# Grade Ti-Pd8A Cast Titanium

Grade Ti-Pd8A titanium is a titanium alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has a fairly high embodied energy among the cast titaniums in the database.

The graph bars on the material properties cards below compare grade Ti-Pd8A 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

200

Elastic (Young's, Tensile) Modulus

110 *GPa* 15 *x 10 ^{6} psi*

Elongation at Break

13 *%*

Fatigue Strength

260 *MPa* 38 *x 10 ^{3} psi*

Poisson's Ratio

0.32

Rockwell C Hardness

21

Shear Modulus

40 *GPa* 5.9 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

500 *MPa* 73 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

430 *MPa* 63 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

420 *J/g*

Maximum Temperature: Mechanical

320 *°C* 600 *°F*

Melting Completion (Liquidus)

1660 *°C* 3020 *°F*

Melting Onset (Solidus)

1610 *°C* 2930 *°F*

Specific Heat Capacity

540 *J/kg-K* 0.13 *BTU/lb-°F*

Thermal Conductivity

21 *W/m-K* 12 *BTU/h-ft-°F*

Thermal Expansion

8.7 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

3.5 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

6.9 *% IACS*

## Otherwise Unclassified Properties

Density

4.5 *g/cm ^{3}* 280

*lb/ft*

^{3}Embodied Carbon

49 *kg CO _{2}/kg material*

Embodied Energy

840 *MJ/kg* 360 *x 10 ^{3} BTU/lb*

Embodied Water

520 *L/kg* 62 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

65 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

880 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

35 *points*

Strength to Weight: Axial

31 *points*

Strength to Weight: Bending

31 *points*

Thermal Diffusivity

8.6 *mm ^{2}/s*

Thermal Shock Resistance

39 *points*

## Alloy Composition

Ti | 98.8 to 99.9 | |

Pd | 0.12 to 0.3 | |

O | 0 to 0.4 | |

Fe | 0 to 0.25 | |

C | 0 to 0.1 | |

Ni | 0 to 0.050 | |

H | 0 to 0.015 | |

res. | 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