UNS R56406 Titanium
R56406 titanium is a titanium alloy formulated for casting. Cited properties are appropriate for the annealed condition. It has a fairly low electrical conductivity among cast titaniums. In addition, it has a fairly low thermal conductivity and a fairly high tensile strength.
The graph bars on the material properties cards below compare R56406 titanium to: cast 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
9.1 %
Fatigue Strength
480 MPa 69 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
16 %
Shear Modulus
40 GPa 5.8 x 106 psi
Tensile Strength: Ultimate (UTS)
980 MPa 140 x 103 psi
Tensile Strength: Yield (Proof)
850 MPa 120 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
340 °C 640 °F
Melting Completion (Liquidus)
1610 °C 2930 °F
Melting Onset (Solidus)
1560 °C 2840 °F
Specific Heat Capacity
560 J/kg-K 0.13 BTU/lb-°F
Thermal Conductivity
7.1 W/m-K 4.1 BTU/h-ft-°F
Thermal Expansion
9.6 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.0 % IACS
Otherwise Unclassified Properties
Base Metal Price
36 % relative
Density
4.5 g/cm3 280 lb/ft3
Embodied Carbon
38 kg CO2/kg material
Embodied Energy
610 MJ/kg 260 x 103 BTU/lb
Embodied Water
200 L/kg 24 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
85 MJ/m3
Resilience: Unit (Modulus of Resilience)
3420 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
35 points
Strength to Weight: Axial
61 points
Strength to Weight: Bending
49 points
Thermal Diffusivity
2.8 mm2/s
Thermal Shock Resistance
69 points
Alloy Composition
| Ti | 88.1 to 91 | |
| Al | 5.5 to 6.8 | |
| V | 3.5 to 4.5 | |
| Fe | 0 to 0.3 | |
| O | 0 to 0.2 | |
| C | 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 F1108: Standard Specification for Titanium-6Aluminum-4Vanadium Alloy Castings for Surgical Implants (UNS R56406)
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