Ti-10V-2Fe-3Al is a near beta alloy developed as a high strength forging alloy. This grade provides the best combination of strength and toughness of the commercially available titanium alloys. Its strength permits about a 27% weight savings when compared to Ti-6Al-4V. At the 180 ksi tensile strength level, the K1c value is 40 ksi-in ½ minimum. Solution treated and aged material possesses excellent resistance to stress corrosion cracking, typically K1scc being greater than 0.8 K1c. Solution treated material should not be subject to long term exposure in the 500-800°F range. This could result in high strength but low ductility.
High strength condition: Solution treat 60-100°F below the beta transus (typically 1460-1480°F), not less than 30 minutes, water quench. Age 900-975°F not less than 8 hours, air cool. For lower strength, overage in the 950-1150°F range. This alloy is deep hardenable, capable of high strengths in sections up to approximately 4" thick.
This grade is usually supplied as billet or bar, finish rolled or forged in the alpha-beta field. For the high strength condition, the forging is usually given a pre-form forge above the beta transus, followed by 15-25% reduction below the beta transus.
Chemistry
|
|
V
|
Al
|
Fe
|
C
|
N
|
O
|
H
|
Y
|
Others,
Each
|
Others,
Total
|
Ti
|
|
MIN
|
9.0
|
2.6
|
1.6
|
--
|
--
|
--
|
--
|
--
|
--
|
--
|
--
|
|
MAX
|
11.0
|
3.4
|
2.22
|
0.05
|
0.05
|
0.13
|
0.015
|
0.005
|
0.1
|
0.3
|
Balance
|
Specifications
AMS 4983, AMS 4984, AMS 4986, AMS 4987
UNS R56410
Inventory
10V-2Fe-3Al Plate, 10V-2Fe-3Al Round Bar, 10V-2Fe-3Al Sheet
Common Trade Names
10-2-3 Titanium
Features
• High strength and toughness
• Weight savings when compared to Ti-6Al-4V
• Excellent resistance to stress corrosion cracking
Applications
• Hand and die forgings
• Aircraft landing gear
• Golf club driver faces
Physical Properties
Density: 0.168 lb/inch³
Nominal Beta Transus: 1470°F
Poisson's ratio: 0.32
Thermal Expansion: 75-800°F, 5.4x10-6 in/in°F
Tensile Modulus: 15.9x106 psi
Modulus: 16.2x106 psi
* 70°F to indicated temperature.
Mechanical Properties
Minimum Mechanical Properties AMS 4984, solution treated and aged
|
Ultimate Tensile Strength, ksi
|
173
|
|
Ultimate Tensile Strength, ksi
|
160
|
|
0.2% Yield Strength, ksi
|
4
|
|
Reduction of Area, %
|
Report
|
|
fracture toughness, k1C
|
40 ksi
|
AMS 4987, single solution heat treat & overage
|
Ultimate Tensile Strength, ksi
|
140
|
|
0.2% Yield Strength, ksi
|
130
|
|
Elongation, %
|
8
|
|
Reduction of Area, %
|
20
|
|
fracture toughness, k1C
|
80 ksi
|
