{"id":5287,"date":"2024-07-31T00:49:54","date_gmt":"2024-07-30T21:19:54","guid":{"rendered":"https:\/\/polymertest.com\/asp_product\/vicat-softening-temperature-and-heat-deflection-temperature-tester\/"},"modified":"2025-12-28T11:21:25","modified_gmt":"2025-12-28T07:51:25","slug":"hdt-and-vicat-softening-temperature-tester","status":"publish","type":"asp_product","link":"https:\/\/polymertest.com\/en\/product_en\/hdt-and-vicat-softening-temperature-tester\/","title":{"rendered":"HDT and Vicat Tester (Heat Deflection &#038; Softening Point)"},"content":{"rendered":"<h2>HDT and Vicat Tester: Advanced Thermal Analysis for Plastics<\/h2>\n<p>In the polymer industry, determining the exact temperature at which a material loses its structural integrity is vital for quality control. The <strong>HDT and Vicat Tester<\/strong> is the standard instrument for measuring these thermal limits. Whether you are manufacturing PVC pipes, injection-molded parts, or raw granules, this apparatus provides the data needed to predict how your product will behave under heat and stress.<\/p>\n<h3>Dual Testing Capabilities<\/h3>\n<p>This versatile machine combines two essential thermal tests into one robust platform:<\/p>\n<ul>\n<li><strong>Vicat Softening Temperature (VST):<\/strong> Determines the temperature at which a flat-ended needle penetrates the specimen to a depth of 1mm. This is crucial for assessing surface softness according to <strong><a href=\"https:\/\/www.iso.org\/standard\/82176.html\" target=\"_blank\" rel=\"nofollow noopener\">ISO 306<\/a><\/strong> and <strong><a href=\"https:\/\/store.astm.org\/d1525-17e01.html\" target=\"_blank\" rel=\"nofollow noopener\"> ASTM D1525.<\/a><\/strong> <\/li>\n<li><strong>Heat Deflection Temperature (HDT):<\/strong> Measures the temperature at which a standard test bar deflects under a specific load (0.45 MPa or 1.8 MPa). This simulates structural failure and is governed by <strong><a href=\"https:\/\/www.iso.org\/standard\/77576.html\" target=\"_blank\" rel=\"nofollow noopener\">ISO 75<\/a><\/strong> and <strong><a href=\"https:\/\/www.astm.org\/d0648-18.html\" target=\"_blank\" rel=\"nofollow noopener\">ASTM D648<\/a><\/strong>.<\/li>\n<\/ul>\n<h3>Precision Engineering and Control<\/h3>\n<p>The accuracy of an HDT\/Vicat test depends entirely on temperature stability. Our device features:<\/p>\n<ul>\n<li><strong>Oil Bath System:<\/strong> A stainless steel tank with a powerful circulation pump ensures uniform temperature distribution, eliminating &#8220;cold spots&#8221; that cause false results.<\/li>\n<li><strong>PID Control:<\/strong> Advanced algorithms maintain a strictly linear heating rate (50\u00b0C\/h or 120\u00b0C\/h) as required by the standards.<\/li>\n<li><strong>Multi-Station Design:<\/strong> Allows for the simultaneous testing of multiple samples to increase laboratory efficiency.<\/li>\n<\/ul>\n<h3>The Importance of Sample Preparation<\/h3>\n<p>For Heat Deflection Testing (HDT), the test specimen must be a perfectly cut rectangular bar. Rough edges from a hand saw will create stress concentrators and skew the results. We highly recommend using a specialized <strong><a href=\"https:\/\/polymertest.com\/en\/product_en\/laboratory-cnc-milling-machine-specimen-preparation\/\">Laboratory CNC Milling Machine<\/a><\/strong>  to prepare your samples to exact standard dimensions.<\/p>\n<h3>Comprehensive Material Characterization<\/h3>\n<p>Thermal testing is often the final step in material validation. To ensure the quality of your incoming raw materials before they are molded, we recommend pairing this device with our <strong><a href=\"https:\/\/polymertest.com\/en\/product_en\/melt-flow-index-tester-mfi-mfr\/\">Melt Flow Index (MFI) Tester<\/a><\/strong> . Together, these instruments provide a complete picture of your polymer&#8217;s rheological and thermal properties.<\/p>\n<h3>Consultation and Purchase<\/h3>\n<p>To request a technical datasheet or a price quotation for the HDT and Vicat Tester, please click the <strong>&#8220;contact for purchase&#8221;<\/strong> button to contact our sales team via WhatsApp. For more details on our range of polymer testing equipment, visit our <strong><a href=\"https:\/\/polymertest.com\/%d8%aa%d9%85%d8%a7%d8%b3-%d8%a8%d8%a7-%d9%85%d8%a7\/\">Contact Us<\/a><\/strong> page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The HDT and Vicat Tester is a dual-function laboratory apparatus designed to determine the thermal stability of polymers. By using a precise, PID-controlled oil bath, it measures both the Heat Deflection Temperature (HDT) and the Vicat Softening Temperature (VST). This multi-station device ensures high throughput and full compliance with international standards ISO 75, ISO 306, and ASTM D648.<\/p>\n","protected":false},"featured_media":3286,"template":"","meta":[],"asp_product_taxonomy":[1621,1622],"class_list":["post-5287","asp_product","type-asp_product","status-publish","has-post-thumbnail","hentry","asp_product_taxonomy-laboratory-equipment-for-all-types-of-polymer-pipes-and-fittings-en","asp_product_taxonomy-lab-equipment-materials-polymers"],"_links":{"self":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/asp_product\/5287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/asp_product"}],"about":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/types\/asp_product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/media\/3286"}],"wp:attachment":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/media?parent=5287"}],"wp:term":[{"taxonomy":"asp_product_taxonomy","embeddable":true,"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/asp_product_taxonomy?post=5287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}