Bar and Rod
Plate and Sheet
Strip
Pipe and Tube
Wire
Welding
Powder Material
Cast Products
Forged Products
Fittings
Fastening
Round Bar:
φ2–500 mm, 1–6 m length
Flat/Square Bar:
4–100 mm thickness/width
Hex Bar:
A/F 3–100 mm
Hollow Bar:
OD 20–300 mm
Sheet:
0.3–6 mm thickness
Medium Plate:
6–25 mm thickness
Heavy Plate:
25–100 mm thickness
Standard Strip:
0.05–3 mm thick,
10–600 mm wide
Precision strip:
0.01–0.5 mm thick,
tight tolerance ±0.005 mm
Foil:
0.005–0.1 mm thick
Seamless Tube:
OD 6–450 mm,
WT 1–50 mm,
1–12 m length
Welded Tube:
OD 10–600 mm,
WT 1–20 mm
Capillary Tube:
OD 1–10 mm,
WT 0.1–2 mm
Wire Form:
Cold Drawn Wire,
Bright Wire,
Spring Wire,
Fine Wire,
Ultra-fine Wire
General Diameter:
φ0.1–10 mm
Coil Weight:
50–500 kg,
customizable tolerance
Solid Wire:
φ0.8–4.0 mm
Flux-cored Wire:
φ1.2–4.0 mm
Welding Rod:
φ2.0–5.0 mm
Powder Form:
AM 3D Printing Powder,
Spherical Powder,
Gas-atomized Powder,
Water-atomized Powder
Particle Size:
10–150 μm
Sphericity:
≥90% for AM grade
Cast Ingot:
φ200–800 mm
Precision Casting:
min wall 0.5 mm
Cast Pipe:
OD 100–600 mm,
WT 10–50 mm
Forged Bar:
Φ35–500 mm
Forged Ring:
OD 200–2000 mm
Forging Weight:
1–5000 kg
Fittings Form:
Elbow, Tee, Reducer, Flange, Cap, Outlet, Lap Joint
Size range:
1/2''–24'' (DN15–DN600)
Wall thickness:
Sch10–Sch160, STD, XS, XXS
Pressure Class:
150–2500 LB
Fastening Form:
Bolt, Nut, Screw, Stud, Washer, Pin, Rivet
Metric: M3–M64
Imperial: #4–2.5''
Length: 6–500 mm
TiAl3V2.5A is the designation for a medium-strength titanium alloy containing about 3% aluminium and 2.5% vanadium (Ti-3Al-2.5V). This datasheet presents the material within the EN symbol designation system.
Often called the "half-alloy", TiAl3V2.5A is intermediate in strength between the commercially pure grades and Ti-6Al-4V, with strength 30–50% higher than unalloyed titanium. It was developed specifically for tubing and foil because it combines this raised strength with excellent cold formability — the cold-forming characteristics that Ti-6Al-4V lacks — and it can be further strengthened by cold work. The aluminium stabilises and strengthens the alpha phase while the vanadium stabilises the beta phase, improving formability, toughness and weldability. It offers an excellent strength-to-weight ratio and the good corrosion resistance characteristic of titanium, and is readily welded by inert-gas processes.
Typical applications include aircraft hydraulic and fuel tubing, foil, honeycomb, sporting goods (bicycle frames, golf shafts), and pressure-tubing for aerospace and industrial use.
| Property | Value | Unit |
|---|---|---|
| Density | 4.48 | g/cm³ |
| Melting range | 1600–1650 | °C |
| Elastic modulus | 100 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 9.5 | µm/m·°C |
| Thermal conductivity (20 °C) | 7.6 | W/m·K |
| Specific heat (20 °C) | 544 | J/kg·K |
| Structure | Near-alpha (alpha-beta) | — |
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Titanium | Ti | Balance | — | Base element |
| Aluminium | Al | 2.50 | 3.50 | Alpha stabiliser; strength |
| Vanadium | V | 2.00 | 3.00 | Beta stabiliser; formability, toughness |
| Iron | Fe | — | 0.25 | Residual |
| Oxygen | O | — | 0.15 | Interstitial; strength |
| Carbon | C | — | 0.08 | Interstitial impurity |
| Nitrogen | N | — | 0.03 | Interstitial impurity |
| Hydrogen | H | — | 0.015 | Interstitial impurity |
Annealed condition, per DIN 17850 / EN reference data for W.Nr. 3.7195.
