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C18700 Copper vs. ACI-ASTM CN3M Steel

C18700 copper belongs to the copper alloys classification, while ACI-ASTM CN3M steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is ACI-ASTM CN3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 9.0 to 9.6
34
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
80
Tensile Strength: Ultimate (UTS), MPa 290 to 330
500
Tensile Strength: Yield (Proof), MPa 230 to 250
190

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 950
1400
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 380
13
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 99
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 30
31
Density, g/cm3 9.0
8.1
Embodied Carbon, kg CO2/kg material 2.6
5.9
Embodied Energy, MJ/kg 41
80
Embodied Water, L/kg 310
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
130
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
89
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.0 to 10
17
Strength to Weight: Bending, points 11 to 12
17
Thermal Diffusivity, mm2/s 110
3.4
Thermal Shock Resistance, points 10 to 12
11

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
42.4 to 52.5
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
4.5 to 5.5
Nickel (Ni), % 0
23 to 27
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0