C99300 Copper vs. ASTM B617 Coin Silver

C99300 copper belongs to the copper alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is C99300 copper and the bottom bar is ASTM B617 coin silver.

UNS C99300 Nickel-Aluminum Copper ASTM B617 Coin Silver Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		2.0
Elongation at Break, %		1.1 to 22

Poisson's Ratio		0.33
Poisson's Ratio		0.37

Shear Modulus, GPa		46
Shear Modulus, GPa		28

Tensile Strength: Ultimate (UTS), MPa		660
Tensile Strength: Ultimate (UTS), MPa		290 to 520

Thermal Properties

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

Melting Completion (Liquidus), °C		1080
Melting Completion (Liquidus), °C		870

Melting Onset (Solidus), °C		1070
Melting Onset (Solidus), °C		780

Specific Heat Capacity, J/kg-K		450
Specific Heat Capacity, J/kg-K		250

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		9.0
Electrical Conductivity: Equal Volume, % IACS		83

Electrical Conductivity: Equal Weight (Specific), % IACS		9.8
Electrical Conductivity: Equal Weight (Specific), % IACS		72

Otherwise Unclassified Properties

Density, g/cm³		8.2
Density, g/cm³		10

Common Calculations

Stiffness to Weight: Axial, points		8.3
Stiffness to Weight: Axial, points		4.1

Stiffness to Weight: Bending, points		20
Stiffness to Weight: Bending, points		14

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		7.7 to 14

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		9.3 to 14

Thermal Shock Resistance, points		22
Thermal Shock Resistance, points		14 to 25

Alloy Composition

Aluminum (Al), %		10.7 to 11.5
Aluminum (Al), %		0 to 0.0050

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

Cobalt (Co), %		1.0 to 2.0
Cobalt (Co), %		0

Copper (Cu), %		68.6 to 74.4
Copper (Cu), %		9.0 to 10.4

Iron (Fe), %		0.4 to 1.0
Iron (Fe), %		0 to 0.050

Lead (Pb), %		0 to 0.020
Lead (Pb), %		0 to 0.030

Nickel (Ni), %		13.5 to 16.5
Nickel (Ni), %		0 to 0.010

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

Silicon (Si), %		0 to 0.020
Silicon (Si), %		0

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

Tin (Sn), %		0 to 0.050
Tin (Sn), %		0

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

Residuals, %		0
Residuals, %		0 to 0.060