ASTM B563 Pd-Ag-Cu vs. SAE-AISI 5140 Steel

ASTM B563 Pd-Ag-Cu belongs to the otherwise unclassified metals classification, while SAE-AISI 5140 steel belongs to the iron 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 SAE-AISI 5140 steel.

ASTM B563 Palladium-Silver-Copper Electrical Contact Alloy SAE-AISI 5140 (SCr440, G51400) Chromium Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		7.0 to 17
Elongation at Break, %		12 to 29

Poisson's Ratio		0.37
Poisson's Ratio		0.29

Shear Modulus, GPa		37
Shear Modulus, GPa		73

Shear Strength, MPa		470 to 690
Shear Strength, MPa		360 to 600

Tensile Strength: Ultimate (UTS), MPa		760 to 1170
Tensile Strength: Ultimate (UTS), MPa		560 to 970

Thermal Properties

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		250

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		1460

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		1420

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		13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		5.6 to 6.7
Electrical Conductivity: Equal Volume, % IACS		7.2

Electrical Conductivity: Equal Weight (Specific), % IACS		4.6 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS		8.3

Otherwise Unclassified Properties

Density, g/cm³		11
Density, g/cm³		7.8

Common Calculations

Stiffness to Weight: Axial, points		5.2
Stiffness to Weight: Axial, points		13

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		20 to 34

Strength to Weight: Bending, points		17 to 22
Strength to Weight: Bending, points		19 to 28

Thermal Shock Resistance, points		39 to 61
Thermal Shock Resistance, points		16 to 29

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0.38 to 0.43

Chromium (Cr), %		0
Chromium (Cr), %		0.7 to 0.9

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

Iron (Fe), %		0
Iron (Fe), %		97.3 to 98.1

Manganese (Mn), %		0
Manganese (Mn), %		0.7 to 0.9

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

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

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.035

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

Silicon (Si), %		0
Silicon (Si), %		0.15 to 0.35

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

Sulfur (S), %		0
Sulfur (S), %		0 to 0.040

Residuals, %		0 to 0.4
Residuals, %		0