Table 3.7.5.0: (b) Design Mechanical and Physical Properties of 7055-T74511 Aluminum Alloy Extrusions

MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

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Specification	AMS 4324
Form	Extrusion
Temper	T74511
Thickness, in.	≤ 0.249		0.250-0.499		0.500-3.000
Basis	A	B	A	B	A	B
Mechanical Properties:
F_tu, ksi:
L	83	84	84	85	85^a	87
LT	78	79	79	80	80	82
F_ty, ksi:
L	76	78	77	79	78^a	80
LT	72	74	73	75	74	76
F_cy, ksi:
L	76	78	77	79	78	80
LT	77	79	78	80	79	81
F_su^b ksi	43	44	46	45	45	46
F_bru^c ksi:
(e/D = 1.5)	115	116	116	117	117	120
(e/D = 2.0)	151	152	152	154	154	158
F_bry^c ksi:
(e/D = 1.5)	96	99	97	100	99	101
(e/D = 2.0)	114	117	116	119	117	120
e, percent (S-basis):
L	8		8		8
LT
E, 10³ ksi	10.3
E_c, 10³ ksi	10.7
G, 10³ ksi	3.9
μ	0.33
Physical Properties:
ω, lb/in.³	0.103
C, Btu/(lb)(°F)
K, Btu/[(hr)(ft²)(°F)/ft]
α, 10^-6 in./in./°F

MIL-HDBK-5J

31 January 2003

3.7.5.0 (c) Design Mechanical and Physical Properties of 7055-T76511 Aluminum Alloy Extrusions

Specification	AMS 4336
Form	Extrusion
Temper	T76511
Thickness, in.	≤ 0.249			0.250-0.499
Basis	A	B		A	B
Mechanical Properties:
F_tu, ksi:
L	89^a	91		90	94
LT	83	85		84	87
F_ty, ksi:
L	85	87		85	91
LT	79	81		79	85
F_cy, ksi:
L	84	86		85	91
LT	86	88		86	92
F_su^b ksi	46	47		47	49
F_bru^c ksi:
(e/D = 1.5)	122	125		124	129
(e/D = 2.0)	160	163		161	169
F_bry^c ksi:
(e/D = 1.5)	105	107		105	112
(e/D = 2.0)	124	127		124	132
e, percent (S-basis):
L	7			9
LT
E, 10³ ksi	10.4
E_c, 10³ ksi			10.8
G, 10³ ksi	3.9
μ	0.33
Physical Properties:
ω, lb/in.³	0.103
C, Btu/(lb)(°F)
K, Btu/[(hr)(ft²)(°F)/ft]
α, 10^-6 in./in./°F

MIL-HDBK-5J

3.7.5.0 (e) Design Mechanical and Physical Properties of 7055-T77511 Aluminum Alloy Extrusion

Specification	AMS 4337
Form	Extrusion
Cross-sectional area, in.²
Temper	T77511
Thickness, in.	0.500 - 1.500
Basis	A		B
Mechanical Properties:
F_tu ksi:
L	94		95
LT	88		90
F_ty ksi:
L	90		93
LT	84^a		88
F_cy ksi:
L	92		94
LT	89		92
F_su^b ksi	48		49
F_bru^c ksi:
(e/D= 1.5)	128		131
(e/D = 2.0)	167		169
F_bry^c ksi:
(e/D= 1.5)	109		113
(e/D = 2.0)	131		135
e, percent (S-basis):
L	9
LT	5
E, 10³ ksi	10.4
E_c, 10³ ksi	11.0
G, 10³ ksi
μ	0.33
Physical Properties:
ω, lb/in.³	0.103
C, Btu/(lb)(°F)
K, Btu/[(hr)(ft²)(°F)/ft]
α, 10^-6 in./in./°F

MIL-HDBK-5J