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SAE-AISI P20 Steel vs. Grade CW6MC Nickel

SAE-AISI P20 steel belongs to the iron alloys classification, while grade CW6MC nickel belongs to the nickel alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P20 steel and the bottom bar is grade CW6MC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 540 to 1050
540

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 45
11
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
80
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 1.6
14
Embodied Energy, MJ/kg 21
200
Embodied Water, L/kg 52
290

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 19 to 37
18
Strength to Weight: Bending, points 19 to 29
17
Thermal Diffusivity, mm2/s 12
2.8
Thermal Shock Resistance, points 18 to 35
15

Alloy Composition

Carbon (C), % 0.28 to 0.4
0 to 0.060
Chromium (Cr), % 0.4 to 2.0
20 to 23
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95.2 to 98.5
0 to 5.0
Manganese (Mn), % 0.35 to 0.71
0 to 1.0
Molybdenum (Mo), % 0.3 to 0.55
8.0 to 10
Nickel (Ni), % 0
55.4 to 68.9
Niobium (Nb), % 0
3.2 to 4.5
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.2 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030