and mount, lower operating costs.<\/p>\n<h2 class=\"article__h2\" id=\"corrosion-resistance-and-chemical-compatibility\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"><\/path><\/svg><\/span>\n Corrosion resistance and chemical compatibility\n<\/h2>\n<p class=\"article__p\">In many environments, steel requires surface treatments, stainless alloys or protective coatings to resist oxidation and electrochemical corrosion. Technopolymers start out resistant.<\/p>\n<p class=\"article__p\">PA6+GF, POM-C and PK answer to different needs, though. PA6+GF offers the highest mechanical strength among the three and an excellent cost\/performance ratio: in humid environments, calculate the clearance taking into account <strong>moisture absorption<\/strong>, a parameter managed at the design stage. POM-C is preferable when dimensional stability is the priority and loads are moderate. PK is the choice for chemically aggressive environments or when you want to eliminate maintenance entirely.<\/p>\n<p class=\"article__p\">These materials are particularly suited to the food, pharmaceutical and medical sectors, where the absence of corrosion and the possibility of frequent washing and sterilization are essential requirements.<\/p>\n<h2 class=\"article__h2\" id=\"quiet-operation-and-reduced-wear\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polygon points=\"11 5 6 9 2 9 2 15 6 15 11 19 11 5\"><\/polygon><path d=\"M19.07 4.93a10 10 0 0 1 0 14.14\"><\/path><path d=\"M15.54 8.46a5 5 0 0 1 0 7.07\"><\/path><\/svg><\/span>\n Quiet operation and reduced wear\n<\/h2>\n<p class=\"article__p\">Technopolymer gears damp vibration and shocks better than steel. The result is quieter operation, relevant in household appliances, medical devices and industrial automation where acoustic comfort is a requirement.<\/p>\n<p class=\"article__p\">Technopolymers often also have self-lubricating properties that allow dry running or running with minimal lubrication. Less maintenance, less risk of contamination from lubricants, lower costs: a concrete advantage in regulated sectors.<\/p>\n<h2 class=\"article__h2\" id=\"design-and-functional-integration\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"9\" y1=\"18\" x2=\"15\" y2=\"18\"><\/line><line x1=\"10\" y1=\"22\" x2=\"14\" y2=\"22\"><\/line><path d=\"M15.09 14c.18-.98.65-1.74 1.41-2.5A4.65 4.65 0 0 0 18 8 6 6 0 0 0 6 8c0 1 .23 2.23 1.5 3.5A4.61 4.61 0 0 1 8.91 14\"><\/path><\/svg><\/span>\n Design and functional integration\n<\/h2>\n<p class=\"article__p\">Injection molding allows complex geometries and the integration of multiple functions into a single piece. Separate seals or inserts, in many cases, are no longer needed. Fewer components to assemble, fewer failure points, lower production costs.<\/p>\n<p class=\"article__p\">This flexibility also lets you optimize the tooth geometry to compensate for the lower stiffness relative to steel, maintaining high performance over time.<\/p>\n<h2 class=\"article__h2\" id=\"limitations-and-design-considerations\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z\"><\/path><line x1=\"12\" y1=\"9\" x2=\"12\" y2=\"13\"><\/line><line x1=\"12\" y1=\"17\" x2=\"12.01\" y2=\"17\"><\/line><\/svg><\/span>\n Limitations and design considerations\n<\/h2>\n<p class=\"article__p\">The mechanical strength and elastic modulus of technopolymers are lower than steel. This limits their use in applications with high loads, repeated shocks or extreme temperatures.<\/p>\n<p class=\"article__p\">At the design stage, plan compensations: increase the module or tooth width, evaluate the life cycle and the real operating conditions.<\/p>\n<p class=\"article__p\">The maximum service temperature is another factor to keep under control. PA6+GF reaches about 110\u2013120\u00b0C with load, PK about 100\u00b0C, POM-C about 80\u201390\u00b0C. If you exceed these limits, metal remains the necessary choice.