UNS R58150 Titanium (Ti-15Mo)
R58150 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. R58150 is the UNS number for this material. Ti-15Mo is the common industry name.
It has a fairly high density among wrought titaniums. In addition, it has a fairly high melting temperature and a fairly low heat capacity.
The graph bars on the material properties cards below compare R58150 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
140 GPa 20 x 106 psi
Elongation at Break
13 %
Fatigue Strength
330 MPa 49 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
68 %
Shear Modulus
52 GPa 7.5 x 106 psi
Shear Strength
470 MPa 68 x 103 psi
Tensile Strength: Ultimate (UTS)
770 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
550 MPa 80 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
320 °C 600 °F
Melting Completion (Liquidus)
1760 °C 3190 °F
Melting Onset (Solidus)
1700 °C 3090 °F
Specific Heat Capacity
500 J/kg-K 0.12 BTU/lb-°F
Thermal Expansion
8.4 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
48 % relative
Density
5.4 g/cm3 340 lb/ft3
Embodied Carbon
31 kg CO2/kg material
Embodied Energy
480 MJ/kg 210 x 103 BTU/lb
Embodied Water
150 L/kg 17 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
94 MJ/m3
Resilience: Unit (Modulus of Resilience)
1110 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
32 points
Strength to Weight: Axial
40 points
Strength to Weight: Bending
35 points
Thermal Shock Resistance
48 points
Alloy Composition
| Ti | 83.5 to 86 | |
| Mo | 14 to 16 | |
| O | 0 to 0.2 | |
| C | 0 to 0.1 | |
| Fe | 0 to 0.1 | |
| N | 0 to 0.050 | |
| H | 0 to 0.015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM F2066: Standard Specification for Wrought Titanium-15 Molybdenum Alloy for Surgical Implant Applications (UNS R58150)
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
Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010