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.

The abbreviations AA7075 and Al-7075 in this article are the same material. Al-Aluminum; AA-Aluminum Alloy or The Aluminum Association.

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, %
StandardANSI Alloy (UNS)SiFe, ≤CuMn, ≤MgCrZn, ≤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)
0.400.501.2-2.00.302.1-2.90.18-0.285.1-6.10.200.05 (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 TemperDensity, g/cm3 (lb/in.3)Specific gravityMelting 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/sThermal conductivity, W/m·°C (Btu∙in/h∙ft2∙°F)Electrical conductivity, Equal volume (Equal weight), % IACSElectrical conductivity, Equal volume (Equal weight), MS/mElectrical resistivity, Ω·mm2/m (Ω·circ mil/ft)
7075-T62.81 (0.101)2.81477-638 (890-1175)960 (0.23) at 20 °C (68 °F)23.6 (13.1) at 20-100 °C (68-212 °F)48.36130 (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 TemperUltimate tensile strength, MPa (ksi)Yield strength, MPa (ksi)Elongation in 50 mm (2 in.), %, ≥Brinell Hardness, HB (500 kgf load 10mm ball)
1.6mm (1/16 in.) thick specimen12.5mm (1/2 in.) thick specimen
7075-O230 (33)105 (15)171460
AA 7075-T6, T651570 (83)505 (73)1111150
Alclad 7075-O220 (32)95 (14)17
Alclad 7075-T6, T651525 (76)460 (67)11
7075-T6 Aluminum Mechanical Properties, Not for Design, Part-2
Aluminum Alloy and TemperUltimate shear strength, MPa (ksi)Modulus of elasticity, GPa (106 psi)Fatigue endurance limit, MPa (ksi)
7075-O150 (22)72 (10.4)
7075-T6, T651330 (48)160 (23)
Alclad 7075-O150 (22)
Alclad 7075-T6, T651315 (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
StandardAluminum Alloy and TemperSpecified 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≤0.12440, ≤12.0
0.125-8.00010
7075-T6, T62≤ 0.1247766
0.125-4.00077667
7075-T651≤0.1247766
0.125-4.00077667
4.001-6.00075647
6.001-7.00073627
7075-T7351, T73≤ 0.12468
0.125-4.000685610
4.001-5.00066558
5.001-6.00064528
Aluminium Alloy 7075 Mechanical Properties – Extruded Bars, Rods, Wire, Profiles, and Tubes
StandardAluminum Alloy and TemperSpecified Diameter or Thickness, in.Area, in2Tensile 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-Oallall40, ≤24, ≤10
AA 7075-T6, T62, T6510, T6511≤ 0.249all78707
0.250-0.499all81737
0.500-1.499all81727
1.500-2.999all81727
3.000-4.499≤ 20
>20, ≤32
81
78
71
70
7
6
4.500-5.000≤3278686
AA 7075-T73, T73510, T735110.062-0.249≤ 2068587
0.250-1.499≤ 2570618
1.500-2.999≤ 2569598
3.000-4.499≤ 20
>20, ≤32
68.0
65.0
57.0
55.0
7
7
AA-7075-T76, T76510, T76511≤ 0.049all73637
0.050-0.124all7464
0.125-0.249≤207464
0.250-0.499≤207565
0.500-1.000≤207565
1.001-2.000≤207565
2.001-3.000≤207464
3.001-4.000≤207463
AA 7075 Aluminum Mechanical Properties – Drawn Seamless TubesElongation in 2 in. or 4xDiameter, ≥, %
StandardAluminum Alloy and TemperSpecified Diameter or Thickness, in.Tensile Strength, ksi, ≥ (unless otherwise specified)Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified)Full-Section SpecimenCut-Out Specimen
ASTM B210
SAE AMS-WW-T-700/7
