GB/T 34542.2-2018 (English Version)

Standard No.: GB/T 34542.2-2018
Language: Chinese, Available in English version
Release Date: 2018
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 34542.2-2018

Scope: This standard specifies the test equipment, test conditions and test methods for the compatibility test of metal materials and hydrogen environment. This standard is applicable to the determination of tensile properties, fatigue properties and fracture mechanical properties of metal materials in a gaseous hydrogen environment.

Introduction

1. Background and significance of the standard

With the increasing proportion of hydrogen in the energy structure, the safety and reliability of hydrogen storage and transportation systems have become the focus of industry attention. GB/T 34542.2-2018 "Hydrogen Storage and Transportation System Part 2: Test Method for Compatibility of Metallic Materials with Hydrogen Environment" aims to provide a scientific basis for the performance testing of metallic materials in a high-pressure hydrogen environment, and ensure the safety of hydrogen during storage and transportation.

2. Comparison of standard frameworks

Standard dimensions	GB/T 34542.1	GB/T 34542.2	GB/T 34542.3
Scope of application	General requirements for hydrogen storage systems	Metallic material compatibility test method	Hydrogen embrittlement sensitivity test method
Core content	Design and manufacturing requirements	Test equipment and conditions	Material performance evaluation
Applicable scenarios	Hydrogen storage facilities	Hydrogen delivery system	Compression and filling equipment

3. Detailed explanation of test equipment and conditions

3.1 Composition of test equipment

The test equipment is mainly composed of a test box, a support device, a measurement device and a loading rod. Among them, the test box is used to provide a high-pressure hydrogen environment, the support device is used to fix the sample, and the measurement device is used to monitor the axial force and deformation.

3.2 Test Condition Control

Gas Source Requirements:The purity of hydrogen used in the test must reach the medium-high purity level, and the oxygen and water contents must be strictly controlled within the specified range.
Temperature Control:The test temperature must be set according to the characteristics of different metal materials. For example, the recommended test temperature for 300 series stainless steel is -53°C.
Pressure Control:The test pressure must be greater than or equal to the expected maximum working pressure and remain within the fluctuation range.

4. Implementation Suggestions and Precautions

To ensure the accuracy and reliability of the test results, it is recommended to take the following measures:

Clean the sample surface in strict accordance with the standard requirements to avoid oil and impurities interfering with the test.
Within 6 months of continuous use, regularly check the oxygen and water content in the test chamber to ensure that it meets the specified requirements.
For equipment that has been out of service for a long time, leakage detection is required before it can be put back into service.

GB/T 34542.2-2018 Referenced Document

GB/T 10623 Metallic material.Mechanical testing.Vocabulary
GB/T 15248 The test method for axial loading constant-amplitude low-cycle fatigue of metallic materials
GB/T 21143 Metallic materials.Unified method of test for determination of quasistatic fracture toughness
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*， 2021-12-31 Update
GB/T 26077 Metallic materials—Fatigue testing—Axial-strain-controlled method*， 2021-04-30 Update
GB/T 29729 Essential requirements for the safety of hydrogen systems*， 2022-12-30 Update
GB/T 3075 Metallic materials—Fatigue testing—Axial force-controlled method*， 2021-08-20 Update
GB/T 34542.1 Storage and transportation systems for gaseous hydrogen—Part 1: General requirements
GB/T 3634.2 Hydrogen.Part 2: Pure hydrogen,high pure hydrogen and ultrapure hydrogen
GB/T 6398 Metallic materials—Fatigue testing—Fatigue crack growth method

GB/T 34542.2-2018 history

2018 GB/T 34542.2-2018 Storage and transportation systems for gaseous hydrogen.Part 2:Test methods for evaluating metallic material compatibility in hydrogen atmosphere

GB/T 34542.2-2018