| Condition | Property | Value |
|---|---|---|
| Annealed | Tensile strength (Rm) | ≥620 MPa |
| Annealed | 0.2% proof strength (Rp0.2) | ≥500 MPa |
| Annealed | Elongation at break | ≥15 % |
| Cold-worked stress-relieved | Tensile strength (Rm) | up to ~860 MPa |
| — | Elastic modulus | 100 GPa |
Values per DIN 17850; strengthened by cold work. Confirm against the inspection certificate (EN 10204).
| Environment | Performance | Notes |
|---|---|---|
| Atmospheric / general | Excellent | Titanium oxide film |
| Seawater / marine | Excellent | Resists chloride attack |
| Oxidizing acids | Excellent | Stable passive film |
| Chloride stress-corrosion cracking | Very Good | Generally resistant |
| Elevated temperature | Good | Useful to moderate temperatures |
Corrosion resistance is characteristic of titanium — excellent in seawater, chlorides and oxidizing media — combined with a high strength-to-weight ratio.
A medium-strength titanium alloy; primarily strengthened by cold work rather than heat treatment. Properties are set by annealing and cold work.
Anneal Anneal at approximately 650–760 °C and air cool. Cold-worked, stress-relieved tubing is given a lower-temperature stress relief (~370–480 °C). Protect from oxygen, nitrogen and hydrogen pickup at temperature.
Readily welded by inert-gas processes; the weld pool and cooling weld must be fully shielded from atmospheric contamination, which causes embrittlement. Matching filler is used.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Excellent | Matching Ti-3Al-2.5V filler |
| GMAW / MIG | Good | Matching filler |
| Automatic tube welding | Excellent | With built-in gas-purge chambers |
Use full inert-gas shielding and clean, contamination-free surfaces; avoid hydrogen, oxygen and nitrogen pickup.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | Moderate; settings similar to stainless steel |
| Work hardening | Strengthens by cold work |
| Coolant | Generous non-chlorinated coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Excellent — developed for tube and foil forming |
| Hot forming | Performed hot; anneal afterward; protect from contamination |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Aerospace | Hydraulic and fuel tubing, foil, honeycomb | Strength-to-weight + cold formability |
| Sporting goods | Bicycle frames, golf shafts | Strength-to-weight + formability |
| Industrial | Pressure tubing, structural tube | Strength + corrosion resistance |
| Marine | Tubing and components | Corrosion resistance |
| Product Form | DIN / EN Standard | Notes |
|---|---|---|
| Seamless / welded tube | DIN 17869 · W.Nr. 3.7195 | TiAl3V2.5A |
| Sheet, strip and plate | DIN 17860 · W.Nr. 3.7195 | — |
| Bar, rod and wire | DIN 17850 · W.Nr. 3.7195 | — |
| Inspection documents | EN 10204 | — |
Ti-3Al-2.5V medium-strength titanium alloy. W.Nr. 3.7195 (TiAl3V2.5A).
| EN Symbol | Al % | V % | Type | Best Used For |
|---|---|---|---|---|
| TiAl3V2.5A | 2.5–3.5 | 2–3 | Near-alpha | Ti-3Al-2.5V; tubing, cold formable, medium strength |
| TiAl6V4 | 5.5–6.75 | 3.5–4.5 | Alpha-beta | Ti-6Al-4V; most-used high-strength alloy (Grade 5) |
| Ti99.5 | — | — | CP (unalloyed) | Workhorse commercially pure titanium (Grade 2) |
| TiNi0.7Mo0.3 | — | — | CP-type alloy | Ti-0.3Mo-0.8Ni; enhanced corrosion (Grade 12) |
| TiPd0.2A | — | — | CP + Pd | Ti-0.15Pd; best corrosion resistance (Grade 7) |
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