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ASME SA 240 Mat'l Identification

ASME SA 240 Mat'l Identification

ASME SA 240 Mat'l Identification

I have been trying to identify the material used on one of our applications.  I have found the material stamp and its manufacturer.  The material does not have an AISI number that I have found though ASME, but I did find a material in SA-240 of Section II that has the exact composition.  The AISI UNS# is S43940 and it has an EN#1.4509.  Another European company, is saying that there is an AISI # 441 for this same material, but this is the only reference to this AISI#441 that I have found.  Can I determine from the SA-240 chemical composition match that it is an acceptable material?  I believe that is the case, but please give me your input.  Please advise.


RE: ASME SA 240 Mat'l Identification

If you have the material stamped with an SA 240 UNS number this is sufficient for identification purposes.  

RE: ASME SA 240 Mat'l Identification

Basically, I have a metal part that was made in Europe.  The only part of the metal ID stamping I can make out is "1.4509", which is an EN identification.  I am trying to decide if this material complies with ASME Section II, SA-240 for sheet.  The "1.4509" chemical composition matches the S43940 composition in SA 240.  Is this enough to say the material complies?  This is first time I have dealt with the ASME code, and I guess the interpretation is not so clear.   

RE: ASME SA 240 Mat'l Identification

I now understand your OP. You would need to have this material certified for use under ASME B&PV Code. There are provisions for doing this, it depends on which part of the B&PV Code of construction you are following. If it is Section VIII, Div 1, there are rules for certification of material that is supplied under a UNS designation, but not an SA specification.

RE: ASME SA 240 Mat'l Identification

Thanks for the valuable information.  I will take it from here, and this gives me a good start.

RE: ASME SA 240 Mat'l Identification

The chemistry may match, but does it have the correct thermo-mechanical history?
At least you have a place to start now.

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