7075 Aluminum Alloy Properties, AA 7075-T6, T7351, T651, Density, Composition, Yield Strength (2024)

7075 Aluminum Alloy (7075-T6, 7075-T651, 7075-T7351, 7075-T73)

7075 aluminum alloy is a high-strength, heat-treatable wrought alloy developed by Alcoa in 1943. The alloy contains zinc, magnesium, chromium and copper as hardeners, as well as small amounts of iron, silicon, manganese and titanium. Al-7075 is much stronger than carbon steel after heat treatment. The tempered design include aluminum 7075-T6, T651, T7351, T73, T76, T7651, O, W, W51, etc.

Aluminum 7075 responds to age hardening heat treatment, resulting in extremely high mechanical properties. However, this alloy exhibits a certain degree of notch sensitivity. Material 7075 shows good formability in annealed and solution heat treated conditions at ambient temperature and in 7075-T6 conditions at elevated temperatures.

The 7075 alloy has good machinability in the annealed condition, little or no warping occurs during the age-hardening process. Its corrosion resistance is good and is further improved by heat treatment and aging. The alloy resists stress corrosion cracking in the 7075-T73 temper. Al-7075 can be resistance welded, but fusion welding is not generally recommended.

AA-7075 has various sizes and can be used for thin plates, strips, plates, bars, wires, seamless tubes, forgings, shapes and extrusions.

7075 Aluminum Properties

The following tables and lists summarize 7075 aluminum properties, datasheet and specs including chemical composition, physical properties and mechanical properties, welding, hardness, machinability, heat treating, etc.

Chemical Composition

Aluminium 7075 chemical composition is listed in the following table.

7075 Aluminum Chemical Composition, %
Standard	ANSI Alloy (UNS)	Si	Fe, ≤	Cu	Mn, ≤	Mg	Cr	Zn, ≤	Ti, ≤	Other Elements, Each (Total), ≤	Al
ASTM B209, ASTM B210, ASTM B211, ASTM B221, AMS-QQ-A-225/9, AMS-QQ-A-200/11, AMS-QQ-A-250/12, AMS-WW-T-700/7	7075 (UNS A97075)	0.40	0.50	1.2-2.0	0.30	2.1-2.9	0.18-0.28	5.1-6.1	0.20	0.05 (0.15)	Remainder

Notes (various standards of 7075 aluminum alloy):

ASTM B209: Aluminium and Aluminum-Alloy Sheet and Plate.
ASTM B210: Drawn Seamless Tubes.
ASTM B211: Rolled or Cold Finished Bar, Rod, and Wire.
ASTM B221: Extruded Bars, Rods, Wire, Profiles and Tubes.
AMS-QQ-A-225/9: Aluminium 7075, Bar, Rod, Wire, and Special Shapes; Rolled, Drawn, or Cold Finished
AMS-QQ-A-200/11: Al 7075, Bar, Rod, Shapes, Tube, and Wire, Extruded
AMS-QQ-A-250/12: AA 7075, Plate and Sheet
AMS-WW-T-700/7: Tube, Drawn, Seamless

Aluminium Alloy 7075 Physical Properties

Aluminium alloy 7075 physical properties are given in the following lists, including aluminum density, melting point, coefficient of thermal expansion, elastic modulus, thermal conductivity, specific heat capacity electrical conductivity, and electrical resistance.

Notes:

10^-6·K^-1 = 10^-6/K = 1 μm/m·°C
1 Ω·mm²/m = 1 μΩ·m
1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
1 GPa= 1 kN/mm2
1 MPa= 1 N/mm2
MS/m = 0.58⋅% IACS
1cal/(g.C) = 1Btu/(lb.F)

AA 7075 Aluminum Physical Properties
Alloy and Temper	Density, g/cm3 (lb/in.3)	Specific gravity	Melting point, °C (°F)	Specific heat capacity, J/kg·K (Btu/lb ·°F)	Coefficient of thermal expansion, 10-6/K (μin./in. ·°F)	Thermal diffusivity, mm2/s	Thermal conductivity, W/m·°C (Btu∙in/h∙ft2∙°F)	Electrical conductivity, Equal volume (Equal weight), % IACS	Electrical conductivity, Equal volume (Equal weight), MS/m	Electrical resistivity, Ω·mm2/m (Ω·circ mil/ft)
7075-T6	2.81 (0.101)	2.81	477-638 (890-1175)	960 (0.23) at 20 °C (68 °F)	23.6 (13.1) at 20-100 °C (68-212 °F)	48.36	130 (900) at 25 °C (77 °F)	33 (105) at 20 °C (68 °F)	19 (61) at 20 °C (68 °F)	0.0515 (31) at 20 °C (68 °F)

Notes:

The melting range shown applies to wrought products with a thickness of 6.35 mm (1/4 inch) or greater.
hom*ogenization may increase the eutectic melting temperature 10 to 20 °C, but usually does not eliminate eutectic melting.

