A514 / USS T-1 toughness
A514 / USS T-1 toughness
(OP)
Can anyone provide approximate or typical Charpy impact toughness results for A514 B / T-1 steel in temperature range of roughly about +32 to +70F. Thickness range about 1-2 inches. I have found information on transition temperatures but I need an estimate of Charpy ft-lbs for the approx. temperatures stated above. This for the structural version of T-1 and is NOT for the AR variety of T-1.
Thanks.
Thanks.





RE: A514 / USS T-1 toughness
Contact the folks at Mittal regarding this specific CVN impact data, see below
http://www.mittalsteel.com/Facilities/Americas/
RE: A514 / USS T-1 toughness
1. In the longitudinal direction at +32 to +80 degrees F, we would expect a minimum of 30 ft lbs.
2. There are special melt practices and other processes that could possible improve toughness.
There are different grades of "T-1" so there could be toughness differences related to those composition variations,too.
RE: A514 / USS T-1 toughness
Thanks for the information above. Are you sure about the minimum of 30 ft-lbs in the L (rolling) direction? Did you review specific CVN impact data with notch orientation relative to rolling direction?
I would have expected at least twice this value for the L orientation.
RE: A514 / USS T-1 toughness