{"id":3911,"date":"2026-04-22T06:17:19","date_gmt":"2026-04-22T06:17:19","guid":{"rendered":"https:\/\/nylonplastic.com\/nylon-6-vs-nylon-66-engineering-plastic-selection-guide-2\/"},"modified":"2026-04-22T09:33:54","modified_gmt":"2026-04-22T09:33:54","slug":"nylon-6-vs-nylon-66-engineering-plastic-selection-guide-2","status":"publish","type":"post","link":"https:\/\/nylonplastic.com\/de\/nylon-6-vs-nylon-66-engineering-plastic-selection-guide-2\/","title":{"rendered":"Nylon 6 vs Nylon 66 \u2014 Engineering Plastic Selection Guide"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/nylonplastic.com\/wp-content\/uploads\/2026\/04\/nylon-6-vs-nylon-66-engineering-plastic-selection-guide-intro.jpg\" alt=\"nylon 6 plastic pellets granules industrial packaging\" title=\"Nylon 6 vs Nylon 66\" style=\"max-width:100%;height:auto;\"\/><\/figure>\n<h2>Chemical Structure Differences<\/h2>\n<p>The fundamental difference between <strong>PA6 (Nylon 6)<\/strong> und <strong>PA66 (Nylon 66)<\/strong> lies in their molecular structure:<\/p>\n<ul>\n<li><strong>Nylon 6:<\/strong> Made from caprolactam, has 6 carbon atoms in each repeating unit. Less crystalline structure.<\/li>\n<li><strong>Nylon 66:<\/strong> Made from hexamethylenediamine and adipic acid, has two 6-carbon chains. More crystalline structure.<\/li>\n<\/ul>\n<h2>Mechanical Properties Comparison<\/h2>\n<table>\n<tr>\n<th>Eigentum<\/th>\n<th>PA6<\/th>\n<th>PA66<\/th>\n<\/tr>\n<tr>\n<td>Zugfestigkeit<\/td>\n<td>70-85 MPa<\/td>\n<td>80-100 MPa<\/td>\n<\/tr>\n<tr>\n<td>Biegemodus<\/td>\n<td>2.5-3.0 GPa<\/td>\n<td>2.8-3.5 GPa<\/td>\n<\/tr>\n<tr>\n<td>Dehnung beim Bruch<\/td>\n<td>30-100%<\/td>\n<td>15-60%<\/td>\n<\/tr>\n<tr>\n<td>Notched Izod Impact<\/td>\n<td>50-100 J\/m<\/td>\n<td>40-80 J\/m<\/td>\n<\/tr>\n<tr>\n<td>Schmelzpunkt<\/td>\n<td>220\u00b0C<\/td>\n<td>260\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>HDT at 1.8 MPa<\/td>\n<td>70\u00b0C<\/td>\n<td>90\u00b0C<\/td>\n<\/tr>\n<\/table>\n<h2>Feuchtigkeitsabsorption<\/h2>\n<p>Moisture absorption is critical for nylon applications:<\/p>\n<table>\n<tr>\n<th>Condition<\/th>\n<th>PA6<\/th>\n<th>PA66<\/th>\n<\/tr>\n<tr>\n<td>At 50% RH<\/td>\n<td>2.5-3.0%<\/td>\n<td>2.0-2.5%<\/td>\n<\/tr>\n<tr>\n<td>Saturation<\/td>\n<td>8-10%<\/td>\n<td>6-8%<\/td>\n<\/tr>\n<\/table>\n<h2>Processing Characteristics<\/h2>\n<h3>Nylon 6 Processing<\/h3>\n<ul>\n<li><strong>Melting Point:<\/strong> 220\u00b0C<\/li>\n<li><strong>Processing Range:<\/strong> 240-280\u00b0C<\/li>\n<li><strong>Mold Temperature:<\/strong> 40-80\u00b0C<\/li>\n<\/ul>\n<h3>Nylon 66 Processing<\/h3>\n<ul>\n<li><strong>Melting Point:<\/strong> 260\u00b0C<\/li>\n<li><strong>Processing Range:<\/strong> 280-320\u00b0C<\/li>\n<li><strong>Mold Temperature:<\/strong> 60-90\u00b0C<\/li>\n<\/ul>\n<h2>Applications by Material<\/h2>\n<h3>Nylon 6 Applications<\/h3>\n<ul>\n<li>Gears and sprockets<\/li>\n<li>Industrial monofilament<\/li>\n<li>Film and packaging<\/li>\n<li>Consumer products<\/li>\n<\/ul>\n<h3>Nylon 66 Applications<\/h3>\n<ul>\n<li>Automotive under-hood components<\/li>\n<li>Electrical connectors<\/li>\n<li>High-temperature bearings<\/li>\n<li>Precision mechanical components<\/li>\n<\/ul>\n<h2>Reinforced Grades<\/h2>\n<p>Both materials are commonly reinforced with glass fiber:<\/p>\n<table>\n<tr>\n<th>Klasse<\/th>\n<th>PA6 + GF30<\/th>\n<th>PA66 + GF30<\/th>\n<\/tr>\n<tr>\n<td>Zugfestigkeit<\/td>\n<td>140-160 MPa<\/td>\n<td>170-200 MPa<\/td>\n<\/tr>\n<tr>\n<td>HDT (1.8 MPa)<\/td>\n<td>205\u00b0C+<\/td>\n<td>250\u00b0C+<\/td>\n<\/tr>\n<tr>\n<td>Feuchtigkeitsabsorption<\/td>\n<td>1.0-1.5%<\/td>\n<td>0.8-1.2%<\/td>\n<\/tr>\n<\/table>\n<h2>Selection Summary<\/h2>\n<p><strong>Choose Nylon 6 when:<\/strong><\/p>\n<ul>\n<li>Impact resistance is critical<\/li>\n<li>Cost sensitivity is high<\/li>\n<li>Operating temperatures are moderate<\/li>\n<\/ul>\n<p><strong>Choose Nylon 66 when:<\/strong><\/p>\n<ul>\n<li>Higher mechanical strength is required<\/li>\n<li>Elevated temperatures are expected<\/li>\n<li>Dimensional stability is critical<\/li>\n<\/ul>\n<h2>Frequently Asked Questions<\/h2>\n<h3>Is Nylon 66 stronger than Nylon 6?