7075 Aluminum Mechanical Properties

Aluminium 7075-T6 mechanical properties are listed in the following tables including yield strength (yield stress), ultimate tensile strength, shear strength, modulus of elasticity, young’s modulus, etc.

The following mechanical properties is the average value of various sizes, product forms and manufacturing methods, so the properties cannot be guaranteed. They are only used as a basis for comparing alloys and tempering, and should not be specified as engineering requirements or used for design purposes.

7075-T6 Aluminum Mechanical Properties, Not for Design, Part-1
Aluminum Alloy and Temper	Ultimate tensile strength, MPa (ksi)	Yield strength, MPa (ksi)	Elongation in 50 mm (2 in.), %, ≥		Brinell Hardness, HB (500 kgf load 10mm ball)
Aluminum Alloy and Temper	Ultimate tensile strength, MPa (ksi)	Yield strength, MPa (ksi)	1.6mm (1/16 in.) thick specimen	12.5mm (1/2 in.) thick specimen	Brinell Hardness, HB (500 kgf load 10mm ball)
7075-O	230 (33)	105 (15)	17	14	60
AA 7075-T6, T651	570 (83)	505 (73)	11	11	150
Alclad 7075-O	220 (32)	95 (14)	17	–	–
Alclad 7075-T6, T651	525 (76)	460 (67)	11	–	–

7075-T6 Aluminum Mechanical Properties, Not for Design, Part-2
Aluminum Alloy and Temper	Ultimate shear strength, MPa (ksi)	Modulus of elasticity, GPa (10⁶ psi)	Fatigue endurance limit, MPa (ksi)
7075-O	150 (22)	72 (10.4)	–
7075-T6, T651	330 (48)		160 (23)
Alclad 7075-O	150 (22)		–
Alclad 7075-T6, T651	315 (46)		–

Average value of tensile and compression modulus. The compressive modulus is approximately 2% higher than the tensile modulus (Young’s modulus).

Mechanical Properties of 7075-T6 Aluminum in SAE AMS and ASTM Standard

Aluminum 7075 Mechanical Properties – Rolled or Cold Finished Bar, Rod, and Wire
Standard	Aluminum Alloy and Temper	Specified Diameter or Thickness, in.	Tensile Strength, ksi, ≥ (unless otherwise specified)	Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified)	Elongation in 2 in. or 4xDiameter, ≥, %
ASTM B211 SAE AMS-QQ-A-225/9	7075-O	≤0.124	40, ≤	12.0	–
	7075-O	0.125-8.000	40, ≤	12.0	10
	7075-T6, T62	≤ 0.124	77	66	–
	7075-T6, T62	0.125-4.000	77	66	7
	7075-T651	≤0.124	77	66	–
		0.125-4.000	77	66	7
		4.001-6.000	75	64	7
		6.001-7.000	73	62	7
	7075-T7351, T73	≤ 0.124	68	–	–
		0.125-4.000	68	56	10
		4.001-5.000	66	55	8
		5.001-6.000	64	52	8

