ASTM B563 Pd-Ag-Cu vs. R30012 Cobalt

ASTM B563 Pd-Ag-Cu belongs to the otherwise unclassified metals classification, while R30012 cobalt belongs to the cobalt alloys. There are 18 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 R30012 cobalt.

ASTM B563 Palladium-Silver-Copper Electrical Contact Alloy UNS R30012 Co-Cr-W Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		220

Elongation at Break, %		7.0 to 17
Elongation at Break, %		1.0

Poisson's Ratio		0.37
Poisson's Ratio		0.28

Shear Modulus, GPa		37
Shear Modulus, GPa		86

Tensile Strength: Ultimate (UTS), MPa		760 to 1170
Tensile Strength: Ultimate (UTS), MPa		830

Thermal Properties

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		1470

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		1280

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		440

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		5.6 to 6.7
Electrical Conductivity: Equal Volume, % IACS		1.8

Electrical Conductivity: Equal Weight (Specific), % IACS		4.6 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS		1.8

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		14

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		19 to 30
Strength to Weight: Axial, points		26

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

Thermal Shock Resistance, points		39 to 61
Thermal Shock Resistance, points		23

Alloy Composition

Carbon (C), %		0
Carbon (C), %		1.4 to 2.0

Chromium (Cr), %		0
Chromium (Cr), %		27 to 32

Cobalt (Co), %		0
Cobalt (Co), %		47.5 to 64.1

Copper (Cu), %		15.5 to 16.5
Copper (Cu), %		0

Iron (Fe), %		0
Iron (Fe), %		0 to 3.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 1.0

Nickel (Ni), %		0.8 to 1.2
Nickel (Ni), %		0 to 3.0

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

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

Silicon (Si), %		0
Silicon (Si), %		0 to 2.0

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

Tungsten (W), %		0
Tungsten (W), %		7.5 to 9.5

Residuals, %		0 to 0.4
Residuals, %		0