Titanium 6Al-2Sn-4Zr-6Mo, also known as 6246 or 6-2-4-6, is an alpha-beta alloy that can be heat-treated to achieve higher strength in larger section sizes compared to Titanium 6Al-4V Grade 5. It exhibits excellent corrosion resistance, making it a popular choice for applications requiring high strength, lightweight materials, and good corrosion resistance. Like other titanium alloys, 6Al-2Sn-4Zr-6Mo's corrosion resistance is attributed to the formation of an oxidation layer upon exposure to oxygen. Additionally, its approximately 6% molybdenum content enhances its corrosion resistance in environments with high hydrogen sulfide (H2S) levels and in seawater, making it an ideal material for offshore and subsea oil & gas applications.
1.Specification of Ti 6246 (Ti-6Al-2Sn-4Zr-6Mo) Titanium Alloy Bar:
| Density | 4.62 g/cm³ |
|
Hardness (Rockwell C) |
38–44 HRC |
| Forms Available |
Bars,Sheets,Plates,Forgings,Rings,Billets |
| Key Features |
High strength-to-weight ratio,Excellent corrosion resistance,Superior performance at elevated temperatures (up to 500°C),High fatigue resistance |
| Applications |
Aerospace (turbine engines, airframes) Marine and offshore (subsea equipment) Automotive (high-performance components) Energy (power generation, nuclear industry) |
| Standards |
AMS 4975, AMS 4976, AMS 4977, AMS 4981 ASTM B348 ISO 5832-11 |
2. Chemical Composition of Ti 6246 (Ti-6Al-2Sn-4Zr-6Mo) Titanium Alloy Bar
| Chemical Composition (wt%) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy Element,Min~Max | Impurity Element, Max | Residual Elements | |||||||||
| Titanium | Aluminum(Al) | Tin(Sn) | Zirconium(Zr) | Molybdenum(Mo) | Oxygen(O) | Nitrogen | Iron(Fe) | Hydrogen(H) | Carbon(C) | each | total |
| Balance | 5.5 - 6.5% | 1.75 - 2.25% | 3.5 - 4.5% | 5.5 - 6.5% | 0.15% | 0.04% | 0.15% | 0.0125% | 0.04% | 0.1 | 0.4 |
3. Mechanical Properties (Approximate Values) of Ti 6246 (Ti-6Al-2Sn-4Zr-6Mo) Titanium Alloy Bar
|
Tensile Strength (Ultimate) |
Yield Strength | Elongation at Break | Modulus of Elasticity | Fatigue Strength |
|
1200–1350 MPa (174,000–196,000 psi) |
1100–1200 MPa (159,500–174,000 psi) |
8–12% |
110 GPa (16,000 ksi) |
600 MPa (at 10^7 cycles) |
4. Ti6246(6Al-2Sn-4Zr-6Mo) Application:
1) Aerospace Industry:
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Gas Turbine Engines:Ti-6246 is frequently used in components such as compressor discs, blades, and rotors, which are subjected to high temperatures and stress.
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Airframe Components:This alloy is utilized in structural elements requiring high strength-to-weight ratios and durability, particularly in high-temperature zones.
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Jet Engine Components:The alloy's high-temperature performance makes it suitable for critical engine parts where weight savings and temperature resistance are paramount.
2) Marine and Offshore Applications:
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Subsea Equipment:Ti-6246's excellent corrosion resistance allows it to be used in offshore oil and gas applications, including subsea drilling tools, risers, and components exposed to harsh marine environments.
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Propulsion Systems:The alloy's high strength and fatigue resistance make it ideal for high-performance marine propulsion systems and other critical components.
3) Automotive and Motorsport:
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Racing Car Components:Ti-6246's lightweight, high-strength characteristics are perfect for high-performance parts in motorsport, such as engine components, suspension systems, and transmission parts.
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Exhaust Systems:The alloy's high temperature resistance is valuable in designing lightweight exhaust systems for performance vehicles.
4) Energy Sector:
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Power Generation Equipment:Ti-6246 is used in components for gas and steam turbines, as well as power plants, due to its high strength and excellent fatigue performance under cyclic loading.
-
Nuclear Industry:It is also employed in nuclear power plants where both high strength and corrosion resistance are crucial in extreme environments.
5) Medical Devices (in certain instances):
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Although less common, Ti-6246 is sometimes used in biomedical implants and surgical instruments when high strength is required, though other titanium alloys like Ti-6Al-4V are more typically used for general medical applications.
6) Chemical Processing:
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Heat Exchangers:Ti-6246 is used in chemical processing equipment like heat exchangers, where resistance to aggressive environments is essential.
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Pressure Vessels and Tanks:The alloy is utilized in environments requiring both high mechanical strength and corrosion resistance.
5.Why Ti-6246 Is Used?
- High Strength-to-Weight Ratio:Vital for aerospace and automotive applications, reducing weight while maintaining strength.
- Corrosion Resistance:Ideal for marine, offshore, and chemical environments, extending the lifespan of equipment.
- Elevated Temperature Performance:Maintains mechanical properties in high-temperature environments up to 500°C.
- Fatigue Resistance:Excellent for cyclic loading, especially in turbine engines and subsea equipment.
6.Company Profile
Toptitanium operates as a manufacturer with a fully integrated Titanium industry chain.
Manufacturer of titanium bars with 15 years of experience.Employing Austrian radial forges GFM SX16, SX25, and SX45.
Supplier of forged titanium and titanium alloy materials.Utilizing fast forging machines with capacities of 2000T, 4500T, 6300T, 7000T and 5M ring rolling machine.
Provider of solutions for CNC machined components.Extensive array of CNC machinery, such as Horizontal/Vertical Machining Centers, CNC Lathes, CNC Milling Machines, and High Precision Surface Grinding Machines.
7.FAQ
Titanium alloy Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) is extensively employed across industries that necessitate high strength, fatigue resistance, and the ability to operate effectively at elevated temperatures. Its exceptional mechanical properties and corrosion resistance make Ti-6246 a preferred choice for various high-performance and demanding applications.Titanium alloy 6246 (Ti-6Al-2Sn-4Zr-6Mo) is commonly used where high strength and resistance to extreme temperatures and environments are crucial.
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