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707.0-T7 Aluminum vs. A390.0-T7 Aluminum

Both 707.0-T7 aluminum and A390.0-T7 aluminum are aluminum alloys. Both are furnished in the T7 temper. They have 79% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 707.0-T7 aluminum and the bottom bar is A390.0-T7 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
120
Elastic (Young's, Tensile) Modulus, GPa 70
75
Elongation at Break, % 1.7
0.87
Fatigue Strength, MPa 83
100
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Tensile Strength: Ultimate (UTS), MPa 300
260
Tensile Strength: Yield (Proof), MPa 250
260

Thermal Properties

Latent Heat of Fusion, J/g 380
640
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 630
580
Melting Onset (Solidus), °C 600
480
Specific Heat Capacity, J/kg-K 880
880
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
20
Electrical Conductivity: Equal Weight (Specific), % IACS 110
67

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.3
7.3
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1140
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.7
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 430
440
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
52
Strength to Weight: Axial, points 29
26
Strength to Weight: Bending, points 34
33
Thermal Diffusivity, mm2/s 58
56
Thermal Shock Resistance, points 13
12

Alloy Composition

Aluminum (Al), % 90.5 to 93.6
75.3 to 79.6
Chromium (Cr), % 0.2 to 0.4
0
Copper (Cu), % 0 to 0.2
4.0 to 5.0
Iron (Fe), % 0 to 0.8
0 to 0.5
Magnesium (Mg), % 1.8 to 2.4
0.45 to 0.65
Manganese (Mn), % 0.4 to 0.6
0 to 0.1
Silicon (Si), % 0 to 0.2
16 to 18
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 4.0 to 4.5
0 to 0.1
Residuals, % 0
0 to 0.2