Alloy Introduction
Ti-5111 High-Strength Titanium Alloy Plate is a near-alpha titanium alloy developed jointly in the late 1980s by the American company Timet and the U.S. Navy. It features moderate strength, high toughness, and good weldability, with a nominal composition of Ti-5Al-1V-1Sn-1Zr-0.8Mo. The alloy's outstanding characteristics include excellent fracture toughness and stress corrosion resistance, while also possessing good room-temperature creep resistance. It is mainly used in shipbuilding and marine engineering, making it an ideal material for fasteners.
Chemical Composition
| Element |
Al |
V |
Sn |
Mo |
Zr |
C |
N |
H |
O |
Fe |
Si |
Ti |
| Content |
4.5-5.5 |
0.6-1.4 |
0.6-1.4 |
0.6-1.2 |
0.6-1.4 |
0.08 |
0.05 |
0.01 |
0.01 |
0.08 |
0.04 |
Remaining amount |
Varieties, Specifications, and Supply Status
The Ti-5111 high-strength titanium alloy has been processed into plates, bars, strips, forgings, and castings with thicknesses ranging from 6 to 51 mm.
Mechanical Properties
Ti-5111 High-Strength Titanium Alloy Plate are shown in Table 2.
| Direction |
Rm/MPa |
Rp0.2/MPa |
0.2%Compressive yield strength |
A/% |
Z/% |
|
25mm~50mm Annealed state(954℃/1h,air-cooled) |
|||||
|
L |
835 |
720 |
750 |
73.0 |
28.0 |
|
T |
865 |
775 |
811 |
74.0 |
29.0 |
|
9.5mm Annealed state(952℃/1h,air-cooled) |
|||||
|
L |
814 |
710 |
- |
15.5 |
29.0 |
|
T |
883 |
807 |
- |
15.0 |
35.0 |
|
1.3mm Annealed state(941℃/0.5h,air-cooled) |
|||||
|
L |
910 |
800 |
- |
10.0 |
- |
|
T |
965 |
889 |
- |
11.5 |
- |
Application Examples
The Ti-5111 high-strength titanium alloy is mainly used in shipbuilding and marine engineering. It is an ideal material for boat fasteners and can also be used as a structural alloy for deep-sea submersible vessels. In 2002, this alloy was first used in the communication mast of a new type of submarine.
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