ISO 527-2-2012 PDF

Full title and description

St ISO 527-2-2012 — Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics. This edition (Edition 2, 2012) specifies the test conditions, specimen types and measurement methods used to determine tensile properties (tensile strength, tensile modulus, elongation at yield and at break) of moulding and extrusion plastics in accordance with the general principles of ISO 527-1.

Abstract

ISO 527-2:2012 defines standardised tensile test conditions for rigid and semi‑rigid thermoplastics and thermosets (including filled and short‑fibre reinforced compounds, but excluding textile fibres) when prepared by molding or extrusion. The standard covers specimen geometry, gauge length options, test speeds and reporting of tensile properties to ensure reproducible, comparable results for quality control, material specification and R&D.

General information

• Status: Withdrawn (superseded by ISO 527-2:2025).
• Publication date: 22 February 2012 (Edition 2, 2012).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 83.080.01 — Plastics in general.
• Edition / version: Edition 2 (2012).
• Number of pages: 11 pages.

(Status and lifecycle: ISO lists the 2012 edition as withdrawn and indicates a new/revised ISO 527-2:2025 has been published, which replaces the 2012 edition.)

Scope

Specifies the test conditions for determining tensile properties of moulding and extrusion plastics, based on the general principles set out in ISO 527-1. Applies to rigid and semi‑rigid thermoplastics and thermosetting materials, including filled and reinforced compounds (excluding textile fibre reinforcements). The standard gives specimen shapes and dimensions, test speeds, environmental conditions and the properties to be reported.

Key topics and requirements

• Specified specimen geometries (typical “dumbbell”/dog‑bone shapes and reference to multipurpose specimens) and preferred gauge lengths (commonly 50 mm or 75 mm depending on specimen type).
• Test speeds and modes (constant rate of grip separation / extension with speeds commonly in the range used for rigid plastics testing, aligned with ISO 527‑1 requirements).
• Measured properties: tensile strength (at yield and at break), tensile modulus (Young’s modulus), elongation at yield and at break, and strain measurement methods.
• Material scope: moulding and extrusion thermoplastics and thermosets, filled/short‑fibre reinforced compounds and thermotropic liquid crystal polymers (textile fibre composites are excluded — see other ISO 527 parts).
• Requirements for grips, alignment, extensometers and prevention of slippage to ensure accurate, repeatable measurement.

Typical use and users

Used by materials testing laboratories, plastics manufacturers, quality assurance teams, product designers and R&D groups to characterise and compare tensile performance of injection‑moulded or extruded plastic parts and raw materials. Also referenced in test reports, material data sheets and procurement specifications.

Related standards

Part of the ISO 527 series on tensile testing of plastics. Commonly used together with ISO 527-1 (general principles), ISO 527-3 (films and sheets), ISO 527-4 and ISO 527-5 (fibre‑reinforced plastics); more recent revisions (for example ISO 527-2:2025) update specimen references and align with ISO 527-1:2019 and ISO 20753 where applicable. ASTM D638 is a commonly referenced alternative tensile test method in some regions.

Keywords

tensile test, plastics, moulding, extrusion, tensile strength, tensile modulus, elongation, ISO 527, specimen geometry, test speed, rigid plastics.

FAQ

Q: What is this standard?

A: ISO 527-2:2012 is the second part of the ISO 527 series specifying tensile test conditions for moulding and extrusion plastics (Edition 2, 2012). It has been withdrawn and superseded by a later revision (ISO 527-2:2025).

Q: What does it cover?

A: It covers specimen types and dimensions, test speeds, environmental/test machine requirements and the procedures to measure tensile properties (strength, modulus, elongation) for rigid and semi‑rigid moulding and extrusion plastics.

Q: Who typically uses it?

A: Testing and R&D laboratories, plastics and compound manufacturers, QA/QC personnel, product designers and standards committees use it for material characterization, acceptance testing and specification.

Q: Is it current or superseded?

A: The 2012 edition is withdrawn. ISO indicates ISO 527-2:2012 has been superseded by ISO 527-2:2025 (the revised document published in June 2025). Users should reference the 2025 edition for the current requirements.

Q: Is it part of a series?

A: Yes — ISO 527 is a multipart series (ISO 527‑1 through ISO 527‑5) covering general principles and test conditions for films/sheets and fibre‑reinforced plastics; Part 2 specifically addressed moulding and extrusion plastics.

Q: What are the key keywords?

A: Tensile test, plastics, moulding, extrusion, specimen geometry, tensile strength, tensile modulus, elongation, ISO 527.