{"id":13004,"date":"2026-01-29T06:12:59","date_gmt":"2026-01-29T06:12:59","guid":{"rendered":"https:\/\/qilusteelgroup.com\/?p=13004"},"modified":"2026-06-05T09:46:06","modified_gmt":"2026-06-05T09:46:06","slug":"swrch35k-steel-complete-guide","status":"publish","type":"post","link":"https:\/\/qilusteelgroup.com\/ru\/swrch35k-steel-complete-guide\/","title":{"rendered":"SWRCH35K Steel: \u041f\u043e\u043b\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u043c, \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u043c \u0438 \u043a\u043b\u0430\u0441\u0441\u0430\u043c"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#1-what-is-swrch35k-steel\">1.What is SWRCH35K Steel?<\/a><\/li><li><a href=\"#2-classification-of-swrch35k-steel\">2.Classification of SWRCH35K Steel<\/a><\/li><li><a href=\"#3-advantages-of-swrch35k-steel\">3.Advantages of SWRCH35K Steel<\/a><\/li><li><a href=\"#4-limitations\">4.Limitations<\/a><\/li><li><a href=\"#5-swrch35k-steel-application-scenarios\">5.SWRCH35K Steel Application Scenarios<\/a><\/li><li><a href=\"#conclusion\">\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/a><\/li><li><a href=\"#7-faq\">7.FAQ<\/a><ul><li><a href=\"#faq-question-1769665753085\">Is SWRCH35K bare material prone to rusting?<\/a><\/li><li><a href=\"#faq-question-1769665771990\">Is SWRCH35K suitable for high-temperature or extremely low-temperature applications?<\/a><\/li><li><a href=\"#faq-question-1769665781445\">What are the main product forms of SWRCH35K?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-what-is-swrch35k-steel\">1.What is <a href=\"https:\/\/qilusteelgroup.com\/ru\/carbon-steel\/\" data-type=\"link\" data-id=\"https:\/\/qilusteelgroup.com\/carbon-steel\/\">SWRCH35K Steel<\/a>?<\/h2>\n\n\n\n<p>SWRCH35K is a medium-carbon,cold heading quality carbon steel wire rod specified by the Japanese JIS standard(JIS G3507-1).It is primarily used in cold working processes such as cold heading and cold extrusion to manufacture high-strength fasteners and precision structural components,and is widely applied in mechanical,automotive,and other related industries.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-classification-of-swrch35k-steel\">2.Classification of SWRCH35K Steel<\/h2>\n\n\n\n<p><strong>Product Form:<\/strong>Mainly available as coiled wire rods(suitable for automated cold heading) and small batches of straight bars(suitable for manual or non-standard processing).<\/p>\n\n\n\n<p><strong>Process State:<\/strong>Annealed state(excellent plasticity,resistant to cracking during cold heading,the mainstream in the market) and hot-rolled state(higher hardness,lower plasticity,requiring secondary annealing).<\/p>\n\n\n\n<p><strong>Performance Grade:<\/strong>Primarily achieves Grade 8.8 after heat treatment,with some high-quality products capable of reaching Grade 10.9.<\/p>\n\n\n\n<p><strong>Customized Types:<\/strong>Includes environmentally friendly low-phosphorus and low-sulfur variants,high-precision controlled-rolled types,and delayed fracture-resistant types tyo meet the demands of high-end industries.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-advantages-of-swrch35k-steel\">3.Advantages of SWRCH35K Steel<\/h2>\n\n\n\n<p>Excellent cold heading formability with low risk of cracking,making it suitable for processing complex components.<\/p>\n\n\n\n<p>Balanced strength and toughness,meeting the requirements for Grade 8.8 and partially Grade 10.9 fasteners.<\/p>\n\n\n\n<p>Low cost and high material utilization,offering outstanding cost-effectiveness.<\/p>\n\n\n\n<p>Produced using killed steel process,ensuring stable quality and easier compliance with industry certifications.<\/p>\n\n\n\n<p>Customizable forms such as coiled wire rods or straight bars to adapt to different production needs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-limitations\">4.Limitations<\/h2>\n\n\n\n<p>Low maximum strength,unable to meet the requirements for Grade 12.9 and higher fasteners.<\/p>\n\n\n\n<p>The bare material is prone to rusting and requires additional anti-corrosion treatment.<\/p>\n\n\n\n<p>Unsuitable for high-temperature,heavy-load,or critical components applications.<\/p>\n\n\n\n<p>Hot-rolled state cannot be used directly for cold heading.Annealing is required and it causes significant die wear.