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Nickel 22 vs. SAE-AISI P21 Steel

Nickel 22 belongs to the nickel alloys classification, while SAE-AISI P21 steel belongs to the iron alloys. There are 23 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 nickel 22 and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 84
73
Tensile Strength: Ultimate (UTS), MPa 790
1130

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1390
1450
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 10
41
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 70
6.5
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 12
2.3
Embodied Energy, MJ/kg 170
32
Embodied Water, L/kg 300
62

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 25
40
Strength to Weight: Bending, points 21
31
Thermal Diffusivity, mm2/s 2.7
11
Thermal Shock Resistance, points 24
37

Alloy Composition

Carbon (C), % 0 to 0.015
0.18 to 0.22
Chromium (Cr), % 20 to 22.5
0 to 0.5
Cobalt (Co), % 0 to 2.5
1.1 to 1.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 2.0 to 6.0
92.1 to 94.2
Manganese (Mn), % 0 to 0.015
0.35 to 0.72
Molybdenum (Mo), % 12.5 to 14.5
0
Nickel (Ni), % 50.8 to 63
3.9 to 4.3
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.080
0.2 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 2.5 to 3.5
0
Vanadium (V), % 0 to 0.35
0.15 to 0.25