ASTM B563 Pd-Ag-Cu vs. C68700 Brass

ASTM B563 Pd-Ag-Cu belongs to the otherwise unclassified metals classification, while C68700 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 B563 Pd-Ag-Cu and the bottom bar is C68700 brass.

ASTM B563 Palladium-Silver-Copper Electrical Contact Alloy UNS C68700 (CW702R) Aluminum Brass

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		110

Poisson's Ratio		0.37
Poisson's Ratio		0.32

Shear Modulus, GPa		37
Shear Modulus, GPa		41

Tensile Strength: Ultimate (UTS), MPa		760 to 1170
Tensile Strength: Ultimate (UTS), MPa		390

Thermal Properties

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		190

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		970

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		930

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		400

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		5.6 to 6.7
Electrical Conductivity: Equal Volume, % IACS		23

Electrical Conductivity: Equal Weight (Specific), % IACS		4.6 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS		25

Otherwise Unclassified Properties

Density, g/cm³		11
Density, g/cm³		8.3

Common Calculations

Stiffness to Weight: Axial, points		5.2
Stiffness to Weight: Axial, points		7.3

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

Strength to Weight: Axial, points		19 to 30
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		17 to 22
Strength to Weight: Bending, points		14

Thermal Shock Resistance, points		39 to 61
Thermal Shock Resistance, points		13

Alloy Composition

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Aluminum (Al), %		0
Aluminum (Al), %		1.8 to 2.5

Arsenic (As), %		0
Arsenic (As), %		0.020 to 0.1

Copper (Cu), %		15.5 to 16.5
Copper (Cu), %		76 to 79

Iron (Fe), %		0
Iron (Fe), %		0 to 0.060

Lead (Pb), %		0
Lead (Pb), %		0 to 0.070

Nickel (Ni), %		0.8 to 1.2
Nickel (Ni), %		0

Palladium (Pd), %		43 to 45
Palladium (Pd), %		0

Platinum (Pt), %		0.8 to 1.2
Platinum (Pt), %		0

Silver (Ag), %		37 to 39
Silver (Ag), %		0

Zinc (Zn), %		0
Zinc (Zn), %		17.8 to 22.2

Residuals, %		0 to 0.4
Residuals, %		0 to 0.5