# Grade 17 (R52252) Titanium

Grade 17 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. R52252 is the UNS number for this material. Additionally, the ASTM designation is Titanium Grade 17.

It has a moderately high electrical conductivity among wrought titaniums. In addition, it has a fairly low tensile strength and the highest thermal conductivity.

The graph bars on the material properties cards below compare grade 17 titanium to: wrought 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

Elastic (Young's, Tensile) Modulus

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

Elongation at Break

27 *%*

Fatigue Strength

160 *MPa* 23 *x 10 ^{3} psi*

Poisson's Ratio

0.32

Reduction in Area

34 *%*

Shear Modulus

38 *GPa* 5.5 *x 10 ^{6} psi*

Shear Strength

180 *MPa* 25 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

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

Tensile Strength: Yield (Proof)

210 *MPa* 31 *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

23 *W/m-K* 13 *BTU/h-ft-°F*

Thermal Expansion

8.7 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

3.7 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

7.3 *% 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)

68 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

220 *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

9.3 *mm ^{2}/s*

Thermal Shock Resistance

21 *points*

## Alloy Composition

Ti | 99.015 to 99.96 | |

Fe | 0 to 0.2 | |

O | 0 to 0.18 | |

Pd | 0.040 to 0.080 | |

C | 0 to 0.080 | |

N | 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 B861: Standard Specification for Titanium and Titanium Alloy Seamless Pipe

ASTM B381: Standard Specification for Titanium and Titanium Alloy Forgings

ASTM B265: Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate

ASTM B348: Standard Specification for Titanium and Titanium Alloy Bars and Billets

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

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

Aerospace Materials, Brian Cantor et al. (editors), 2001

Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010