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
|
