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ACI-ASTM CN7MS Steel vs. SAE-AISI M10 Steel

Both ACI-ASTM CN7MS steel and SAE-AISI M10 steel are iron alloys. They have 57% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is SAE-AISI M10 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
76
Tensile Strength: Ultimate (UTS), MPa 540
740 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 1400
1520
Melting Onset (Solidus), °C 1350
1470
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 12
31
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 28
14
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 5.1
8.3
Embodied Energy, MJ/kg 71
120
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 28
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
26 to 76
Strength to Weight: Bending, points 19
23 to 47
Thermal Diffusivity, mm2/s 3.2
8.5
Thermal Shock Resistance, points 13
23 to 68

Alloy Composition

Carbon (C), % 0 to 0.070
0.84 to 1.1
Chromium (Cr), % 18 to 20
3.8 to 4.5
Copper (Cu), % 1.5 to 2.0
0 to 0.25
Iron (Fe), % 45.4 to 53.5
82.3 to 85.6
Manganese (Mn), % 0 to 1.0
0.1 to 0.4
Molybdenum (Mo), % 2.5 to 3.0
7.8 to 8.5
Nickel (Ni), % 22 to 25
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 2.5 to 3.5
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2