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SAE-AISI M4 Steel vs. ASTM A732 Cast Steel

Both SAE-AISI M4 steel and ASTM A732 cast steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
72 to 73
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
460 to 1470

Thermal Properties

Latent Heat of Fusion, J/g 260
250 to 260
Melting Completion (Liquidus), °C 1610
1440 to 1460
Melting Onset (Solidus), °C 1560
1400 to 1420
Specific Heat Capacity, J/kg-K 440
470 to 480
Thermal Conductivity, W/m-K 25
39 to 50
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.0 to 3.8
Density, g/cm3 8.3
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 14
1.4 to 1.7
Embodied Energy, MJ/kg 210
19 to 24
Embodied Water, L/kg 110
47 to 54

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 72
16 to 52
Strength to Weight: Bending, points 23 to 45
17 to 37
Thermal Diffusivity, mm2/s 6.9
10 to 14
Thermal Shock Resistance, points 24 to 68
14 to 43