SA 516-60 Impact test requirements
SA 516-60 Impact test requirements
(OP)
Our supplier is offering 6" plate with the following impact test: 18 (12) ft-lbf tested at -40 deg C (- 40 deg F). We all know that SA 20 requires 13 (10 )ft-lbf at -46 deg C (-50 deg F).
I don't believe that their offer at -40 deg F is equivalent of the values listed in SA 20 for - 50 deg F.
Would you please advise, am I wrong?
gr2vessels
I don't believe that their offer at -40 deg F is equivalent of the values listed in SA 20 for - 50 deg F.
Would you please advise, am I wrong?
gr2vessels





RE: SA 516-60 Impact test requirements
1. Just order A 516 60 without A20 S5. In that case no impact testing required.
2. Order with S5 and specify the required test temperature yourself .(Could be higher or lower than -46 C)
3 Order S5 without specifying the test temperature , in that case it will be tested at - 46 C or lower.
RE: SA 516-60 Impact test requirements
I am sorry but I have a hard time following your post with mixed units, and number of impact specimens. What is your plate thickness, 6"? I reviewed SA 20, Table A.15, and the CVN requirements to me are clear regarding testing one specimen or an average of three impact specimens.
RE: SA 516-60 Impact test requirements
Regards,
Mike
RE: SA 516-60 Impact test requirements
I have indeed requested the -50 deg F testing temperature, but I can accept the -40 deg F testing temperature on the basis of table UG 84.4, Note 1. That is, the absorbed energy values tested at -40 deg F are acceptable and in accordance with ASME SA 20, Table A1.15.
Great relief for the project schedule! Thanks again for the help.
Cheers,
gr2vessels