Bending of bars, mat. 7050T7451 or T63

[cri]

Hallo

we need to bend bars (150x80) 5mt long, mat. 7050T7451 or T63, according to AMS 4108.

Does anybody know max temperature and parameters(holding time..) of the subsequent heat treatment to reduce stresses induced by bending?

Thanks a lot in advance for any information you might supply

 

[CoryPad]

An estimate for this would be 1-2 hours at 175-200 [ignore]°[ignore]C.