Aug 7 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
Annealing
Applications
Introduction
Titanium alloys are light weight metals with excellent corrosion resistance, very high tensile strength and high toughness. They are also durable. Grade Ti-16V-2.5Al alloy is a metastable beta alloy that is age-hardenable.
The following sections will discuss in detail about grade Ti-16V-2.5Al alloy.
Chemical Composition
The chemical composition of grade Ti-16V-2.5Al alloy is outlined in the following table.
|
Element |
Content (%) |
|
Titanium, Ti |
81.5 |
|
Vanadium, V |
16 |
|
Aluminum, Al |
2.5 |
Physical Properties
The physical properties of grade Ti-16V-2.5Al alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
4.65 g/cm3 |
0.168 lb/in3 |
Mechanical Properties
The following table shows mechanical properties of grade Ti-16V-2.5Al alloy (transverse).
|
Properties |
Metric |
Imperial |
|
Tensile strength |
1110 MPa |
161000 psi |
|
Yield strength |
1000 MPa |
145000 psi |
|
Shear Strength |
690 MPa |
100000 psi |
|
Elongation at break |
6.20% |
6.20% |
Thermal Properties
The thermal properties of grade Ti-16V-2.5Al alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient |
9 µm/m°C |
5 µin/in°F |
|
Thermal conductivity |
8.70 W/mK |
60.4 BTU in/hr.ft².°F |
Fabrication and Heat Treatment
Annealing
Grade Ti-16V-2.5Al alloy is duplex annealed at 760°C (1400°F) for 30 min, followed by air cooling. The process is repeated at + 525°C (977°F) for 4 to 6 h and then air cooled.
Applications
Grade Ti-16V-2.5Al alloy is used in the following application areas:
-
High-strength sheet for aerospace.