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308.0 Aluminum vs. 712.0 Aluminum

Both 308.0 aluminum and 712.0 aluminum are aluminum alloys. They have 90% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 308.0 aluminum and the bottom bar is 712.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
75 to 90
Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 2.0
4.5 to 4.7
Fatigue Strength, MPa 89
140 to 180
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
27
Shear Strength, MPa 150
180
Tensile Strength: Ultimate (UTS), MPa 190
250 to 260
Tensile Strength: Yield (Proof), MPa 110
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 470
380
Maximum Temperature: Mechanical, °C 170
190
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 540
610
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 140
160
Thermal Expansion, µm/m-K 20
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
40
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.9
3.0
Embodied Carbon, kg CO2/kg material 7.7
8.0
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1080
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3
11
Resilience: Unit (Modulus of Resilience), kJ/m3 83
240 to 270
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
46
Strength to Weight: Axial, points 18
24 to 25
Strength to Weight: Bending, points 25
30 to 31
Thermal Diffusivity, mm2/s 55
62
Thermal Shock Resistance, points 9.2
11

Alloy Composition

Aluminum (Al), % 85.7 to 91
90.7 to 94
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 4.0 to 5.0
0 to 0.25
Iron (Fe), % 0 to 1.0
0 to 0.5
Magnesium (Mg), % 0 to 0.1
0.5 to 0.65
Manganese (Mn), % 0 to 0.5
0 to 0.1
Silicon (Si), % 5.0 to 6.0
0 to 0.3
Titanium (Ti), % 0 to 0.25
0.15 to 0.25
Zinc (Zn), % 0 to 1.0
5.0 to 6.5
Residuals, % 0
0 to 0.2