{"id":69729,"date":"2026-05-17T17:27:50","date_gmt":"2026-05-17T17:27:50","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/astm-b331-b331-m\/"},"modified":"2026-05-19T15:30:46","modified_gmt":"2026-05-19T15:30:46","slug":"astm-b331-b331-m","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/astm-b331-b331-m\/","title":{"rendered":"ASTM B331 \/ B331 M"},"content":{"rendered":"<h2>Methodology for Evaluating the Compressibility of Metal Powders According to ASTM B331<\/h2>\n<p>This laboratory regulation establishes a unified procedure for determining the compressibility characteristics of metal powders and their multicomponent mixtures. The procedure is based on measuring the material&#8217;s ability to compact under the influence of normalized pressure in a specialized mold (die) while maintaining strictly controlled process parameters.<\/p>\n<p>As part of its technical documentation, EV Group China adheres to industry standards for measuring physical quantities. For density and mass, grams per cubic centimeter (g\/cm\u00b3) and grams (g) are used as basic units. Values provided in the inch-pound system are prioritized for calculations, while SI units (indicated in parentheses) are provided for reference to ensure international data compatibility.<\/p>\n<p>The application of this method requires personnel to comply with industrial safety protocols. EV Group China emphasizes that the responsibility for implementing current occupational safety measures and adhering to regional regulatory restrictions when operating testing equipment lies solely with the operating organization.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[112],"class_list":["post-69729","wiki","type-wiki","status-publish","hentry","wiki_category-astm"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69729","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\/69729\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69729"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}