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 106 psi
Elongation at Break
27 %
Fatigue Strength
160 MPa 23 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
34 %
Shear Modulus
38 GPa 5.5 x 106 psi
Shear Strength
180 MPa 25 x 103 psi
Tensile Strength: Ultimate (UTS)
270 MPa 39 x 103 psi
Tensile Strength: Yield (Proof)
210 MPa 31 x 103 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/cm3 280 lb/ft3
Embodied Carbon
36 kg CO2/kg material
Embodied Energy
600 MJ/kg 260 x 103 BTU/lb
Embodied Water
230 L/kg 27 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
68 MJ/m3
Resilience: Unit (Modulus of Resilience)
220 kJ/m3
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 mm2/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