Grade C-2 Cast Titanium
Grade C-2 titanium is a titanium alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has a moderately low embodied energy among the cast titaniums in the database.
The graph bars on the material properties cards below compare grade C-2 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
Brinell Hardness
180
Elastic (Young's, Tensile) Modulus
110 GPa 15 x 106 psi
Elongation at Break
17 %
Fatigue Strength
200 MPa 29 x 103 psi
Poisson's Ratio
0.32
Rockwell B Hardness
84
Shear Modulus
40 GPa 5.9 x 106 psi
Tensile Strength: Ultimate (UTS)
390 MPa 56 x 103 psi
Tensile Strength: Yield (Proof)
310 MPa 45 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
21 W/m-K 12 BTU/h-ft-°F
Thermal Expansion
8.7 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
3.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
7.1 % IACS
Otherwise Unclassified Properties
Base Metal Price
37 % relative
Density
4.5 g/cm3 280 lb/ft3
Embodied Carbon
31 kg CO2/kg material
Embodied Energy
510 MJ/kg 220 x 103 BTU/lb
Embodied Water
110 L/kg 13 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
61 MJ/m3
Resilience: Unit (Modulus of Resilience)
460 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
35 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
26 points
Thermal Diffusivity
8.8 mm2/s
Thermal Shock Resistance
30 points
Alloy Composition
| Ti | 98.8 to 100 | |
| O | 0 to 0.4 | |
| Fe | 0 to 0.2 | |
| C | 0 to 0.1 | |
| Ni | 0 to 0.050 | |
| 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 B367: Standard Specification for Titanium and Titanium Alloy Castings
Titanium and Titanium Alloys: Fundamentals and Applications, Christoph Leyens and Manfred Peters (editors), 2003
Titanium, 2nd ed., G. Lutjering and J. C. Williams, 2007