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Master Bond adhesives
TIMET TIMETAL® 550 (Ti-4Al-4Mo-2Sn) Titanium Alloy Solution Treated
Categories: Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy

Material Notes: High-Strength Forging Alloy

Industry Specifications: Germany Aerospace: 3.7184. France: T-A4DE. UK Aerospace Specifications BS TA. 45, 46, 47, 48,49, 50, 51, 57.

Features: TIMETAL 550, like TIMETAL 6-4, is readily forgeable and is generally used in a heat treated condition. It has superior room and elevated temperature tensile strength and fatigue strength compared to TIMETAL 6-4, and is creep resistant up to 400°C. It has applications in the aerospace industry, both as aeroengine and airframe components. Typical applications include compressor discs and flap tracks. The alloy has also found applications in high performance automotive engines. The alloy may be welded using controlled electron beam or laser welding techniques. Slow welding speeds and low cooling rates are necessary to achieve adequate weld properties. In sheet form, the alloy has good superplastic properties and excellent balance of strength and toughness.

Typical heat treatment for this alloy: Solution heat treatment: 900°C for 1 hr per 25 mm section, air cool. Aging treatment: 500°C for 24 hrs, air cool.

Data provided by TIMET.

Vendors:
Available Properties
  • Density, Typical
  • Tensile Strength, Ultimate, Typical
  • Tensile Strength, Yield, Typical
  • Elongation at Break, Typical
  • Reduction of Area
  • Modulus of Elasticity, Dynamic
  • Fatigue Strength, Limit; test specifics not reported
  • Fracture Toughness, K(IC); Typical Forging (heat treatment unspecified); Tangential
  • Fracture Toughness, K(IC); Typical Bar (heat treatment unspecified); Longitudinal
  • CTE, linear
  • CTE, linear
  • Specific Heat Capacity
  • Thermal Conductivity
  • Maximum Service Temperature, Air, Good tensile and creep to 400°C
  • Beta Transus
  • Aluminum, Al
  • Hydrogen, H
  • Iron, Fe
  • Molybdenum, Mo
  • O + 2N
  • Other, each
  • Other, total
  • Silicon, Si
  • Tin, Sn
  • Titanium, Ti, Calculated as remainder
  
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