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SAE-AISI P21 Steel vs. N06455 Nickel

SAE-AISI P21 steel belongs to the iron alloys classification, while N06455 nickel belongs to the nickel alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P21 steel and the bottom bar is N06455 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
82
Tensile Strength: Ultimate (UTS), MPa 1130
780

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1450
1510
Melting Onset (Solidus), °C 1410
1450
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 41
10
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
65
Density, g/cm3 7.9
8.8
Embodied Carbon, kg CO2/kg material 2.3
12
Embodied Energy, MJ/kg 32
160
Embodied Water, L/kg 62
290

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 40
24
Strength to Weight: Bending, points 31
21
Thermal Diffusivity, mm2/s 11
2.7
Thermal Shock Resistance, points 37
24

Alloy Composition

Carbon (C), % 0.18 to 0.22
0 to 0.015
Chromium (Cr), % 0 to 0.5
14 to 18
Cobalt (Co), % 1.1 to 1.3
0 to 2.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 92.1 to 94.2
0 to 3.0
Manganese (Mn), % 0.35 to 0.72
0 to 1.0
Molybdenum (Mo), % 0
14 to 17
Nickel (Ni), % 3.9 to 4.3
58.1 to 72
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
0 to 0.080
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.7
Vanadium (V), % 0.15 to 0.25
0