{"id":4061,"date":"2026-08-03T14:43:18","date_gmt":"2026-08-03T06:43:18","guid":{"rendered":"https:\/\/jblstainless.com\/?post_type=product&#038;p=4061"},"modified":"2026-08-03T14:43:19","modified_gmt":"2026-08-03T06:43:19","slug":"q1300-q1300c-q1300d-q1300e-s1300ql-high-strength-steel-plate","status":"publish","type":"product","link":"https:\/\/jblstainless.com\/kk\/q1300-q1300c-q1300d-q1300e-s1300ql-high-strength-steel-plate\/","title":{"rendered":"Q1300  Q1300C Q1300D Q1300E  S1300QL High Strength Steel Plate"},"content":{"rendered":"\t\t<div data-elementor-type=\"product-post\" data-elementor-id=\"4061\" class=\"elementor elementor-4061\" data-elementor-post-type=\"product\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a8c972f e-flex e-con-boxed e-con e-parent\" data-id=\"a8c972f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0097929 elementor-widget elementor-widget-text-editor\" data-id=\"0097929\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Q1300 Q1300C Q1300D Q1300E S1300QL High Strength Steel Plate&#8221;This batch of products will be supplied to Sany Heavy Industry for use in the booms of large-tonnage cranes. Eventually, they will be exported to the <strong><span style=\"color: #008000;\">European and American markets<\/span><\/strong>. The customers have given very positive feedback,&#8221; said Wang Jiming, the project manager of the steel for construction machinery.<\/p><p>In 2021, the steel market was booming, and the profits of ordinary building materials steel were even higher. However, we predicted that the trend of industry lightweighting and high-endization would be irreversible. Based on strategic considerations for reserves, JBL completed the R&amp;D preparation for Q1300E that year, just waiting for the commercial application opportunity. This became a crucial step for the company to implement its strategy of &#8220;high-endization of quality and brand&#8221;. Nowadays,<strong> <span style=\"color: #008000;\">JBL<\/span><\/strong> has seen significant growth in high-end steel fields such as <strong><span style=\"color: #008000;\">high-strength<\/span> <\/strong>and<strong><span style=\"color: #008000;\"> low-temperature toughness<\/span><\/strong>, achieving a leap from &#8220;lagging behind&#8221; to &#8220;keeping pace&#8221; and even &#8220;leading the way&#8221;.<\/p><p>Currently, the lightweighting and greening of construction machinery have become industry trends. The research and development of advanced steel materials is providing a solid foundation for the upgrading and substitution of equipment materials and the lightweighting of products<strong><span style=\"color: #008000;\"> &#8211; higher-strength steel<\/span> <\/strong>means <strong><span style=\"color: #008000;\">&#8220;reducing material usage<\/span> <\/strong>while maintaining the same load-bearing capacity&#8221;, which can not only reduce costs but also <strong><span style=\"color: #008000;\">lower energy<\/span><\/strong> consumption, aligning with the direction of green manufacturing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-de0f3f0 e-flex e-con-boxed e-con e-parent\" data-id=\"de0f3f0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1943f73 e-con-full e-flex e-con e-child\" data-id=\"1943f73\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-078f1e9 elementor-widget elementor-widget-image\" data-id=\"078f1e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"700\" height=\"448\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-Carbon-steel-sheet-plate.png\" class=\"attachment-large size-large wp-image-4064\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-Carbon-steel-sheet-plate.png 700w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-Carbon-steel-sheet-plate-18x12.png 18w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-Carbon-steel-sheet-plate-600x384.png 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bd6b043 e-con-full e-flex e-con e-child\" data-id=\"bd6b043\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cfb48b6 elementor-widget elementor-widget-text-editor\" data-id=\"cfb48b6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #008000;\">Q1300 MPa-grade steel plates&#8212;-characteristic<\/span><\/strong><\/p><ul><li><strong>Ultra-high strength\u00a0<\/strong><\/li><li><strong> Excellent toughness\u00a0<\/strong><\/li><li><strong> Delivery in tempered state\u00a0<\/strong><\/li><\/ul><p>\u00a0<\/p><ul><li><strong> Welding challenges and controllability<\/strong>: The higher carbon content leads to a significant tendency towards hardening, requiring strict preheating (typically above 150\u2103) and the use of ultra-low hydrogen welding materials to prevent cold cracking. However, reliable connections can be achieved through process control.