What is ISO 527-4- Fibre-reinforced plastic composites about?
ISO 527-4 is an International Standard on plastics. ISO 527-4 specifies the test conditions for the determination of the tensile properties of isotropic and orthotropic fibre-reinforced plastic composites, based upon the general principles given in ISO 527-1.
ISO 527-4 gives an outline about the methods that are used to investigate the tensile behaviour of the test specimens and for determining the tensile strength, tensile modulus, Poisson's ratios and other aspects of the tensile stress-strain relationship under the defined conditions.
The test method is suitable for use with the following materials:
- Fibre-reinforced thermosetting and thermoplastic composites incorporating non-unidirectional reinforcements such as mats, woven fabrics, woven rovings, chopped strands, combinations of such reinforcements, hybrids, rovings, short or milled fibres or preimpregnated materials (prepregs);
- Combinations of the above with unidirectional reinforcements and multidirectional reinforced materials constructed from unidirectional layers, provided such laminates are symmetrical;
- Finished products made from materials mentioned above.
The reinforcement fibres covered include glass fibres, carbon fibres, aramid fibres and other similar fibres.
ISO 527-4 introduces a new test specimen, type 4, with a tapered geometry for use without end tabs. The geometry has been developed to overcome difficulties with bonding end-tabbed test specimens, especially when testing materials based on a thermoplastic matrix. Guidance on gripping, including grip face design, is also added.
Note 1 – Unidirectional reinforced materials are covered by ISO 527-5
Note 2 - Injection moulded specimens are covered by ISO 527-2.
Note 3 - Materials with completely or mainly unidirectional reinforcements are covered by ISO 527-5.
Who is ISO 527-4- Fibre-reinforced plastic composites for?
ISO 527-4 on fibre-reinforced plastic composites is useful for:
- Manufacturers of plastics
- Packaging industries
- Manufacturing of building and construction materials
- Textile industry
- Electrical and electronic equipment manufacturers
- Aerospace industry
- Sports goods manufacturers
- Automobile and ship parts manufacturers
Why should you use ISO 527-4- Fibre-reinforced plastic composites?
Fibre-reinforced plastic composites are used in a number of industries. It is versatile and useful due to its features like light weight, sturdiness, ease of installation, and resistance to corrosion and hence, lower maintenance.
ISO 527-4 provides you with the required characteristics determination of the tensile properties of isotropic and orthotropic fibre-reinforced plastic composites. As a manufacturer, you can use ISO 527-4 in the production of fibre-reinforced plastic composites of high quality and durability. ISO 527-4 assists you in improving the quality of fibre-reinforced plastic composites and makes it safer to use. With compliance to ISO 527-4, you can demonstrate the reliability of your products and build trust in their use.
What’s changed since the last update?
BS EN ISO 527-4:2021 supersedes BS EN ISO 5274:1997, which is withdrawn.