{"id":1335,"date":"2025-08-05T09:17:30","date_gmt":"2025-08-05T09:17:30","guid":{"rendered":"https:\/\/www.plastictensile.com\/?page_id=1335"},"modified":"2025-08-05T09:17:32","modified_gmt":"2025-08-05T09:17:32","slug":"iso-37","status":"publish","type":"page","link":"https:\/\/www.plastictensile.com\/uk\/iso-37\/","title":{"rendered":"ISO 37"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"1335\" class=\"elementor elementor-1335\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7fcfc64e e-flex e-con-boxed e-con e-parent\" data-id=\"7fcfc64e\" 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-36e0002 elementor-widget elementor-widget-text-editor\" data-id=\"36e0002\" 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\t\t\t\t\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-4a4ada9 e-flex e-con-boxed e-con e-parent\" data-id=\"4a4ada9\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-a916be1 e-con-full e-flex e-con e-child\" data-id=\"a916be1\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7d275a7 e-con-full e-flex e-con e-child\" data-id=\"7d275a7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c10b4e2 elementor-widget elementor-widget-image\" data-id=\"c10b4e2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"816\" src=\"https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-2_11zon-768x816.webp\" class=\"attachment-medium_large size-medium_large wp-image-1337\" alt=\"iso 37 tensile tester\" srcset=\"https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-2_11zon-768x816.webp 768w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-2_11zon-282x300.webp 282w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-2_11zon-964x1024.webp 964w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-2_11zon-1446x1536.webp 1446w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-2_11zon-1928x2048.webp 1928w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-01f82b7 e-con-full e-flex e-con e-child\" data-id=\"01f82b7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45846b0 elementor-widget elementor-widget-heading\" data-id=\"45846b0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">ISO 37<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b0db79 elementor-widget elementor-widget-heading\" data-id=\"8b0db79\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Elongation and Breaking Force  Testing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fd0f4a6 e-con-full e-flex e-con e-child\" data-id=\"fd0f4a6\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-60bfba2 elementor-widget elementor-widget-text-editor\" data-id=\"60bfba2\" 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\t\t<p data-start=\"313\" data-end=\"945\">In the field of rubber, thermoplastic elastomers, and flexible thin film materials, mechanical performance is a critical factor in product quality and safety. One key property to evaluate is <strong data-start=\"504\" data-end=\"518\">\u043f\u043e\u0434\u043e\u0432\u0436\u0435\u043d\u043d\u044f<\/strong>\u2014how much a material stretches before breaking. The international standard <strong data-start=\"593\" data-end=\"603\">ISO 37<\/strong> provides a detailed and reliable method for determining the <strong data-start=\"664\" data-end=\"700\">tensile stress-strain properties<\/strong> of vulcanized or thermoplastic rubber. In this article, we explore ISO 37\u2019s testing procedures, its importance in material quality control, and how modern equipment like the <strong data-start=\"875\" data-end=\"900\">TST-01 tensile tester<\/strong> can support accurate and repeatable results.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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-5094744 e-flex e-con-boxed e-con e-parent\" data-id=\"5094744\" 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-95627a6 elementor-widget elementor-widget-heading\" data-id=\"95627a6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Elongation and Its Role in Material Performance<\/h2>\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-91ed2aa e-flex e-con-boxed e-con e-parent\" data-id=\"91ed2aa\" 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-fec241f elementor-widget elementor-widget-text-editor\" data-id=\"fec241f\" 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\t\t<p data-start=\"1210\" data-end=\"1449\">In simple terms, <strong data-start=\"1227\" data-end=\"1241\">\u043f\u043e\u0434\u043e\u0432\u0436\u0435\u043d\u043d\u044f<\/strong> is the percentage increase in length a material undergoes when pulled. ISO 37 defines several key measurements, including <strong data-start=\"1364\" data-end=\"1387\">elongation at break<\/strong>, which reflects how far a sample can stretch before it snaps.<\/p>\n<p data-start=\"1451\" data-end=\"1744\">This matters in real-world applications. Seals, gloves, packaging films, medical tubing\u2014these products must be able to stretch without failing. By measuring how rubber or film materials respond under load, manufacturers can predict performance, spot weaknesses, and ensure product reliability.<\/p>\n<p data-start=\"1746\" data-end=\"2016\">It\u2019s also important to understand the <strong data-start=\"1784\" data-end=\"1830\">definition of elongation in a tensile test<\/strong>: it\u2019s the measured strain, expressed as a percentage of the original gauge length, when force is applied. This metric helps link material behavior with real-life application conditions.<\/p>\t\t\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-19cc3ce e-flex e-con-boxed e-con e-parent\" data-id=\"19cc3ce\" 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-c2dadc4 elementor-widget elementor-widget-heading\" data-id=\"c2dadc4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Equipment and Setup for ISO 37 Testing<\/h2>\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-47f2e33 e-flex e-con-boxed e-con e-parent\" data-id=\"47f2e33\" 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-c2e9608 elementor-widget elementor-widget-text-editor\" data-id=\"c2e9608\" 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\t\t<p data-start=\"2066\" data-end=\"2144\">To properly carry out tests according to ISO 37, you need the right equipment:<\/p>\n<ul data-start=\"2146\" data-end=\"2413\">\n<li data-start=\"2146\" data-end=\"2238\">\n<p data-start=\"2148\" data-end=\"2238\">A <strong data-start=\"2150\" data-end=\"2192\">tensile and elongation testing machine<\/strong> with accurate force and extension measurement<\/p>\n<\/li>\n<li data-start=\"2239\" data-end=\"2292\">\n<p data-start=\"2241\" data-end=\"2292\">Grips designed for dumbbell- or ring-shaped samples<\/p>\n<\/li>\n<li data-start=\"2293\" data-end=\"2352\">\n<p data-start=\"2295\" data-end=\"2352\">A standardized die cutter to prepare consistent specimens<\/p>\n<\/li>\n<li data-start=\"2353\" data-end=\"2413\">\n<p data-start=\"2355\" data-end=\"2413\">Tools for measuring thickness, width, and sample condition<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2415\" data-end=\"2742\">A high-quality <strong data-start=\"2430\" data-end=\"2485\">mechanical testing machine for thin film elongation<\/strong>\u2014like the <strong data-start=\"2495\" data-end=\"2520\">TST\u201101 Tensile Tester<\/strong>\u2014makes a significant difference in day-to-day lab operations. Its ability to adjust test speeds, support various sample shapes, and provide live feedback on stress-strain curves improves both efficiency and result quality.<\/p>\t\t\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-c457dc8 e-flex e-con-boxed e-con e-parent\" data-id=\"c457dc8\" 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-6de35cd elementor-widget elementor-widget-heading\" data-id=\"6de35cd\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Breaking Force and Stress-Strain Behavior<\/h2>\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-965a247 e-flex e-con-boxed e-con e-parent\" data-id=\"965a247\" 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-b5be869 elementor-widget elementor-widget-text-editor\" data-id=\"b5be869\" 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\t\t<p data-start=\"2795\" data-end=\"2949\">As a tensile test progresses, the <strong data-start=\"2829\" data-end=\"2847\">breaking force<\/strong> is recorded at the moment the material ruptures. ISO 37 requires tracking several related properties:<\/p>\n<ul data-start=\"2951\" data-end=\"3271\">\n<li data-start=\"2951\" data-end=\"3010\">\n<p data-start=\"2953\" data-end=\"3010\"><strong data-start=\"2953\" data-end=\"2973\">\u041c\u0456\u0446\u043d\u0456\u0441\u0442\u044c \u043d\u0430 \u0440\u043e\u0437\u0440\u0438\u0432<\/strong>: the maximum stress before failure<\/p>\n<\/li>\n<li data-start=\"3011\" data-end=\"3087\">\n<p data-start=\"3013\" data-end=\"3087\"><strong data-start=\"3013\" data-end=\"3036\">\u041f\u043e\u0434\u043e\u0432\u0436\u0435\u043d\u043d\u044f \u043f\u0440\u0438 \u0440\u043e\u0437\u0440\u0438\u0432\u0456<\/strong>: how far the material stretches before it breaks<\/p>\n<\/li>\n<li data-start=\"3088\" data-end=\"3179\">\n<p data-start=\"3090\" data-end=\"3179\"><strong