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C18700 Copper vs. C81400 Copper

Both C18700 copper and C81400 copper are copper alloys. They have a very high 99% of their average alloy composition in common. There are 28 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 C81400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 9.0 to 9.6
11
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
41
Tensile Strength: Ultimate (UTS), MPa 290 to 330
370
Tensile Strength: Yield (Proof), MPa 230 to 250
250

Thermal Properties

Latent Heat of Fusion, J/g 210
210
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 1080
1090
Melting Onset (Solidus), °C 950
1070
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 380
260
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
60
Electrical Conductivity: Equal Weight (Specific), % IACS 99
61

Otherwise Unclassified Properties

Base Metal Price, % relative 30
33
Density, g/cm3 9.0
8.9
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 41
45
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
36
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
260
Stiffness to Weight: Axial, points 7.1
7.3
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 9.0 to 10
11
Strength to Weight: Bending, points 11 to 12
13
Thermal Diffusivity, mm2/s 110
75
Thermal Shock Resistance, points 10 to 12
13

Alloy Composition

Beryllium (Be), % 0
0.020 to 0.1
Chromium (Cr), % 0
0.6 to 1.0
Copper (Cu), % 98 to 99.2
98.4 to 99.38
Lead (Pb), % 0.8 to 1.5
0
Residuals, % 0
0 to 0.5