Can anyone tell me how A574 compares to B7 with regard to high temperature applications? My situation is that a B7 Socket Head Cap Screw (3/4"-10 X 3") was sheared during removal. Our vendor does not have any of these in B7, but assures me that A574 will perform just as well under my high temperature application. I can see that the A574 has higher Tensile Strength, Yield, And Hardness qualities, but I am still concerned about the temperature, which is nominal 800 Deg F. I have not been able to find any data to support the supposition that A574 will perform at this temperature range.
TIA
TIA