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C18600 Copper vs. ASTM B628 Ag-Cu

C18600 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 (10, in this case) are not shown.

For each property being compared, the top bar is C18600 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, % 8.0 to 11
1.1 to 17
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 44
31
Shear Strength, MPa 310 to 340
210 to 430
Tensile Strength: Ultimate (UTS), MPa 520 to 580
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 210
140
Melting Completion (Liquidus), °C 1090
780
Melting Onset (Solidus), °C 1070
780
Specific Heat Capacity, J/kg-K 390
280
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 70
84
Electrical Conductivity: Equal Weight (Specific), % IACS 71
75

Otherwise Unclassified Properties

Density, g/cm3 8.9
10

Common Calculations

Stiffness to Weight: Axial, points 7.3
4.6
Stiffness to Weight: Bending, points 18
14
Strength to Weight: Axial, points 16 to 18
9.5 to 21
Strength to Weight: Bending, points 16 to 17
11 to 18
Thermal Shock Resistance, points 19 to 20
16 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Chromium (Cr), % 0.1 to 1.0
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 96.5 to 99.55
26.6 to 29
Iron (Fe), % 0.25 to 0.8
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nickel (Ni), % 0 to 0.25
0 to 0.010
Phosphorus (P), % 0
0 to 0.030
Silver (Ag), % 0
71 to 73
Titanium (Ti), % 0.050 to 0.5
0
Zinc (Zn), % 0
0 to 0.060
Zirconium (Zr), % 0.050 to 0.4
0
Residuals, % 0
0 to 0.21