<\/h3>\n<p>Yes. Nylon 66 typically offers 15-25% higher tensile strength due to more crystalline structure.<\/p>\n<h3>Which nylon is better for gears?<\/h3>\n<p>Both work well. PA6 is preferred for impact-loaded gears due to higher toughness. PA66 is better for high-load, high-temperature gear applications.<\/p>\n<h3>Where can I source quality PA6 and PA66?<\/h3>\n<p>Nylonplastic supplies both grades in natural, colored, and reinforced versions. 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Please try again.<\/span><\/p>\n\t\t\t\t\t\t<div data-block-id=\"7fa370fa\" class=\"wp-block-uagb-advanced-heading uagb-block uagb-block-7fa370fa 305\" >\n\t\t\t\t\t<h2 class=\"uagb-heading-text\">Entwerfen wir Ihre individuelle L\u00f6sung<\/h2>\t\t\t\t<\/div>\n\t\t\t\n\n\t\t\t<div data-block-id=\"bb2839a9\" class=\"srfm-block-single srfm-block srfm-input-block srf-input-bb2839a9-block  srfm-block-width-50 srfm-slug-text-field 305\" >\n\t\t\t\t\t\t\t\t<label id=\"srfm-label-bb2839a9-lbl-Rmlyc3QgTmFtZQ\" for=\"srfm-input-bb2839a9-lbl-Rmlyc3QgTmFtZQ\" class=\"srfm-block-label\">\n\t\t\t\t\t\tVorname\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"srfm-required\" aria-hidden=\"true\"> *<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"srfm-block-wrap\">\n\t\t\t\t<input class=\"srfm-input-common srfm-input-input\" type=\"text\" name=\"srfm-input-bb2839a9-lbl-Rmlyc3QgTmFtZQ-text-field\" 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class=\"srfm-block-wrap\">\n\t\t\t\t<input class=\"srfm-input-common srfm-input-input\" type=\"text\" name=\"srfm-input-dbaa04c6-lbl-TGFzdCBOYW1l-last-name\" id=\"srfm-input-dbaa04c6-lbl-TGFzdCBOYW1l\"\n\t\t\t\t\taria-describedby='srfm-error-dbaa04c6'\t\t\t\t\tdata-required=\"false\" aria-required=\"false\" data-unique=\"false\" maxlength=\"100\" value=\"\"  data-srfm-mask=\"none\"   \/>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"srfm-error-wrap\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"srfm-error-message\" data-srfm-id=\"srfm-error-dbaa04c6\" data-error-msg=\"This field is required.\" data-unique-msg=\"Value needs to be unique.\">\n\t\t\t\t\t\tThis field is required.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\n\n\t\t\t<div data-block-id=\"80af9bb9\" class=\"srfm-block-single srfm-block srfm-email-block srf-email-80af9bb9-block  srfm-block-width-50 srfm-slug-email 305 srfm-email-block-wrap\">\n\t\t\t\t<div class=\"srfm-email-block 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required.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\n\n\t\t<div data-block-id=\"0c6821ab\" class=\"srfm-block-single srfm-block srfm-phone-block srf-phone-0c6821ab-block srfm-block-width-50 305\">\n\t\t\t\t\t\t\t\t<label id=\"srfm-label-0c6821ab-lbl-UGhvbmUgTnVtYmVy\" for=\"srfm-phone-0c6821ab-lbl-UGhvbmUgTnVtYmVy\" class=\"srfm-block-label\">\n\t\t\t\t\t\tRufnummer\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"srfm-required\" aria-hidden=\"true\"> *<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"srfm-block-wrap\">\n\t\t\t\t<input type=\"tel\"\n\t\t\t\t\tclass=\"srfm-input-common 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class=\"srfm-block-label\">\n\t\t\t\t\t\tIhre Nachricht\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"srfm-required\" aria-hidden=\"true\"> *<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"srfm-block-wrap\">\n\t\t\t\t<textarea\n\t\t\t\t\tclass=\"srfm-input-common srfm-input-textarea\"\n\t\t\t\t\tname=\"srfm-textarea-fabb13d5-lbl-WW91ciBNZXNzYWdl-your-message\"\n\t\t\t\t\tid=\"srfm-textarea-fabb13d5-lbl-WW91ciBNZXNzYWdl-6110\"\n\t\t\t\t\taria-describedby='srfm-error-fabb13d5'\t\t\t\t\tdata-required=\"true\" aria-required=\"true\"  rows=\"4\"  \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t><\/textarea>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<div class=\"srfm-error-wrap\">\n\t\t\t\t\t\t\t\t\t<div class=\"srfm-error-message\" data-srfm-id=\"srfm-error-fabb13d5\" data-error-msg=\"This field is required.