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Full-Hard Commercially Pure Palladium

Full-hard palladium is commercially pure palladium in the full-hard temper. It has the highest strength compared to the other variants of commercially pure palladium. The graph bars on the material properties cards below compare full-hard 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

Knoop Hardness

130

Poisson's Ratio

0.39

Shear Modulus

43 GPa 6.3 x 106 psi

Tensile Strength: Ultimate (UTS)

380 MPa 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

Density

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

8.8 points

Strength to Weight: Bending

9.7 points

Thermal Shock Resistance

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