reverman
Mechanical
- Jul 22, 2008
- 142
Did anybody attend any of the meetings?
I'm just wondering why the cast grade of 316L (A351 CF3M) and 304L (A351 CF3) moved tables and now have rated pressures significantly lower than 316 (A351 CF8M) and 304 (A351 CF8).
Both materials have identical physical property requirements. The only difference is the lower carbon content on the L grades. Per ASTM A351 you could certify all the L grade as the straight grade since there is not a minimum carbon content for the straight grade. So I see no reason for the change. The old revisions had a clause limiting the temperature on the L grade which seems fine to me.
I'm just wondering why the cast grade of 316L (A351 CF3M) and 304L (A351 CF3) moved tables and now have rated pressures significantly lower than 316 (A351 CF8M) and 304 (A351 CF8).
Both materials have identical physical property requirements. The only difference is the lower carbon content on the L grades. Per ASTM A351 you could certify all the L grade as the straight grade since there is not a minimum carbon content for the straight grade. So I see no reason for the change. The old revisions had a clause limiting the temperature on the L grade which seems fine to me.