<\/p>\n\n\n\n<p>Poor low-temperature toughness,prone to brittle fracture in extremely cold environments.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-swrch35k-steel-application-scenarios\">5.SWRCH35K Steel Application Scenarios<\/h2>\n\n\n\n<p><strong>Automotive Manufacturing:<\/strong>Engine bolts,chassis connectors,fastening,screws<\/p>\n\n\n\n<p>for new energy battery packs,spring seats,and other medium-load components.<\/p>\n\n\n\n<p><strong>Fastener Production:<\/strong>Primarily Grade 8.8 standard bolts,nuts,rivets,and pins,also applicable for some non-critical Grade 10.9 fasteners.<\/p>\n\n\n\n<p><strong>Electronics and Precision Instruments:<\/strong>Micro screws,precision instrument rivets,connector pins,and other small precision parts.<\/p>\n\n\n\n<p><strong>General Machinery and Agricultural Equipment:<\/strong>Bearing housing,couplings,<\/p>\n\n\n\n<p>agricultural machinery parts,and structural connectors for general equipment.<\/p>\n\n\n\n<p><strong>Home Appliance and Furniture Hardware:<\/strong>Self-tapping screws for washing machine\/air conditioner casings,furniture assembly bolts,hinge pins,and similar components.<\/p>\n\n\n\n<div class=\"wp-block-greenshift-blocks-container gspb_container gspb_container-gsbp-1a65cfc\" id=\"gspb_container-id-gsbp-1a65cfc\">\n<div class=\"wp-block-greenshift-blocks-container gspb_container gspb_container-gsbp-e854de4\" id=\"gspb_container-id-gsbp-e854de4\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/chassis.jpg\" alt=\"\" class=\"wp-image-13009\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/chassis.jpg 1000w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/chassis-300x200.jpg 300w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/chassis-768x512.jpg 768w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/chassis-18x12.jpg 18w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/chassis-500x334.jpg 500w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-container gspb_container gspb_container-gsbp-751f61d\" id=\"gspb_container-id-gsbp-751f61d\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"493\" src=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/valve-stem-nut.avif\" alt=\"\" class=\"wp-image-13010\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/valve-stem-nut.avif 740w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/valve-stem-nut-300x200.jpg 300w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/valve-stem-nut-18x12.jpg 18w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/valve-stem-nut-500x333.jpg 500w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-container gspb_container gspb_container-gsbp-d530b6b\" id=\"gspb_container-id-gsbp-d530b6b\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"528\" src=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/Air-conditioning-housing.avif\" alt=\"\" class=\"wp-image-13011\" style=\"width:366px;height:auto\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/Air-conditioning-housing.avif 740w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/Air-conditioning-housing-300x214.jpg 300w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/Air-conditioning-housing-18x12.jpg 18w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/01\/Air-conditioning-housing-500x357.jpg 500w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h2>\n\n\n\n<p>SWRCH35K is a medium-carbon cold heading quality killed steel defined b=y the JIS standard.It is characterized by excellent cold workability and a balances combination of strength and toughness.In its annealed state,its hardness typically ranges from 72-85HRB.After heat treatment,it can reliably achieve Grade 8.8 strength,with some variants reaching Grade 10.9.<\/p>\n\n\n\n<p>The material is primarily supplied in two forms\uff1aCoiled wire rods(mainstream,suitable for automated cold heading) and straight bars(for small-batch manual processing).It is also classified by its processing state:annealed(good plasticity,low cracking tendency) and hot-rolled(requires secondary processing).Customized versions,such as low- phosphorus and low-sulfur grades,are also available.