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ASTM A732 Cast Steel vs. 515.0 Aluminum

ASTM A732 cast steel belongs to the iron alloys classification, while 515.0 aluminum belongs to the aluminum alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 ASTM A732 cast steel and the bottom bar is 515.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 4.0 to 25
10
Fatigue Strength, MPa 230 to 750
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72 to 73
26
Tensile Strength: Ultimate (UTS), MPa 460 to 1470
280

Thermal Properties

Latent Heat of Fusion, J/g 250 to 260
470
Maximum Temperature: Mechanical, °C 400 to 430
170
Melting Completion (Liquidus), °C 1440 to 1460
620
Melting Onset (Solidus), °C 1400 to 1420
620
Specific Heat Capacity, J/kg-K 470 to 480
900
Thermal Expansion, µm/m-K 13
23

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0 to 3.8
9.5
Density, g/cm3 7.8 to 7.9
2.6
Embodied Carbon, kg CO2/kg material 1.4 to 1.7
8.4
Embodied Energy, MJ/kg 19 to 24
150
Embodied Water, L/kg 47 to 54
1120

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 16 to 52
30
Strength to Weight: Bending, points 17 to 37
36
Thermal Shock Resistance, points 14 to 43
13