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) .