What Is Titanium Grade 9 Strip (Ti‑3Al‑2.5V)?
Ti Grade 9 is a near alpha, alpha-beta alloy, sometimes referred to as “half-6-4.” It offers 20 to 50% higher tensile strength than the commercially pure titanium at room and elevated temperatures. It is much more amenable to cold working than Ti 6AI/4V alloy and can be cold worked 75 to 85% to result in
moderately high strength and good ductility
The alloy can be formed from the annealed temper. Severe forming may be aided by an intermediate stress relief. Stress relieving may be appropriate after severe cold forming to remove residual stresses. Weldability and corrosion resistance is very similar to commercially pure titanium. Welding should be performed with inert gas shielded arc or spot welding.Welding with active gases, coatings, or fluxes must be avoided to prevent embrittlement.
What Product Forms Are Available for Titanium Grade 9 Strip?
What Are the Typical Manufacturing Specifications for Titanium Grade 9 Strip?
- ASTM B265
- AMS 4989
- Also individual customer specifications.
What Applications and Industries Benefit Most from Titanium Grade 9?
What Mechanical Properties Define Titanium Grade 9?
| Titanium Grade 9 MECHANICAL PROPERTIES |
| Temper |
Annealed |
| Tensile strength Rm |
|
| Yield strength Rp 0.2 |
|
| Elongation A50 |
|
What Physical Properties Characterize Titanium Grade 9?
| Titanium Grade 9 PHYSICAL PROPERTIES (At 20°C) |
| Specific Heat (0-100°C) |
427 |
J/(kg*K) |
| Thermal Conductivity |
7.6 |
W/(m*K) |
| Coef. of Thermal Expansion |
7.9 |
mm/m/°C |
| Modulus of Elasticity |
107
|
GPa
|
| Electrical Resistivity |
12.6
|
µohm/cm |
| Density |
4.48
|
g/cm3 |
Which Sizes Options Can Titanium Grade 9 Be Manufactured In?
| AVAILABLE DIMENSIONS (Millimeters) |
| Thickness (mm) |
100mm Wide
|
200mm Wide
|
300mm Wide |
| 0.0015 to 0.012 |
±5% |
- |
-
|
| 0.012 to 0.025 |
±5%
|
±0.0010 |
±0.0013 |
| 0.025 to 0.10 |
±0.0013 |
±0.0015 |
±0.0019
|
| 0.10 to 0.25 |
±0.0025
|
±0.0025 |
±0.0030 |
| 0.25 to 0.50 |
±0.0038
|
±0.0051 |
±0.0064 |
| 0.50 to 1.0 |
±0.0051
|
±0.0089 |
±0.0127 |
Tolerances in percent or mm. Tolerances may vary depending on alloy being rolled..
The table above outline typical thickness tolerances available from HPM, which are tighter than
industry standards.
What Is the Chemical Composition of Titanium Grade 9?
| CHEMICAL COMPOSION (% by weight) |
| Element |
Min |
Max |
| Ti |
Balance |
| Al |
2.5 |
3.5 |
| V |
2.0
|
3.0
|
| C |
-
|
0.08 |
| O |
-
|
0.15 |
| N |
-
|
0.03 |
| H |
-
|
0.015 |
| H |
-
|
0.015 |
| Fe |
-
|
0.25 |
| Others each |
0.1 |
| Others total |
0.4 |