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7003 Aluminum vs. 1085 Aluminum

Both 7003 aluminum and 1085 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 7003 aluminum and the bottom bar is 1085 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
68
Elongation at Break, % 11
4.5 to 39
Fatigue Strength, MPa 130 to 150
22 to 49
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 210 to 230
48 to 79
Tensile Strength: Ultimate (UTS), MPa 350 to 390
73 to 140
Tensile Strength: Yield (Proof), MPa 300 to 310
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 510
640
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
230
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
61
Electrical Conductivity: Equal Weight (Specific), % IACS 110
200

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
4.8 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
2.1 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 33 to 37
7.5 to 14
Strength to Weight: Bending, points 37 to 40
14 to 22
Thermal Diffusivity, mm2/s 59
94
Thermal Shock Resistance, points 15 to 17
3.3 to 6.1

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
99.85 to 100
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.35
0 to 0.12
Magnesium (Mg), % 0.5 to 1.0
0 to 0.020
Manganese (Mn), % 0 to 0.3
0 to 0.020
Silicon (Si), % 0 to 0.3
0 to 0.1
Titanium (Ti), % 0 to 0.2
0 to 0.020
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 5.0 to 6.5
0 to 0.030
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0
0 to 0.010