EN 10204 certificate 3.1 ?
EN 10204 certificate 3.1 ?
(OP)
Hi,
I have a supplier delivering a rough forging with a 3.1 certificate. However, only chemical analysis has been performed; for mechanical values the certificate only mentions the min/max values.
EN10204 isn't 100% clear on what is obligatory to include in a 3.1. Is this supplier allowed to state "3.1" on the certificate when many tests have not been performed at all?
I have a supplier delivering a rough forging with a 3.1 certificate. However, only chemical analysis has been performed; for mechanical values the certificate only mentions the min/max values.
EN10204 isn't 100% clear on what is obligatory to include in a 3.1. Is this supplier allowed to state "3.1" on the certificate when many tests have not been performed at all?





RE: EN 10204 certificate 3.1 ?
If you e.g. buy a forging to ASTM A182, then that standard lists all values that need to be declared. Did you purchase the forging to a certain standard or spec which requires the manufacturer to declare test results acc. that spec or standard?
Or did you by just a forging, with nothing specified?
RE: EN 10204 certificate 3.1 ?
The forging was bought to be an SA336M. What I don't know, is the additional purchase specifications. There's a confusing "and/or" in EN10204; is it possible that the order or additional specs state that only chemical tests should be performed? Ofcourse that's possible, but i mean: in that case, is the supplier allowed to call it a 3.1?
RE: EN 10204 certificate 3.1 ?
From there on you can determine what would be required per the EN standard and ASTM standard.
EN 10204 specifies for 3.1 certificates;
RE: EN 10204 certificate 3.1 ?
I did review EN10204, but it's exactly this sentence that I find unclear:
Especially the "and/or" at the end. Is it either the product specification, OR the order (even if the order specifies less tests than the spec.)? Or is it: all tests required by the product specification, AND additional tests specified in the order (so tests in the product spec. are the minimum required for a 3.1)?
As for SA336M, both chemical and mechanical tests are specified, as is always the case.
RE: EN 10204 certificate 3.1 ?
RE: EN 10204 certificate 3.1 ?
Imagine this:
I order a bloom in SA336M, but I state in my order that only chemical analysis interests me and no mechanical testing needs to be performed. Reason is that I will further process the bloom by forging, thereby changing its mechanical properties anyway. Mechanical tests will be performed by us after forging (us or our contracted labo).
Can the supplier of the bloom deliver a 3.1 certificate with only chemical analysis as specific test result? Or does he have to issue a 2.2 certificate because mechanical testing as per SA336M is missing?
I hope this makes sense.
RE: EN 10204 certificate 3.1 ?
RE: EN 10204 certificate 3.1 ?
The only other I see which you could try, is to specify all contents (like manufacture, heat treatment, chem. analysis, marking, et.c) of SA366M, but dont mention the mechanical values.
RE: EN 10204 certificate 3.1 ?
I'm a NoBo, I have in my possession a 3.1 certificate without mechanical values, but wíth SA336M reference. Now for this situation, I can imagine mech. values are less important, as it will be reforged. I'm not sure whether it is "legal" to declare it as a 3.1.
Anyway, all this just to say i'm not a cheapass purchaser that's trying to save money on certificates :D
RE: EN 10204 certificate 3.1 ?
What if the material has had a heat treatment that was so rubbish (even though it meets chemeical analysis) that any subsequent processing cant make up for it anymore? How are you than later going to finish this part?
RE: EN 10204 certificate 3.1 ?
I'd be happy to save the hassle and just reject the certificate, but I would really like to know what are the grounds for rejection. Where does it say that ALL tests as per SA336M have to be performed for a 3.1 to be valid?