ACID ETCHING 300 Series Stainless Steel
ACID ETCHING 300 Series Stainless Steel
(OP)
thread177-122890: Standard for Acid Etch of High Temp Steel
I have performed Nital/Ammonium Persulfate acid etching on Carbon Steels to verify removal of Arc Burns per ASME B31.4 and B31.8, but have never applied this technique to Stainless. Are these solutions detrimental to Austenitic Stainless such as 304 and 316L or would this be an appropriate technique?
Any help would be great.
Thanks!
David.Blosser@kinetic-solutions-llc.com
www.kinetic-solutions-llc.com
I have performed Nital/Ammonium Persulfate acid etching on Carbon Steels to verify removal of Arc Burns per ASME B31.4 and B31.8, but have never applied this technique to Stainless. Are these solutions detrimental to Austenitic Stainless such as 304 and 316L or would this be an appropriate technique?
Any help would be great.
Thanks!
David.Blosser@kinetic-solutions-llc.com
www.kinetic-solutions-llc.com





RE: ACID ETCHING 300 Series Stainless Steel
RE: ACID ETCHING 300 Series Stainless Steel
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RE: ACID ETCHING 300 Series Stainless Steel
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Revision / Edition: 03A Chg: W/ REAP Date: 00/00/11
STANDARD TERMINOLOGY OF SYMBOLS AND DEFINITIONS RELATING TO MAGNETIC TESTING
Is this the document to which you were referring?
Not sure how it applies to etching. What am I missing here?
RE: ACID ETCHING 300 Series Stainless Steel
Thank you.
David.Blosser@kinetic-solutions-llc.com
RE: ACID ETCHING 300 Series Stainless Steel
RE: ACID ETCHING 300 Series Stainless Steel
See below;
http://www.metallographic.com/Etchants/Stainless%2...
http://books.google.com/books?id=OrlG98AHdoAC&...
RE: ACID ETCHING 300 Series Stainless Steel
Then as a first pass use 10% oxalic electro etch.
The need for other etchants then really depends on what phases you are looking for.
I have entire books on this subject.
Start with the ASM handbook and work from there.
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