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Grade Ti-Pd18 Cast Titanium

Grade Ti-Pd18 titanium is a titanium alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has a moderately high embodied energy among the cast titaniums in the database.

The graph bars on the material properties cards below compare grade Ti-Pd18 titanium to: cast titaniums (top), all titanium alloys (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

Brinell Hardness

320

Elastic (Young's, Tensile) Modulus

110 GPa 15 x 106 psi

Elongation at Break

17 %

Fatigue Strength

350 MPa 51 x 103 psi

Poisson's Ratio

0.32

Rockwell C Hardness

34

Shear Modulus

40 GPa 5.8 x 106 psi

Tensile Strength: Ultimate (UTS)

710 MPa 100 x 103 psi

Tensile Strength: Yield (Proof)

540 MPa 78 x 103 psi

Thermal Properties

Latent Heat of Fusion

410 J/g

Maximum Temperature: Mechanical

330 °C 630 °F

Melting Completion (Liquidus)

1640 °C 2980 °F

Melting Onset (Solidus)

1590 °C 2890 °F

Specific Heat Capacity

550 J/kg-K 0.13 BTU/lb-°F

Thermal Conductivity

8.2 W/m-K 4.7 BTU/h-ft-°F

Thermal Expansion

9.1 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.4 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.7 % IACS

Otherwise Unclassified Properties

Density

4.5 g/cm3 280 lb/ft3

Embodied Carbon

41 kg CO2/kg material

Embodied Energy

670 MJ/kg 290 x 103 BTU/lb

Embodied Water

270 L/kg 33 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 MJ/m3

Resilience: Unit (Modulus of Resilience)

1380 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

35 points

Strength to Weight: Axial

44 points

Strength to Weight: Bending

39 points

Thermal Diffusivity

3.3 mm2/s

Thermal Shock Resistance

52 points

Alloy Composition

Titanium (Ti) 92.5 to 95.5
Aluminum (Al) 2.5 to 3.5
Vanadium (V) 2.0 to 3.0
Iron (Fe) 0 to 0.25
Oxygen (O) 0 to 0.15
Palladium (Pd) 0.040 to 0.080
Carbon (C) 0 to 0.1
Nickel (Ni) 0 to 0.050
Hydrogen (H) 0 to 0.015
Residuals 0 to 0.4

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

Followup Questions

Similar Alloys

Further Reading

ASTM B367: Standard Specification for Titanium and Titanium Alloy Castings

Titanium Alloys: Modelling of Microstructure, Properties, and Applications, Wei Sha and Savko Malinov, 2009

Titanium and Titanium Alloys: Fundamentals and Applications, Christoph Leyens and Manfred Peters (editors), 2003

Titanium, 2nd ed., G. Lutjering and J. C. Williams, 2007