---
title: "Tensile Testing Standards Guides (ASTM D638, D412) | LabsCubed"
description: "Practical guides to ASTM D638 / ISO 527-2 plastic and ASTM D412 / ISO 37 rubber tensile testing, and how automation makes each test faster and more repeatable."
url: https://labscubed.com/resources
---

[Home](https://labscubed.com/)  Resources

Resources

# Tensile testing standards, explained

Practical guides to the standards polymer and rubber labs test to every day, with what each one measures, the equipment it needs, and how automation makes the test faster and more repeatable.

-    [![LabsCubed CubeTen automated plastic tensile testing machine](https://labscubed.com/assets/img/resources/cubeten-machine.webp) Plastics · ASTM D638 / ISO 527-2 **ASTM D638 / ISO 527-2 tensile testing: guide & automation** What the standard measures, specimen types, equipment and extensometers, and how to automate plastic tensile testing with the CubeTen.](https://labscubed.com/resources/astm-d638-iso-527-2-plastic-tensile-testing)
-    [![Video extensometer measuring strain on a rubber tensile specimen](https://labscubed.com/assets/img/resources/feature-video-extensometer.webp) Rubber · ASTM D412 / ISO 37 **ASTM D412 / ISO 37 rubber tensile testing: guide & automation** Dumbbell vs. ring specimens, equipment and extensometers, and how to automate rubber tensile testing with the CubeOne.](https://labscubed.com/resources/astm-d412-iso-37-rubber-tensile-testing)
-    [![LabsCubed test results dashboard](https://labscubed.com/assets/img/resources/step-results-dashboard.webp) White paper **Automation vs. manual testing: the data-backed case** Cost reduction and error elimination, quantified: the business case for switching to automated tensile testing.](https://labscubed.com/white-paper-automation-vs-manual-testing)

From the blog

## Keep exploring

The latest articles on tensile testing and lab automation.

[View all articles →](https://labscubed.com/blog)

-    [![Row of polymer dogbone specimens in an automated tensile-testing feeder tray](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/factors-affecting-tensile-strength-of-polymers/thumb-38269abc-fdb4-48fc-9694-61b53fb5723e.webp?width=640&quality=75) Tensile Testing · 9 min read **Factors Affecting Tensile Strength of Polymers: A Guide** November 11, 2026](https://labscubed.com/post/factors-affecting-tensile-strength-of-polymers)
-    [Testing Standards · 8 min read **High-Density Polyethylene Tensile Strength: Values & Testing** November 11, 2026](https://labscubed.com/post/high-density-polyethylene-tensile-strength)
-    [![Elastomer samples across a range of Shore A hardness grades with a durometer](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/elastomer-hardness/thumb-124653c4-d89c-4502-9a8d-9a7458ff5d92.webp?width=640&quality=75) Testing Standards · 10 min read **Elastomer Hardness: Shore A, IRHD & How to Measure It** November 9, 2026](https://labscubed.com/post/elastomer-hardness)
-    [![EPDM rubber test slabs and a Shore A durometer used for hardness testing](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/epdm-rubber-shore-hardness/thumb-fddb8c96-5a96-4c65-8700-8d35dc3d8066.webp?width=640&quality=75) LabsCubed · 10 min read **EPDM Rubber Shore Hardness: Ranges, Testing & QA Guide** November 9, 2026](https://labscubed.com/post/epdm-rubber-shore-hardness)
-    [![The Hidden Cost of Manual Plastics Testing webinar recap](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/blog/hidden-cost-of-manual-plastics-testing/card.webp?width=640&quality=75) Tensile Testing · 7 min read **The Hidden Cost of Manual Plastics Testing: Why the Entire Testing Workflow Matters** November 6, 2026](https://labscubed.com/post/hidden-cost-of-manual-plastics-testing)
-    [![Handheld Shore A durometer resting on a rubber gasket during a hardness check](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/shore-hardness-tester-for-rubber/thumb-d649b802-a4f3-4022-8f48-4cf36ec66af3.webp?width=640&quality=75) LabsCubed · 10 min read **Shore Hardness Tester for Rubber: How to Choose One** November 6, 2026](https://labscubed.com/post/shore-hardness-tester-for-rubber)
-    [![Silicone rubber samples arranged by shore hardness with a durometer gauge](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/silicone-rubber-shore-hardness/thumb-c2226f58-2192-42f5-80f1-461662013978.webp?width=640&quality=75) Testing Standards · 9 min read **Silicone Rubber Shore Hardness: The Complete Guide** November 6, 2026](https://labscubed.com/post/silicone-rubber-shore-hardness)
-    [![Shore A durometer reading NBR rubber hardness on a nitrile sample](https://grozewxrymeiruhggcdy.supabase.co/storage/v1/render/image/public/blog-images/nbr-rubber-hardness/thumb-d8cf0499-0064-4bd4-a9f6-eb1b3c562eb9.webp?width=640&quality=75) Testing Standards · 7 min read **NBR Rubber Hardness: Shore A Ranges & How to Test It** November 6, 2026](https://labscubed.com/post/nbr-rubber-hardness)