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SAE-AISI M4 Steel vs. ASTM A148 Cast Steel

Both SAE-AISI M4 steel and ASTM A148 cast steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 A148 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
73
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
630 to 1300

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 25
37 to 47
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.3 to 3.3
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 14
1.5 to 1.7
Embodied Energy, MJ/kg 210
20 to 22
Embodied Water, L/kg 110
48 to 53

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 72
22 to 46
Strength to Weight: Bending, points 23 to 45
21 to 34
Thermal Diffusivity, mm2/s 6.9
9.9 to 13
Thermal Shock Resistance, points 24 to 68
18 to 38

Comparable Variants