ISO 7039:2024
Metallic materials — Tensile testing — Method for evaluating the susceptibility of materials to the effects of high-pressure gas within hollow test pieces
Metallic materials — Tensile testing — Method for evaluating the susceptibility of materials to the effects of high-pressure gas within hollow test pieces
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 22 июля 2024 г.
- Издание:
- ISO IS 7039 edition 1 version 1
- ICS:
- 77.040.10
This document specifies the geometries and proposed finishing procedures of the inner surface of hollow test piece of metallic materials, filled with a high-pressure gaseous medium. The document specifies a tensile testing procedure to evaluate the effect of high-pressure gaseous medium compared to a high-pressure inert gas or air. The document can be used for the screening of metallic materials by evaluating mechanical property changes due to the effects of various test gases, including hydrogen. NOTE Temperature range and pressure range depend on the materials to be tested and test gas to be used.
Abstract
Overview
ISO 7039:2024 - Metallic materials - Tensile testing - Method for evaluating the susceptibility of materials to the effects of high‑pressure gas within hollow test pieces - specifies a standardized screening method to assess how high‑pressure gases (including hydrogen) affect tensile properties of metallic materials. The method uses a cylindrical round bar with a central axial hole (a hollow test piece) that is pressurized internally during uniaxial tensile testing and compares results to the same test filled with a high‑pressure inert gas or air.
Key topics and technical requirements
- Test principle: Tensile test on a hollow specimen with its internal hole pressurized with the test gas; effects are evaluated relative to inert gas/air conditions.
- Specimen geometry: Cylindrical round bar with axial hole. Recommended outer diameter (D) of the parallel part: 3 mm to 12 mm; recommended inner diameter (d): 1 mm to 4 mm; recommended **d/D
Технические детали
- Технический комитет
- ISO/TC 164/SC 1 - Uniaxial testing
- SKU
- ISO 7039:2024
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