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SAE-AISI S7 Steel vs. N06920 Nickel

SAE-AISI S7 steel belongs to the iron alloys classification, while N06920 nickel belongs to the nickel alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. 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 SAE-AISI S7 steel and the bottom bar is N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
82
Tensile Strength: Ultimate (UTS), MPa 670 to 2030
730

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1460
1500
Melting Onset (Solidus), °C 1420
1440
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 40
11
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
55
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 2.3
9.4
Embodied Energy, MJ/kg 31
130
Embodied Water, L/kg 65
270

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24 to 72
24
Strength to Weight: Bending, points 22 to 46
21
Thermal Diffusivity, mm2/s 11
2.8
Thermal Shock Resistance, points 22 to 66
19

Alloy Composition

Carbon (C), % 0.45 to 0.55
0 to 0.030
Chromium (Cr), % 3.0 to 3.5
20.5 to 23
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 91.6 to 94.9
17 to 20
Manganese (Mn), % 0.2 to 0.9
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
8.0 to 10
Nickel (Ni), % 0
36.9 to 53.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.0 to 3.0
Vanadium (V), % 0 to 0.3
0