Impact test results : SA20 vs UG84
Impact test results : SA20 vs UG84
(OP)
Hi,
I would like to get explanation regarding the following.
I have a pressure vessel in SA537 Class 2, wall thk = 60mm (2 23/64"), MDMT=-50°C (-58°F).
I shall perform impact tests (specific request from client) and I'm wondering what will be the minimum valeur on those tests.
According to SA20, table A2-15 the average acceptable value is 27J, but according to ASME VIII, Div 1, UG84, the average acceptable value is 42J
Somebody could explain please which is the correct minimum value and why I find difference between SA20 and UG84.
Thank by advance
I would like to get explanation regarding the following.
I have a pressure vessel in SA537 Class 2, wall thk = 60mm (2 23/64"), MDMT=-50°C (-58°F).
I shall perform impact tests (specific request from client) and I'm wondering what will be the minimum valeur on those tests.
According to SA20, table A2-15 the average acceptable value is 27J, but according to ASME VIII, Div 1, UG84, the average acceptable value is 42J
Somebody could explain please which is the correct minimum value and why I find difference between SA20 and UG84.
Thank by advance





RE: Impact test results : SA20 vs UG84
With that said, look at Figure UG-84.1 of ASME Section VIII, Div 1, for the specified minimum YS of SA 537 Class 2, the minimum CVN value is 20 ft-lbs or higher based on thickness and MDMT.
RE: Impact test results : SA20 vs UG84
it's more clear now. thank a lot
RE: Impact test results : SA20 vs UG84
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"