---
code: "ISO 527-1"
title: "Plastics — Determination of tensile properties — Part 1 General principles"
institution: "ISO"
category: "material-testing"
revision: "2019"
scope: "General principles for determining tensile modulus, strength, and strain of plastics using defined specimen types and test speeds. Supports comparative evaluation of thermoplastics, thermosets, and fiber-reinforced grades."
testMethod: "A dog-bone or bar specimen is strained under controlled speed while force and extension are recorded; modulus is typically taken in the initial linear region and strength at maximum load or break as specified."
specimenRequirements: "Specimen type and thickness shall match the standard tab; conditioning prior to test is often required. Grips and tabs (if used) must prevent slippage; non-reinforced films may need special fixtures."
url: "https://vectorbtc.com.tr/resources/standards/iso-527-1/"
---

ISO 527 works with part 2 and part 3 documents that specify specimen dimensions for different plastic forms.