6Al-4V ELI

6Al-4V ELI

Low interstitial version of Ti-6Al-4V, for maximum toughness. Preferred for marine and cryogenic applications. This grade is normally used in the annealed condition. Ti-6Al-4V is the preferred choice for the medical implant field.

Stress relief 900-1200°F 1 to 4 hours, air cool. Duplex anneal, bar and forgings: Solution anneal 50-100°F below the beta transus, hold 1 hour minimum, air cool. Then reheat within the range 1300-1400°F, hold 1 hour minimum, air cool. Stress - relief annealing is performed after welding.

Chemistry

 AlVFeOCNHYOthers,
Each
Others,
Total
Ti
MIN 5.5 3.5 -- -- -- -- -- -- -- -- --
MAX 6.5 4.5 0.25 0.13 0.08 0.03 0.0125 0.005 0.1 0.4 Balance

Specifications

AMS 4907AMS 4930AMS 4931AMS 4956AMS 6932
ASME SB 348
ASTM B 348ASTM F 136
EN 3.7164
ISO 5832-3
MIL-T-9047
UNS R56401
Werkstoff 3.7164

Inventory

6Al-4V ELI Round Bar, 6Al-4V ELI Welding Products

Common Trade Names

6-4 ELI Titanium, 6-4 ELI

Features

  • Resistant to bodily fluids
  • Resistant to a variety of corrosive environments
  • Freedom from chloride stress corrosion cracking
  • Good strength and toughness over a wide temperature range
  • High resistance to erosion corrosion and corrosion fatigue
  • Useful resistance to dry chlorine, fluorine, hydrogen chloride and hydrogen fluoride gases

Applications

  • Medical and dental implants
  • Cryogenics
  • Aerospace
  • Chemical processing

Physical Properties

Density: 0.160 lb/in3
Melting Range: 2370 - 2460°F
Beta Transus: 91790+25°F

Minimum Tensile Properties, AMS 4919, Duplex Annealed

Temperature, °F 68-212 68-600 68-1000 68-1200 68-1500
Coefficient* of Thermal Expansion, in/in°F x 10-6 9.18 9.54 10.08 10.44 10.8

Mechanical Properties

Typical hardness Rockwell: C 30-34 Specific minimums, AMS 4931, bar and forging

Representative Tensile Properties, Sheet

Diameter, in < 3.0 < 3.0 < 4.0 < 4.0) < 6.0
Tensile Strength, ksi 125 123 120
0.2 % Yield Strength, ksi 115 110 110
Elongation, % *L (**ST) 10 (8) 10 (8) 8 (8)
Reduction of Area, % *L (**ST) 25 (–) 20 (15) 15 (15)

* Longitudinal ** Short Transverse

Typical Elevated temperature Properties

Temperature, °F 93 (200) 149 (300) 204 (400) 260 (500)
Ultimate Tensile Strength, ksi 843.3 (121) 772.2 (112) 723.9 (105) 657.7 (98)
0.2 % Yield Strength, ksi 710.2 (103) 641.2 (93) 586.1 (85) 531.0 (77)
Elongation, % 13 15 16 16