{"id":70043,"date":"2026-05-17T17:29:33","date_gmt":"2026-05-17T17:29:33","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/en-1561\/"},"modified":"2026-05-19T15:33:07","modified_gmt":"2026-05-19T15:33:07","slug":"en-1561","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/en-1561\/","title":{"rendered":"EN 1561"},"content":{"rendered":"<h2>Technical regulation and scope of the EN 1561 standard<\/h2>\n<p>The European standard EN 1561 establishes strict requirements for the physical and mechanical properties of unalloyed and low-alloy grey cast iron. This regulatory framework covers castings produced by sand casting or similar technological processes that ensure comparable microstructural and strength characteristics.<\/p>\n<p>EV Group China ensures the supply of products that fully comply with this standard, guaranteeing quality control according to the following key parameters:<\/p>\n<ul>\n<li><strong>Tensile strength:<\/strong> tests are conducted on control specimens sampled in accordance with order requirements.<\/li>\n<li><strong>Material hardness:<\/strong> Brinell hardness assessment is performed directly on the castings according to specifications agreed upon between the customer and the EV Group China engineering department.<\/li>\n<\/ul>\n<p>It is important to note that the EN 1561 standard does not apply to pipeline system components (pipes and fittings), which are regulated by the separate EN 877-1 standard.<\/p>\n<h3>Classification of grey cast irons according to the standard<\/h3>\n<p>The standard classifies grey cast irons according to two main criteria, providing engineers with flexibility in selecting materials for specific loads:<\/p>\n<ul>\n<li>6 grades of grey cast iron, classified by tensile strength.<\/li>\n<li>6 grades of grey cast iron, classified by Brinell hardness value.<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[114],"class_list":["post-70043","wiki","type-wiki","status-publish","hentry","wiki_category-en"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/70043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/70043\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=70043"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=70043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}