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Grade CW2M Nickel vs. AWS E318

Grade CW2M nickel belongs to the nickel alloys classification, while AWS E318 belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 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 grade CW2M nickel and the bottom bar is AWS E318.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
29
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
78
Tensile Strength: Ultimate (UTS), MPa 560
620

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Melting Completion (Liquidus), °C 1520
1440
Melting Onset (Solidus), °C 1460
1400
Specific Heat Capacity, J/kg-K 430
470
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 70
23
Density, g/cm3 8.8
7.9
Embodied Carbon, kg CO2/kg material 12
4.4
Embodied Energy, MJ/kg 170
62
Embodied Water, L/kg 290
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 17
20
Thermal Shock Resistance, points 16
16

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 15 to 17.5
17 to 20
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 2.0
57.6 to 69.5
Manganese (Mn), % 0 to 1.0
0.5 to 2.5
Molybdenum (Mo), % 15 to 17.5
2.0 to 3.0
Nickel (Ni), % 60.1 to 70
11 to 14
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0 to 1.0
0