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ISO/DIS 18489

Thermoplastic materials for piping systems — Determination of resistance to slow crack growth under cyclic loading — Cracked Round Bar (CRB) test method

General information

40.20     Oct 15, 2025

ISO

ISO/TC 138/SC 5

International Standard

23.040.45     23.040.20  

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Scope

ISO 18489:2015 specifies a method to determine the resistance to slow crack growth (SCG) of polyethylene materials, pipes, and fittings. The test is applicable to samples taken from compression moulded sheet or extruded pipes and injection moulded fittings of suitable thickness.
ISO 18489:2015 provides a method that is suitable for an accelerated fracture-mechanics characterization at ambient temperatures of 23 °C of different polyethylene grades, especially for PE 80 and PE 100 types for pipe applications.
NOTE This test method could be adapted for other thermoplastics materials by developing the procedure using different test parameters.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 18489:2015

NOW

PROJECT
ISO/DIS 18489
40.20 DIS ballot initiated: 12 weeks
Oct 15, 2025

National adoptions

naSRPS EN ISO 18489:2025  
ISS

Thermoplastic materials for piping systems - Determination of resistance to slow crack growth under cyclic loading - Cracked Round Bar (CRB) test method (ISO/DIS 18489:2025)

40.20   DIS ballot initiated: 12 weeks

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