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C72900 Copper-nickel vs. AWS ERNiFeCr-2

C72900 copper-nickel belongs to the copper alloys classification, while AWS ERNiFeCr-2 belongs to the nickel alloys. There are 24 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 C72900 copper-nickel and the bottom bar is AWS ERNiFeCr-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 6.0 to 20
28
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 45
75
Tensile Strength: Ultimate (UTS), MPa 870 to 1080
1300

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Melting Completion (Liquidus), °C 1120
1460
Melting Onset (Solidus), °C 950
1410
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 29
12
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 39
75
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 4.6
13
Embodied Energy, MJ/kg 72
190
Embodied Water, L/kg 360
250

Common Calculations

Stiffness to Weight: Axial, points 7.6
13
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 27 to 34
43
Strength to Weight: Bending, points 23 to 27
32
Thermal Diffusivity, mm2/s 8.6
3.2
Thermal Shock Resistance, points 31 to 38
38

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0030
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 21
Copper (Cu), % 74.1 to 78
0 to 0.3
Iron (Fe), % 0 to 0.5
11.6 to 24.6
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.3
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 14.5 to 15.5
50 to 55
Niobium (Nb), % 0 to 0.1
4.8 to 5.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 7.5 to 8.5
0
Titanium (Ti), % 0
0.65 to 1.2
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0
0 to 0.5