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ACI-ASTM CF3 Steel vs. SAE-AISI M2 Steel

Both ACI-ASTM CF3 steel and SAE-AISI M2 steel are iron alloys. They have 74% of their average alloy composition in common. There are 22 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 ACI-ASTM CF3 steel and the bottom bar is SAE-AISI M2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 510
760 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1420
1610
Melting Onset (Solidus), °C 1450
1570
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 16
22
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 16
24
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 3.2
8.8
Embodied Energy, MJ/kg 45
130
Embodied Water, L/kg 150
98

Common Calculations

PREN (Pitting Resistance) 20
31
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 18
25 to 71
Strength to Weight: Bending, points 18
22 to 44
Thermal Diffusivity, mm2/s 4.3
5.9
Thermal Shock Resistance, points 11
27 to 76

Alloy Composition

Carbon (C), % 0 to 0.030
0.78 to 1.1
Chromium (Cr), % 17 to 21
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 62.9 to 75
78.5 to 83.4
Manganese (Mn), % 0 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.5
4.5 to 5.5
Nickel (Ni), % 8.0 to 12
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.2 to 0.45
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2