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SAE-AISI M4 Steel vs. ACI-ASTM CE3MN Steel

Both SAE-AISI M4 steel and ACI-ASTM CE3MN steel are iron alloys. They have 72% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is ACI-ASTM CE3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
770

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
21
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 14
4.2
Embodied Energy, MJ/kg 210
58
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 30
43
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
27
Strength to Weight: Bending, points 23 to 45
24
Thermal Diffusivity, mm2/s 6.9
4.1
Thermal Shock Resistance, points 24 to 68
21

Alloy Composition

Carbon (C), % 1.3 to 1.4
0 to 0.030
Chromium (Cr), % 3.8 to 4.8
24 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 75.9 to 81.4
58.1 to 65.9
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.3 to 5.5
4.0 to 5.0
Nickel (Ni), % 0 to 0.3
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0