ISO/CD 25369

Evaluation method on piping materials compatibility in high-pressure hydrogen atmosphere applications

General information

Current stage: 30.60 Close of voting/ comment period Feb 7, 2026

Originator: ISO

Owner: ISO/TC 17/SC 7 Methods of testing (other than mechanical tests and chemical analysis)

Type: International Standard

Scope

This document provides an evaluation screening method for assessing the resistance to hydrogen embrittlement in high-pressure hydrogen atmospheres for steel pipes.

The compatibility for use in a high-pressure hydrogen atmosphere is evaluated using two types of specimens with drilled holes according to various steel pipe sizes.

Life cycle

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ISO/CD 25369
30.60 Close of voting/ comment period
Feb 7, 2026