Grade 19 (R58640) Titanium
Grade 19 titanium is a titanium alloy formulated for primary forming into wrought products. R58640 is the UNS number for this material. Additionally, the ASTM designation is Titanium Grade 19.
It has a moderately low thermal conductivity among wrought titaniums. In addition, it has a moderately low heat capacity and a moderately high density.
The properties of grade 19 titanium include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare grade 19 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
120 GPa 18 x 106 psi
Elongation at Break
5.6 to 17 %
Fatigue Strength
550 to 620 MPa 80 to 89 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
22 %
Shear Modulus
47 GPa 6.8 x 106 psi
Shear Strength
550 to 750 MPa 79 to 110 x 103 psi
Tensile Strength: Ultimate (UTS)
890 to 1300 MPa 130 to 190 x 103 psi
Tensile Strength: Yield (Proof)
870 to 1170 MPa 130 to 170 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
370 °C 700 °F
Melting Completion (Liquidus)
1660 °C 3020 °F
Melting Onset (Solidus)
1600 °C 2920 °F
Specific Heat Capacity
520 J/kg-K 0.12 BTU/lb-°F
Thermal Conductivity
6.2 W/m-K 3.6 BTU/h-ft-°F
Thermal Expansion
9.1 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
45 % relative
Density
5.0 g/cm3 310 lb/ft3
Embodied Carbon
47 kg CO2/kg material
Embodied Energy
760 MJ/kg 330 x 103 BTU/lb
Embodied Water
230 L/kg 27 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
70 to 150 MJ/m3
Resilience: Unit (Modulus of Resilience)
3040 to 5530 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
33 points
Strength to Weight: Axial
49 to 72 points
Strength to Weight: Bending
41 to 53 points
Thermal Diffusivity
2.4 mm2/s
Thermal Shock Resistance
57 to 83 points
Alloy Composition
| Ti | 71.1 to 77 | |
| V | 7.5 to 8.5 | |
| Cr | 5.5 to 6.5 | |
| Mo | 3.5 to 4.5 | |
| Zr | 3.5 to 4.5 | |
| Al | 3.0 to 4.0 | |
| Fe | 0 to 0.3 | |
| O | 0 to 0.12 | |
| C | 0 to 0.050 | |
| N | 0 to 0.030 | |
| H | 0 to 0.020 | |
| 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
Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015