ASTM A967.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Designation: A 967 05e1 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts1 This standard is issued under the fixed designation A 967; the number immediately following the designation indicates the year of original adoption or, in the …
ASTM A967, 2005 Edition, September 1, 2005 - Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless …
: Designation: A 967 – 05 e1Standard Specif i cation forChemical Passivation Treatments for Stainless Steel Parts 1This standard is issued under the f i xed designation A 967; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
Passivation of Stainless Steel to ASTM A967. Five nitric and citric methods are listed as follows: Nitric 1: 20-25 v% Nitric Acid, 2.5 w% Sodium Dichromate, 120-130F, 20 Mins minimum. Nitric 2: 20-45 v% Nitric Acid, 70-90F, 30 Mins minimum. Nitric 3: 20-25 v% Nitric Acid, 120-140F, 20 Mins minimum. Nitric 4: 45-55 v% Nitric Acid, 120-130F, 30
The parts shall then be thoroughly dried. 10.3The purchaser may specify other post-cleaning treat-ments. 11.Finish 11.1The passivated parts shall exhibit a chemically clean surface and shall,on visual inspection,show no etching, pitting,or frosting resulting from the passivation procedures. 12.Testing Agency 12.1When required,the purchaser
ASTM A967 – Specification for Chemical Passivation Treatments for Stainless Steel Parts, (based on US Defense Department standard QQ-P-35C) In 1997 an alternative British Standard was published: BS EN 2516 – Passivation of Corrosion Resisting Steels and Decontamination of Nickel Base Alloys