# Grade Ti-Pd17 Cast Titanium

Grade Ti-Pd17 titanium is a titanium alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has the highest ductility and the lowest tensile strength among cast titaniums.

The graph bars on the material properties cards below compare grade Ti-Pd17 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

22 *%*

Fatigue Strength

140 *MPa* 20 *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)

270 *MPa* 39 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

190 *MPa* 28 *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

3.6 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

7.1 *% IACS*

## Otherwise Unclassified Properties

Density

4.5 *g/cm ^{3}* 280

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

600 *MJ/kg* 260 *x 10 ^{3} BTU/lb*

Embodied Water

230 *L/kg* 27 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

55 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

180 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

35 *points*

Strength to Weight: Axial

17 *points*

Strength to Weight: Bending

21 *points*

Thermal Diffusivity

8.8 *mm ^{2}/s*

Thermal Shock Resistance

21 *points*

## Alloy Composition

Ti | 98.9 to 99.96 | |

O | 0 to 0.25 | |

Fe | 0 to 0.2 | |

Pd | 0.040 to 0.080 | |

C | 0 to 0.1 | |

Ni | 0 to 0.030 | |

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

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