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ASTM B628 Ag-Cu vs. CC212E Bronze

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while CC212E bronze 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 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is CC212E bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
130
Elongation at Break, % 1.1 to 17
20
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 31
47
Tensile Strength: Ultimate (UTS), MPa 350 to 760
710

Thermal Properties

Latent Heat of Fusion, J/g 140
230
Melting Completion (Liquidus), °C 780
1080
Melting Onset (Solidus), °C 780
1020
Specific Heat Capacity, J/kg-K 280
440
Thermal Expansion, µm/m-K 19
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 75
3.3

Otherwise Unclassified Properties

Density, g/cm3 10
8.2

Common Calculations

Stiffness to Weight: Axial, points 4.6
8.5
Stiffness to Weight: Bending, points 14
20
Strength to Weight: Axial, points 9.5 to 21
24
Strength to Weight: Bending, points 11 to 18
21
Thermal Shock Resistance, points 16 to 34
22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
7.0 to 9.0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 26.6 to 29
68 to 77
Iron (Fe), % 0 to 0.050
2.0 to 4.0
Lead (Pb), % 0 to 0.030
0 to 0.050
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0
8.0 to 15
Nickel (Ni), % 0 to 0.010
1.5 to 4.5
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 71 to 73
0
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.060
0 to 1.0
Residuals, % 0 to 0.21
0