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357.0 Aluminum vs. 7020 Aluminum

Both 357.0 aluminum and 7020 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 357.0 aluminum and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95
45 to 100
Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 3.4
8.4 to 14
Fatigue Strength, MPa 76
110 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 200
110 to 230
Tensile Strength: Ultimate (UTS), MPa 350
190 to 390
Tensile Strength: Yield (Proof), MPa 300
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 500
380
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 620
650
Melting Onset (Solidus), °C 560
610
Specific Heat Capacity, J/kg-K 910
880
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 21
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
39
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.6
2.9
Embodied Carbon, kg CO2/kg material 8.0
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 620
110 to 690
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
47
Strength to Weight: Axial, points 38
18 to 37
Strength to Weight: Bending, points 43
25 to 41
Thermal Diffusivity, mm2/s 64
59
Thermal Shock Resistance, points 17
8.3 to 17

Alloy Composition

Aluminum (Al), % 91.3 to 93.1
91.2 to 94.8
Chromium (Cr), % 0
0.1 to 0.35
Copper (Cu), % 0 to 0.050
0 to 0.2
Iron (Fe), % 0 to 0.15
0 to 0.4
Magnesium (Mg), % 0.45 to 0.6
1.0 to 1.4
Manganese (Mn), % 0 to 0.030
0.050 to 0.5
Silicon (Si), % 6.5 to 7.5
0 to 0.35
Titanium (Ti), % 0 to 0.2
0 to 0.25
Zinc (Zn), % 0 to 0.050
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0
0 to 0.15