YS/T 539.6-2006 Nickel-based alloy powder chemical analysis method Titanium trichloride-potassium dichromate titration method for determination of iron content (English Version)
2009YS/T 539.6-2009 Methods for chemical analysis of nickel base alloy powder.Part 6:Determination of iron content.Titanium trichloride-potassium dichromate titration
2006YS/T 539.6-2006 Nickel-based alloy powder chemical analysis method Titanium trichloride-potassium dichromate titration method for determination of iron content