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Grade CX2M Nickel vs. S21800 Stainless Steel

Grade CX2M nickel belongs to the nickel alloys classification, while S21800 stainless steel belongs to the iron alloys. They have a modest 27% 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 CX2M nickel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 45
40
Fatigue Strength, MPa 260
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
75
Tensile Strength: Ultimate (UTS), MPa 550
740
Tensile Strength: Yield (Proof), MPa 310
390

Thermal Properties

Latent Heat of Fusion, J/g 330
340
Maximum Temperature: Mechanical, °C 990
900
Melting Completion (Liquidus), °C 1500
1360
Melting Onset (Solidus), °C 1450
1310
Specific Heat Capacity, J/kg-K 430
500
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 65
15
Density, g/cm3 8.7
7.5
Embodied Carbon, kg CO2/kg material 12
3.1
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 310
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
250
Resilience: Unit (Modulus of Resilience), kJ/m3 220
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 18
27
Strength to Weight: Bending, points 17
24
Thermal Shock Resistance, points 15
17

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.1
Chromium (Cr), % 22 to 24
16 to 18
Iron (Fe), % 0 to 1.5
59.1 to 65.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Molybdenum (Mo), % 15 to 16.5
0
Nickel (Ni), % 56.4 to 63
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.020
0 to 0.060
Silicon (Si), % 0 to 0.5
3.5 to 4.5
Sulfur (S), % 0 to 0.020
0 to 0.030