HN-69 Trivalent Chromium Color Passivation
    
    
        Commodity Name
    
    
        HN-69 Trivalent Chromium Color Passivation
    
    
       Composition and Working Conditions
    
    
        
	 
	HN-69                                 120~150mL/L 
	Temperature                       55~65℃ 
	Passivation time                  40~70 seconds 
	pH value                             1.7~2.1      
	Agitation                              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 color passivative film is excellent, can pass 100-hour neutral salt  
	spray test (NSS test).