G:\Government\Document Files\Handbook ... - Granta Design

3-356 ! ! %Specification ............ AMS 4126, MIL-A-22771, and QQ-A-367 MIL-A-22771 and QQ-A-367Form ....................Die forgingTemper .................. T6 b T652Thickness e 1.001- 2.001- 3.001-1.001-2.001- 3.001-, in. ...........1.000 2.0003.000 4.000 1.0002.0003.000 4.000Basis .................... A B A B A B S A B A B A B SMechanical Properties:F tu , ksi:L .....................T a ....................F ty , ksi:L .....................T a ....................F cy , ksi:L .....................ST ...................F su , ksi .................F bruc , ksi:(e/D = 1.5) ...........(e/D = 2.0) ...........F bryc , ksi:(e/D = 1.5) ...........(e/D = 2.0) ...........e, percent (S-basis):L .....................T a ....................E, 10 3 ksi ..............E c , 10 3 ksi ..............G, 10 3 ksi ..............µ .......................Physical Properties:, lb/in. 3 ...............C, K, and ............7571 d78...67...706845109140871007 ...3 ...6461 d67644310513583967471 d77...66...69674410813886997 ...3 ...6361 d66644310413382947470 d76...65...68664310613684977 ...3 ...6360 d6663421041338294737062606563421021318193727571 d78...67...676945109140871007 ...3 ...6460 d646543105135839610.010.43.80.330.101See Figure 3.7.4.07471 d77...66...66684410813886997 ...3 ...6360 d63654310413382947470 d76...65...65674310613684977 ...3 ...6359 d636442104133829473706259626442102131819372MIL-HDBK-5H1 December 1998a T indicates any grain direction not within ±15 of being parallel to the forging flow lines. F cy (T) values are based upon short transverse (ST) test data.b When die forgings are machined before heat treatment, the mechanical properties are applicable provided the as-forged thickness is not greater than twice the thickness at time of heattreatment.c Bearing values are “dry pin” values per Section 1.4.7.1.d Specification value. T tensile properties are presented on an S basis only.e Thickness at the time of heat treatment.