PEI und PEEK sind die beiden Materialien, die f\u00fcr dieselbe Aufgabe am h\u00e4ufigsten in die engere Wahl kommen, und die Preisl\u00fccke ist gro\u00df \u2014 PEI kostet nach Gewicht etwa ein Drittel von PEEK. Diese L\u00fccke ist real, aber keine direkte Ersparnis, weil die beiden Polymere auf unterschiedliche Weise versagen.<\/p>\n\n
PEI ist die bessere Wahl f\u00fcr elektrische und strukturelle Teile, die dauerhaft unter 170 \u00b0C arbeiten und \u00fcberwiegend mechanischer und thermischer Belastung ausgesetzt sind. Isolatoren, Vorrichtungsplatten, Steckergeh\u00e4use, Strukturhalterungen. Es ist steif, formstabil und l\u00e4sst sich hervorragend bearbeiten. Es ist jedoch kerbempfindlich, daher sind scharfe Innenkanten und d\u00fcnne, schlagbeanspruchte W\u00e4nde zu vermeiden.<\/p>\n\n
PEEK \u00fcbernimmt, wo die Umgebung feindlich wird. Dauerbetrieb \u00fcber 200 \u00b0C, Dampf und hei\u00dfes Wasser, starke S\u00e4uren, wiederholte Sterilisationszyklen oder Langzeit-Eintauchen. PEEK ist zudem deutlich widerstandsf\u00e4higer gegen Spannungsrisse unter Last in Gegenwart von L\u00f6sungsmitteln. Die Faustregel: Sieht das Bauteil nur Hitze und Kraft, dann PEI. Sieht es Chemie, Dampf oder \u00fcber 200 \u00b0C, dann PEEK.<\/p>\n\n","protected":false},"excerpt":{"rendered":"
Beide laufen oberhalb von 170 \u00b0C. PEI kostet ein Drittel von PEEK. Hier erfahren Sie, wo PEI tats\u00e4chlich das bessere Bauteil ist und wo es still versagt.<\/p>\n","protected":false},"author":193679612,"featured_media":97,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"PEEK or PEI? The two workhorse high-temperature plastics compared on continuous use, cost, chemical resistance and machinability.","jetpack_seo_html_title":"PEEK or PEI: Choosing a High-Temp Plastic | Top Plastic","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[132592],"tags":[132586],"class_list":["post-96","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-material-guide","tag-material-guide"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pcp8Cz-1y","jetpack-related-posts":[{"id":92,"url":"https:\/\/cntopplastics.com\/de\/peek-vs-pom-cost\/","url_meta":{"origin":96,"position":0},"title":"PEEK gegen POM: Wann ist das teure Material tats\u00e4chlich g\u00fcnstiger?","author":"jessemei","date":"2026-10-08","format":false,"excerpt":"PEEK costs roughly 20 times more per kilogram than POM \u2014 yet on a part-cost basis it often wins. 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