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ASTM B628 Ag-Cu vs. C55280 Copper

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while C55280 copper belongs to the copper alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is C55280 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 31
40
Tensile Strength: Ultimate (UTS), MPa 350 to 760
180

Thermal Properties

Latent Heat of Fusion, J/g 140
190
Melting Completion (Liquidus), °C 780
790
Melting Onset (Solidus), °C 780
640
Specific Heat Capacity, J/kg-K 280
410
Thermal Expansion, µm/m-K 19
16

Otherwise Unclassified Properties

Density, g/cm3 10
8.5

Common Calculations

Stiffness to Weight: Axial, points 4.6
6.9
Stiffness to Weight: Bending, points 14
19
Strength to Weight: Axial, points 9.5 to 21
5.9
Strength to Weight: Bending, points 11 to 18
8.3
Thermal Shock Resistance, points 16 to 34
7.4

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 26.6 to 29
90.5 to 91.4
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.030
6.8 to 7.2
Silver (Ag), % 71 to 73
1.8 to 2.2
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0
0 to 0.15