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

Both ACI-ASTM CE3MN steel and SAE-AISI M4 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 ACI-ASTM CE3MN steel and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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