QJ 484-1990
Test method for resistance to sulfide discoloration of silver coatings (English Version)
- Standard No.
- QJ 484-1990
- Language
- Chinese, Available in English version
- Release Date
- 1990
- Published By
- Professional Standard - Aerospace
- Latest
- QJ 484-1990
- Replace
- QJ 484-1979
QJ 484-1990 history
- 1990 QJ 484-1990 Test method for resistance to sulfide discoloration of silver coatings
- 1970 QJ 484-1979 Test method for resistance of silver plating to hydrogen sulfide
