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ASTM B628 Ag-Cu vs. Commercially Pure Silver

Both ASTM B628 Ag-Cu and commercially pure silver are otherwise unclassified metals. They have 72% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is commercially pure silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
71
Elongation at Break, % 1.1 to 17
1.1 to 29
Poisson's Ratio 0.36
0.37
Shear Modulus, GPa 31
26
Shear Strength, MPa 210 to 430
120 to 190
Tensile Strength: Ultimate (UTS), MPa 350 to 760
190 to 340

Thermal Properties

Latent Heat of Fusion, J/g 140
110
Melting Completion (Liquidus), °C 780
960
Melting Onset (Solidus), °C 780
960
Specific Heat Capacity, J/kg-K 280
240
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
100
Electrical Conductivity: Equal Weight (Specific), % IACS 75
87

Otherwise Unclassified Properties

Density, g/cm3 10
10

Common Calculations

Stiffness to Weight: Axial, points 4.6
3.8
Stiffness to Weight: Bending, points 14
13
Strength to Weight: Axial, points 9.5 to 21
4.9 to 8.9
Strength to Weight: Bending, points 11 to 18
6.9 to 10
Thermal Shock Resistance, points 16 to 34
9.5 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 26.6 to 29
0
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
0
Silver (Ag), % 71 to 73
99.9 to 100
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0
0 to 0.1

Comparable Variants