标准编号：ISO 20728:2018
中文名称：金属和合金的腐蚀 镁合金抗应力腐蚀开裂性能的测定
英文名称：Corrosion of metal and alloys — Determination of resistance of magnesium alloys to stress corrosion cracking
发布日期：2018-09
标准范围
This document specifies a method for the determination of resistance to stress corrosion cracking
(SCC) of magnesium alloys intended for use in structural applications (such as magnesium front end,
gearbox and clutch housing units, steering column parts, shift actuators, valve covers and housings,
brackets and intake manifold blades, electronic devices, power tools and medical equipment). The
method allows determination of the resistance to SCC as a function of the chemical composition, the
method of manufacture and heat treatment of magnesium alloys.
The document is applicable to cast and wrought magnesium alloys in the form of castings, semi-finished
products, parts and weldments and covers the method of sampling, the types of specimens, the loading
procedure, the type of environment and the interpretation of results.
The document allows assessment of the relative performance of materials and products in environments
containing chlorides or sulphates, provided that the failure mechanism is not changed, but does not
qualify a material or product for service application.
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