ASTM B563 Pd-Ag-Cu vs. R31537 Cobalt

ASTM B563 Pd-Ag-Cu belongs to the otherwise unclassified metals classification, while R31537 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 R31537 cobalt.

ASTM B563 Palladium-Silver-Copper Electrical Contact Alloy Low Carbon Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 1, ISO 5832-12 Alloy 1, R31537)

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, %		14 to 23

Poisson's Ratio		0.37
Poisson's Ratio		0.29

Shear Modulus, GPa		37
Shear Modulus, GPa		87

Tensile Strength: Ultimate (UTS), MPa		760 to 1170
Tensile Strength: Ultimate (UTS), MPa		1000 to 1340

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		1360

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		1290

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		450

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		5.6 to 6.7
Electrical Conductivity: Equal Volume, % IACS		2.0

Electrical Conductivity: Equal Weight (Specific), % IACS		4.6 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS		2.1

Otherwise Unclassified Properties

Density, g/cm³		11
Density, g/cm³		8.4

Common Calculations

Stiffness to Weight: Axial, points		5.2
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		19 to 30
Strength to Weight: Axial, points		33 to 44

Strength to Weight: Bending, points		17 to 22
Strength to Weight: Bending, points		26 to 32

Thermal Shock Resistance, points		39 to 61
Thermal Shock Resistance, points		24 to 32

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.14

Chromium (Cr), %		0
Chromium (Cr), %		26 to 30

Cobalt (Co), %		0
Cobalt (Co), %		58.9 to 69

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

Iron (Fe), %		0
Iron (Fe), %		0 to 0.75

Manganese (Mn), %		0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		5.0 to 7.0

Nickel (Ni), %		0.8 to 1.2
Nickel (Ni), %		0 to 1.0

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.25

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 1.0

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

Residuals, %		0 to 0.4
Residuals, %		0