data-start=\"3090\" data-end=\"3122\">Stress at a given elongation<\/strong>: how much force is needed to reach a defined extension<\/p>\n<\/li>\n<li data-start=\"3180\" data-end=\"3271\">\n<p data-start=\"3182\" data-end=\"3271\"><strong data-start=\"3182\" data-end=\"3217\">Elongation at a specific stress<\/strong>: how much the material stretches under a certain load<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3273\" data-end=\"3484\">To record these values with confidence, labs rely on a capable <strong data-start=\"3336\" data-end=\"3361\">breaking force tester<\/strong>. The TST\u201101, for example, offers Class 1 load accuracy and repeatability across a wide range of materials and thicknesses.<\/p>\t\t\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-db85dff e-flex e-con-boxed e-con e-parent\" data-id=\"db85dff\" 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-c1a66b5 elementor-widget elementor-widget-heading\" data-id=\"c1a66b5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ISO 37 Test Procedure for Elongation and Tensile Properties<\/h2>\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-4b04fea e-flex e-con-boxed e-con e-parent\" data-id=\"4b04fea\" 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-fe0522e elementor-widget elementor-widget-text-editor\" data-id=\"fe0522e\" 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\t\t<p data-start=\"3545\" data-end=\"3823\">Not all materials behave the same during testing. That\u2019s why <strong data-start=\"3606\" data-end=\"3651\">test speed adjustment based on elongation<\/strong> is a key part of ISO 37. The standard specifies speeds like 500 mm\/min, but slower or faster settings may be necessary depending on the material\u2019s elasticity or stiffness.<\/p>\n<p data-start=\"3825\" data-end=\"4096\">The ability to fine-tune the test speed is essential when dealing with materials that stretch easily\u2014or those that don\u2019t. Using a machine like the TST\u201101 allows operators to set speeds that align with both the standard and the specific needs of the material being tested.<\/p>\t\t\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-0e34e6b e-flex e-con-boxed e-con e-parent\" data-id=\"0e34e6b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3177a9a e-con-full e-flex e-con e-child\" data-id=\"3177a9a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0b711d3 elementor-widget elementor-widget-text-editor\" data-id=\"0b711d3\" 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\t\t<h3 data-start=\"663\" data-end=\"688\">1. Sample Preparation<\/h3>\n<ul data-start=\"690\" data-end=\"1365\">\n<li data-start=\"690\" data-end=\"1017\">\n<p data-start=\"692\" data-end=\"778\"><strong data-start=\"692\" data-end=\"709\">Specimen Type<\/strong>: Choose the appropriate shape based on material and test objectives:<\/p>\n<ul data-start=\"781\" data-end=\"1017\">\n<li data-start=\"781\" data-end=\"897\">\n<p data-start=\"783\" data-end=\"897\"><strong data-start=\"783\" data-end=\"802\">Dumbbell-shaped<\/strong> specimens (Type 1, 2, 3, etc.) are most common and preferred for <strong data-start=\"868\" data-end=\"888\">\u043c\u0456\u0446\u043d\u0456\u0441\u0442\u044c \u043d\u0430 \u0440\u043e\u0437\u0440\u0438\u0432<\/strong> testing.<\/p>\n<\/li>\n<li data-start=\"900\" data-end=\"1017\">\n<p data-start=\"902\" data-end=\"1017\"><strong data-start=\"902\" data-end=\"917\">Ring-shaped<\/strong> specimens (Type A or B) may be used for automated setups or where material availability is limited.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1018\" data-end=\"1194\">\n<p data-start=\"1020\" data-end=\"1194\"><strong data-start=\"1020\" data-end=\"1031\">Cutting<\/strong>: Use standard dies or cutters per ISO 37 dimensions. The narrow section of dumbbell specimens should be precisely shaped and smooth to avoid stress concentration.