×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

SA 516-60 Impact test requirements
3

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

RE: SA 516-60 Impact test requirements

If you order A 516 60 you have several options:
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

gr2vessels;
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

gr2vessels, if 18 is the average it meets UG-84 at your temperature, provided no one specimen is less than 12. Unless your customer requires SA-20 S5, your plate is acceptable.

Regards,

Mike

RE: SA 516-60 Impact test requirements

(OP)
Thank you Gentleman,

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

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources