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ACI-ASTM CN7MS Steel vs. AISI W1 Steel

Both ACI-ASTM CN7MS steel and AISI W1 steel are iron alloys. They have 51% of their average alloy composition in common. There are 21 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 CN7MS steel and the bottom bar is AISI W1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 540
590 to 2320

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
48
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 28
2.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
1.6
Embodied Energy, MJ/kg 71
21
Embodied Water, L/kg 180
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
21 to 83
Strength to Weight: Bending, points 19
20 to 50
Thermal Diffusivity, mm2/s 3.2
13
Thermal Shock Resistance, points 13
22 to 85

Alloy Composition

Carbon (C), % 0 to 0.070
0.7 to 1.5
Chromium (Cr), % 18 to 20
0 to 0.15
Copper (Cu), % 1.5 to 2.0
0 to 0.2
Iron (Fe), % 45.4 to 53.5
96.4 to 98.9
Manganese (Mn), % 0 to 1.0
0.35 to 0.73
Molybdenum (Mo), % 2.5 to 3.0
0 to 0.1
Nickel (Ni), % 22 to 25
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 2.5 to 3.5
0.1 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
0 to 0.1