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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 106 psi

Elongation at Break

11 %

Fatigue Strength

300 MPa 44 x 103 psi

Poisson's Ratio


Shear Modulus

39 GPa 5.7 x 106 psi

Shear Strength

320 MPa 46 x 103 psi

Tensile Strength: Ultimate (UTS)

530 MPa 77 x 103 psi

Tensile Strength: Yield (Proof)

520 MPa 75 x 103 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


6.3 g/cm3 390 lb/ft3

Embodied Carbon

58 kg CO2/kg material

Embodied Energy

920 MJ/kg 400 x 103 BTU/lb

Embodied Water

130 L/kg 15 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

59 MJ/m3

Resilience: Unit (Modulus of Resilience)

1260 kJ/m3

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

Titanium (Ti)Ti 52.3 to 58
Niobium (Nb)Nb 42 to 47
Oxygen (O)O 0 to 0.16
Carbon (C)C 0 to 0.030
Iron (Fe)Fe 0 to 0.030
Nitrogen (N)N 0 to 0.030
Hydrogen (H)H 0 to 0.0035
Residualsres. 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