C19025 Copper vs. ASTM B540 Palladium

C19025 copper belongs to the copper alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is C19025 copper and the bottom bar is ASTM B540 palladium.

UNS C19025 Nickel-Tin Copper ASTM B540 Palladium Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		8.0 to 17
Elongation at Break, %		1.1 to 14

Poisson's Ratio		0.34
Poisson's Ratio		0.38

Shear Modulus, GPa		43
Shear Modulus, GPa		39

Shear Strength, MPa		300 to 360
Shear Strength, MPa		500 to 700

Tensile Strength: Ultimate (UTS), MPa		480 to 620
Tensile Strength: Ultimate (UTS), MPa		830 to 1240

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		140

Melting Completion (Liquidus), °C		1080
Melting Completion (Liquidus), °C		1220

Melting Onset (Solidus), °C		1020
Melting Onset (Solidus), °C		1020

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		240

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		40
Electrical Conductivity: Equal Volume, % IACS		4.9 to 5.5

Electrical Conductivity: Equal Weight (Specific), % IACS		40
Electrical Conductivity: Equal Weight (Specific), % IACS		3.5 to 3.9

Otherwise Unclassified Properties

Density, g/cm³		8.9
Density, g/cm³		13

Common Calculations

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		4.7

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		12

Strength to Weight: Axial, points		15 to 19
Strength to Weight: Axial, points		18 to 27

Strength to Weight: Bending, points		15 to 18
Strength to Weight: Bending, points		15 to 20

Thermal Shock Resistance, points		17 to 22
Thermal Shock Resistance, points		41 to 61

Alloy Composition

Copper (Cu), %		97.1 to 98.5
Copper (Cu), %		13.5 to 14.5

Gold (Au), %		0
Gold (Au), %		9.5 to 10.5

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

Palladium (Pd), %		0
Palladium (Pd), %		34 to 36

Phosphorus (P), %		0.030 to 0.070
Phosphorus (P), %		0

Platinum (Pt), %		0
Platinum (Pt), %		9.5 to 10.5

Silver (Ag), %		0
Silver (Ag), %		29 to 31

Tin (Sn), %		0.7 to 1.1
Tin (Sn), %		0

Zinc (Zn), %		0 to 0.2
Zinc (Zn), %		0.8 to 1.2

Residuals, %		0
Residuals, %		0 to 0.3