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H08 C70620 Copper-nickel vs. H08 C76200 Nickel Silver

Both H08 C70620 copper-nickel and H08 C76200 nickel silver are copper alloys. Both are furnished in the H08 (spring) temper. They have 70% of their average alloy composition in common. 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 H08 C70620 copper-nickel and the bottom bar is H08 C76200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Poisson's Ratio 0.34
0.31
Rockwell B Hardness 87
99
Rockwell Superficial 30T Hardness 75
91
Shear Modulus, GPa 46
44
Tensile Strength: Ultimate (UTS), MPa 570
790

Thermal Properties

Latent Heat of Fusion, J/g 220
190
Maximum Temperature: Mechanical, °C 220
170
Melting Completion (Liquidus), °C 1120
1030
Melting Onset (Solidus), °C 1060
980
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 49
45
Thermal Expansion, µm/m-K 17
19

Otherwise Unclassified Properties

Base Metal Price, % relative 33
29
Density, g/cm3 8.9
8.2
Embodied Carbon, kg CO2/kg material 3.4
3.6
Embodied Energy, MJ/kg 51
57
Embodied Water, L/kg 300
310

Common Calculations

Stiffness to Weight: Axial, points 7.7
7.8
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 18
27
Strength to Weight: Bending, points 17
23
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 20
26

Alloy Composition

Carbon (C), % 0 to 0.050
0
Copper (Cu), % 86.5 to 90
57 to 61
Iron (Fe), % 1.0 to 1.8
0 to 0.25
Lead (Pb), % 0 to 0.020
0 to 0.1
Manganese (Mn), % 0 to 1.0
0 to 0.5
Nickel (Ni), % 9.0 to 11
11 to 13.5
Phosphorus (P), % 0 to 0.2
0
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0 to 0.5
24.2 to 32
Residuals, % 0
0 to 0.5