ASTM B617 Coin Silver vs. C24000 Brass

ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while C24000 brass belongs to the copper alloys. There are 17 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 ASTM B617 coin silver and the bottom bar is C24000 brass.

ASTM B617 Coin Silver Electrical Contact Alloy UNS C24000 (CW503L) Low Brass

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		75
Elastic (Young's, Tensile) Modulus, GPa		110

Poisson's Ratio		0.37
Poisson's Ratio		0.32

Shear Modulus, GPa		28
Shear Modulus, GPa		42

Tensile Strength: Ultimate (UTS), MPa		290 to 520
Tensile Strength: Ultimate (UTS), MPa		310 to 640

Thermal Properties

Latent Heat of Fusion, J/g		120
Latent Heat of Fusion, J/g		190

Melting Completion (Liquidus), °C		870
Melting Completion (Liquidus), °C		1000

Melting Onset (Solidus), °C		780
Melting Onset (Solidus), °C		970

Specific Heat Capacity, J/kg-K		250
Specific Heat Capacity, J/kg-K		390

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		83
Electrical Conductivity: Equal Volume, % IACS		32

Electrical Conductivity: Equal Weight (Specific), % IACS		72
Electrical Conductivity: Equal Weight (Specific), % IACS		34

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.5

Common Calculations

Stiffness to Weight: Axial, points		4.1
Stiffness to Weight: Axial, points		7.2

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		10 to 21

Strength to Weight: Bending, points		9.3 to 14
Strength to Weight: Bending, points		12 to 20

Thermal Shock Resistance, points		14 to 25
Thermal Shock Resistance, points		10 to 22

Alloy Composition

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

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

Copper (Cu), %		9.0 to 10.4
Copper (Cu), %		78.5 to 81.5

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

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0 to 0.050

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

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

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

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		18.2 to 21.5

Residuals, %		0 to 0.060
Residuals, %		0 to 0.2