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SAE-AISI S7 Steel vs. C18700 Copper

SAE-AISI S7 steel belongs to the iron alloys classification, while C18700 copper 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 S7 steel and the bottom bar is C18700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 74
43
Tensile Strength: Ultimate (UTS), MPa 670 to 2030
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 260
210
Melting Completion (Liquidus), °C 1460
1080
Melting Onset (Solidus), °C 1420
950
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 40
380
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
98
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
99

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
30
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 2.3
2.6
Embodied Energy, MJ/kg 31
41
Embodied Water, L/kg 65
310

Common Calculations

Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 24 to 72
9.0 to 10
Strength to Weight: Bending, points 22 to 46
11 to 12
Thermal Diffusivity, mm2/s 11
110
Thermal Shock Resistance, points 22 to 66
10 to 12

Alloy Composition

Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 3.0 to 3.5
0
Copper (Cu), % 0 to 0.25
98 to 99.2
Iron (Fe), % 91.6 to 94.9
0
Lead (Pb), % 0
0.8 to 1.5
Manganese (Mn), % 0.2 to 0.9
0
Molybdenum (Mo), % 1.3 to 1.8
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0 to 0.3
0
Residuals, % 0
0 to 0.5