<\/li><li><strong>Processing limitations:<\/strong> High hardness results in the need for high energy input for cutting (recommended laser\/plasma or water jet), a bending radius that is larger than that of ordinary steel to avoid degradation of the performance in the heat affected zone.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dfe1ada e-flex e-con-boxed e-con e-parent\" data-id=\"dfe1ada\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-84317fd elementor-widget elementor-widget-text-editor\" data-id=\"84317fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 style=\"text-align: center;\"><span style=\"color: #008000;\"><strong>Differences between the Q1300 high-strength plate grades<\/strong><\/span><\/h3><h3>Comparison of Core differences of Q1300 series grades<\/h3><table><thead><tr><th align=\"left\">&#8220;Comparison dimension&#8221;<\/th><th align=\"left\">Q1300D<\/th><th align=\"left\">Q1300E<\/th><th align=\"left\">explain<\/th><\/tr><\/thead><tbody><tr><td align=\"left\">\u200c&#8221;Comparison dimension&#8221;\u200c<\/td><td align=\"left\">\u22651300 MPa<\/td><td align=\"left\">\u22651300 MPa<\/td><td align=\"left\">The two are the same. The number after &#8220;Q&#8221; represents this value<\/td><\/tr><tr><td align=\"left\">\u200cTensile strength range\u200c<\/td><td align=\"left\">1350\uff5e1700 MPa<\/td><td align=\"left\">1350\uff5e1700 MPa<\/td><td align=\"left\">The two are the same.<\/td><\/tr><tr><td align=\"left\">Meaning of quality grade\u200c<\/td><td align=\"left\">Grade D<\/td><td align=\"left\">Grade E<\/td><td align=\"left\">The key to distinction lies in the requirement of low-temperature toughness<\/td><\/tr><tr><td align=\"left\">\u200cMeaning of quality grade\u200c<\/td><td align=\"left\">\u200c<strong>-20\u2103<\/strong>\u200c<\/td><td align=\"left\">\u200c<strong>-40\u2103<\/strong>\u200c<\/td><td align=\"left\">\u200cCore difference \u200c : E-class has better low-temperature resistance<\/td><\/tr><tr><td align=\"left\">\u200cShock absorption energy\u200c<\/td><td align=\"left\">\u226527 J (longitudinal)<\/td><td align=\"left\">\u226527 J (longitudinal)<\/td><td align=\"left\">The standard values are the same, but the test environment temperatures are different<\/td><\/tr><tr><td align=\"left\">\u200cShock absorption energy\u200c<\/td><td align=\"left\">Quenching + tempering (quenching and tempering)<\/td><td align=\"left\">Quenching + tempering (quenching and tempering)<\/td><td align=\"left\">All need to undergo heat treatment processes<\/td><\/tr><tr><td align=\"left\">\u200ctypical application scenarios\u200c<\/td><td align=\"left\">typical application scenarios<\/td><td align=\"left\">Extremely cold regions, deep-sea equipment, and key structures with high seismic resistance<\/td><td align=\"left\">Class E is suitable for more demanding requirements<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-90485b8 e-flex e-con-boxed e-con e-parent\" data-id=\"90485b8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3d67146 e-con-full e-flex e-con e-child\" data-id=\"3d67146\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b15df14 elementor-widget elementor-widget-text-editor\" data-id=\"b15df14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #008000;\">Q1300 High Strength Steel Sheet&#8212;-Main chemical component range<\/span><\/strong><\/p><ul><li>\u200c<strong>\u00a0(C)<\/strong>\u200c\uff1a\u2264 0.20<\/li><li>\u200c<strong>\u00a0(Si)<\/strong>\u200c\uff1a\u2264 0.80<\/li><li>\u200c<strong>\u00a0(Mn)<\/strong>\u200c\uff1a\u2264 1.60<\/li><li>\u200c<strong>\u00a0(P)<\/strong>\u200c\uff1a\u2264 0.020<\/li><li>\u200c<strong>\u00a0(S)<\/strong>\u200c\uff1a\u2264 0.010<\/li><li>\u200c<strong>\u00a0(Ni)<\/strong>\u200c\uff1a\u2264 