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SAE-AISI O7 Steel vs. CC381H Copper-nickel

SAE-AISI O7 steel belongs to the iron alloys classification, while CC381H copper-nickel belongs to the copper 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 O7 steel and the bottom bar is CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
52
Tensile Strength: Ultimate (UTS), MPa 680 to 2110
380

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Melting Completion (Liquidus), °C 1480
1180
Melting Onset (Solidus), °C 1430
1120
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 41
30
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 6.0
40
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 2.3
5.0
Embodied Energy, MJ/kg 33
73
Embodied Water, L/kg 52
280

Common Calculations

Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 24 to 74
12
Strength to Weight: Bending, points 22 to 46
13
Thermal Diffusivity, mm2/s 11
8.4
Thermal Shock Resistance, points 23 to 70
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Carbon (C), % 1.1 to 1.3
0 to 0.030
Chromium (Cr), % 0.35 to 0.85
0
Copper (Cu), % 0 to 0.25
64.5 to 69.9
Iron (Fe), % 92.9 to 97.6
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.0
0.6 to 1.2
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 0.3
29 to 31
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 0.6
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 1.0 to 2.0
0
Vanadium (V), % 0 to 0.4
0
Zinc (Zn), % 0
0 to 0.5