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ACI-ASTM CA6NM Steel vs. SAE-AISI M2 Steel

Both ACI-ASTM CA6NM steel and SAE-AISI M2 steel are iron alloys. They have 87% of their average alloy composition in common. There are 22 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 ACI-ASTM CA6NM 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 76
77
Tensile Strength: Ultimate (UTS), MPa 850
760 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Melting Completion (Liquidus), °C 1450
1610
Melting Onset (Solidus), °C 1400
1570
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 25
22
Thermal Expansion, µm/m-K 10
10

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.5
8.8
Embodied Energy, MJ/kg 34
130
Embodied Water, L/kg 110
98

Common Calculations

PREN (Pitting Resistance) 15
31
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 30
25 to 71
Strength to Weight: Bending, points 26
22 to 44
Thermal Diffusivity, mm2/s 6.7
5.9
Thermal Shock Resistance, points 31
27 to 76

Alloy Composition

Carbon (C), % 0 to 0.060
0.78 to 1.1
Chromium (Cr), % 11.5 to 14
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 78.4 to 84.6
78.5 to 83.4
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0.4 to 1.0
4.5 to 5.5
Nickel (Ni), % 3.5 to 4.5
0 to 0.3
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 0.030
0 to 0.030
Tungsten (W), % 0
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2