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ASTM A27 Cast Steel vs. 358.0 Aluminum

ASTM A27 cast steel belongs to the iron alloys classification, while 358.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 A27 cast steel and the bottom bar is 358.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 25 to 27
3.5 to 6.0
Fatigue Strength, MPa 170 to 230
100 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 460 to 550
350 to 370
Tensile Strength: Yield (Proof), MPa 230 to 310
290 to 320

Thermal Properties

Latent Heat of Fusion, J/g 250
520
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
150
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0 to 7.1
36
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
19
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 1.4
8.7
Embodied Energy, MJ/kg 18
160
Embodied Water, L/kg 45 to 46
1090

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
12 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
590 to 710
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 16 to 20
37 to 39
Strength to Weight: Bending, points 17 to 19
42 to 44
Thermal Diffusivity, mm2/s 14
63
Thermal Shock Resistance, points 15 to 18
16 to 17