This standard specifies the quality requirements and inspection methods for chemical (blue) coatings on steel parts. Suitable for quality acceptance of chemical oxidation (blue) coatings on steel parts of aviation products.
HB 5062-1977 history
1996HB 5062-1996 Quality Inspection of Chemical Oxidation (Blue) Film Layer of Iron and Steel Parts
1970HB 5062-1977 Quality Inspection of Chemical Oxidation (Blue) Film Layer of Iron and Steel Parts