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C70700 Copper-nickel vs. ASTM B617 Coin Silver

C70700 copper-nickel belongs to the copper alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 19 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 ASTM B617 coin silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
75
Elongation at Break, % 39
1.1 to 22
Poisson's Ratio 0.34
0.37
Shear Modulus, GPa 46
28
Shear Strength, MPa 220
180 to 290
Tensile Strength: Ultimate (UTS), MPa 320
290 to 520

Thermal Properties

Latent Heat of Fusion, J/g 220
120
Melting Completion (Liquidus), °C 1120
870
Melting Onset (Solidus), °C 1060
780
Specific Heat Capacity, J/kg-K 390
250
Thermal Expansion, µm/m-K 16
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
83
Electrical Conductivity: Equal Weight (Specific), % IACS 12
72

Otherwise Unclassified Properties

Density, g/cm3 8.9
10

Common Calculations

Stiffness to Weight: Axial, points 7.6
4.1
Stiffness to Weight: Bending, points 19
14
Strength to Weight: Axial, points 10
7.7 to 14
Strength to Weight: Bending, points 12
9.3 to 14
Thermal Shock Resistance, points 12
14 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 88.5 to 90.5
9.0 to 10.4
Iron (Fe), % 0 to 0.050
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 9.5 to 10.5
0 to 0.010
Phosphorus (P), % 0
0 to 0.020
Silver (Ag), % 0
89.6 to 91
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.060