ASTM B563 Pd-Ag-Cu vs. S31730 Stainless Steel

ASTM B563 Pd-Ag-Cu belongs to the otherwise unclassified metals classification, while S31730 stainless steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (16, 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 S31730 stainless steel.

ASTM B563 Palladium-Silver-Copper Electrical Contact Alloy UNS S31730 Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		7.0 to 17
Elongation at Break, %		40

Poisson's Ratio		0.37
Poisson's Ratio		0.28

Shear Modulus, GPa		37
Shear Modulus, GPa		77

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

Tensile Strength: Ultimate (UTS), MPa		760 to 1170
Tensile Strength: Ultimate (UTS), MPa		540

Thermal Properties

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		290

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		1390

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		16

Otherwise Unclassified Properties

Density, g/cm³		11
Density, g/cm³		8.0

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		24

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

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

Thermal Shock Resistance, points		39 to 61
Thermal Shock Resistance, points		12

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.030

Chromium (Cr), %		0
Chromium (Cr), %		17 to 19

Copper (Cu), %		15.5 to 16.5
Copper (Cu), %		4.0 to 5.0

Iron (Fe), %		0
Iron (Fe), %		52.4 to 61

Manganese (Mn), %		0
Manganese (Mn), %		0 to 2.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		3.0 to 4.0

Nickel (Ni), %		0.8 to 1.2
Nickel (Ni), %		15 to 16.5

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.045

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

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.040

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

Sulfur (S), %		0
Sulfur (S), %		0 to 0.010

Residuals, %		0 to 0.4
Residuals, %		0