Gr9 Ti-3Al-2.5V Titanium Bar
Diameter:≥1.0mm
Length:≤6000mm(normal szie)
Technique: Cold Rolled, hot rolled
Grade:GR9
Material:titanium
Surface:bright
Certification:ISO，EN10204 3.1，EN10204 3.2
Standard:ASTM B348
Shape:Flat/Square/as customer request shape cutting
What is Gr9 Ti-3Al-2.5V Titanium Bar?
Gr9 Ti-3Al-2.5V Titanium Bar can be used at higher temperatures than Grades 1 through 4. Grade 9 titanium has good cold rolling properties.Ti-3Al-2.5V (Grade 9) is a near α-type titanium alloy. The strength of Titanium 9 is between Grade 4 and Grade 5. It has excellent corrosion resistance for aerospace and industrial applications.
Titanium Ti3Al2.5V (grade 9) or more simply known as Ti-3-2.5 is commonly grouped with the commercially pure grades due to it's ability to be cold rolled. The strength of Ti3al2.5V (Ti-3-2.5) falls between Grade 4 and Grade 5. However Ti3Al2.5V (grade 9) can be used at higher temperatures than Grade 1, Grade 2, Grade 3 and Grade 4.
Standards: ASTM B348, ASME SB348
Product Shapes: round bar, square bar, hex bar, rectangular bar
Gr9 Ti-3Al-2.5V Titanium Bar Application Fields:
• Aerospace
• Industrial production
• Missile development
• Chemical inspection
Applicable Specifications for Bars:
ASTM B348 – Standard Specification for Titanium and Titanium Alloy Bars and Billets
ASME SB348 – Same as ASTM B348 for pressure vessel applications
AMS 4967 – Bars, wire, forgings, and rings
MIL-T-9047 – Bars and forgings
Chemical Composition (ASTM B348 / Gr9)
| Element | Composition Requirement (%) | Typical Value (%) |
|---|---|---|
| Titanium (Ti) | Balance | Balance |
| Aluminum (Al) | 2.5 – 3.5 | 3.0 |
| Vanadium (V) | 2.0 – 3.0 | 2.5 |
| Iron (Fe) | ≤ 0.25 | 0.12 |
| Oxygen (O) | ≤ 0.15 | 0.10 |
| Carbon (C) | ≤ 0.08 | 0.02 |
| Nitrogen (N) | ≤ 0.03 | 0.01 |
| Hydrogen (H) | ≤ 0.015 | 0.002 |
| Residuals (each) | ≤ 0.10 | < 0.05 |
| Residuals (total) | ≤ 0.40 | < 0.20 |
Mechanical Properties (Annealed Condition)
| Property | ASTM B348 Requirement | Typical Value |
|---|---|---|
| Tensile Strength (Ultimate) | ≥ 620 MPa (≥ 90 ksi) | 650 – 750 MPa |
| Yield Strength (0.2% Offset) | ≥ 483 MPa (≥ 70 ksi) | 520 – 600 MPa |
| Elongation | ≥ 15% | 18 – 22% |
| Reduction of Area | ≥ 25% | 35 – 45% |
| Hardness (Rockwell C) | – | 24 – 28 HRC |
| Hardness (Brinell) | – | 240 – 280 HB |
| Modulus of Elasticity | – | 100 – 110 GPa |
| Shear Strength | – | 380 – 450 MPa |
| Fatigue Strength (10⁷ cycles) | – | 300 – 350 MPa |
Physical Properties
| Property | Value | Units |
|---|---|---|
| Density | 4.48 | g/cm³ |
| Melting Point | 1640 – 1690 | °C |
| Thermal Conductivity | 8.5 – 9.5 | W/m·K (at 20°C) |
| Electrical Resistivity | 1.4 – 1.6 | µΩ·m (at 20°C) |
| Specific Heat Capacity | 540 | J/kg·K |
| Coefficient of Thermal Expansion | 8.6 – 9.2 | µm/m·°C (20 – 200°C) |
| Magnetic Properties | Non-magnetic | – |
| Poisson's Ratio | 0.32 – 0.33 | – |
| Shear Modulus | 38 – 42 | GPa |
| Beta Transus Temperature | 935 – 945 | °C |
Gr9 vs Other Titanium Grades
| Property | Gr2 (CP-Ti) | Gr9 (Ti-3Al-2.5V) | Gr5 (Ti-6Al-4V) |
|---|---|---|---|
| Tensile Strength (MPa) | ≥ 345 | ≥ 620 | ≥ 895 |
| Yield Strength (MPa) | ≥ 275 | ≥ 483 | ≥ 828 |
| Elongation (%) | ≥ 20 | ≥ 15 | ≥ 10 |
| Formability | Excellent | Very Good | Good |
| Weldability | Excellent | Excellent | Good |
| Density (g/cm³) | 4.51 | 4.48 | 4.43 |
| Relative Cost | Low | Medium | Medium-High |
| Applications | General purpose | Formed/welded structures | High-strength applications |
Can Gr9 bars be used for hydraulic tubing applications?
Yes, Gr9 is the preferred material for aircraft hydraulic tubing systems. Bars are used to manufacture:
Hydraulic fittings and couplings
Tube end formings
Connector bodies
Manifold components
For tubing itself, we supply Gr9 in tube form per AMS 4943/AMS 4944.
Can Gr9 bars be heat treated for higher strength?
Yes, Gr9 can be solution treated and aged to achieve higher strength:
Solution Treat: 900-940°C, water quench
Age: 480-540°C for 4-8 hours, air cool
Resulting Strength: Tensile up to 750-800 MPa
However, this reduces formability and is less common than using Gr5 for high-strength applications.
About Our Factory
VAR (Vacuum Arc Remelting) Furnaces – for premium quality titanium ingots with precise alloy chemistry
Hydraulic Forging Presses – for breakdown of ingots into billets with optimized grain structure
Rotary Forging Machines – for improved mechanical properties and consistency
Hot Rolling Mills – with precise temperature control for uniform properties
Cold Drawing Lines – for tight dimensional control and improved surface finish
Annealing Furnaces – including vacuum annealing for critical applications
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