{"id":54,"date":"2026-08-18T09:00:00","date_gmt":"2026-08-18T09:00:00","guid":{"rendered":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/what-a-3-1-certificate-should-tell-you\/"},"modified":"2026-08-18T09:00:00","modified_gmt":"2026-08-18T09:00:00","slug":"what-a-3-1-certificate-should-tell-you","status":"publish","type":"post","link":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/what-a-3-1-certificate-should-tell-you\/","title":{"rendered":"What a 3.1 certificate should tell you before you sign for the parts"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An EN 10204 3.1 certificate is the one document that travels with every part we ship. It is also the one most often filed without being read. Here is what to check before you sign the delivery note.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. The heat number matches the part<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every casting and forging we make is stamped with the heat it was poured from. The same number must appear on the certificate. If it doesn&#8217;t, the certificate belongs to a different melt, however good the values look.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Chemistry sits inside the grade, not just the tolerance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Check each element against the standard you ordered, not against the last certificate you received. Three things deserve a second look:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Carbon equivalent, if the part will be welded later<\/li>\n\n\n<li>Residual elements such as copper and tin, which can hurt toughness<\/li>\n\n\n<li>Hydrogen, for thick sections that will see cyclic loads<\/li>\n\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">A certificate is only as good as the test piece behind it. Ask where it was cut, and when.<\/p>\n<cite>Aisha Rahman \u00b7 Quality manager<\/cite><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">3. Mechanical values come from the right test piece<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A tensile bar cut from a separately cast coupon tells you about the coupon. For heavy sections, ask for integral test pieces or prolongations heat treated with the part, and check that the certificate says which one was used.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-content\/uploads\/sites\/15\/2026\/09\/demo14-coils.jpg\" alt=\"Coils of steel in a warehouse, each tagged with a heat number\"\/><figcaption class=\"wp-element-caption\">Every coil, bar and casting in our warehouse carries its heat number on a tag and on the metal.<\/figcaption><\/figure>\n\n\n\n<div class=\"wp-block-group is-style-anps-takeaway\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n\n<h3 class=\"wp-block-heading\">Five-minute checklist<\/h3>\n\n\n\n<ul class=\"wp-block-list checks one\">\n\n<li>Heat number on the part matches the certificate<\/li>\n\n\n<li>Grade and standard match your order<\/li>\n\n\n<li>Test piece type and location are stated<\/li>\n\n\n<li>Heat treatment matches the delivery condition<\/li>\n\n\n<li>Signed by someone independent of production<\/li>\n\n<\/ul>\n\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">If any of these is missing, call us before the parts go into stock. It is far cheaper to fix paperwork at goods-in than at your customer&#8217;s audit.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Heat number, chemistry, mechanical values and who signed it. A short checklist for incoming inspection.<\/p>\n","protected":false},"author":4,"featured_media":23,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[16,17,18],"class_list":["post-54","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-quality","tag-en-10204","tag-incoming-inspection","tag-quality"],"_links":{"self":[{"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/posts\/54","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/comments?post=54"}],"version-history":[{"count":0,"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/posts\/54\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/media\/23"}],"wp:attachment":[{"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/media?parent=54"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/categories?post=54"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/preview.industrial.anpsthemes.com\/demo14\/wp-json\/wp\/v2\/tags?post=54"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}