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

 

Al

V

Fe

O

C

N

H

Y

Others,
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 4907, AMS 4930, AMS 4931, AMS 4956, AMS 6932
ASME SB 348
ASTM B 348, ASTM 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 Weld Wire
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

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