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Commercially Pure Palladium

Commercially pure palladium is a precious metal alloy formulated for use in electrical contacts.

The properties of commercially pure palladium include four common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare commercially pure palladium to: precious metal electrical contact alloys (top), all alloys in the same category (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

120 GPa 18 x 106 psi

Elongation at Break

1.1 to 11 %

Knoop Hardness

68 to 130

Poisson's Ratio


Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

120 to 200 MPa 17 to 29 x 103 psi

Tensile Strength: Ultimate (UTS)

200 to 380 MPa 28 to 55 x 103 psi

Thermal Properties

Latent Heat of Fusion

160 J/g

Melting Completion (Liquidus)

1550 °C 2830 °F

Melting Onset (Solidus)

1550 °C 2830 °F

Specific Heat Capacity

240 J/kg-K 0.057 BTU/lb-°F

Thermal Expansion

12 µm/m-K

Other Material Properties


12 g/cm3 750 lb/ft3

Electrical Conductivity: Equal Volume

16 % IACS

Electrical Conductivity: Equal Weight (Specific)

12 % IACS

Common Calculations

Stiffness to Weight: Axial

5.6 points

Stiffness to Weight: Bending

14 points

Strength to Weight: Axial

4.5 to 8.8 points

Strength to Weight: Bending

6.2 to 9.7 points

Thermal Shock Resistance

9.8 to 19 points

Alloy Composition

Palladium (Pd)Pd 99.8 to 100
Residualsres. 0 to 0.2

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM B683: Standard Specification for Pure Palladium Electrical Contact Material