ASTM B628 Ag-Cu vs. C96800 Copper

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while C96800 copper 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 (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is C96800 copper.

ASTM B628 Silver-Copper Eutectic Electrical Contact Alloy UNS C96800 Nickel-Tin Copper

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		83
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		1.1 to 17
Elongation at Break, %		3.4

Poisson's Ratio		0.36
Poisson's Ratio		0.34

Shear Modulus, GPa		31
Shear Modulus, GPa		46

Tensile Strength: Ultimate (UTS), MPa		350 to 760
Tensile Strength: Ultimate (UTS), MPa		1010

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		220

Melting Completion (Liquidus), °C		780
Melting Completion (Liquidus), °C		1120

Melting Onset (Solidus), °C		780
Melting Onset (Solidus), °C		1060

Specific Heat Capacity, J/kg-K		280
Specific Heat Capacity, J/kg-K		390

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		84
Electrical Conductivity: Equal Volume, % IACS		10

Electrical Conductivity: Equal Weight (Specific), % IACS		75
Electrical Conductivity: Equal Weight (Specific), % IACS		10

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.9

Common Calculations

Stiffness to Weight: Axial, points		4.6
Stiffness to Weight: Axial, points		7.6

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		19

Strength to Weight: Axial, points		9.5 to 21
Strength to Weight: Axial, points		32

Strength to Weight: Bending, points		11 to 18
Strength to Weight: Bending, points		25

Thermal Shock Resistance, points		16 to 34
Thermal Shock Resistance, points		35

Alloy Composition

Aluminum (Al), %		0 to 0.0050
Aluminum (Al), %		0 to 0.1

Antimony (Sb), %		0
Antimony (Sb), %		0 to 0.020

Cadmium (Cd), %		0 to 0.050
Cadmium (Cd), %		0

Copper (Cu), %		26.6 to 29
Copper (Cu), %		87.1 to 90.5

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0 to 0.5

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0 to 0.0050

Manganese (Mn), %		0
Manganese (Mn), %		0.050 to 0.3

Nickel (Ni), %		0 to 0.010
Nickel (Ni), %		9.5 to 10.5

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.0050

Silver (Ag), %		71 to 73
Silver (Ag), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.0025

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5