ASTM B563 Pd-Ag-Cu vs. C51900 Bronze

ASTM B563 Pd-Ag-Cu belongs to the otherwise unclassified metals classification, while C51900 bronze belongs to the copper alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 C51900 bronze.

ASTM B563 Palladium-Silver-Copper Electrical Contact Alloy UNS C51900 (CW452K) Phosphor Bronze

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		7.0 to 17
Elongation at Break, %		14 to 29

Poisson's Ratio		0.37
Poisson's Ratio		0.34

Shear Modulus, GPa		37
Shear Modulus, GPa		42

Shear Strength, MPa		470 to 690
Shear Strength, MPa		320 to 370

Tensile Strength: Ultimate (UTS), MPa		760 to 1170
Tensile Strength: Ultimate (UTS), MPa		380 to 620

Thermal Properties

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		200

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		1040

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

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		380

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		5.6 to 6.7
Electrical Conductivity: Equal Volume, % IACS		14

Electrical Conductivity: Equal Weight (Specific), % IACS		4.6 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS		14

Otherwise Unclassified Properties

Density, g/cm³		11
Density, g/cm³		8.8

Common Calculations

Stiffness to Weight: Axial, points		5.2
Stiffness to Weight: Axial, points		7.0

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

Strength to Weight: Axial, points		19 to 30
Strength to Weight: Axial, points		12 to 19

Strength to Weight: Bending, points		17 to 22
Strength to Weight: Bending, points		13 to 18

Thermal Shock Resistance, points		39 to 61
Thermal Shock Resistance, points		14 to 22

Alloy Composition

Copper (Cu), %		15.5 to 16.5
Copper (Cu), %		91.7 to 95

Iron (Fe), %		0
Iron (Fe), %		0 to 0.1

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

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

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

Phosphorus (P), %		0
Phosphorus (P), %		0.030 to 0.35

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

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

Tin (Sn), %		0
Tin (Sn), %		5.0 to 7.0

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.3

Residuals, %		0
Residuals, %		0 to 0.5