<\/p>\n<div class=\"warnbox\">\n <div class=\"warnbox__title\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z\"><\/path><line x1=\"12\" y1=\"9\" x2=\"12\" y2=\"13\"><\/line><line x1=\"12\" y1=\"17\" x2=\"12.01\" y2=\"17\"><\/line><\/svg>\n Warning\n <\/div>\n <p class=\"warnbox__text\"><strong>Don’t size the technopolymer gear as if it were steel.<\/strong> The tooth geometry must be redesigned: a direct transfer of the dimensions almost always leads to underestimating the real stresses.<\/p>\n<\/div>\n<h2 class=\"article__h2\" id=\"typical-applications-and-selection-criteria\">\n <span class=\"article__h2-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polyline points=\"9 11 12 14 22 4\"><\/polyline><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"><\/path><\/svg><\/span>\n Typical applications and selection criteria\n<\/h2>\n<p class=\"article__p\">PA6+GF gears are generally the right choice for demanding industrial applications that need good mechanical strength and stiffness: reducers, conveyors, automatic machines. It offers the best cost\/performance ratio among the three materials and superior toughness.<\/p>\n<p class=\"article__p\">POM-C is preferable for gears that require dimensional precision, quietness and high speeds with low torque: compact gearmotors and precision automation are the typical application field.<\/p>\n<p class=\"article__p\">PK is the most suitable solution for critical environments with requirements for chemical resistance, thermal stability and low maintenance. Food, pharmaceutical and medical packaging are the sectors where it’s chosen most often.<\/p>\n<p class=\"article__p\"><strong>Before starting series production, consider these points:<\/strong><\/p>\n<ul class=\"article__list\">\n <li>Assess load, speed, environment and operating temperature precisely, not by estimate.<\/li>\n <li>Account for the moisture absorption of PA6+GF and calculate the mating clearances accordingly.<\/li>\n <li>Verify material compatibility with the reference standards for your sector.<\/li>\n <li>Optimize the tooth geometry to compensate for the lower stiffness relative to steel.<\/li>\n <li>Prototype and test durability before moving to series.<\/li>\n<\/ul>\n<div class=\"infobox\">\n <div class=\"infobox__title\" style=\"font-weight: 400;\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z\"><\/path><polyline points=\"22,6 12,13 2,6\"><\/polyline><\/svg>\n Ask us\n <\/div>\n <p class=\"infobox__text\"> If your system’s operating conditions fall outside the standard parameters, <a href=\"https:\/\/shop.stagnoligears.com\/en\/contacts\/\" target=\"_blank\" rel=\"noopener\" class=\"cta-link\">write<\/a> to the technical office We calculate the right configuration for you.<\/p>\n<\/div>\n\n <\/div>\n <\/div>\n <\/div>\n\n\n<script>\n (function () {\n var hideTimers = {};\n function positionTooltip(trigger, tooltip) {\n var margin = 8;\n tooltip.style.visibility = 'hidden';\n tooltip.style.top = '-9999px';\n tooltip.style.left = '-9999px';\n tooltip.removeAttribute('hidden');\n var ttRect = tooltip.getBoundingClientRect();\n var trRect = trigger.getBoundingClientRect();\n var vw = window.innerWidth, vh = window.innerHeight;\n var top = trRect.bottom + margin;\n var left = trRect.left;\n if (top + 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insulation.<\/p>\n","protected":false},"parent":0,"template":"","meta":{"_acf_changed":false},"campo-applicazione":[5461],"categoria-ct":[5443],"class_list":["post-25588","centro-tecnico","type-centro-tecnico","status-publish","hentry","campo-applicazione-comparisons","categoria-ct-materials-and-technopolymer-selection"],"acf":[],"yoast_head":"\n<title>Technopolymer vs Steel Gears: Metal Replacement | Stagnoli Gears Shop<\/title>\n<meta name=\"description\" content=\"Compare technopolymer and steel gears for metal replacement, including weight, strength, friction, noise, corrosion resistance and design limits.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/shop.stagnoligears.com\/en\/technical-hub\/technopolymer-vs-steel-gears-complete-guide-to-metal-replacement\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" 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