Aluminium Alloy 7075 Mechanical Properties – Extruded Bars, Rods, Wire, Profiles, and Tubes
Standard	Aluminum Alloy and Temper	Specified Diameter or Thickness, in.	Area, in2	Tensile Strength, ksi, ≥ (unless otherwise specified)	Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified)	Elongation in 2 in. or 4xDiameter, ≥, %
ASTM B221 SAE AMS-QQ-A-200/11	7075-O	all	all	40, ≤	24, ≤	10
	AA 7075-T6, T62, T6510, T6511	≤ 0.249	all	78	70	7
		0.250-0.499	all	81	73	7
		0.500-1.499	all	81	72	7
		1.500-2.999	all	81	72	7
		3.000-4.499	≤ 20 >20, ≤32	81 78	71 70	7 6
		4.500-5.000	≤32	78	68	6
	AA 7075-T73, T73510, T73511	0.062-0.249	≤ 20	68	58	7
		0.250-1.499	≤ 25	70	61	8
		1.500-2.999	≤ 25	69	59	8
		3.000-4.499	≤ 20 >20, ≤32	68.0 65.0	57.0 55.0	7 7
	AA-7075-T76, T76510, T76511	≤ 0.049	all	73	63	7
		0.050-0.124	all	74	64
		0.125-0.249	≤20	74	64
		0.250-0.499	≤20	75	65
		0.500-1.000	≤20	75	65
		1.001-2.000	≤20	75	65
		2.001-3.000	≤20	74	64
		3.001-4.000	≤20	74	63

AA 7075 Aluminum Mechanical Properties – Drawn Seamless Tubes					Elongation in 2 in. or 4xDiameter, ≥, %
Standard	Aluminum Alloy and Temper	Specified Diameter or Thickness, in.	Tensile Strength, ksi, ≥ (unless otherwise specified)	Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified)	Full-Section Specimen	Cut-Out Specimen
ASTM B210 SAE AMS-WW-T-700/7	7075-O	0.025-0.049	40, ≤	21, ≤	10	8
	7075-O	0.050-0.500	40,≤	21, ≤	12	10
	7075-T6, T62	0.025-0.259	77	66	8	7
	7075-T6, T62	0.260-0.500	77	66	9	8

Aluminium 7075 Mechanical Properties – Plate and Sheet
Standard	Aluminium Alloy and Temper	Specified Thickness, in.	Tensile Strength, ksi, ≥ (unless otherwise specified)	Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified)	Elongation in 2 in. or 4xDiameter, ≥, %	Bend Diameter Factor, N
ASTM B209 SAE AMS-QQ-A-250/12	7075-O	0.015-0.020	40, ≤	21,≤	10	1
		0.021-0.062				2
		0.063-0.091				3
		0.092-0.125				4
		0.126-0.249				5
		0.250-0.499				6
		0.500-2.000				–
	7075-T6, T62	0.008-0.011	74.0	63.0	5	7
		0.012-0.020	76.0	67.0	8	7
		0.021-0.039	76.0	67.0	8	8
		0.040-0.062	78.0	68.0	9	8
		0.063-0.091	78.0	68.0	9	9
		0.092-0.125	78.0	68.0	9	10
		0.126-0.187	79.0	69.0	9	11
		0.188-0.249	80.0	69.0	9	11
	7075 T651, T62	0.250-0.499	78.0	67.0	9	14
		0.500-1.000	78.0	68.0	7	–
		1.001-2.000	77.0	67.0	6	–
		2.001-2.500	76.0	64.0	5	–
		2.501-3.000	72.0	61.0	5	–
		3.001-3.500	71.0	58.0	5	–
		3.501-4.000	67.0	54.0	3	–
	7075 T73 sheet	0.040-0.249	67.0	56.0	8	–
	AA-7075 T7351 plate	0.250-1.000	69.0	57.0	7	–
		1.001-2.000	69.0	57.0	6	–
		2.001-2.500	66.0	52.0	6	–
		2.501-3.000	64.0	49.0	6	–
		3.001-3.500	63.0	49.0	6	–
		3.501-4.000	61.0	48.0	6	–
	7075-T76 sheet	0.063-0.125	73.0	62.0	8	–
	7075-T76 sheet	0.126-0.249	73.0	62.0	8	–
	7075-T7651 plate	0.250-0.499	72.0	61.0	8	–
		0.500-1.000	71.0	60.0	6	–
		1.001-2.000	71.0	60.0	5	–
	7075 F	0.250-4.000	–	–	–	–
	Alclad 7075-O	0.008-0.014	36.0, ≤	20.0,≤	9	1
		0.015-0.032	36.0, ≤	20.0,≤	10	1
		0.033-0.062	36.0, ≤	20.0,≤	10	2
		0.063-0.125	38, ≤	20.0,≤	10	3
		0.126-0.187	38, ≤	20.0,≤	10	4
		0.188-0.249	39, ≤	21.0,≤	10	4
		0.250-0.499	39, ≤	21.0,≤	10	6
		0.500-1.000	40, ≤	–	10	–
	Alclad 7075-T6, T62	0.008-0.011	68.0	58.0	5	6
		0.012-0.020	71.0	61.0	8	6
		0.021-0.039	71.0	61.0	8	7
		0.040-0.062	72.0	62.0	9	7
		0.063-0.091	74.0	64.0	9	8
		0.092-0.125	74.0	64.0	9	9
		0.126-0.187	74.0	64.0	9	10
		0.188-0.249	76.0	65.0	9	10
	Alclad 7075-T651, T62	0.250-0.499	75.0	65.0	9	12
		0.500-1.000	78.0	68.0	7	–
		1.001-2.000	77.0	67.0	6	–
		2.001-2.500	76.0	64.0	5	–
		2.501-3.000	72.0	61.0	5	–
		3.001-3.500	71.0	58.0	5	–
		3.501-4.000	67.0	54.0	3	–
	Alclad 7075 T76 sheet	0.040-0.062	67.0	56.0	8	–
		0.063-0.125	68.0	57.0	8	–
		0.126-0.187	68.0	57.0	8
		0.188-0.249	70.0	59.0	8
	Alclad 7075 T7651 plate	0.250-0.499	69.0	58.0	8	–
	Alclad 7075 T7651 plate	0.500-1.000	71.0	60.0	6	–
Alclad 7075 F	0.250-4.000	–	–	–	–
Alclad 7075-O, 1-Side	0.015-0.032	38.0, ≤	21.0,≤	10	1
	0.033-0.062	38.0, ≤	21.0,≤	10	2
	0.063-0.125	39.0, ≤	21.0,≤	10	3
	0.092-0.125	39.0, ≤	21.0,≤	10	4
	0.126-0.187	39.0, ≤	21.0,≤	10	5
	0.188-0.249	39.0, ≤	21.0,≤	10	5
	0.250-0.499	39.0, ≤	21.0,≤	10	6
	0.500-1.000	40, ≤	–	10	–
Alclad 7075-T6, T62, 1-Side	0.008-0.011	71.0	60	5	–
	0.012-0.020	74.0	64	8	–
	0.015-0.032	74.0	64	8	7
	0.033-0.03	74.0	64	8	8
	0.040-0.062	75.0	65	9	8
	0.063-0.091	76.0	66	9	9
	0.092-0.125	76.0	66	9	10
	0.126-0.187	77.0	67	9	11
	0.188-0.249	78	67	9	11
Alclad 7075-T651, T62, 1-Side	0.250-0.499	76.0	66.0	9	13
	0.500-1.000	78.0	68.0	7	–
	1.001-2.000	77.0	67.0	6	–
Alclad 7075 F, 1-Side	0.250-2.000	–	–	–	–

