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S31730 Stainless Steel vs. Grade CW12MW Nickel

S31730 stainless steel belongs to the iron alloys classification, while grade CW12MW nickel belongs to the nickel alloys. They have 43% of their average alloy composition in common. 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 S31730 stainless steel and the bottom bar is grade CW12MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 40
4.6
Fatigue Strength, MPa 170
130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
85
Tensile Strength: Ultimate (UTS), MPa 540
560
Tensile Strength: Yield (Proof), MPa 200
310

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 990
960
Melting Completion (Liquidus), °C 1430
1610
Melting Onset (Solidus), °C 1390
1560
Specific Heat Capacity, J/kg-K 470
410
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
70
Density, g/cm3 8.0
9.1
Embodied Carbon, kg CO2/kg material 4.6
13
Embodied Energy, MJ/kg 63
180
Embodied Water, L/kg 180
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
22
Resilience: Unit (Modulus of Resilience), kJ/m3 99
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 18
17
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 17 to 19
15.5 to 17.5
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
4.5 to 7.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
16 to 18
Nickel (Ni), % 15 to 16.5
49.2 to 60.1
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0
3.8 to 5.3
Vanadium (V), % 0
0.2 to 0.4