ASTM B617 Coin Silver vs. C99500 Copper

ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while C99500 copper belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is C99500 copper.

ASTM B617 Coin Silver Electrical Contact Alloy UNS C99500 Nickel-Iron Copper

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		75
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		1.1 to 22
Elongation at Break, %		13

Poisson's Ratio		0.37
Poisson's Ratio		0.34

Shear Modulus, GPa		28
Shear Modulus, GPa		45

Tensile Strength: Ultimate (UTS), MPa		290 to 520
Tensile Strength: Ultimate (UTS), MPa		540

Thermal Properties

Latent Heat of Fusion, J/g		120
Latent Heat of Fusion, J/g		240

Melting Completion (Liquidus), °C		870
Melting Completion (Liquidus), °C		1090

Melting Onset (Solidus), °C		780
Melting Onset (Solidus), °C		1040

Specific Heat Capacity, J/kg-K		250
Specific Heat Capacity, J/kg-K		400

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		83
Electrical Conductivity: Equal Volume, % IACS		10

Electrical Conductivity: Equal Weight (Specific), % IACS		72
Electrical Conductivity: Equal Weight (Specific), % IACS		10

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.7

Common Calculations

Stiffness to Weight: Axial, points		4.1
Stiffness to Weight: Axial, points		7.7

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

Strength to Weight: Axial, points		7.7 to 14
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		9.3 to 14
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		14 to 25
Thermal Shock Resistance, points		19

Alloy Composition

Aluminum (Al), %		0 to 0.0050
Aluminum (Al), %		0.5 to 2.0

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

Copper (Cu), %		9.0 to 10.4
Copper (Cu), %		82.5 to 92

Iron (Fe), %		0 to 0.050
Iron (Fe), %		3.0 to 5.0

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0 to 0.25

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.5

Nickel (Ni), %		0 to 0.010
Nickel (Ni), %		3.5 to 5.5

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0

Silicon (Si), %		0
Silicon (Si), %		0.5 to 2.0

Silver (Ag), %		89.6 to 91
Silver (Ag), %		0

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		0.5 to 2.0

Residuals, %		0
Residuals, %		0 to 0.3