<\/p>\n<\/li>\n<li data-start=\"1195\" data-end=\"1365\">\n<p data-start=\"1197\" data-end=\"1259\"><strong data-start=\"1197\" data-end=\"1210\">Thickness<\/strong>: Ensure samples fall within standard tolerances:<\/p>\n<ul data-start=\"1262\" data-end=\"1365\">\n<li data-start=\"1262\" data-end=\"1299\">\n<p data-start=\"1264\" data-end=\"1299\">Dumbbells: usually <strong data-start=\"1283\" data-end=\"1299\">2.0 \u00b1 0.2 mm<\/strong><\/p>\n<\/li>\n<li data-start=\"1302\" data-end=\"1365\">\n<p data-start=\"1304\" data-end=\"1365\">Rings: radial width and thickness within <strong data-start=\"1345\" data-end=\"1356\">\u00b10.2 mm<\/strong> (Type A)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5161fad e-con-full e-flex e-con e-child\" data-id=\"5161fad\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b813021 elementor-widget elementor-widget-video\" data-id=\"b813021\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=1WDT4LNinmU&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cb12718 e-con-full e-flex e-con e-child\" data-id=\"cb12718\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c3ca240 elementor-widget elementor-widget-text-editor\" data-id=\"c3ca240\" 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\t\t<h3 data-start=\"1372\" data-end=\"1391\">2. Conditioning<\/h3>\n<ul data-start=\"1393\" data-end=\"1631\">\n<li data-start=\"1393\" data-end=\"1515\">\n<p data-start=\"1395\" data-end=\"1515\">Before testing, condition the samples at <strong data-start=\"1436\" data-end=\"1463\">23 \u00b1 2\u00b0C and 50 \u00b1 5% RH<\/strong> for <strong data-start=\"1468\" data-end=\"1489\">at least 16 hours<\/strong>, following <strong data-start=\"1501\" data-end=\"1514\">ISO 23529<\/strong>.<\/p>\n<\/li>\n<li data-start=\"1516\" data-end=\"1631\">\n<p data-start=\"1518\" data-end=\"1631\">If the rubber was recently vulcanized, wait at least <strong data-start=\"1571\" data-end=\"1582\">3 hours<\/strong> before testing to allow properties to stabilize.<\/p>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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-f6e7c20 e-flex e-con-boxed e-con e-parent\" data-id=\"f6e7c20\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4462f0d e-con-full e-flex e-con e-child\" data-id=\"4462f0d\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1830c96 elementor-widget elementor-widget-text-editor\" data-id=\"1830c96\" 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\t\t<h3 data-start=\"1638\" data-end=\"1660\">3. Equipment Setup<\/h3>\n<ul data-start=\"1662\" data-end=\"2094\">\n<li data-start=\"1662\" data-end=\"1769\">\n<p data-start=\"1664\" data-end=\"1769\">Use a <strong data-start=\"1670\" data-end=\"1712\">tensile and elongation testing machine<\/strong> (e.g., <strong data-start=\"1720\" data-end=\"1730\">TST\u201101<\/strong>) that meets ISO 5893 Class 1 accuracy.<\/p>\n<\/li>\n<li data-start=\"1770\" data-end=\"1833\">\n<p data-start=\"1772\" data-end=\"1833\">Ensure the grips match the sample shape and prevent slippage.<\/p>\n<\/li>\n<li data-start=\"1834\" data-end=\"1970\">\n<p data-start=\"1836\" data-end=\"1970\">Set the test <strong data-start=\"1849\" data-end=\"1868\">crosshead speed<\/strong> (typically <strong data-start=\"1880\" data-end=\"1894\">500 mm\/min<\/strong>, but can be 200 or 100 mm\/min depending on sample and elongation behavior).<\/p>\n<\/li>\n<li data-start=\"1971\" data-end=\"2094\">\n<p data-start=\"1973\" data-end=\"2094\">For high-precision strain measurements, use an <strong data-start=\"2020\" data-end=\"2036\">extensometer<\/strong> compliant with Class D or E (depending on dumbbell type).<\/p>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f6d3608 e-con-full e-flex e-con e-child\" data-id=\"f6d3608\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d94237d elementor-widget elementor-widget-text-editor\" data-id=\"d94237d\" 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\t\t<h3 data-start=\"2101\" data-end=\"2125\">4. Testing Procedure<\/h3>\n<ul data-start=\"2127\" data-end=\"2632\">\n<li data-start=\"2127\" data-end=\"2232\">\n<p data-start=\"2129\" data-end=\"2232\">Mount the specimen securely in the machine\u2019s grips, aligning it carefully to avoid bending or twisting.<\/p>\n<\/li>\n<li data-start=\"2233\" data-end=\"2312\">\n<p data-start=\"2235\" data-end=\"2312\">Begin the test: stretch the specimen <strong data-start=\"2272\" data-end=\"2295\">at a constant speed<\/strong> until it breaks.<\/p>\n<\/li>\n<li data-start=\"2313\" data-end=\"2632\">\n<p data-start=\"2315\" data-end=\"2418\">Record force and elongation continuously during the test. For each specimen, obtain the following data:<\/p>\n<ul data-start=\"2421\" data-end=\"2632\">\n<li data-start=\"2421\" data-end=\"2479\">\n<p data-start=\"2423\" data-end=\"2479\"><strong data-start=\"2423\" data-end=\"2448\">Tensile strength (TS)<\/strong>: Maximum stress before failure<\/p>\n<\/li>\n<li data-start=\"2482\" data-end=\"2540\">\n<p data-start=\"2484\" data-end=\"2540\"><strong data-start=\"2484\" data-end=\"2512\">Elongation at break (Eb)<\/strong>: Percentage strain at break<\/p>\n<\/li>\n<li data-start=\"2543\" data-end=\"2632\">\n<p data-start=\"2545\" data-end=\"2632\"><strong