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S43940 Stainless Steel vs. Grade CW12MW Nickel

S43940 stainless steel belongs to the iron alloys classification, while grade CW12MW nickel belongs to the nickel alloys. They have a modest 24% 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 (9, in this case) are not shown.

For each property being compared, the top bar is S43940 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, % 21
4.6
Fatigue Strength, MPa 180
130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
85
Tensile Strength: Ultimate (UTS), MPa 490
560
Tensile Strength: Yield (Proof), MPa 280
310

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 890
960
Melting Completion (Liquidus), °C 1440
1610
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
70
Density, g/cm3 7.7
9.1
Embodied Carbon, kg CO2/kg material 2.6
13
Embodied Energy, MJ/kg 38
180
Embodied Water, L/kg 120
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
22
Resilience: Unit (Modulus of Resilience), kJ/m3 200
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 18
17
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 17.5 to 18.5
15.5 to 17.5
Iron (Fe), % 78.2 to 82.1
4.5 to 7.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
16 to 18
Nickel (Ni), % 0
49.2 to 60.1
Niobium (Nb), % 0.3 to 0.6
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 0.015
0 to 0.030
Titanium (Ti), % 0.1 to 0.6
0
Tungsten (W), % 0
3.8 to 5.3
Vanadium (V), % 0
0.2 to 0.4