HN-68 Trivalent Chromium Blue Passivation
Commodity Name
HN-68 Trivalent Chromium Blue Passivation
Composition and Working Conditions
HN-68 50~100mL/L
Temperature 25~35℃
Passivation time 15~30 seconds
pH value 1.8~2.2
Agitation Air agitation or mechanical agitation
Application and Advantage
1. Completely without Cr , can meet the products requirement for exporting to Europe, America, Japan etc.
2. Corrosion- resistance ability of the blue passivative film is excellent, can pass 72-hour neutral salt
spray test (NSS test) .