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Grade CW6M Nickel vs. S31730 Stainless Steel

Grade CW6M nickel belongs to the nickel alloys classification, while S31730 stainless steel belongs to the iron alloys. They have a modest 40% 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 (5, in this case) are not shown.

For each property being compared, the top bar is grade CW6M nickel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 29
40
Fatigue Strength, MPa 210
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
77
Tensile Strength: Ultimate (UTS), MPa 560
540
Tensile Strength: Yield (Proof), MPa 310
200

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 970
990
Melting Completion (Liquidus), °C 1530
1430
Melting Onset (Solidus), °C 1470
1390
Specific Heat Capacity, J/kg-K 430
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 65
24
Density, g/cm3 8.8
8.0
Embodied Carbon, kg CO2/kg material 13
4.6
Embodied Energy, MJ/kg 170
63
Embodied Water, L/kg 300
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
170
Resilience: Unit (Modulus of Resilience), kJ/m3 220
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 17
18
Thermal Shock Resistance, points 16
12

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 17 to 20
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 0 to 3.0
52.4 to 61
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 17 to 20
3.0 to 4.0
Nickel (Ni), % 54.9 to 66
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010