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Grade CW2M Nickel vs. ACI-ASTM CE8MN Steel

Grade CW2M nickel belongs to the nickel alloys classification, while ACI-ASTM CE8MN steel belongs to the iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade CW2M nickel and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
29
Fatigue Strength, MPa 190
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 83
80
Tensile Strength: Ultimate (UTS), MPa 560
750
Tensile Strength: Yield (Proof), MPa 310
500

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 960
1100
Melting Completion (Liquidus), °C 1520
1440
Melting Onset (Solidus), °C 1460
1400
Specific Heat Capacity, J/kg-K 430
480
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
21
Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 12
4.2
Embodied Energy, MJ/kg 170
58
Embodied Water, L/kg 290
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
190
Resilience: Unit (Modulus of Resilience), kJ/m3 220
620
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
27
Strength to Weight: Bending, points 17
23
Thermal Shock Resistance, points 16
21

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 15 to 17.5
22.5 to 25.5
Iron (Fe), % 0 to 2.0
56 to 66.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 15 to 17.5
3.0 to 4.5
Nickel (Ni), % 60.1 to 70
8.0 to 11
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 0 to 1.0
0