Ti-6Al-6V-2Sn
UNS R56620
Description
Ti-6Al-6V-2Sn (Ti 6-6-2) is an alpha-beta titanium alloy with heat treatable. Ti-6Al-6V-2Sn has many similar properties to Ti-6Al-4V alloy but offers higher strength and section hardenability because of its elevated alloy content of vanadium, iron, and copper. Thus, Ti-6Al-6V-2Sn is used as a higher strength alternative to Ti-6Al-4V. However, having high strength is at the sacrifice of weldability, ductility and toughness. In most cases, welding is not recommended to Ti 6-6-2 but it is readily machinable utilizing low cutting speeds, heavy feed rates, sharp tools, and ample cutting fluid, and its machinability is similar to austenitic steel. Usually, Ti-6Al-6V-2Sn alloy is used for forgings and extrusions requiring greater strength than Ti-6Al-4V. The typical use is in airframe component applications.
Chemical Component
| Ti | Fe | O | C | N | H | Al | V | Sn | Cu |
|---|---|---|---|---|---|---|---|---|---|
| 82.895-87.8% | 0.35-1.0% | 0.20% max | 0.050% max | 0.040% max | 0.015% max | 6.0% | 6.0% | 2.0% | 0.35-1.0% |
Basic Information
| Items | Ti-6Al-6V-2Sn |
|---|---|
| Catalog | ACAM-Ti-A015 |
| Density | 0.164 lbs/in3 (4.54 g/cm3) |
| Specific Heat Capacity | 0.160 BTU/lb-°F (0.670 J/g-°C) |
| Modulus of Elasticity | 16000 ksi (110.3 GPa) |
| Thermal Conductivity | 45.8 BTU-in/hr-ft2-°F (6.60 W/m-K) |
| Melting Range | 2961-3000 °F (1627-1649 °C) |
Material Forms
Alfa Chemistry offers Ti-6Al-6V-2Sn in a variety of forms, including Sheet, Strip, Plate, Bars, Rings, Forgings, Extrusions, and Wire.
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 351 | 351 |
| Hardness, Knoop | 382 | 382 |
| Hardness, Rockwell C | 38 | 38 |
| Hardness, Vickers | 367 | 367 |
| Tensile Strength, Ultimate | 1050 MPa | 152000 psi |
| Elongation at Break | 14% | 14% |
| Poissons Ratio | 0.32 | 0.32 |
Additional Properties
Forming: Ti-6Al-6V-2Sn can be hot or cold formed. Forming techniques include hydropress, stretch or drop-hammer.
Hot Working: Hot working enhances the overall ductility of the material.
Cold Working: Cold working features of this material is same as that of austenitic stainless steel. Post-work annealing is recommended to re-attain favorable performance properties.
Specifications
- AMS 4918
- AMS 4936
- AMS 4971
- AMS 4978
- AMS 4979
- AMS 6935
- AMS 6936
- DMS 1870
- DMS 1887
- MIL F-83142
- MIL T-81556
- MIL-T-9046
- MIL-T-9047
- UNS R56620
Applications
Ti-6Al-6V-2Sn can be used in a variety of applications, including:
- Airframes
- Jet engines
- Rocket engine cases
- Nuclear reactor components
- Ordnance components
* 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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