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C70700 Copper-nickel vs. AWS E33-31

C70700 copper-nickel belongs to the copper alloys classification, while AWS E33-31 belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is AWS E33-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 39
29
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 46
81
Tensile Strength: Ultimate (UTS), MPa 320
810

Thermal Properties

Latent Heat of Fusion, J/g 220
320
Melting Completion (Liquidus), °C 1120
1380
Melting Onset (Solidus), °C 1060
1330
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 34
36
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 3.4
6.0
Embodied Energy, MJ/kg 52
86
Embodied Water, L/kg 300
260

Common Calculations

Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10
28
Strength to Weight: Bending, points 12
24
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
31 to 35
Copper (Cu), % 88.5 to 90.5
0.4 to 0.8
Iron (Fe), % 0 to 0.050
24.7 to 34.8
Manganese (Mn), % 0 to 0.5
2.5 to 4.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 9.5 to 10.5
30 to 32
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.9
Sulfur (S), % 0
0 to 0.010
Residuals, % 0 to 0.5
0