4.00<\/li><li>\u200c<strong>\u00a0(Cr)<\/strong>\u200c\uff1a\u2264 1.60<\/li><li>\u200c<strong>\u00a0(Mo)<\/strong>\u200c\uff1a\u2264 0.70<\/li><li>\u200c<strong>\u00a0(Nb)<\/strong>\u200c\uff1a\u2264 0.08<\/li><li>\u200c<strong>\u00a0(V)<\/strong>\u200c\uff1a\u2264 0.14<\/li><li>\u200c<strong>\u00a0(B)<\/strong>\u200c\uff1a\u2264 0.006<\/li><li>\u200c<strong>\u00a0(Al)<\/strong>\u200c\uff1a\u22650.015 (acid-soluble aluminum) or Als\u22650.015<\/li><li>\u200c<strong>\u00a0(Cu)<\/strong>\u200c\uff1aResidual \u22640.30; if added as an alloying element, \u22640.80<\/li><li>\u200c<strong>\u00a0(As)<\/strong>\u200c\uff1a\u2264 0.08<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-613939e e-con-full e-flex e-con e-child\" data-id=\"613939e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fbcea6a elementor-widget elementor-widget-spacer\" data-id=\"fbcea6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5849623 elementor-widget elementor-widget-image\" data-id=\"5849623\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"700\" height=\"393\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/S1300QL-High-Strength-Steel-Plates.png\" class=\"attachment-large size-large wp-image-4076\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/S1300QL-High-Strength-Steel-Plates.png 700w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/S1300QL-High-Strength-Steel-Plates-18x10.png 18w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/S1300QL-High-Strength-Steel-Plates-600x337.png 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-207a362 e-flex e-con-boxed e-con e-parent\" data-id=\"207a362\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-94280e6 e-con-full e-flex e-con e-child\" data-id=\"94280e6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-859e29a elementor-widget elementor-widget-image\" data-id=\"859e29a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"700\" height=\"466\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Yield-strength-600-1300-MPa-High-Strength-Steel-Grades-S1300QL-Q1300.png\" class=\"attachment-large size-large wp-image-4077\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Yield-strength-600-1300-MPa-High-Strength-Steel-Grades-S1300QL-Q1300.png 700w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Yield-strength-600-1300-MPa-High-Strength-Steel-Grades-S1300QL-Q1300-18x12.png 18w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Yield-strength-600-1300-MPa-High-Strength-Steel-Grades-S1300QL-Q1300-600x399.png 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4712166 e-con-full e-flex e-con e-child\" data-id=\"4712166\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d361142 elementor-widget elementor-widget-text-editor\" data-id=\"d361142\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p><strong><span style=\"color: #008000;\">Q1300 High-strength Plate &#8211; Main Properties<\/span><\/strong><\/p><ul><li><strong>\u200cYield strength\u200c:<\/strong> \u2265 1300 MPa<\/li><li><strong>Tensile strength\u200c:<\/strong> 1350 &#8211; 1700 MPa<\/li><li><strong>Post-rupture elongation rate\u200c:<\/strong> \u2265 8%<\/li><li><strong>\u200cImpact toughness\u200c:<\/strong> Depending on the quality grade, -20\u2103 (Grade D) or -40\u2103 (Grade E) impact energy \u2265 27 J<\/li><li><strong>Delivery condition\u200c:<\/strong> Quenched + Tempered (tempered state)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-405a34d e-flex e-con-boxed e-con e-parent\" data-id=\"405a34d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-c746bef e-con-full e-flex e-con e-child\" data-id=\"c746bef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f2da22f elementor-widget elementor-widget-text-editor\" data-id=\"f2da22f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #008000;\">Q1300 &#8212;- Corresponding foreign brand name<\/span><\/strong><\/p><ul><li>China: Q1300D\/E<\/li><li><strong>Germany\/Europe similar benchmark:<\/strong> S1350, Quend 1100\/1200 Hardox 550\/600,<\/li><li><strong>European standard:<\/strong> S690\/S890\/S960, The 1300 grade is a special customization, usually referred to as 1300MPa grade quenched and tempered structural steel.