Grade 32 (R55111) Titanium
Grade 32 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. R55111 is the UNS number for this material. Additionally, the ASTM designation is Titanium Grade 32.
It has a moderately low melting temperature among the wrought titaniums in the database.
The graph bars on the material properties cards below compare grade 32 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
390 MPa 57 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
28 %
Shear Modulus
40 GPa 5.8 x 106 psi
Shear Strength
460 MPa 67 x 103 psi
Tensile Strength: Ultimate (UTS)
770 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
670 MPa 97 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
310 °C 600 °F
Melting Completion (Liquidus)
1610 °C 2920 °F
Melting Onset (Solidus)
1560 °C 2830 °F
Specific Heat Capacity
550 J/kg-K 0.13 BTU/lb-°F
Thermal Conductivity
7.5 W/m-K 4.3 BTU/h-ft-°F
Thermal Expansion
8.2 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.1 % IACS
Otherwise Unclassified Properties
Base Metal Price
38 % relative
Density
4.5 g/cm3 280 lb/ft3
Embodied Carbon
32 kg CO2/kg material
Embodied Energy
530 MJ/kg 230 x 103 BTU/lb
Embodied Water
180 L/kg 22 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
83 MJ/m3
Resilience: Unit (Modulus of Resilience)
2100 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
35 points
Strength to Weight: Axial
47 points
Strength to Weight: Bending
41 points
Thermal Diffusivity
3.0 mm2/s
Thermal Shock Resistance
63 points
Alloy Composition
| Ti | 88.1 to 93 | |
| Al | 4.5 to 5.5 | |
| Zr | 0.6 to 1.4 | |
| Sn | 0.6 to 1.4 | |
| V | 0.6 to 1.4 | |
| Mo | 0.6 to 1.2 | |
| Fe | 0 to 0.25 | |
| Si | 0.060 to 0.14 | |
| O | 0 to 0.11 | |
| 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
Titanium Alloys: Modelling of Microstructure, Properties, and Applications, Wei Sha and Savko Malinov, 2009
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
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015