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238.0 Aluminum vs. ASTM A217 Cast Steel

238.0 aluminum belongs to the aluminum alloys classification, while ASTM A217 cast steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 238.0 aluminum and the bottom bar is ASTM A217 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
190
Elongation at Break, % 1.5
21 to 27
Fatigue Strength, MPa 110
200 to 320
Poisson's Ratio 0.33
0.28 to 0.29
Shear Modulus, GPa 28
73 to 75
Tensile Strength: Ultimate (UTS), MPa 210
540 to 710
Tensile Strength: Yield (Proof), MPa 170
270 to 460

Thermal Properties

Latent Heat of Fusion, J/g 430
250 to 270
Maximum Temperature: Mechanical, °C 170
410 to 600
Melting Completion (Liquidus), °C 600
1450 to 1460
Melting Onset (Solidus), °C 510
1410 to 1420
Specific Heat Capacity, J/kg-K 840
470
Thermal Conductivity, W/m-K 100
26 to 50
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.3 to 9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 67
8.4 to 11

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.4 to 7.0
Density, g/cm3 3.4
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.5 to 2.1
Embodied Energy, MJ/kg 140
20 to 28
Embodied Water, L/kg 1040
47 to 87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 180
190 to 570
Stiffness to Weight: Axial, points 12
13 to 14
Stiffness to Weight: Bending, points 42
24 to 25
Strength to Weight: Axial, points 17
19 to 25
Strength to Weight: Bending, points 23
19 to 23
Thermal Diffusivity, mm2/s 37
6.9 to 14
Thermal Shock Resistance, points 9.1
16 to 20