Sunday, December 30, 2012

RE: [MW:16372] SENSITISATION OF STAINLESS STEEL.

Vinu,
 
ASTM 262 is the industry followed stanadrd for intergranular corrosion test. This stsndard  is divdeinto 5 test categoriies:-
  • Practice A- Oxalic Acid  Etch Test for Classification of Etch Structures .
  • Practice B—Ferric Sulfate–Sulfuric Acid Test for Detecting Susceptibility to Intergranular Attack

  • Practice C—Nitric Acid Test for Detecting Susceptibility to Intergranular Attack

  • Practice E—Copper–Copper Sulfate–Sulfuric Acid Test for Detecting Susceptibility to Intergranular Attack

  • Practice F—Copper–Copper Sulfate–50 % Sulfuric Acid Test for Detecting Susceptibility to Intergranular Attack

The best screening for sentization is possible by Practice -A test. Usually a presnce of "Ditched microsotructure" is an indication of sensitization. You may please conatct an experiences laboratory for furtherdeatils.
 
Thanks.
 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist

Ontario, Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

From: Vinu Raveendran <vinuravi007@gmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, December 29, 2012 11:49 AM
Subject: [MW:16359] SENSITISATION OF STAINLESS STEEL.

Dear Member,

How can i detect or find out if a stainless steel material is sensitised or not.?
 Is there any tests to find sensitisation of ss?codes?

Thankyou!

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VINU RAVEENDRAN
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