<\/li><li><strong>USA benchmark:<\/strong> Similar to the high-strength structural steel of the ASTM A514\/A517 series (usually yield 690-825MPa, higher requires customization), or military\/special standards such as MIL-S-24645, ultra-high strength level; In engineering, it is often referred to as the strengthened variant of T-1 steel (A514) or HY-130 (navy use, yield approximately 1300MPa, but composition and process are different).<\/li><li><strong>Japan benchmark:<\/strong> JIS G 3106\/3127 series, the highest regular is SM570\/SM690, the 1300 grade is a special research and development, there is no direct standard brand, technical benchmark is JFE-EH1100 above customized level or NSC series ultra-high strength structural steel.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-17e94c8 e-con-full e-flex e-con e-child\" data-id=\"17e94c8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20df688 elementor-widget elementor-widget-spacer\" data-id=\"20df688\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c02e47c elementor-widget elementor-widget-image\" data-id=\"c02e47c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"391\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Machinery-Steel-Plate.png\" class=\"attachment-large size-large wp-image-4071\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Machinery-Steel-Plate.png 700w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Machinery-Steel-Plate-18x10.png 18w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Machinery-Steel-Plate-600x335.png 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-97ec5b5 e-flex e-con-boxed e-con e-parent\" data-id=\"97ec5b5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-cf27820 e-con-full e-flex e-con e-child\" data-id=\"cf27820\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-830ba34 elementor-widget elementor-widget-spacer\" data-id=\"830ba34\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b55a9c7 elementor-widget elementor-widget-image\" data-id=\"b55a9c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"559\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery-1024x715.png\" class=\"attachment-large size-large wp-image-4073\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery-1024x715.png 1024w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery-700x489.png 700w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery-768x537.png 768w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery-18x12.png 18w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery-600x419.png 600w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Strength-Steel-For-Construction-Machinery.png 1417w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a8a310f e-con-full e-flex e-con e-child\" data-id=\"a8a310f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-73f347c elementor-widget elementor-widget-text-editor\" data-id=\"73f347c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #008000;\">Q1300 High Strength Machinery Steel Plate&#8212;-Main Applications<\/span><\/strong><\/p><ul><li><strong>Super-sized lifting equipment:<\/strong> Lifting booms, turntables and load main beams of large-tonnage truck cranes and crawler cranes, replacing traditional low-strength steel to achieve significant weight reduction and enhance lifting capacity.<\/li><li><strong>Mining and excavation machinery:<\/strong> World&#8217;s largest electric mining shovels, giant excavators and loaders&#8217; bucket seat, boom, frame and load-bearing structure, suitable for high-impact and heavy-load working conditions.<\/li><li><strong>Coal mine support equipment:<\/strong> Hydraulic support columns and key load-bearing components, requiring both extremely high strength and impact resistance.<\/li><li><strong>Special engineering vehicles:<\/strong> Electric wheel dump trucks, heavy bulldozers and drilling rigs&#8217; chassis and main beams, optimizing structural weight and enhancing payload.<\/li><li><strong>Some high-end alternative scenarios:<\/strong> In specific load-bearing structures, can replace aluminum alloys or titanium alloys for special components that are sensitive to weight and require high strength.