Impact test for SA516Gr60N as per SA20
Impact test for SA516Gr60N as per SA20
(OP)
We are purchasing plates in SA516Gr60N with thicknes = 1/3" (8.5mm) and 1" (25mm).
I received material certifcats and I'm suprised because :
- for plate thk=1" => impact tes at -51°C (-60°F) according to SA20 table A2.15 = no problem
- for plate thk = 1/3" (8.5mm) => impact test at -20°C (-4°F) ??
I did find any deviation/ exclusion,... in SA20 to perfom impact test at -20°C instead of -51°C. My understanding is it correct or is it able to perform impact test at -20° for thin plates ?? If yes, which chapter ??
Thank by advance
Regards
I received material certifcats and I'm suprised because :
- for plate thk=1" => impact tes at -51°C (-60°F) according to SA20 table A2.15 = no problem
- for plate thk = 1/3" (8.5mm) => impact test at -20°C (-4°F) ??
I did find any deviation/ exclusion,... in SA20 to perfom impact test at -20°C instead of -51°C. My understanding is it correct or is it able to perform impact test at -20° for thin plates ?? If yes, which chapter ??
Thank by advance
Regards





RE: Impact test for SA516Gr60N as per SA20
The requirements for impact testing of SA-516 plate used in pressure vessels designed per ASME VIII, Div. 1 are defined in UG-84 and UCS-66.
RE: Impact test for SA516Gr60N as per SA20
Are you sure regarding your interpretation?
RE: Impact test for SA516Gr60N as per SA20
Impact test will become mandatory for plate supplier only if you specify it in your purchase order.
If you are a pressure vessel fabricator it may become mandatory requirement for you depending on thickness and MDMT, see UCS-66 if your vessel is bulit to ASME Sec VIII Div.1. You will have to determine this before you order your plates.
Hope this does not confuse you, it is very simple just read ASME Sec II-A Spec for SA-516 & UCS-66.
RE: Impact test for SA516Gr60N as per SA20
It's very clear now.
Sorry, but English is not my mother language and I didn't want to have a wrong understanding.
regards
RE: Impact test for SA516Gr60N as per SA20
RE: Impact test for SA516Gr60N as per SA20
See ASME VIII Div.1 Table UG-84.2 for Charpy impact test temperature reduction for subsize
Consult your supplier too.
Regards
r6155