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ASTM B628 Ag-Cu vs. C72200 Copper-nickel

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while C72200 copper-nickel belongs to the copper alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 ASTM B628 Ag-Cu and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
130
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 31
48
Tensile Strength: Ultimate (UTS), MPa 350 to 760
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 140
220
Melting Completion (Liquidus), °C 780
1180
Melting Onset (Solidus), °C 780
1120
Specific Heat Capacity, J/kg-K 280
400
Thermal Expansion, µm/m-K 19
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 75
6.6

Otherwise Unclassified Properties

Density, g/cm3 10
8.9

Common Calculations

Stiffness to Weight: Axial, points 4.6
8.0
Stiffness to Weight: Bending, points 14
19
Strength to Weight: Axial, points 9.5 to 21
11 to 18
Strength to Weight: Bending, points 11 to 18
12 to 17
Thermal Shock Resistance, points 16 to 34
12 to 20

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Chromium (Cr), % 0
0.3 to 0.7
Copper (Cu), % 26.6 to 29
78.1 to 84.2
Iron (Fe), % 0 to 0.050
0.5 to 1.0
Lead (Pb), % 0 to 0.030
0 to 0.050
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.010
15 to 18
Phosphorus (P), % 0 to 0.030
0
Silver (Ag), % 71 to 73
0
Zinc (Zn), % 0 to 0.060
0 to 1.0
Residuals, % 0 to 0.21
0 to 0.2