Ti CP Grade 4

UNS #R50700

Ti CP Grade 4 is the strongest grade of commercially pure titanium with good ductility, moderate formability, and has superior corrosion fatigue resistance in seawater. With the highest allowable oxygen and iron contents it combines the excellent resistance to corrosion and corrosion fatigue of titanium with high strength that makes it a candidate to compete with steels and nickel alloys for many applications. It has a minimum yield strength of 480 MPa (70 ksi) and applicable service temperatures up to 400ºF (204ºC). It has the highest allowable oxygen and iron content of the grades and can be considered in any application where strength and corrosion resistance are important.

Type Analysis

  • Carbon (Maximum) 0.08
  • Titanium (Nominal) Balance
  • Iron (Nominal) 0.5
  • Nitrogen (Maximum) 0.05
  • Hydrogen (Maximum) 0.015
  • Oxygen (Maximum) 0.4

Applicable Specifications

  • AMS 4902 (Sheet
  • Strip
  • Plate)
  • AMS 4942 (Seamless Tubing)
  • ASTM B265 (Sheet
  • Strip
  • Plate)
  • ASTM B367 (Castings)
  • AWS A5.16-70 (Weld Filler Metal Wire and Rod)
  • AMS 4941 (Welded Tubing)
  • AMS 4951 (Weld Filler Metal Wire)
  • ASTM B348 (Bar
  • Billet)
  • ASTM F67 (Unalloyed Ti for Surgical Implants)




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