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1070A Aluminum vs. 2117 Aluminum

Both 1070A aluminum and 2117 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is 1070A aluminum and the bottom bar is 2117 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 18 to 40
70
Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 2.3 to 33
26
Fatigue Strength, MPa 17 to 51
95
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 44 to 81
200
Tensile Strength: Ultimate (UTS), MPa 68 to 140
300
Tensile Strength: Yield (Proof), MPa 17 to 120
170

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 170
220
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 640
550
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 230
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
40
Electrical Conductivity: Equal Weight (Specific), % IACS 200
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.2
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1200
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.0 to 18
64
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 7.0 to 14
28
Strength to Weight: Bending, points 14 to 22
33
Thermal Diffusivity, mm2/s 94
59
Thermal Shock Resistance, points 3.1 to 6.3
12

Alloy Composition


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Aluminum (Al), % 99.7 to 100
91 to 97.6
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.030
2.2 to 4.5
Iron (Fe), % 0 to 0.25
0 to 0.7
Magnesium (Mg), % 0 to 0.030
0.2 to 1.0
Manganese (Mn), % 0 to 0.030
0.4 to 1.0
Silicon (Si), % 0 to 0.2
0.2 to 0.8
Titanium (Ti), % 0 to 0.030
0 to 0.25
Zinc (Zn), % 0 to 0.070
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15