data-start=\"2545\" data-end=\"2580\">Stress at given elongation (Se)<\/strong> \u0456 <strong data-start=\"2585\" data-end=\"2620\">elongation at given stress (Es)<\/strong> if required<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\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-d4176ac e-flex e-con-boxed e-con e-parent\" data-id=\"d4176ac\" 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-d447ebf elementor-widget elementor-widget-heading\" data-id=\"d447ebf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Choosing the Right Tensile Tester for ISO 37<\/h2>\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-bb3404d e-flex e-con-boxed e-con e-parent\" data-id=\"bb3404d\" 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-53282fb elementor-widget elementor-widget-text-editor\" data-id=\"53282fb\" 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\t\t<p>To fully comply with ISO 37, your <strong data-start=\"4186\" data-end=\"4204\">\u0440\u043e\u0437\u0440\u0438\u0432\u043d\u0430 \u043c\u0430\u0448\u0438\u043d\u0430<\/strong> needs to be more than just accurate\u2014it should also be flexible, user-friendly, and durable.<\/p>\n<p>\u0423 \"The <a href=\"https:\/\/www.plastictensile.com\/uk\/tensile-strength-of-polyethylene\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"4302\" data-end=\"4327\">TST\u201101 Tensile Tester<\/strong><\/a> by <strong data-start=\"4331\" data-end=\"4351\">Cell Instruments<\/strong> hits all the marks. It\u2019s ideal for:<\/p>\t\t\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-3a4c6e7 e-flex e-con-boxed e-con e-parent\" data-id=\"3a4c6e7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4d60eea e-con-full e-flex e-con e-child\" data-id=\"4d60eea\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c7fbd7f elementor-widget elementor-widget-image\" data-id=\"c7fbd7f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"768\" src=\"https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon-768x768.webp\" class=\"attachment-medium_large size-medium_large wp-image-1338\" alt=\"iso 37 tensile tester\" srcset=\"https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon-768x768.webp 768w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon-300x300.webp 300w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon-1024x1024.webp 1024w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon-150x150.webp 150w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon-1536x1536.webp 1536w, https:\/\/www.plastictensile.com\/wp-content\/uploads\/2025\/08\/iso-37-tensile-tester-1_11zon.webp 1840w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b7a8d3c e-con-full e-flex e-con e-child\" data-id=\"b7a8d3c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ed9a402 elementor-widget elementor-widget-text-editor\" data-id=\"ed9a402\" 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\t\t<ul data-start=\"4389\" data-end=\"4527\">\n<li data-start=\"4389\" data-end=\"4423\">\n<p data-start=\"4391\" data-end=\"4423\">Rubber and elastomer materials<\/p>\n<\/li>\n<li data-start=\"4424\" data-end=\"4469\">\n<p data-start=\"4426\" data-end=\"4469\">Thin films, foils, and flexible packaging<\/p>\n<\/li>\n<li data-start=\"4470\" data-end=\"4527\">\n<p data-start=\"4472\" data-end=\"4527\">Applications in automotive, packaging, medical, and R&amp;D<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4529\" data-end=\"4550\">Key features include:<\/p>\n<ul data-start=\"4552\" data-end=\"4799\">\n<li data-start=\"4552\" data-end=\"4599\">\n<p data-start=\"4554\" data-end=\"4599\">Adjustable testing speeds from 1\u2013500 mm\/min<\/p>\n<\/li>\n<li data-start=\"4600\" data-end=\"4641\">\n<p data-start=\"4602\" data-end=\"4641\">Multi-language touch-screen interface<\/p>\n<\/li>\n<li data-start=\"4642\" data-end=\"4692\">\n<p data-start=\"4644\" data-end=\"4692\">Compatibility with dumbbell and ring specimens<\/p>\n<\/li>\n<li data-start=\"4693\" data-end=\"4734\">\n<p data-start=\"4695\" data-end=\"4734\">Live graphing of force vs. elongation<\/p>\n<\/li>\n<li data-start=\"4735\" data-end=\"4799\">\n<p data-start=\"4737\" data-end=\"4799\">Auto-return, limit protection, and optional printout functions<\/p>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\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-e2c28f7 e-flex e-con-boxed e-con e-parent\" data-id=\"e2c28f7\" 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-32c2da7 elementor-widget elementor-widget-text-editor\" data-id=\"32c2da7\" 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\t\t<p>For labs that routinely test <strong data-start=\"4830\" data-end=\"4853\">elongation at break<\/strong>, or need reliable <strong data-start=\"4872\" data-end=\"4915\">tensile and elongation testing machines<\/strong>, the TST\u201101 offers accuracy and efficiency in one compact, easy-to-operate platform.