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CR018A Copper vs. AWS ERNiCu-7

CR018A 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 (4, in this case) are not shown.

For each property being compared, the top bar is CR018A 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, % 15
34
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
61
Tensile Strength: Ultimate (UTS), MPa 220
550

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Melting Completion (Liquidus), °C 1090
1280
Melting Onset (Solidus), °C 1040
1240
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 390
20
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
3.2
Electrical Conductivity: Equal Weight (Specific), % IACS 100
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
50
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.7
8.5
Embodied Energy, MJ/kg 42
120
Embodied Water, L/kg 360
250

Common Calculations

Stiffness to Weight: Axial, points 7.2
10
Stiffness to Weight: Bending, points 18
21
Strength to Weight: Axial, points 6.8
18
Strength to Weight: Bending, points 9.0
17
Thermal Diffusivity, mm2/s 110
5.3
Thermal Shock Resistance, points 7.8
19

Alloy Composition

Aluminum (Al), % 0
0 to 1.3
Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0 to 0.15
Copper (Cu), % 99.914 to 99.94
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
0 to 0.030
Silicon (Si), % 0
0 to 1.3
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
1.5 to 3.0
Residuals, % 0
0 to 0.5