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ASTM A732 Cast Steel vs. EN AC-48100 Aluminum

ASTM A732 cast steel belongs to the iron alloys classification, while EN AC-48100 aluminum belongs to the aluminum alloys. 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 EN AC-48100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 440
100 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
76
Elongation at Break, % 4.0 to 25
1.1
Fatigue Strength, MPa 230 to 750
120 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72 to 73
29
Tensile Strength: Ultimate (UTS), MPa 460 to 1470
240 to 330
Tensile Strength: Yield (Proof), MPa 310 to 1340
190 to 300

Thermal Properties

Latent Heat of Fusion, J/g 250 to 260
640
Maximum Temperature: Mechanical, °C 400 to 430
170
Melting Completion (Liquidus), °C 1440 to 1460
580
Melting Onset (Solidus), °C 1400 to 1420
470
Specific Heat Capacity, J/kg-K 470 to 480
880
Thermal Conductivity, W/m-K 39 to 50
130
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1 to 7.7
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.9
87

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0 to 3.8
11
Density, g/cm3 7.8 to 7.9
2.8
Embodied Carbon, kg CO2/kg material 1.4 to 1.7
7.3
Embodied Energy, MJ/kg 19 to 24
130
Embodied Water, L/kg 47 to 54
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 45 to 130
2.3 to 3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 4770
250 to 580
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 16 to 52
24 to 33
Strength to Weight: Bending, points 17 to 37
31 to 38
Thermal Diffusivity, mm2/s 10 to 14
55
Thermal Shock Resistance, points 14 to 43
11 to 16