Intergranular Corrosion Testing for Cast, Bar and Forge Materials
Intergranular Corrosion Testing for Cast, Bar and Forge Materials
(OP)
We have an Alloy 825 valve. Our client has asked for IGC testing of all Alloy 825 materials in the valve.
However MESC SPE 76/213 (Nickel Forged Alloys) and MESC 77/203 (Valve General Requirements) only tells about IGC of Forged Alloy 825.
They do not comment on the testing required for Cast and Bar ALloy 825 materials.
Vendor is requesting to accept the valve with IGC test of only forged parts and not for cast and bar parts.
Please advise if there is any code which talks about IGC requirement of Cast and Bar 825. Also comment if it affects whether the material is forged, cast or bar.
However MESC SPE 76/213 (Nickel Forged Alloys) and MESC 77/203 (Valve General Requirements) only tells about IGC of Forged Alloy 825.
They do not comment on the testing required for Cast and Bar ALloy 825 materials.
Vendor is requesting to accept the valve with IGC test of only forged parts and not for cast and bar parts.
Please advise if there is any code which talks about IGC requirement of Cast and Bar 825. Also comment if it affects whether the material is forged, cast or bar.





RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
Clearly, someone needs to provide a bit of clarification.
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
The valve datasheet additional specification also refers to above specification. I have reviewed all other specs mentioned in the valve datasheet but have not found anything about IGC test for cast and bar.
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
It just isn't required in the other product specifications.
One would (should) expect that all material of the same grade, regardless of process would meet the same metallurgical criteria.
If your client has this written into their spec, then price it in.
If they are asking after the fact, then well those horses have left the barn.
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Plymouth Tube
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials
RE: Intergranular Corrosion Testing for Cast, Bar and Forge Materials