Ti-6Al-2Sn-4Zr-6Mo
UNS R56260
Description
Ti-6Al-2Sn-4Zr-6Mo, also known as Ti 6-2-4-6, is a "rich" alpha-beta titanium alloy. The alloy is a stronger derivative of Ti-6Al-2Sn-4Zr-2Mo alloy offering higher strength and elevated temperature properties up to 450 °C, which was designed primarily for high temperature applications requiring higher strength than alloy 6-2-4-2 at similar temperatures. However, the materials is more difficult to fabricate than the Ti-6Al-2Sn-4Zr-2Mo alloy. Ti 6-2-4-6 is heat treatable and deep hardenable but limited weldability. As with other titanium alloys, Ti 6-2-4-6 demonstrates excellent corrosion resistance due to the existence of the oxidation layer formed upon exposure to oxygen. In addition, it has a low cycle fatigue and a good ductility. The alloy commonly uses in aircraft applications and in the oil and gas industry.
Chemical Component
| Ti | Fe | O | C | N | H | Al | Sn | Zr | Mo |
|---|---|---|---|---|---|---|---|---|---|
| Balance | 0.15% max | 0.5% max | 0.04% max | 0.04% max | 0.0125% max | 5.5-6.5% | 1.75-2.25% | 3.5-4.5% | 5.5-6.5% |
Basic Information
| Items | Ti-6Al-2Sn-4Zr-6Mo |
|---|---|
| Catalog | ACAM-Ti-A014 |
| Density | 0.168 lbs/in3 (4.64 g/cm3) |
| Modulus | At 20 °C: 70-114 GPa |
| Beta Transus | 935 °C |
| Specific Gravity | 4.65 |
| Melting Range | 1595-1675 °C |
Material Forms
Alfa Chemistry offers Ti-6Al-2Sn-4Zr-6Mo in the forms of Flats and Round Bar.
Typical Mechanical Properties
| Condition | UTS, MPa | 0.2% PS, MPa | Elongation, % | Reduction in area, % | Hardness, HRC |
|---|---|---|---|---|---|
| Minima at RT for annealed bar | 1172 | 1103 | 10 (in 51mm GL) | 20L; 15T | 39> |
*L = Longitudinal; T = Traverse
Additional Properties
Corrosion Resistance: Corrosion resistance is good. The material is approve for sour service in the NACE MR-01-75 standard.
Weldability: The weldability of Ti 6-2-4-6 alloy is limited.
Forging: Work at 843-927 °C (1565-1725 °F) for bar and billet.
Specifications
Flats and Round Bar: AMS 4981, AMS 2631, MIL T-9047
Features
- Low modulus of Elasticity
- Low Density to Weight Ratio
- Resistance to Fatigue
- Heat Treatable to attain higher strengths
Applications
Ti-6Al-2Sn-4Zr-6Mo can be used in a variety of applications, including:
- Gas turbine engine components
- High performance racing engine components
- Oil and gas production equipment
- High performance automotive
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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