Applications of Alloy 7075

Typical applications of alloy 7075 are aircraft structures, piping systems, mobile equipment and high-pressure hydraulics, blow molds, ultrasonic plastic welding molds, shoe molds, paper molds, foam molds, dewaxing molds, jigs, mold machining, high-end aluminum alloy bicycle frames, etc .

7075 Aluminium Alloy Equivalent Material

Aluminum alloy 7075 equivalent to European EN (German DIN EN, British BSI EN, France NF EN), ISO, Japanese JIS and Chinese GB standard (for reference).

Notes: DIN 1725-1 has been replaced by DIN EN 573-3.

7075 Aluminium Alloy Equivalent

ISO

European Union

Germany

Japan

Australia and New Zealand

China

Standard

AISI (UNS)

Standard

Designation

Standard

Numerical (Chemical symbols)

Standard

Designation (Material number)

Standard

Grade

Standard

Designation

Standard

Grade

ASTM B209,
ASTM B210,
ASTM B211,
ASTM B221,
AMS-QQ-A-225/9,
AMS-QQ-A-200/11,
AMS-QQ-A-250/12,
AMS-WW-T-700/7

7075 (UNS A97075)

ISO 209

AW-7075

EN 573-3

EN AW-7075
(EN AW-AlZn5,5MgCu)

DIN 1725-1

AlZnMgCu1,5 (3.4365)

JIS H4000;
JIS H4040

7075

AS 2848.1,
AS/NZS 1734,
AS/NZS 1865,
AS/NZS 1866

7075

GB/T 3190;
GB/T 3880.2

7075

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