{"id":7992,"date":"2026-03-23T16:56:41","date_gmt":"2026-03-23T08:56:41","guid":{"rendered":"http:\/\/www.camcjsw-testmachines.com\/?p=7992"},"modified":"2026-03-23T17:00:11","modified_gmt":"2026-03-23T09:00:11","slug":"industry-standard-plastics-astm-d1525","status":"publish","type":"post","link":"http:\/\/www.camcjsw-testmachines.com\/es\/industry-standard-plastics-astm-d1525\/","title":{"rendered":"Industry Standard &#8211; Plastics &#8211; ASTM D1525"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7992\" class=\"elementor elementor-7992\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc52355 e-flex e-con-boxed e-con e-parent\" data-id=\"dc52355\" 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-3d1d49c elementor-widget elementor-widget-heading\" data-id=\"3d1d49c\" 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 D1525 Standard Test Method for VICAT Softening Temperature of Plastics<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a202d8 elementor-widget elementor-widget-text-editor\" data-id=\"4a202d8\" 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>This test method covers determination of the temperature at which a specified needle penetration occurs when specimens are subjected to specified\u00a0controlled test\u00a0conditions.\u00a0The reference method for uniform heat transfer is the oil bath. Other transmission media such as air or direct contact with a heating device are also possible. The VICAT Softening Temperature\/ VST is interpreted as a temperature value at which a thermoplastic begins to change from a solid state to a melt.<\/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-3e1366b e-flex e-con-boxed e-con e-parent\" data-id=\"3e1366b\" 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-0c6f380 elementor-widget elementor-widget-heading\" data-id=\"0c6f380\" 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\">Objective and applications<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c5acb95 elementor-widget elementor-widget-text-editor\" data-id=\"c5acb95\" 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>The VST and\u00a0HDT provide important comparative values for plastics used in high-temperature environments:<\/p><p>In the area of product development, they can also serve as a reference point for the operating temperature range or for pre-selection of potentially suitable materials in relation to the temperatures at which they will be used;<\/p><p>In quality assurance,\u00a0they help in showing differences in the quality of the material during manufacturing, or as a relative comparison value for the evaluation of possible plastics alternatives.<\/p><p><img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1525-1.webp\" alt=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1525-1.webp\" \/>\u00a0<\/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-ca1502a e-flex e-con-boxed e-con e-parent\" data-id=\"ca1502a\" 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-a8ed9d5 elementor-widget elementor-widget-heading\" data-id=\"a8ed9d5\" 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-f4d9c5e elementor-widget elementor-widget-text-editor\" data-id=\"f4d9c5e\" 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>Use at least two specimens to test each sample.The specimen shall\u00a0be flat,\u00a0between\u00a03mm\u00a0and\u00a06.5mm thick,\u00a0and at\u00a0least 10\u00a0by\u00a010mm\u00a0in area or\u00a010mm in diameter.\u00a0If an individual layer of\u00a0the\u00a0specimen is\u00a0less\u00a0than\u00a03mm, it is\u00a0permissible\u00a0to stack not\u00a0more\u00a0than\u00a03 layers\u00a0to\u00a0achieve\u00a0the\u00a0minimum thickness.\u00a0The\u00a0specimens\u00a0shall\u00a0be\u00a0cut\u00a0from sheet\u00a0or molded material.\u00a0The\u00a0type of mold\u00a0and\u00a0the\u00a0molding\u00a0process used\u00a0to produce test specimens will affect the\u00a0results obtained in the test.\u00a0Molding conditions shall be in accordance with the standard\u00a0for the material\u00a0being tested\u00a0or \u00a0should\u00a0be agreed\u00a0upon between the\u00a0cooperating\u00a0laboratories.<\/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-23c099d e-flex e-con-boxed e-con e-parent\" data-id=\"23c099d\" 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-6dfc926 elementor-widget elementor-widget-heading\" data-id=\"6dfc926\" 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 procedure<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-98639c7 elementor-widget elementor-widget-text-editor\" data-id=\"98639c7\" 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>ASTM D1525 specifies 20\u00b0C~23\u00b0C and allows temperatures up to 30\u00b0C.<\/p><p>A\u00a0needle-shaped Indenter with a round cross-sectional area of 1 mm<sup>2<\/sup>\u00a0is placed on the plastic specimen and loaded with a defined test weight. After the test weight is applied, the material begins to deform over time. This part of the deformation is undesirable and is minimized by zeroing the displacement measurement of the needle penetration after 5 minutes have passed. The specimen is then heated at a specified heating rate. The VST is determined when the needle penetration reaches a depth of 1 mm.<img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1525-2.webp\" alt=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/ASTM-D1525-2.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 D1525 Standard Test Method for VICAT Softening Temperature of Plastics This test method covers determination of the temperature at which a specified needle penetration occurs when specimens are subjected to specified\u00a0controlled test\u00a0conditions.\u00a0The reference method for uniform heat transfer is the oil bath. Other transmission media such as air or direct contact with a heating [&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-7992","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 D1525 - 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-d1525\/\" \/>\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 D1525\" \/>\r\n<meta property=\"og:description\" content=\"ASTM D1525 Standard Test Method for VICAT Softening Temperature of Plastics This test method covers determination of the temperature at which a specified needle penetration occurs when specimens are subjected to specified\u00a0controlled test\u00a0conditions.\u00a0The reference method for uniform heat transfer is the oil bath. 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