{"id":7883,"date":"2026-03-20T16:01:24","date_gmt":"2026-03-20T08:01:24","guid":{"rendered":"http:\/\/www.camcjsw-testmachines.com\/?p=7883"},"modified":"2026-03-20T16:08:20","modified_gmt":"2026-03-20T08:08:20","slug":"industry-standard-plastics-astm-d1621","status":"publish","type":"post","link":"http:\/\/www.camcjsw-testmachines.com\/es\/industry-standard-plastics-astm-d1621\/","title":{"rendered":"Industry Standard &#8211; Plastics &#8211; ASTM D1621"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7883\" class=\"elementor elementor-7883\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2274828 e-flex e-con-boxed e-con e-parent\" data-id=\"2274828\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0700a4d elementor-widget elementor-widget-heading\" data-id=\"0700a4d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h4 class=\"elementor-heading-title elementor-size-default\">ASTM D1621 Compression test on rigid cellular plastic (according to ISO 844)<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c56bd94 elementor-widget elementor-widget-text-editor\" data-id=\"c56bd94\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>Compressive properties include the Compressive Strength, Max.\u00a0Compressive Deformation, and the Compression\u00a0Modulus, which describes the Short-term Deformation under load. The testing standards differ in the dimensions of the specimen and in the test execution.<\/p><p>ISO 844 and EN 826 describes that the movement of the compression platen is typically measured by the cross-head travel of the testing machine with a defined minimum accuracy, ASTM D1621 describes another method that compensates for the self-deformation of the testing machine.\u00a0All these standards permit direct displacement measurement of the compression platen.<\/p>\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-8fdd9ab e-flex e-con-boxed e-con e-parent\" data-id=\"8fdd9ab\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5d22880 elementor-widget elementor-widget-heading\" data-id=\"5d22880\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Relative terms and definition<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd536c9 elementor-widget elementor-widget-text-editor\" data-id=\"fd536c9\" data-element_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<p>Nominal Relative Deformation:<\/p><p><em><i>\u03b5<\/i><\/em><em><i>c, <\/i><\/em>ratio of the reduction (in relation to its initial value)in thickness of the test specimen;<\/p><p>Relative Deformation:<\/p><p><em><i>\u03b5<\/i><\/em><em><i>, <\/i><\/em>ratio of the reduction (in relation to its initial value) of extensometer gauge length;<\/p><p>Compressive Strength:<\/p><p><em><i>\u03c3<\/i><\/em><em><i>m<\/i><\/em>, max. compressive force <em><i>F<\/i><\/em><sub>m<\/sub>\u00a0divided by the initial cross-sectional area <em><i>A<\/i><\/em><sub>0<\/sub>\u00a0of the test specimen when the relative deformation <em><i>\u03b5<\/i><\/em>\u00a0and the nominal relative deformation <em><i>\u03b5c<\/i><\/em>\u00a0respectively is &lt;10%;<\/p><p>Compressive Stress at 10% Nominal Relative Deformation:<\/p><p><em><i>\u03c3<\/i><\/em><em><i>c<\/i><\/em><em><sub><i>10 <\/i><\/sub><\/em>,<em><i>\u00a0<\/i><\/em>ratio of the compressive force <em><i>F<\/i><\/em><sub>10<\/sub>\u00a0at 10% nominal relative deformation <em><i>\u03b5c<\/i><\/em><em><sub><i>10<\/i><\/sub><\/em>\u00a0to the initial cross-sectional area of the test specimen;<\/p><p>Nominal Compressive Modulus of Elasticity:<\/p><p><em><i>Ec <\/i><\/em>, difference in compressive stress divided by the difference in corresponding nominal relative deformation below the proportional limit, i.e.when the relation is linear;<\/p><p>Compressive modulus of Elasticity:<\/p><p><em><i>E<\/i><\/em>, difference in compressive stress divided by the corresponding difference in relative deformation below the proportional limit, i.e. when the relation is linear;<\/p><p>Conventional proportional limit:<\/p><p><em><i>Xe<\/i><\/em>, upper limit of the linear part of the Force-Deformation curve.<\/p>\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-ae491c8 e-flex e-con-boxed e-con e-parent\" data-id=\"ae491c8\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e37df74 elementor-widget elementor-widget-heading\" data-id=\"e37df74\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Test Methods<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-632741e elementor-widget elementor-widget-text-editor\" data-id=\"632741e\" data-element_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<p><strong><b>Procedure A<\/b><\/strong><\/p><p>The compression-testing machine shall be fitted with a system allowing continuous measurement of the displacement x of the movable plate with an accuracy of \u00b15% or \u00b10.1mm if this latter value is a more accurate measurement.<\/p><p><strong><b>Procedure B<\/b><\/strong><\/p><p>The compression-testing machine shall be equipped with an extensometer which directly measures the specimen deformation. If used, however, the extensometer shall comply with class 1 of IS0 9513. The extensometer gauge length as a function of specimen thickness is shown in Table-1.<\/p>\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-d2f5d85 e-flex e-con-boxed e-con e-parent\" data-id=\"d2f5d85\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b08832c elementor-widget elementor-widget-heading\" data-id=\"b08832c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Specimen<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c674a3 elementor-widget elementor-widget-text-editor\" data-id=\"7c674a3\" data-element_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<p><img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1621-1.webp\" alt=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1621-1.webp\" \/><\/p><p><strong><b>Force-Deformation curve<\/b><\/strong><\/p><p>Procedure A<\/p><p>\u00a0<img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1621-2.webp\" alt=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1621-2.webp\" \/><\/p><p>Procedure B<br \/><img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1621-3.webp\" alt=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1621-3.webp\" \/><\/p>\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>","protected":false},"excerpt":{"rendered":"<p>ASTM D1621 Compression test on rigid cellular plastic (according to ISO 844) Compressive properties include the Compressive Strength, Max.\u00a0Compressive Deformation, and the Compression\u00a0Modulus, which describes the Short-term Deformation under load. The testing standards differ in the dimensions of the specimen and in the test execution. ISO 844 and EN 826 describes that the movement of [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[41],"tags":[],"class_list":["post-7883","post","type-post","status-publish","format-standard","hentry","category-application"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v22.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Industry Standard - Plastics - ASTM D1621 - SINOTEST, a brand of JIANGSU WALLONG-HSIN MACHINERY ENGINEERING CORPORATION LTD<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.camcjsw-testmachines.com\/es\/industry-standard-plastics-astm-d1621\/\" \/>\r\n<meta property=\"og:locale\" content=\"es_ES\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Industry Standard - Plastics - ASTM D1621\" \/>\r\n<meta property=\"og:description\" content=\"ASTM D1621 Compression test on rigid cellular plastic (according to ISO 844) Compressive properties include the Compressive Strength, Max.\u00a0Compressive Deformation, and the Compression\u00a0Modulus, which describes the Short-term Deformation under load. 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