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EN AC-46000 Aluminum vs. ASTM A732 Cast Steel

EN AC-46000 aluminum belongs to the aluminum alloys classification, while ASTM A732 cast steel belongs to the iron 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 EN AC-46000 aluminum and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
140 to 440
Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 1.0
4.0 to 25
Fatigue Strength, MPa 110
230 to 750
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
72 to 73
Tensile Strength: Ultimate (UTS), MPa 270
460 to 1470
Tensile Strength: Yield (Proof), MPa 160
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 530
250 to 260
Maximum Temperature: Mechanical, °C 180
400 to 430
Melting Completion (Liquidus), °C 620
1440 to 1460
Melting Onset (Solidus), °C 530
1400 to 1420
Specific Heat Capacity, J/kg-K 880
470 to 480
Thermal Conductivity, W/m-K 100
39 to 50
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
7.1 to 7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 82
8.2 to 8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.0 to 3.8
Density, g/cm3 2.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 7.6
1.4 to 1.7
Embodied Energy, MJ/kg 140
19 to 24
Embodied Water, L/kg 1040
47 to 54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 170
260 to 4770
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 26
16 to 52
Strength to Weight: Bending, points 33
17 to 37
Thermal Diffusivity, mm2/s 42
10 to 14
Thermal Shock Resistance, points 12
14 to 43