This Standard covers the following processes of the general materials, mechanicals parts and processes (MMPP) flow of ECSS‐Q‐ST‐70:
- The selection of metal alloys for which preference is given to approved data sources (Table 5‐1 to Table 5‐3)
- The criticality analysis to determine if a stress corrosion cracking (SCC) evaluation is necessary
This document does not intend to include all factors and criteria necessary for the total control of stress‐corrosion cracking in all alloys.
The criteria established in this Standard are only applicable to designs for service involving exposure conditions similar to testing conditions.
As regards weldments, this Standard is applicable to aluminium alloys, selected stainless steels in the 300 series and alloys listed in Table 5‐1.
This Standard is not applicable to listed materials whose behaviour differs at elevated temperature and in specific chemical.
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