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7050-T76511 Extrusion: MIL-HDBK-5J Design Allowables

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Material class	Aluminum
Alloy / temper / form	7050 / T76511 / Extrusion
Specifications	AMS 4340
Handbook	MIL-HDBK-5J, 31 January 2003, section 3.7.4.0, Table 3.7.4.0(e) (pdf page 331 of the chapter file)
Dimension bands	6
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		0.000–0.499 in		0.500–1.000 in	1.001–2.000 in	2.001–3.000 in	3.001–4.000 in	4.001–5.000 in
Specification		AMS 4340		AMS 4340	AMS 4340	AMS 4340	AMS 4340	AMS 4340
Basis		A	B	S	S	S	S	S
F_tu, ksi	L	77	79	79	79	79	79	79
F_tu, ksi	LT	76	78	77	75	73	71	68
F_ty, ksi	L	68	71	69	69	69	69	69
F_ty, ksi	LT	67	69	67	65	63	61	59
F_cy, ksi	L	68	71	69	69	69	69	69
F_cy, ksi	LT	70	73	70	69	67	66	64
F_su, ksi	L	42	44	43	43	42	41	40
F_su, ksi	LT	42	44	43	43	42	41	40
F_bru (e/D = 1.5), ksi	L	113	116	115	114	110	107	103
F_bru (e/D = 1.5), ksi	LT	113	116	115	114	110	107	103
F_bru (e/D = 2.0), ksi	L	147	151	150	148	144	140	136
F_bru (e/D = 2.0), ksi	LT	147	151	150	148	144	140	136
F_bry (e/D = 1.5), ksi	L	94	98	94	92	89	86	82
F_bry (e/D = 1.5), ksi	LT	94	98	94	92	89	86	82
F_bry (e/D = 2.0), ksi	L	109	114	110	108	104	98	93
F_bry (e/D = 2.0), ksi	LT	109	114	110	108	104	98	93
e, %	L	7	7	7	7	7	7	7
e, %	LT	…	…	…	…	…	…	…
E, Msi		10.3	10.3	10.3	10.3	10.3	10.3	10.3
E_c, Msi		10.7	10.7	10.7	10.7	10.7	10.7	10.7
G, Msi		3.9	3.9	3.9	3.9	3.9	3.9	3.9
ν		0.33	0.33	0.33	0.33	0.33	0.33	0.33
ρ, lb/in3		0.102	0.102	0.102	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-T74 Die forging (Table 3.7.4.0(c))
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))

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.