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Nickel 22 vs. S31803 Stainless Steel

Nickel 22 belongs to the nickel alloys classification, while S31803 stainless steel belongs to the iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 nickel 22 and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 49
29
Fatigue Strength, MPa 330
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 84
80
Shear Strength, MPa 560
460
Tensile Strength: Ultimate (UTS), MPa 790
710
Tensile Strength: Yield (Proof), MPa 360
500

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 990
1060
Melting Completion (Liquidus), °C 1390
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 10
16
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 70
17
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 12
3.6
Embodied Energy, MJ/kg 170
49
Embodied Water, L/kg 300
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
180
Resilience: Unit (Modulus of Resilience), kJ/m3 300
630
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 2.7
4.3
Thermal Shock Resistance, points 24
20

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.030
Chromium (Cr), % 20 to 22.5
21 to 23
Cobalt (Co), % 0 to 2.5
0
Iron (Fe), % 2.0 to 6.0
63.7 to 71.9
Manganese (Mn), % 0 to 0.015
0 to 2.0
Molybdenum (Mo), % 12.5 to 14.5
2.5 to 3.5
Nickel (Ni), % 50.8 to 63
4.5 to 6.5
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.020
Tungsten (W), % 2.5 to 3.5
0
Vanadium (V), % 0 to 0.35
0