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C18700 Copper vs. SAE-AISI S1 Steel

C18700 copper belongs to the copper alloys classification, while SAE-AISI S1 steel belongs to the iron 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 C18700 copper and the bottom bar is SAE-AISI S1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
73
Tensile Strength: Ultimate (UTS), MPa 290 to 330
690 to 1840

Thermal Properties

Latent Heat of Fusion, J/g 210
260
Melting Completion (Liquidus), °C 1080
1500
Melting Onset (Solidus), °C 950
1450
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 380
41
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 99
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 30
8.0
Density, g/cm3 9.0
8.0
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 41
37
Embodied Water, L/kg 310
56

Common Calculations

Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.0 to 10
24 to 64
Strength to Weight: Bending, points 11 to 12
22 to 42
Thermal Diffusivity, mm2/s 110
11
Thermal Shock Resistance, points 10 to 12
21 to 56

Alloy Composition

Carbon (C), % 0
0.4 to 0.55
Chromium (Cr), % 0
1.0 to 1.8
Copper (Cu), % 98 to 99.2
0 to 0.25
Iron (Fe), % 0
91.6 to 96.7
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0.1 to 0.4
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.15 to 1.2
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.5 to 3.0
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 0 to 0.5
0