Ti-6Al-4V

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Ti-6Al-4V (UNS designation R56400), also sometimes called TC4,[1] is an alpha-beta titanium alloy with a high strength-to-weight ratio and excellent corrosion resistance. It is one of the most commonly used titanium alloys and is applied in a wide range of applications where low density and excellent corrosion resistance are necessary such as e.g. aerospace industry and biomechanical applications (implants and prostheses).

Studies of titanium alloys used in armors began in the 1950s at the Watertown Arsenal Laboratory, which later became a part of the Army Research Laboratory.[2][3]

Chemistry[edit]

(in wt. %)[4]

V Al Fe O C N H Y Ti Remainder Each Remainder Total
Min 3.5 5.5 -- -- -- -- -- -- -- -- --
Max 4.5 6.75 .3 .2 .08 .05 .015 .005 Balance .1 .3

Physical and Mechanical Properties[edit]

While mechanical properties are a function of the heat treatment condition of the alloy and can vary based upon properties, typical property ranges for well-processed Ti-6Al-4V are shown below.[5][6][7]

Density, g/cm3 Young's Modulus, GPa Shear Modulus, GPa Bulk Modulus,GPa Poisson's Ratio Yield Strength, MPa (Tensile) Ultimate Strength, MPa (Tensile) Hardness, Rockwell C Uniform Elongation, %
Min 4.429 104 40 96.8 0.31 880 900 36 (Typical) 5
Max 4.512 113 45 153 0.37 920 950 -- 18

Applications[edit]

  • Implants and prostheses (wrought, cast or by Solid Freeform Fabrication (SFF))[8]
  • Additive Manufacturing[9]
  • Parts and prototypes for racing and aerospace industry. Used extensively within the Boeing 787 aircraft.
  • Marine applications
  • Chemical industry
  • Gas turbines

Specifications[edit]

  • AMS: 4911
  • UNS: R56400

References[edit]

  1. ^ Paul K. Chu; XinPei Lu (15 July 2013). Low Temperature Plasma Technology: Methods and Applications. CRC Press. p. 455. ISBN 978-1-4665-0991-7. 
  2. ^ "Founding of ARL". www.arl. army.mil. Army Research Laboratory. Retrieved 6 June 2018. 
  3. ^ Gooch, William A. "The Design and Application of Titanium Alloys to U.S. Army Platforms -2010" (PDF). U.S. Army Research Laboratory,. Retrieved 6 June 2018. 
  4. ^ "ASTM Compass, Standard Specification for Wrought Ti-6Al-4V Alloy for Surgical Implant Applications. (UNS R56400)" (PDF). ASTM Compass. [permanent dead link]
  5. ^ "Titanium Ti-6Al-4V (Grade 5), Annealed". asm.matweb.com. ASM Aerospace Specification Metals, Inc. Retrieved 14 March 2017. 
  6. ^ "Titanium Alloy Ti 6Al-4V Technical Data Sheet". cartech.com. Carpenter Technology Corporation. Retrieved 14 March 2017. 
  7. ^ "AZoM Become a Member Search... Search Menu Properties This article has property data, click to view Titanium Alloys - Ti6Al4V Grade 5". www.azom.com. AZO Materials. Retrieved 14 March 2017. 
  8. ^ "Ti6Al4V Titanium Alloy" (PDF). Arcam. 
  9. ^ "Ti64 Titanium Alloy Powder". Tekna.