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7050-T74 Die forging: MIL-HDBK-5J Design Allowables

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Material class	Aluminum
Alloy / temper / form	7050 / T74 / Die forging
Specifications	AMS 4107 and AMS-A-22771
Handbook	MIL-HDBK-5J, 31 January 2003, section 3.7.4.0, Table 3.7.4.0(c) (pdf page 326 of the chapter file)
Dimension bands	4
Density	0.102 lb/in3

Design Mechanical and Physical Properties (room temperature)

As printed in the handbook table. Bases: A and B are statistical minimums (99 % and 90 % probability at 95 % confidence), S the specification minimum. Grain directions: L longitudinal, LT long transverse, ST short transverse.

Dimension band		0–2 in	2.001–4.000 in	4.001–5.000 in	5.001–6.000 in
Specification		AMS 4107 and AMS-A-22771	AMS 4107 and AMS-A-22771	AMS 4107 and AMS-A-22771	AMS 4107 and AMS-A-22771
Basis		S	S	S	S
F_tu, ksi	L	72	71	70	70
	LT	68	67	66	66
	ST	…	…	…	…
F_ty, ksi	L	62	61	60	59
	LT	56	55	54	54
	ST	…	…	…	…
F_cy, ksi	L	63	63	63	62
	LT	…	…	…	…
	ST	60	59	58	57
F_su, ksi	L	42	42	41	41
	LT	42	42	41	41
	ST	42	42	41	41
F_bru (e/D = 1.5), ksi	L	99	98	97	97
	LT	99	98	97	97
	ST	99	98	97	97
F_bru (e/D = 2.0), ksi	L	131	129	127	127
	LT	131	129	127	127
	ST	131	129	127	127
F_bry (e/D = 1.5), ksi	L	82	81	78	78
	LT	82	81	78	78
	ST	82	81	78	78
F_bry (e/D = 2.0), ksi	L	96	95	92	92
	LT	96	95	92	92
	ST	96	95	92	92
e, %	L	7	7	7	7
	LT	5	4	3	3
	ST	…	…	…	…
E, Msi		10.2	10.2	10.2	10.2
E_c, Msi		10.7	10.7	10.7	10.7
G, Msi		3.9	3.9	3.9	3.9
ν		0.33	0.33	0.33	0.33
ρ, lb/in3		0.102	0.102	0.102	0.102

Effect of Temperature

The handbook maps no temperature-effect figure to this table.

Other 7050 Tables

7050-T73511 Extrusion (Table 3.7.4.0(e))
7050-T7451 Plate (Table 3.7.4.0(b))
7050-T74511 Extrusion (Table 3.7.4.0(e))
7050-T7452 Die forgings (Table 3.7.4.0(c))
7050-T7452 Hand Forging (Table 3.7.4.0(d))
7050-T7651 Plate (Table 3.7.4.0(b))
7050-T76511 Extrusion (Table 3.7.4.0(e))

Source and Use

U.S. Department of Defense (2003). Metallic Materials and Elements for Aerospace Vehicle Structures. MIL-HDBK-5J, 31 January 2003 (public domain). The values are the handbook's design allowables as extracted from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ. No warranty is given.