Passivation Chemicals

Stainless Steel Fabrication, Descaling Work, Metal Alloy Passivation, Passivation Of Rolls, Conveyors, Blender, Bulk Handling Systems, Dryers, India

ALLOYS WE SAFELY PASSIVATE
STAINLESS STEEL
ALUMINUM
TITANIUM
BRASS
ZINC & MORE
CUSTOMIZED SOLUTION
PICKLING
PASSIVATION
ABOUT DESCALING
WATER SCALE
PROCESS SCALE
ASTM - AMERICAN STANDARD OF TESTING MATERIAL
   
 

History :

QQ-P-35 C has been cancelled and superseded by ASTM A967- 01e1 10 - Oct - 2001


ASTM A 967 - 10el 10-Oct-2001 States that -
Regardless of which treatment is selected, the passivation effectiveness must be confirmed by one or more specified test practices to qualify for certification.


Active Standards

1. ASTM A 967 - 05
2. ASTM A 380 - 06


( Standard Practice for Cleaning, Decaling, and Passivation of Stainless Steel Parts & equipments )


Active Standard ASTM A 380 - 06

Suggest precautions for cleaning, descaling and passivation for new Stainless Steel parts.

Defines passivation, contaminants and allows agreement between manufacturer and purchaser.

Spcifies attainments of cleanliness.

Method described for the detection of free iron, transparent chemicals and oily deposits are used as surface passivation and meaningful tests.


Confirmatory Test

Active Standard : A967 - 05

1.4.1   Practice A - Water Immersion Test
1.4.2   Practice B - High Humidity Test
1.4.3   Practice C - Salt Spray Test
1.4.4   Practice D - Copper Sulphate Test
1.4.5   Practice E - K - Ferricyanide - HNO3.
1.4.6   Practice F - Free Iron Test


 
ASTM A967-99e1 gives the purchaser a wide choice of pre-treatments, passivation treatments, post-treatments, and testing methods. ASTM A967-99e1 PASSIVATION Federal

Specification QQ-P-35C "Passivation Treatments for Corrosion Resistant Steel" has been cancelled. This federal specification is superseded by ASTM A967-99E1.

"Standard Specification for Chemical Passivation Treatments for Stainless Parts", revised January 2000, and adopted by the Department of Defense. Under this new specification, electro- polishing is recognized as one of the methods of providing passivation without further treatment. In addition to electro - polishing, various other methods. Such as immersion in nitric or citric acid based solutions are permissible.
 
REFERENCES
CORROSION
TOTAL PASSIVATION
PASSIVATION TESTS
WELDING & PASSIVATION
ASTM & SPECIFICATIONS
STANDARD SOLUTIONS
ABOUT SPR 3AN
OUR PRODUCT LINE
OTHERS
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