Titanium Alloy 6246 (Ti-6Al-2Sn-4Zr-6Mo) │ UNS R56260: Superior Strength and Thermal Resistance
General Technical Characteristics
Titanium alloy 6246 (Ti-6Al-2Sn-4Zr-6Mo) is a high-strength α+β alloy designed for use in high-temperature and high-load environments. This material features an optimal combination of strength, toughness, and creep resistance at elevated temperatures. 6246 alloy demonstrates excellent property stability and high corrosion resistance.
Chemical Composition
The chemical composition of the alloy includes:
- Aluminum (Al): 5.5-6.5%
- Tin (Sn): 1.8-2.2%
- Zirconium (Zr): 3.6-4.4%
- Molybdenum (Mo): 5.5-6.5%
- Titanium (Ti): base
Impurities (max.):
- Oxygen: 0.15%
- Nitrogen: 0.04%
- Carbon: 0.04%
- Iron: 0.15%
Mechanical Properties
Key mechanical characteristics:
- Tensile Strength: 1170-1380 MPa
- Yield Strength: 1100-1275 MPa
- Elongation: 8-12%
- Modulus of Elasticity: 114-120 GPa
- Hardness: 35-45 HRC
- Impact Toughness: 20-30 J/cm²
Applications
6246 alloy is widely used in:
- Aerospace industry
- Gas turbine engines
- Compressor blades
- Compressor discs
- Fastening elements
- Structural components
- Space technology
- High-temperature applications
Material Features
Key advantages of 6246 alloy:
- High specific strength
- Excellent thermal stability
- Superior corrosion resistance
- Good machinability
- High creep resistance
- Property stability at elevated temperatures
- Good weldability
- High fatigue strength
The material retains its properties at temperatures up to 450°C, making it ideal for high-temperature components.
Heat Treatment
Recommended heat treatment conditions:
- Annealing: 700-750°C
- Quenching: 880-920°C
- Aging: 590-610°C
Technological Features
6246 alloy is characterized by:
- Good machinability
- Weldability in a protective atmosphere
- Capability for cold and hot deformation
- Dimensional stability during heat treatment
Conclusion
Titanium alloy 6246 (UNS R56260) is a modern structural material combining high strength, thermal resistance, and excellent corrosion resistance. These characteristics make it an optimal choice for critical aerospace and space industry components that operate under high temperatures and heavy loads.
Supply Forms of Titanium 6246 (6-2-4-6) │ UNS R56260
| Product Type | Dimensions |
|---|---|
| Titanium Sheet 6246 | Thickness: 0.5 mm – 100 mm |
| Titanium Bar 6246 | Diameter: 1.5 mm – 250 mm |
| Titanium Pipes 6246 | Diameter: 6 – 280 mm, Wall Thickness: 0.5 – 45 mm |
| Titanium Wire 6246 | Diameter: 0.1 mm – 6.0 mm |
| Titanium Strip 6246 | Thickness: 0.1 mm – 4 mm |
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