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SAE-AISI P21 Steel vs. N09777 Nickel

SAE-AISI P21 steel belongs to the iron alloys classification, while N09777 nickel belongs to the nickel alloys. They have 43% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P21 steel and the bottom bar is N09777 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
77
Tensile Strength: Ultimate (UTS), MPa 1130
580

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
38
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.3
7.4
Embodied Energy, MJ/kg 32
100
Embodied Water, L/kg 62
200

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 40
20
Strength to Weight: Bending, points 31
19
Thermal Shock Resistance, points 37
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0.18 to 0.22
0 to 0.030
Chromium (Cr), % 0 to 0.5
14 to 19
Cobalt (Co), % 1.1 to 1.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 92.1 to 94.2
28.5 to 47.5
Manganese (Mn), % 0.35 to 0.72
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 5.5
Nickel (Ni), % 3.9 to 4.3
34 to 42
Niobium (Nb), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
2.0 to 3.0
Vanadium (V), % 0.15 to 0.25
0