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C12900 Copper vs. ASTM B628 Ag-Cu

C12900 copper belongs to the copper alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. 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 C12900 copper and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
83
Elongation at Break, % 2.8 to 50
1.1 to 17
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 43
31
Shear Strength, MPa 150 to 210
210 to 430
Tensile Strength: Ultimate (UTS), MPa 220 to 420
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 210
140
Melting Completion (Liquidus), °C 1080
780
Melting Onset (Solidus), °C 1030
780
Specific Heat Capacity, J/kg-K 390
280
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
84
Electrical Conductivity: Equal Weight (Specific), % IACS 98
75

Otherwise Unclassified Properties

Density, g/cm3 9.0
10

Common Calculations

Stiffness to Weight: Axial, points 7.2
4.6
Stiffness to Weight: Bending, points 18
14
Strength to Weight: Axial, points 6.8 to 13
9.5 to 21
Strength to Weight: Bending, points 9.1 to 14
11 to 18
Thermal Shock Resistance, points 7.8 to 15
16 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0 to 0.0030
0
Arsenic (As), % 0 to 0.012
0
Bismuth (Bi), % 0 to 0.0030
0
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 99.88 to 100
26.6 to 29
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0 to 0.0040
0 to 0.030
Nickel (Ni), % 0 to 0.050
0 to 0.010
Phosphorus (P), % 0
0 to 0.030
Silver (Ag), % 0 to 0.054
71 to 73
Tellurium (Te), % 0 to 0.025
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.21