C82200 Copper vs. ASTM B617 Coin Silver

C82200 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 C82200 copper and the bottom bar is ASTM B617 coin silver.

UNS C82200 (Alloy 14C) Nickel-Beryllium 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, %		8.0 to 20
Elongation at Break, %		1.1 to 22

Poisson's Ratio		0.34
Poisson's Ratio		0.37

Shear Modulus, GPa		44
Shear Modulus, GPa		28

Tensile Strength: Ultimate (UTS), MPa		390 to 660
Tensile Strength: Ultimate (UTS), MPa		290 to 520

Thermal Properties

Latent Heat of Fusion, J/g		220
Latent Heat of Fusion, J/g		120

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

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

Specific Heat Capacity, J/kg-K		390
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		45
Electrical Conductivity: Equal Volume, % IACS		83

Electrical Conductivity: Equal Weight (Specific), % IACS		46
Electrical Conductivity: Equal Weight (Specific), % IACS		72

Otherwise Unclassified Properties

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

Common Calculations

Stiffness to Weight: Axial, points		7.4
Stiffness to Weight: Axial, points		4.1

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		14

Strength to Weight: Axial, points		12 to 20
Strength to Weight: Axial, points		7.7 to 14

Strength to Weight: Bending, points		13 to 19
Strength to Weight: Bending, points		9.3 to 14

Thermal Shock Resistance, points		14 to 23
Thermal Shock Resistance, points		14 to 25

Alloy Composition

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

Beryllium (Be), %		0.35 to 0.8
Beryllium (Be), %		0

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

Cobalt (Co), %		0 to 0.3
Cobalt (Co), %		0

Copper (Cu), %		97.4 to 98.7
Copper (Cu), %		9.0 to 10.4

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

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

Nickel (Ni), %		1.0 to 2.0
Nickel (Ni), %		0 to 0.010

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

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

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

Residuals, %		0
Residuals, %		0 to 0.060