1. Introduce
– Ti 6Al-2Sn-2Zr-2Mo-2Cr alloy, α-β alloy
– Promising alternative to Ti-64 for next-generation commercial aircraft and aeroengine applications
– Higher strength, better high temperature creep resistance than Ti-64
– UNS R56222
* Ti-64 vs Ti-62222
[(Annealed) Tensile Property]
| Tensile Property (Annealed) | Ti-62222 | Ti-64 |
|---|---|---|
| Ultimate Strength, ksi | 155 | 134 |
| 0.2% Yield Strength, ksi | 150 | 126 |
| Elongation, % | 8 | 10 |
[(Heat Treated) Tensile Property]
| Tensile Property (Heat Treated) | Ti-62222 | Ti-64 |
|---|---|---|
| Ultimate Strength, ksi | 180 | 160 |
| 0.2% Yield Strength, ksi | 160 | 145 |
| Elongation, % | 5 | 5 |
* α-β Alloy Features
: Medium strength material with a typical tensile strength of 620 to 1250 MPa and creep resistance over a temperature range of 350 to 400°C
* UNS
- Abbreviation for Unified Numbering Systems for Metals and Alloys
- Unified unique numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.
* R : Reactive and Refractory Metals and Alloys
* UNS R56222 : 5XXXX : Titanium
2. Property
– High temperature strength, corrosion resistance, ductility, toughness, plasticity, fatigue crack resistance
| Element | Impact |
|---|---|
| Al | Grain refinement element, provides high temperature oxidation resistance |
| Sn | Highly strengthened element, provides strength and hardness |
| Zr | Provides corrosion resistance |
| Mo | Provides corrosion resistance, pitting and crevice corrosion resistance, high temperature strength, creep-rupture strength, and toughness |
| Cr | Provides corrosion resistance, wear resistance, and oxidation resistance |
[Ti 62222 Chemical Composition (%)]
| Ti | N | C | H | O |
|---|---|---|---|---|
| 84.17 ~ 87.60 | Max. 0.03 | Max. 0.05 | Max. 0.01 | Max. 0.14 |
| Al | Mo | Cr | Zr | Sn |
|---|---|---|---|---|
| 5.50 ~ 6.50 | 1.80 ~ 2.20 | 1.80 ~ 2.20 | 1.80 ~ 2.20 | 1.50 ~ 2.50 |
[Ti 62222 Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|
| 910 | 830 | 12 |
[Ti 62222 Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Beta transus temperature (℃) |
|---|---|---|
| 4.65 | 1609 | 980 |
3. Standard & Specifiction
– Specification : UNS R56222
4. Available Form
– Bar, Rod
– Plate, Sheet, Strip
– Coil, Wire
– Powder
5. Application & Product
– Aerospace, Marine, Medical
| Application | Product |
|---|---|
| Aerospace | Aircraft parts |
| Marine | Boat hulls, Offshore platforms, Seawater valves, Offshore structures |
| Medical | Orthopedic and dental implants |
(1) Aircraft parts / (2) Boat hulls / (3) Seawater valves / (4) Implants
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