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9815eed e-flex e-con-boxed e-con e-parent\" data-id=\"9815eed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-88e9728 e-con-full e-flex e-con e-child\" data-id=\"88e9728\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e195beb elementor-widget elementor-widget-text-editor\" data-id=\"e195beb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #008000;\">Q1300 &#8211; Production Process<\/span><\/strong><\/p><p style=\"text-align: center;\">hot metal pretreatment<br \/>\u2193<br \/>converter steelmaking<br \/>\u2193<br \/>LF Refining<br \/>\u2193<br \/>VD vacuum treatment<br \/>\u2193<br \/>continuous casting<br \/>\u2193<br \/>heat<br \/>\u2193<br \/>Controlled Rolling<br \/>\u2193<br \/>harden by quenching<br \/>\u2193<br \/>low tempering<br \/><br \/>\u2193<br \/>Q1300 Finished Steel Plate<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-96615df e-con-full e-flex e-con e-child\" data-id=\"96615df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fce6ded elementor-widget elementor-widget-spacer\" data-id=\"fce6ded\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div 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https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-High-Tensile-Steel-Plates-600x444.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d0f83f8 e-flex e-con-boxed e-con e-parent\" data-id=\"d0f83f8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4b8a9a9 e-con-full e-flex e-con e-child\" data-id=\"4b8a9a9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ecf00a1 elementor-widget elementor-widget-image\" data-id=\"ecf00a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"468\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-MPa-grade-steel-plates.png\" class=\"attachment-large size-large wp-image-4074\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-MPa-grade-steel-plates.png 700w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-MPa-grade-steel-plates-18x12.png 18w, https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/Q1300-MPa-grade-steel-plates-600x401.png 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-221926c e-con-full e-flex e-con e-child\" data-id=\"221926c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d60c881 elementor-widget elementor-widget-text-editor\" data-id=\"d60c881\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p>\u00a0<\/p><p><strong><span style=\"color: #008000;\">S1300QL High Strength Steel Plate&#8212;-Processing performance<\/span><\/strong><\/p><p>\u00a0<\/p><ul><li>Formability<\/li><li>Weldability<\/li><li>Cutting ability<\/li><li>Machine processing<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2294c66 e-flex e-con-boxed e-con e-parent\" data-id=\"2294c66\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-29cb2f1 e-con-full e-flex e-con e-child\" data-id=\"29cb2f1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9173ca elementor-widget elementor-widget-spacer\" data-id=\"a9173ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43f91f2 elementor-widget elementor-widget-text-editor\" data-id=\"43f91f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #008000;\">S1300QL High Strength Steel Plates &#8211; Factory Inspection Items<\/span><\/strong><\/p><ul><li>Chemical composition analysis\/<\/li><li>Tensile test\/<\/li><li>Impact test\/<br \/>Ultrasonic testing UT inspection\/<\/li><li>Hardness test\/<\/li><li>Metallographic analysis\/<\/li><li>Bending test\/<\/li><li>Dimensional inspection\/<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3c70753 e-con-full e-flex e-con e-child\" data-id=\"3c70753\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eb57db3 elementor-widget elementor-widget-image\" data-id=\"eb57db3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/S1300QL-High-Strength-Steel-Plate.png\" class=\"attachment-large size-large wp-image-4075\" alt=\"\" srcset=\"https:\/\/jblstainless.com\/wp-content\/uploads\/2026\/08\/S1300QL-High-Strength-Steel-Plate.png 867w, 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Grades<\/span><\/strong><\/h3><table><thead><tr><th align=\"left\">&#8220;Comparison dimension&#8221;<\/th><th align=\"left\">\u200c<strong>Q1300 (Ultra-high-strength steel)<\/strong>\u200c<\/th><th align=\"left\">\u200c<strong>Q690\/Q890 (High-strength steel)<\/strong>\u200c<\/th><th align=\"left\">\u200c<strong>Q355\/Q460 (Ordinary high-strength steel)<\/strong>\u200c<\/th><\/tr><\/thead><tbody><tr><td align=\"left\">\u200clower limit of yield