7075-O0.025-0.04940, ≤21, ≤108
0.050-0.50040,≤21, ≤1210
7075-T6, T620.025-0.259776687
0.260-0.500776698
Aluminium 7075 Mechanical Properties – Plate and Sheet
StandardAluminium Alloy and TemperSpecified 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-O0.015-0.02040, ≤21,≤101
0.021-0.0622
0.063-0.0913
0.092-0.1254
0.126-0.2495
0.250-0.4996
0.500-2.000
7075-T6, T620.008-0.01174.063.057
0.012-0.02076.067.087
0.021-0.03976.067.088
0.040-0.06278.068.098
0.063-0.09178.068.099
0.092-0.12578.068.0910
0.126-0.18779.069.0911
0.188-0.24980.069.0911
7075 T651, T620.250-0.49978.067.0914
0.500-1.00078.068.07
1.001-2.00077.067.06
2.001-2.50076.064.05
2.501-3.00072.061.05
3.001-3.50071.058.05
3.501-4.00067.054.03
7075 T73 sheet0.040-0.24967.056.08
AA-7075 T7351 plate0.250-1.00069.057.07
1.001-2.00069.057.06
2.001-2.50066.052.06
2.501-3.00064.049.06
3.001-3.50063.049.06
3.501-4.00061.048.06
7075-T76 sheet0.063-0.12573.062.08
0.126-0.24973.062.08
7075-T7651 plate0.250-0.49972.061.08
0.500-1.00071.060.06
1.001-2.00071.060.05
7075 F0.250-4.000
Alclad 7075-O0.008-0.01436.0, ≤20.0,≤91
0.015-0.03236.0, ≤20.0,≤101
0.033-0.06236.0, ≤20.0,≤102
0.063-0.12538, ≤20.0,≤103
0.126-0.18738, ≤20.0,≤104
0.188-0.24939, ≤21.0,≤104
0.250-0.49939, ≤21.0,≤106
0.500-1.00040, ≤10
Alclad 7075-T6, T620.008-0.01168.058.056
0.012-0.02071.061.086
0.021-0.03971.061.087
0.040-0.06272.062.097
0.063-0.09174.064.098
0.092-0.12574.064.099
0.126-0.18774.064.0910
0.188-0.24976.065.0910
Alclad 7075-T651, T620.250-0.49975.065.0912
0.500-1.00078.068.07
1.001-2.00077.067.06
2.001-2.50076.064.05
2.501-3.00072.061.05
3.001-3.50071.058.05
3.501-4.00067.054.03
Alclad 7075 T76 sheet0.040-0.06267.056.08
0.063-0.12568.057.08
0.126-0.18768.057.08
0.188-0.24970.059.08
Alclad 7075 T7651 plate0.250-0.49969.058.08
0.500-1.00071.060.06
Alclad 7075 F0.250-4.000
Alclad 7075-O, 1-Side0.015-0.03238.0, ≤21.0,≤101
0.033-0.06238.0, ≤21.0,≤102
0.063-0.12539.0, ≤21.0,≤103
0.092-0.12539.0, ≤21.0,≤104
0.126-0.18739.0, ≤21.0,≤105
0.188-0.24939.0, ≤21.0,≤105
0.250-0.49939.0, ≤21.0,≤106
0.500-1.00040, ≤10
Alclad 7075-T6, T62, 1-Side0.008-0.01171.0605
0.012-0.02074.0648
0.015-0.03274.06487
0.033-0.0374.06488
0.040-0.06275.06598
0.063-0.09176.06699
0.092-0.12576.066910
0.126-0.18777.067911
0.188-0.2497867911
Alclad 7075-T651, T62, 1-Side0.250-0.49976.066.0913
0.500-1.00078.068.07
1.001-2.00077.067.06
Alclad 7075 F, 1-Side0.250-2.000

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
USISOEuropean UnionGermanyJapanAustralia and New ZealandChina
StandardAISI (UNS)StandardDesignationStandardNumerical (Chemical symbols)StandardDesignation (Material number)StandardGradeStandardDesignationStandardGrade
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 209AW-7075EN 573-3EN AW-7075
(EN AW-AlZn5,5MgCu)
DIN 1725-1AlZnMgCu1,5 (3.4365)JIS H4000;
JIS H4040
7075AS 2848.1,
AS/NZS 1734,
AS/NZS 1865,
AS/NZS 1866
7075GB/T 3190;
GB/T 3880.2
7075

Related materials: 6061 Aluminum Properties, Aluminum Weight Calculator, Density of Aluminum

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