# Grade 36 (R58450) Titanium

Grade 36 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. R58450 is the UNS number for this material. Additionally, the ASTM designation is Titanium Grade 36.

It has the highest density and a fairly high embodied energy among wrought titaniums.

The graph bars on the material properties cards below compare grade 36 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

11 *%*

Fatigue Strength

300 *MPa* 44 *x 10 ^{3} psi*

Poisson's Ratio

0.36

Shear Modulus

39 *GPa* 5.7 *x 10 ^{6} psi*

Shear Strength

320 *MPa* 46 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

530 *MPa* 77 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

520 *MPa* 75 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

370 *J/g*

Maximum Temperature: Mechanical

320 *°C* 600 *°F*

Melting Completion (Liquidus)

2020 *°C* 3670 *°F*

Melting Onset (Solidus)

1950 *°C* 3550 *°F*

Specific Heat Capacity

420 *J/kg-K* 0.1 *BTU/lb-°F*

Thermal Expansion

8.1 *µm/m-K*

## Otherwise Unclassified Properties

Density

6.3 *g/cm ^{3}* 390

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

920 *MJ/kg* 400 *x 10 ^{3} BTU/lb*

Embodied Water

130 *L/kg* 15 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

59 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

1260 *kJ/m ^{3}*

Stiffness to Weight: Axial

9.3 *points*

Stiffness to Weight: Bending

25 *points*

Strength to Weight: Axial

23 *points*

Strength to Weight: Bending

23 *points*

Thermal Shock Resistance

45 *points*

## Alloy Composition

Ti | 52.3 to 58 | |

Nb | 42 to 47 | |

O | 0 to 0.16 | |

C | 0 to 0.030 | |

Fe | 0 to 0.030 | |

N | 0 to 0.030 | |

H | 0 to 0.0035 | |

res. | 0 to 0.4 |

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

## Followup Questions

## Further Reading

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

ASTM B861: Standard Specification for Titanium and Titanium Alloy Seamless Pipe

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