Metallurgical specifications of Tubes of Aluminum alloy 7075

General Characteristics
The 7075 alloy offers the highest strength of the common screw machine alloys. The superior stress corrosion resistance of the T173 and T7351 tempers makes it a logical replacement for 2024, 2014 and 2017 in many critical applications. The T6 and T651 tempers have fair machinability, resistance welding and corrosion resistance ratings. This alloy is heavily utilized by the aircraft and ordnance industries given its superior strength.
Typical Chemical Composition

Other

Weight % Si Fe Cu Mn Mg Cr Zn Ti Each Total Aluminum

minimum — — 1.20 — 2.10 0.18 5.10 — — — Remainder

maximum 0.40 0.50 2.00 0.30 2.90 0.28 6.10 0.20 0.05 0.15

	Other
minimum	—	—	1.20	—	2.10	0.18	5.10	—	—	—	Remainder
maximum	0.40	0.50	2.00	0.30	2.90	0.28	6.10	0.20	0.05	0.15

Characteristics		English	Metric
Nominal density (68°F/20°C)		0.101 lbs/in³	2.80 Mg/m³
Melting range		990°F-1175°F	532°C-635°C
Coefficient of thermal expansion	Linear 68°F – 212°F 20°C – 100°C	13.0 micro in/in- °F	23.4 micro m/m- °K
Coefficient of thermal expansion	Volumetric 68°F / 20°C	3.78 x 10^-5 in.³/in.³– °F	68 x 10^-6 m³/m³– °K
Thermal conductivity (68°F/20°C)	T6, T651	75 BTU/ft- hr – °F	130 W/m – °K
Thermal conductivity (68°F/20°C)	T73, T7351	90 BTU/ft- hr – °F	155 W/m – °K
Electrical conductivity (68°F/20°C)	Equal Volume	T6, T651	33% IACS
	Equal Volume	T73, T7351	40% IACS
	Equal Weight	T6, T651	105% IACS

Temper	Tensile (0.500″ Dia. Specimen)					Hardness	Shear		Fatigue		Modulus
	Ultimate		Yield		Elongation/4D	Brinell 500 kg 10 mm	Ultimate shearing strength		Endurance limit-R.R.Moore type		Modulus of elasticity
	KSI	MPa	KSI	MPa	%		KSI	MPa	KSI	MPa	KSIx103	Gpa
O	33	228	15	103	17	60	22	152	—	—	10.3	71.0
T6, T651	83	572	73	503	11	150	48	331	23	158	10.3	71.0
T73, T7351	73	503	63	434	13	—	44	303	23	158	10.3	71.0

Specifications
- AMS – 4154, 4168, 4169, WW-A-700/7, QQ-A-200/11, ASTM – B221, B241
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Aluminum Alloy 7075