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Grade CW2M Nickel vs. S21904 Stainless Steel

Grade CW2M nickel belongs to the nickel alloys classification, while S21904 stainless steel belongs to the iron alloys. They have a modest 25% 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 (8, in this case) are not shown.

For each property being compared, the top bar is grade CW2M nickel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
17 to 51
Fatigue Strength, MPa 190
380 to 550
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
78
Tensile Strength: Ultimate (UTS), MPa 560
700 to 1000
Tensile Strength: Yield (Proof), MPa 310
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 960
980
Melting Completion (Liquidus), °C 1520
1400
Melting Onset (Solidus), °C 1460
1350
Specific Heat Capacity, J/kg-K 430
480
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 70
15
Density, g/cm3 8.8
7.7
Embodied Carbon, kg CO2/kg material 12
3.0
Embodied Energy, MJ/kg 170
43
Embodied Water, L/kg 290
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 220
380 to 2070
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
25 to 36
Strength to Weight: Bending, points 17
23 to 29
Thermal Shock Resistance, points 16
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.040
Chromium (Cr), % 15 to 17.5
19 to 21.5
Iron (Fe), % 0 to 2.0
59.5 to 67.4
Manganese (Mn), % 0 to 1.0
8.0 to 10
Molybdenum (Mo), % 15 to 17.5
0
Nickel (Ni), % 60.1 to 70
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.045
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