Titanium Grade 5 Machinability

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As a family, titanium and its alloys Titanium Grade 2 and Titanium Grade 5 have built a persona as a nightmare to machine. This is just not the situation. Experienced operators have compared its qualities to those found in the 316 stainless steel. For Titanium Grade 5, recommended practice includes high coolant flow (to offset the material's low thermal conductivity), slow speeds and generally high feed rates. Tooling should be tungsten carbide designations C1-C4 or cobalt type high speed tools.


Applications
  • Aircraft turbines
  • Engine components
  • Aircraft structural components
  • Aerospace fasteners
  • High-performance automatic parts
  • Marine applications
  • Sports equipments


Chemical Composition %

GradeNCHFeOAlVResiduals***Residuals***Ti
Titanium Grade 50.05 max0.08 max0.015 max0.40 max0.20 max5.5 - 6.753.5 - 4.50.1 max0.4 maxBalance
*** Need not be reported.
*** A residual is an element present in a metal or an alloy in small quantities and is inherent to the manufacturing process but not added intentionally. In titanium these elements include aluminium, vanadium, tin, chromium, molybdenum, niobium, zirconium, hafnium, bismuth, ruthenium, palladium, yttrium, copper, silicon, cobalt, tantalum, nickel, boron, manganese, and tungsten.
Mechanical Properties

Tensile Strength (ksi)0.2% Yield Strength (ksi)Elongation% in 2 inches
13012010

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