\">\n\t\t\t\t\t\tThis field is required.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<div class=\"srfm-submit-container\" style=\"\">\n\t\t\t\t\t\t<div style=\"width: ; text-align: left\" class=\"wp-block-button\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<button style=\"\" id=\"srfm-submit-btn\" class=\"srfm-btn-frontend srfm-button srfm-submit-button\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t<div class=\"srfm-submit-wrap\">\n\t\t\t\t\t\t\t\t\tEinreichen\t\t\t\t\t\t\t\t<div class=\"srfm-loader\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<p id=\"srfm-error-message\" class=\"srfm-common-error-message srfm-error-message srfm-footer-error\" hidden>\t\t<span class=\"srfm-icon\" aria-hidden=\"true\">\n\t\t\t<svg xmlns='http:\/\/www.w3.org\/2000\/svg' width='20' height='20' fill='none'><path d='M9.99935 18.3327C14.6017 18.3327 18.3327 14.6017 18.3327 9.99935C18.3327 5.39698 14.6017 1.66602 9.99935 1.66602C5.39698 1.66602 1.66602 5.39698 1.66602 9.99935C1.66602 14.6017 5.39698 18.3327 9.99935 18.3327Z' stroke='currentColor' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' \/><path d='M10 6.66602V9.99935' stroke='currentColor' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' \/><path d='M10 13.334H10.0083' stroke='currentColor' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' \/><\/svg>\t\t<\/span>\n\t\t<span class=\"srfm-error-content\">There was an error trying to submit your form. Please try again.<\/span><\/p>\n\t\t\t\t\t<input type=\"hidden\" name=\"trp-form-language\" value=\"de\"\/><\/form>\n\t\t\t<div class=\"srfm-single-form srfm-success-box in-page\">\n\t\t\t\t<div aria-live=\"polite\" aria-atomic=\"true\" role=\"alert\" id=\"srfm-success-message-page-305\" class=\"srfm-success-box-description\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Chemical Structure Differences The fundamental difference between PA6 (Nylon 6) and PA66 (Nylon 66) lies in their molecular structure: Nylon [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3950,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":{"facebook_846085238273622_899381133262461":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","site-sidebar-layout":"default","site-content-layout":"Nylon 6 vs Nylon 66 \u2014 Frequently Asked Questions","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"[[\"Is Nylon 66 stronger than Nylon 6?\",\"Yes. Nylon 66 typically offers 15-25% higher tensile strength (80-100 MPa vs 70-85 MPa) due to more crystalline structure.\"],[\"Which nylon is better for gears?\",\"Both work well. PA6 is preferred for impact-loaded gears due to higher toughness. PA66 is better for high-load, high-temperature applications.\"],[\"Where can I source quality PA6 and PA66 granules?\",\"Nylonplastic supplies both grades in natural, colored, and reinforced versions. Contact us for samples.\"]]","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[13],"tags":[],"class_list":["post-3911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nylon-plastic-granules"],"_links":{"self":[{"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/posts\/3911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/comments?post=3911"}],"version-history":[{"count":2,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/posts\/3911\/revisions"}],"predecessor-version":[{"id":3954,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/posts\/3911\/revisions\/3954"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/media\/3950"}],"wp:attachment":[{"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/media?parent=3911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/categories?post=3911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nylonplastic.com\/de\/wp-json\/wp\/v2\/tags?post=3911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}