<\/p>\t\t\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-877388d e-flex e-con-boxed e-con e-parent\" data-id=\"877388d\" 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-344fc7c elementor-widget elementor-widget-heading\" data-id=\"344fc7c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Real-World Applications<\/h2>\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-b467500 e-flex e-con-boxed e-con e-parent\" data-id=\"b467500\" 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-94b78c2 elementor-widget elementor-widget-text-editor\" data-id=\"94b78c2\" 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\t\t<p data-start=\"5035\" data-end=\"5133\">ISO 37 is used across industries where material flexibility and mechanical strength are essential:<\/p>\n<ul data-start=\"5135\" data-end=\"5451\">\n<li data-start=\"5135\" data-end=\"5184\">\n<p data-start=\"5137\" data-end=\"5184\"><strong data-start=\"5137\" data-end=\"5151\">Automotive<\/strong>: rubber seals, hoses, grommets<\/p>\n<\/li>\n<li data-start=\"5185\" data-end=\"5244\">\n<p data-start=\"5187\" data-end=\"5244\"><strong data-start=\"5187\" data-end=\"5198\">\u041c\u0435\u0434\u0438\u0447\u043d\u0456<\/strong>: latex gloves, tubing, film-based packaging<\/p>\n<\/li>\n<li data-start=\"5245\" data-end=\"5316\">\n<p data-start=\"5247\" data-end=\"5316\"><strong data-start=\"5247\" data-end=\"5268\">Consumer products<\/strong>: athletic goods, footwear, elastic components<\/p>\n<\/li>\n<li data-start=\"5317\" data-end=\"5385\">\n<p data-start=\"5319\" data-end=\"5385\"><strong data-start=\"5319\" data-end=\"5332\">Packaging<\/strong>: stretch films, barrier layers, flexible laminates<\/p>\n<\/li>\n<li data-start=\"5386\" data-end=\"5451\">\n<p data-start=\"5388\" data-end=\"5451\"><strong data-start=\"5388\" data-end=\"5403\">Electronics<\/strong>: flexible insulating and protective materials<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5453\" data-end=\"5572\">By measuring elongation and tensile behavior, manufacturers can ensure their products hold up under pressure\u2014literally.<\/p>\t\t\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-219aba0 e-flex e-con-boxed e-con e-parent\" data-id=\"219aba0\" 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-3bae3b1 elementor-widget elementor-widget-heading\" data-id=\"3bae3b1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u0417\u0430\u043a\u043b\u044e\u0447\u043d\u0456 \u0434\u0443\u043c\u043a\u0438<\/h2>\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-2997a86 e-flex e-con-boxed e-con e-parent\" data-id=\"2997a86\" 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-dd3c479 elementor-widget elementor-widget-text-editor\" data-id=\"dd3c479\" 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\t\t<p data-start=\"5598\" data-end=\"5899\">ISO 37 is more than a testing method\u2014it\u2019s a vital tool for understanding how rubber and flexible materials perform under stress. Whether you&#8217;re focused on <strong data-start=\"5753\" data-end=\"5776\">elongation at break<\/strong>, <strong data-start=\"5778\" data-end=\"5804\">stress-strain analysis<\/strong>, or choosing the right <strong data-start=\"5828\" data-end=\"5846\">\u0440\u043e\u0437\u0440\u0438\u0432\u043d\u0430 \u043c\u0430\u0448\u0438\u043d\u0430<\/strong>, ISO 37 gives you a reliable framework to work with.<\/p>\n<p data-start=\"5901\" data-end=\"6111\">And with advanced instruments like the <a href=\"https:\/\/www.celtec.cn\/productinfo\/1228363.html\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"5940\" data-end=\"5965\">TST\u201101 Tensile Tester<\/strong><\/a> \u0432\u0456\u0434 <strong data-start=\"5971\" data-end=\"5991\">Cell Instruments<\/strong>, your lab can perform ISO 37 tests with confidence\u2014backed by precision, flexibility, and dependable results every time.<\/p>\t\t\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>ISO 37 Elongation and Breaking Force Testing In the field of rubber, thermoplastic elastomers, and flexible thin film materials, mechanical performance is a critical factor in product quality and safety. One key property to evaluate is elongation\u2014how much a material stretches before breaking. 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