Ferrite Count 316ss ASTM E562
Ferrite Count 316ss ASTM E562
(OP)
If a ferrite count were to be conducted on a 316ss weld what would be the acceptance criteria for the parent metal, weld and HAZ?
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
www.waterhammer.bigblog.com.au
RE: Ferrite Count 316ss ASTM E562
Acceptance criteria for corrosion tests and ferrite content should be based on service application. I would go back and discuss with the Purchaser what their needs are and service duty.
RE: Ferrite Count 316ss ASTM E562
The base metal value should be low, limits of 0.5% are used in some process applications. In some cases 1% would not be bad.
I would expect the weld to be what ever the weld was designed to be. If the aim value was 4%, then 2-6% would be reasonable.
Why not measure magnetically?
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