<\/p>\n\n\n\n<p>Its primary application is in <a href=\"https:\/\/www.kissself.com\/privacy-policy\" data-type=\"link\" data-id=\"https:\/\/www.kissself.com\/privacy-policy\" target=\"_blank\" rel=\"noopener\">manufacturing<\/a> medium-to high-fasteners for the automotive,machinery,and electronics industries,including components like engine bolts and precision rivets.Key advantages include superior formability,high cost-effectiveness,and consistent quality.Its main limitations are a relatively low maximum strength,susceptibility to rust in its bare state,and unsuitability for high-temperature,heavy-load,or extremely low-temperature operating conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"7-faq\">7.FAQ<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1769665753085\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\"><strong>Is SWRCH35K bare material prone to rusting?<\/strong><\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes,it is prone to rusting.As it contains no rust&#8211;resistance alloying elements,surface treatments such as zinc plating or zinc diffusion coating are required for use in outdoor or humid environments.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1769665771990\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\"><strong>Is SWRCH35K suitable for high-temperature or extremely low-temperature applications?<\/strong><\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Nor recommended.It\u2019s strength degrades rapidly under high temperatures,while its toughness decreases in low-temperature environments,making it prone to brittle fracture.It is only suitable for moderate-load applications under normal temperature conditions.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1769665781445\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\"><strong>What are the main product forms of SWRCH35K?<\/strong><\/h3>\n<div class=\"rank-math-answer\">\n\n<p>The primary form is coiled wire rods with diameters ranging from 5.5 to 22mm,which are suitable for large-scale cold heading production.Additionally,straight bars with lengths of 3 to 6 meters are available,catering to small-batch or non-standard processing needs.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>1.What is SWRCH35K Steel? SWRCH35K is a medium-carbon,cold heading quality carbon steel wire rod specified by the Japanese JIS standard(JIS G3507-1).It is primarily used in cold working processes such as cold heading and cold extrusion to manufacture high-strength fasteners and precision structural components,and is widely applied in mechanical,automotive,and other related industries. 2.Classification of SWRCH35K Steel [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13006,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":".gspb_container-id-gsbp-1a65cfc,.gspb_container-id-gsbp-751f61d,.gspb_container-id-gsbp-d530b6b,.gspb_container-id-gsbp-e854de4{flex-direction:column;box-sizing:border-box}#gspb_container-id-gsbp-1a65cfc.gspb_container>p:last-of-type,#gspb_container-id-gsbp-751f61d.gspb_container>p:last-of-type,#gspb_container-id-gsbp-d530b6b.gspb_container>p:last-of-type,#gspb_container-id-gsbp-e854de4.gspb_container>p:last-of-type{margin-bottom:0}#gspb_container-id-gsbp-1a65cfc.gspb_container{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));row-gap:20px;column-gap:20px}@media (max-width:575.98px){#gspb_container-id-gsbp-1a65cfc.gspb_container{grid-template-columns:repeat(1,minmax(0,1fr))}}#gspb_container-id-gsbp-1a65cfc.gspb_container{box-sizing:border-box}#gspb_container-id-gsbp-751f61d.gspb_container,#gspb_container-id-gsbp-d530b6b.gspb_container,#gspb_container-id-gsbp-e854de4.gspb_container{position:relative;box-sizing:border-box}","footnotes":""},"categories":[33],"tags":[],"class_list":["post-13004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-carbon-steel"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/posts\/13004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/comments?post=13004"}],"version-history":[{"count":5,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/posts\/13004\/revisions"}],"predecessor-version":[{"id":13635,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/posts\/13004\/revisions\/13635"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/media\/13006"}],"wp:attachment":[{"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/media?parent=13004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/categories?post=13004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/ru\/wp-json\/wp\/v2\/tags?post=13004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}