TI · titanium
Titanium Ti-10V-2Fe-3Al
A high-strength beta alloy for heavy-section forgings and machined parts. Deep hardenability means a thick section gets uniform properties - and uniform difficulty in cutting.
Quoting this material
- Typical lead time
- 20–30 working days
- Condition
- Solution treated and aged
- Achievable finish
- Ra 1.6 µm typical · Ra 0.8 µm best
Machined in-house to your drawing: see the precision CNC machining service and the machine and inspection capability it runs on.
Machinability
Our own 1–10 shop ranking, not a published index: 10 is free-cutting brass C360, 1 is Inconel 718. It ranks how a material behaves on the floor - cycle time, chip control and tool life together. Where a published index exists it is quoted in the note.
A high-strength beta alloy for heavy-section forgings and machined parts. Deep hardenability means a thick section gets uniform properties - and uniform difficulty in cutting.
Properties as supplied
| Parameter | Value | Unit |
|---|---|---|
| Tensile strength (aged) | 1,100–1,250 | MPa |
| Yield strength (aged) | 1,000–1,100 | MPa |
| Elongation (aged) | 6–8 | % |
| Hardness (aged) | ~36 | HRC |
| Section capability | Deep hardening | - |
| Modulus of elasticity | 110 | GPa |
Hardness, tensile and thermal figures are typical published values for the condition stated. Actual mill certificates govern; send the specification with the drawing and we confirm against the certificate before the material is cut.
Condition
Solution treated and aged
Heat treatment
Solution treat and age to develop the strength. It hardens deeply, which is the property that makes it usable in a thick forging where a surface-hardening alloy would give a soft core.
Achievable surface finish
Ra 1.6 µm
Ra 0.8 µm
Fatigue-critical surfaces are shot peened; the machining finish is a starting point, not the final condition.
Tooling and cutting parameters
Cutting speed
- 30–60 m/min (carbide)
Feed
- 0.06–0.16 mm/rev turning · 0.04–0.10 mm/tooth milling
Tooling
- Uncoated fine-grain carbide, very sharp, maximum rigidity
Coolant
- High-pressure through-tool
Starting points for carbide on a rigid setup, not a guarantee. The right numbers depend on the machine, the toolholder and the fixturing - ask and we will say what we would actually run.
Typical applications
- Aircraft landing gear components
- Heavy-section forged fittings
- High-strength structural components
- Actuator and hinge fittings
- Aerospace fasteners
DFM notes for this grade
- Typical use is a forging rather than bar stock, so the machining is often a roughing operation on a near-net shape followed by finishing after heat treatment
- Low ductility in the aged condition makes it notch sensitive: a sharp corner or a machining mark is a crack site in a part that is usually fracture critical
- The deep hardening that makes it useful in thick sections also makes the whole section hard to cut - there is no soft core to relieve the tool
Questions buyers ask
- When is Ti-10-2-3 chosen over Ti-6Al-4V?
- When the section is thick and the strength has to be uniform through it. Ti-6Al-4V is limited in how deep it can develop its properties in a heavy forging; a beta alloy hardens through, which is why landing-gear and heavy fitting work uses them.
- Is it available as bar stock?
- Seldom in the sizes a heavy component needs, and the price reflects it. Most Ti-10-2-3 work arrives as a forging, which changes the machining from “make the part from bar” to “bring this forging to drawing”.
Grades we would quote instead
Ti-6Al-4V
3/10The alloy the whole titanium reputation comes from.
Ti-15-3
3/10A metastable beta alloy: soft and stringy in the annealed state, and ageing takes it to high strength.
4340
5/10Tougher and harder than 4140 at the same strength, and it machines accordingly - expect lower speeds, shorter tool life and a real grinding allowance after heat treatment.