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SAE-AISI S7 Steel vs. Grade CX2MW Nickel

SAE-AISI S7 steel belongs to the iron alloys classification, while grade CX2MW 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 S7 steel and the bottom bar is grade CX2MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
84
Tensile Strength: Ultimate (UTS), MPa 670 to 2030
620

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1460
1550
Melting Onset (Solidus), °C 1420
1490
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 40
10
Thermal Expansion, µm/m-K 12
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
65
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.3
12
Embodied Energy, MJ/kg 31
170
Embodied Water, L/kg 65
290

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24 to 72
19
Strength to Weight: Bending, points 22 to 46
18
Thermal Diffusivity, mm2/s 11
2.7
Thermal Shock Resistance, points 22 to 66
17

Alloy Composition

Carbon (C), % 0.45 to 0.55
0 to 0.020
Chromium (Cr), % 3.0 to 3.5
20 to 22.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 91.6 to 94.9
2.0 to 6.0
Manganese (Mn), % 0.2 to 0.9
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
12.5 to 14.5
Nickel (Ni), % 0
51.3 to 63
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0 to 0.3
0 to 0.35