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712.0 Aluminum vs. ASTM A302 Alloy Steel

712.0 aluminum belongs to the aluminum alloys classification, while ASTM A302 alloy steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 712.0 aluminum and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 4.5 to 4.7
20 to 23
Fatigue Strength, MPa 140 to 180
250 to 280
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 180
370 to 390
Tensile Strength: Ultimate (UTS), MPa 250 to 260
590 to 620
Tensile Strength: Yield (Proof), MPa 180 to 200
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 190
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 610
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 160
39 to 51
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4 to 3.0
Density, g/cm3 3.0
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 8.0
1.5 to 1.6
Embodied Energy, MJ/kg 150
20 to 21
Embodied Water, L/kg 1140
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 270
330 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 24 to 25
21 to 22
Strength to Weight: Bending, points 30 to 31
20 to 21
Thermal Diffusivity, mm2/s 62
10 to 14
Thermal Shock Resistance, points 11
17 to 18