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C12200 Copper vs. AWS ERNiCu-7

C12200 copper belongs to the copper alloys classification, while AWS ERNiCu-7 belongs to the nickel alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 C12200 copper and the bottom bar is AWS ERNiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
160
Elongation at Break, % 3.2 to 50
34
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
61
Tensile Strength: Ultimate (UTS), MPa 220 to 410
550

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Melting Completion (Liquidus), °C 1080
1280
Melting Onset (Solidus), °C 1030
1240
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 340
20
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 85
3.2
Electrical Conductivity: Equal Weight (Specific), % IACS 85
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
50
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.6
8.5
Embodied Energy, MJ/kg 41
120
Embodied Water, L/kg 310
250

Common Calculations

Stiffness to Weight: Axial, points 7.2
10
Stiffness to Weight: Bending, points 18
21
Strength to Weight: Axial, points 6.9 to 13
18
Strength to Weight: Bending, points 9.1 to 14
17
Thermal Diffusivity, mm2/s 98
5.3
Thermal Shock Resistance, points 7.9 to 15
19

Alloy Composition

Aluminum (Al), % 0
0 to 1.3
Carbon (C), % 0
0 to 0.15
Copper (Cu), % 99.9 to 99.985
18.3 to 36.5
Iron (Fe), % 0
0 to 2.5
Manganese (Mn), % 0
0 to 4.0
Nickel (Ni), % 0
62 to 69
Phosphorus (P), % 0.015 to 0.040
0 to 0.030
Silicon (Si), % 0
0 to 1.3
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
1.5 to 3.0
Residuals, % 0
0 to 0.5