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TIMETAL® 685 (Ti-6Al-5Zr-0.5Mo-0.25Si) Titanium Alloy

 

Subcategory: Titanium Alloy; Nonferrous Metal; Alpha/Near Alpha Titanium Alloy

Material Notes:
Titanium content above is calculated as the remainder and may not reflect the actual range.

High-Temperature, High-Strength Creep Resistant Alloy

Industry Specifications: Germany Aerospace: 3.7154. France: T-A6ZD. UK Aerospace Specifications BS TA. 43, 44.

Features: TIMETAL 685 possesses excellent tensile strength and creep resistance up to 520°C. It is weldable and has good forging characteristics. The alloy may be joined by the processes normally used in the fabrication of titanium, including argon-arc, electron beam and friction welding. Material should be fully heat treated prior to welding, and also given a suitable post-weld treatment. The weld zone of material treated in this way will have similar structure and properties to the parent metal. This alloy was specifically designed for the aero-engine industry. It is nonmagnetic.

Typical heat treatment for this alloy: Solution heat treatment: 1050°C for 30 mins, oil quench. Aging heat treatment: 550°C for 24 hours, air cool.

Data provided by TIMET.

Available Properties
  • Density
  • Tensile Strength, Ultimate
  • Tensile Strength, Yield
  • Elongation at Break
  • Reduction of Area
  • Modulus of Elasticity
  • Notched Tensile Strength
  • Poissons Ratio
  • Charpy Impact
  • Fatigue Strength
  • Fracture Toughness
  • Shear Modulus
  • Electrical Resistivity
  • CTE, linear 20°C
  • CTE, linear 250°C
  • CTE, linear 500°C
  • Thermal Conductivity
  • Maximum Service Temperature, Air
  • Beta Transus
   
Property Data

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