strength\u200c<\/td><td align=\"left\">\u200c<strong>\u22651300 MPa<\/strong>\u200c<\/td><td align=\"left\">690 &#8211; 890 MPa<\/td><td align=\"left\">355 &#8211; 460 MPa<\/td><\/tr><tr><td align=\"left\">\u200clower limit of yield strength\u200c<\/td><td align=\"left\">1350 &#8211; 1700 MPa<\/td><td align=\"left\">770 &#8211; 980 MPa<\/td><td align=\"left\">470 &#8211; 630 MPa<\/td><\/tr><tr><td align=\"left\">\u200cCore process route\u200c<\/td><td align=\"left\">\u200cQuenching + tempering (quenching and tempering)\u200c, strict cooling control is required<\/td><td align=\"left\">Controlled rolling and controlled cooling (TMCP) or simple quenching and tempering<\/td><td align=\"left\">Hot rolling or normalizing, no complex heat treatment required<\/td><\/tr><tr><td align=\"left\">\u200cstrengthening mechanism\u200c<\/td><td align=\"left\">Phase transformation strengthening (martensite\/bainite) + precipitation strengthening<\/td><td align=\"left\">Fine grain strengthening + precipitation strengthening + partial phase transformation<\/td><td align=\"left\">Fine grain strengthening + solid solution strengthening<\/td><\/tr><tr><td align=\"left\">\u200cstrengthening mechanism\u200c<\/td><td align=\"left\">Extremely difficult. Requires high preheating (200\u2103+), low-hydrogen welding materials, and strict post-heating.<\/td><td align=\"left\">Difficult. Requires preheating (100-150\u2103) and process control.<\/td><td align=\"left\">Good. The conventional welding process will suffice.<\/td><\/tr><tr><td align=\"left\">\u200cPlastic toughness characteristics\u200c<\/td><td align=\"left\">The elongation is relatively low (about 10%-12%), and it relies on the low-temperature impact energy (D\/E grade).<\/td><td align=\"left\">Medium elongation (14%-16%)<\/td><td align=\"left\">High elongation rate (17%-22%), excellent comprehensive performance<\/td><\/tr><tr><td align=\"left\">\u200cTypical application scenarios\u200c<\/td><td align=\"left\">Extremely high \u200c, only a few domestic steel mills can produce stably<\/td><td align=\"left\">Heavy construction machinery, main trusses of long-span Bridges, pressure vessels<\/td><td align=\"left\">Building steel structures, ordinary vehicle chassis, general machinery<\/td><\/tr><tr><td align=\"left\">\u200cCost and Capacity\u200c<\/td><td align=\"left\">\u200cExtremely high \u200c, only a few domestic steel mills can produce stably<\/td><td align=\"left\">The mainstream steel mills have the production capacity<\/td><td align=\"left\">Low, large-scale industrial production<\/td><\/tr><tr><td align=\"left\">\u200cRepresentative grade example\u200c<\/td><td align=\"left\">Q1300D, Q1300E<\/td><td align=\"left\">Q690D, Q890D<\/td><td align=\"left\">Q355B, Q460C<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>As an ultra-high-strength steel for construction machinery, Q1300E has a yield strength of up to 1300 megapascals &#8211; before this, domestic steel enterprises could only produce products with a strength of 1100 megapascals, and this field had long relied on imports.<\/p>\n<p><strong><span style=\"color: #008000;\">Q1300D<\/span><\/strong><\/p>\n<p><strong><span style=\"color: #008000;\">Q1300E<\/span><\/strong><\/p>","protected":false},"featured_media":4099,"template":"","meta":{"_eb_attr":""},"product_brand":[],"product_cat":[68],"product_tag":[],"class_list":["post-4061","product","type-product","status-publish","has-post-thumbnail","product_cat-high-strength-steel-plate","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product\/4061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":5,"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product\/4061\/revisions"}],"predecessor-version":[{"id":4103,"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product\/4061\/revisions\/4103"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/media\/4099"}],"wp:attachment":[{"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/media?parent=4061"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product_brand?post=4061"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product_cat?post=4061"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jblstainless.com\/kk\/wp-json\/wp\/v2\/product_tag?post=4061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}