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C18700 Copper vs. EN 1.0478 Steel

C18700 copper belongs to the copper alloys classification, while EN 1.0478 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is EN 1.0478 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.0 to 9.6
24
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
73
Shear Strength, MPa 170 to 190
280
Tensile Strength: Ultimate (UTS), MPa 290 to 330
440
Tensile Strength: Yield (Proof), MPa 230 to 250
230

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 1080
1460
Melting Onset (Solidus), °C 950
1420
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 380
49
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 99
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
2.2
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.5
Embodied Energy, MJ/kg 41
20
Embodied Water, L/kg 310
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
90
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
150
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.0 to 10
16
Strength to Weight: Bending, points 11 to 12
16
Thermal Diffusivity, mm2/s 110
13
Thermal Shock Resistance, points 10 to 12
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.060
Carbon (C), % 0
0 to 0.18
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 98 to 99.2
0 to 0.2
Iron (Fe), % 0
96.9 to 99.4
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0.6 to 1.4
Molybdenum (Mo), % 0
0 to 0.080
Nickel (Ni), % 0
0 to 0.3
Niobium (Nb), % 0
0 to 0.030
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Vanadium (V), % 0
0 to 0.050
Residuals, % 0 to 0.5
0