{"id":3921,"date":"2026-04-22T06:17:53","date_gmt":"2026-04-22T06:17:53","guid":{"rendered":"https:\/\/nylonplastic.com\/peek-vs-pei-high-temperature-engineering-plastics\/"},"modified":"2026-06-02T00:46:08","modified_gmt":"2026-06-02T00:46:08","slug":"peek-vs-pei-high-temperature-engineering-plastics","status":"publish","type":"post","link":"https:\/\/nylonplastic.com\/ko\/peek-vs-pei-high-temperature-engineering-plastics\/","title":{"rendered":"PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/nylonplastic.com\/wp-content\/uploads\/2026\/04\/peek-vs-pei-high-temperature-engineering-plastics-intro.jpg\" alt=\"PEEK vs PEI illustration 1\" title=\"PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared\"><\/figure>\n<figure style=\"margin:2rem 0;text-align:center;\"><img decoding=\"async\" src=\"https:\/\/nylonplastic.com\/wp-content\/uploads\/2026\/06\/bb-3921-1.webp\" alt=\"PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared\" loading=\"lazy\" style=\"width:100%;max-width:800px;height:auto;border-radius:8px;\" title=\"PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared\"><figcaption style=\"font-size:0.9em;color:#666;margin-top:0.5rem;\">PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared<\/figcaption><\/figure>\n<figure style=\"margin:2rem 0;text-align:center;\"><img decoding=\"async\" src=\"https:\/\/nylonplastic.com\/wp-content\/uploads\/2026\/06\/bb-3921-0.webp\" alt=\"PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared\" loading=\"lazy\" style=\"width:100%;max-width:800px;height:auto;border-radius:8px;\" title=\"PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared\"><figcaption style=\"font-size:0.9em;color:#666;margin-top:0.5rem;\">PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared<\/figcaption><\/figure>\n<h2>High-Temperature Performance<\/h2>\n<p><strong>PEEK<\/strong> \uadf8\ub9ac\uace0 <strong>PEI(\uc6b8\ud15c)<\/strong> are leading high-temperature engineering plastics.<\/p>\n<h2>Key Differences<\/h2>\n<table>\n<tr>\n<th>\uc18d\uc131<\/th>\n<th>PEEK<\/th>\n<th>PEI<\/th>\n<\/tr>\n<tr>\n<td>Continuous Use Temp<\/td>\n<td>250\u00b0C<\/td>\n<td>170\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>\ub0b4\ud654\ud559\uc131<\/td>\n<td>\uc6b0\uc218<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td>\ube44\uc6a9<\/td>\n<td>$150-300\/kg<\/td>\n<td>$30-60\/kg<\/td>\n<\/tr>\n<\/table>\n<div class=\"np-faq-section\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\">\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<details itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">When is PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared a good option?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared is a good option when fast iteration, complex geometry, low tooling cost, or low-volume production is more important than molded-part unit cost.<\/p>\n<\/div>\n<\/details>\n<details itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">What should be checked before choosing PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">\ubd80\ud488 \ud06c\uae30, \uc7ac\ub8cc \ud2b9\uc131, \ud45c\uba74 \ub9c8\uac10, \uce58\uc218 \uacf5\ucc28, \uc5f4 \ub178\ucd9c, \ud558\uc911 \ubc29\ud5a5, \ud6c4\ucc98\ub9ac\uac00 \ud544\uc694\ud55c\uc9c0 \uc5ec\ubd80\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n<\/details>\n<details itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">How does PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared compare with CNC machining?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">3D \ud504\ub9b0\ud305\uc740 \ubcf5\uc7a1\ud55c \ud615\uc0c1\uc744 \ube60\ub974\uac8c \uc81c\uc791\ud560 \uc218 \uc788\ub294 \ubc18\uba74, CNC \uac00\uacf5\uc740 \uc815\ubc00\ud55c \ud45c\uba74, \uc5c4\uaca9\ud55c \uacf5\ucc28 \ubc0f \uc0dd\uc0b0 \ub4f1\uae09 \uc7ac\ub8cc\uc5d0 \ub354 \uc801\ud569\ud55c \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n<\/div>\n<\/details>\n<details itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n<summary itemprop=\"name\">What affects the cost of PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n<p itemprop=\"text\">\ube44\uc6a9\uc740 \uc7ac\ub8cc, \ube4c\ub4dc \ubcfc\ub968, \ud504\ub9b0\ud2b8 \uc2dc\uac04, \ub808\uc774\uc5b4 \ub192\uc774, \uc11c\ud3ec\ud2b8 \uc81c\uac70, \ub9c8\uac10, \uac80\uc0ac \ubc0f \ube4c\ub4dc \ub0b4 \ubd80\ud488 \uc218\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n<\/div>\n<\/details>\n<\/div>\n\t\t\t<div class=\"srfm-form-container srfm-form-container-305 srfm-bg-color\">\n\t\t\t<style>\n\t\t\t\t\/* Need to check and remove the input variables related to the Style Tab. *\/\n\t\t\t\t.srfm-form-container-305 {\n\t\t\t\t\t\/* New test variables *\/\n\t\t\t\t\t--srfm-color-scheme-primary: var(--ast-global-color-0);\n\t\t\t\t\t--srfm-color-scheme-text-on-primary: var(--ast-global-color-2);\n\t\t\t\t\t--srfm-color-scheme-text: var(--ast-global-color-2);\n\t\t\t\t\t--srfm-quill-editor-color: var(--ast-global-color-0);\n\n\t\t\t\t\t--srfm-color-input-label: var(--ast-global-color-2);\n\t\t\t\t\t--srfm-color-input-description: hsl( from 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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\t\uc774 \ud544\ub4dc\ub294 \ud544\uc218 \uc785\ub825 \uc0ac\ud56d\uc785\ub2c8\ub2e4.\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 srfm-email-block-wrap\">\n\t\t\t\t<div class=\"srfm-email-block srf-email-80af9bb9-block\">\n\t\t\t\t\t\t\t\t\t\t<label id=\"srfm-label-80af9bb9-lbl-RW1haWw\" for=\"srfm-email-80af9bb9-lbl-RW1haWw\" class=\"srfm-block-label\">\n\t\t\t\t\t\t\uc774\uba54\uc77c\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\t\t\t<div class=\"srfm-block-wrap\">\n\t\t\t\t\t\t<input class=\"srfm-input-common srfm-input-email\" type=\"email\" name=\"srfm-email-80af9bb9-lbl-RW1haWw-email\" id=\"srfm-email-80af9bb9-lbl-RW1haWw\"\n\t\t\t\t\t\taria-describedby='srfm-error-80af9bb9'\t\t\t\t\t\tdata-required=\"true\" aria-required=\"true\" data-unique=\"false\" value=\"\"   \/>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"srfm-error-wrap\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"srfm-error-message\" data-srfm-id=\"srfm-error-80af9bb9\" data-error-msg=\"This field is required.\" data-unique-msg=\"Value needs to be unique.\">\n\t\t\t\t\t\t\uc774 \ud544\ub4dc\ub294 \ud544\uc218 \uc785\ub825 \uc0ac\ud56d\uc785\ub2c8\ub2e4.\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\">\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\t\uc804\ud654 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\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\t\uc774 \ud544\ub4dc\ub294 \ud544\uc218 \uc785\ub825 \uc0ac\ud56d\uc785\ub2c8\ub2e4.\t\t\t\t\t<\/div>\n\t\t\t\t\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\t\uc81c\ucd9c\ud558\uae30\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\">\uc591\uc2dd\uc744 \uc81c\ucd9c\ud558\ub294 \ub3d9\uc548 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\uc2b5\ub2c8\ub2e4. \ub2e4\uc2dc \uc2dc\ub3c4\ud574 \uc8fc\uc138\uc694.<\/span><\/p>\n\t\t\t\t\t<input type=\"hidden\" name=\"trp-form-language\" value=\"ko\"\/><\/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>","protected":false},"excerpt":{"rendered":"<p>Practical guide to PEEK vs PEI \u2014 High-Temperature Engineering Plastics Compared: understand key decisions around peek, pei, high, compare options, and reduce sourcing or design mistakes before production.<\/p>","protected":false},"author":1,"featured_media":3974,"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":"PEEK vs PEI \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 PEEK stronger than PEI?\",\"At room temperature, PEI has higher tensile strength. PEEK maintains properties better at elevated temperatures.\"],[\"Where can I source PEEK and PEI materials?\",\"Nylonplastic supplies both materials in rod, sheet, and tube forms.\"]]","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":[74],"tags":[],"class_list":["post-3921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3d-printing-service"],"_links":{"self":[{"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/posts\/3921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/comments?post=3921"}],"version-history":[{"count":0,"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/posts\/3921\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/media\/3974"}],"wp:attachment":[{"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/media?parent=3921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/categories?post=3921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nylonplastic.com\/ko\/wp-json\/wp\/v2\/tags?post=3921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}