Ti-6Al-2Sn-4Zr-2Mo
# Ti-6Al-2Sn-4Zr-2Mo

Ti-6Al-2Sn-4Zr-2Mo (UNS designation R54620), also known as Ti 6-2-4-2, is a near alpha titanium alloy known for its high strength and excellent corrosion resistance. It is often used in the aerospace industry for creating high-temperature jet engines and the automotive industry to create high performance automotive valves.

## Chemistry

| | Al | Sn | Zr | Mo | Fe | O | Si | C | N | H | Y | Remainder, each | Remainder, total |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Min. | 5.5 | 1.8 | 3.6 | 1.8 | — | — | 0.06 | — | — | — | — | — | — |
| Max. | 6.5 | 2.2 | 4.4 | 2.2 | 0.25 | 0.12 | 0.10 | 0.05 | 0.05 | 0.015 | 0.005 | 0.1 | 0.3 |

## Markets

* Aerospace
* Automobile

## Applications

* High-temp jet engines
* Gas turbine compressor components (Blades, Discs, Spacers and Seals)
* High performance automotive valves
* Sheet metal parts in afterburners and hot airframe sections
* Aircraft brake parts (e.g. Boeing 787)

## Specifications

* AMS: 4919, 4975, 4976, 4979, T 9047
* MIL-T : 9046, 9047
* MIL-F: 81556, 82142
* Werkstoff: 3.7145
* EN: 3.71450
* GE: B50TF22, B50TF21, C50TF7, B50TF22
* PWA: 1220
* DIN: 3.7164
* UNS: R54620
