Titanium Alloy Grade 9 Explained
Titanium Grade 9 (Ti-3Al-2.5V) is a medium-strength titanium alloy renowned for its excellent corrosion resistance, superior weldability, and exceptional cold-forming capability. Offering higher strength than commercially pure grades and greater formability than Grade 5, Grade 9 is widely used in aerospace hydraulic tubing, sports equipment, marine hardware, heat exchangers, and high-pressure industrial systems. Its outstanding performance in aggressive environments—combined with its lightweight structure and high fatigue resistance—makes it ideal for applications requiring both structural efficiency and fabrication flexibility. With a well-balanced combination of strength, corrosion resistance, and workability, Titanium Grade 9 is the preferred alloy for tubular products and precision-engineered components operating in demanding environments.
TITANIUM GR 9 SHEETS AND PLATES EQUIVALENT GRADES
| Common Name | UNS | Werkstoff Nr. |
|---|---|---|
| Titanium GR9 | R56320 | 3.7195 |
SPECIFICATION OF TITANIUM GR 9 SHEETS AND PLATES
| Standard | ASTM B265 / ASME SB265 |
|---|---|
| Dimension Standard | JIS, AISI, ASTM, GB, DIN, EN, etc |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Thickness | 0.3 mm to 120 mm |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Surface Finishing | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, Chequered, embossed, hair line, sand blast, Brush, etching, SATIN (Met with Plastic Coated) etc. |
CHEMICAL COMPOSITION OF TITANIUM GR 9 SHEETS AND PLATES
| Al max | Ti max | V max |
|---|---|---|
| 3 | 95 | 2.5 |
MECHANICAL PROPERTIES OF TITANIUM GR 9 SHEETS AND PLATES
| Element | Hardness Brinell | Hardness Knoop | Hardness Rockwell | Tensile Strength | Yield Strength |
|---|---|---|---|---|---|
| Titanium Gr. 9 | 256 | 278 | 24 | 620 Psi | 500 MPa |
💡 Practical Difference in Use
Use Titanium Grade 1 when: maximum corrosion resistance, excellent ductility, and superior formability are required for chemical, marine, and low-pressure applications.
→ Example: heat exchangers, chlorine processing, desalination systems, chemical tanks, and marine components.
Use Titanium Grade 2 when: moderate strength, outstanding corrosion resistance, and high weldability are needed for industrial, marine, and aerospace applications.
→ Example: pressure vessels, industrial piping, condensers, aircraft parts, and chemical processing equipment.
Use Titanium Grade 5 (Ti-6Al-4V) when: high strength, excellent fatigue resistance, and superior performance under elevated temperatures are required.
→ Example: aerospace frames, turbine components, medical implants, offshore equipment, and high-stress structural parts.
Use Titanium Grade 9 (Ti-3Al-2.5V) when: higher strength than CP titanium with better formability than Grade 5 is needed, especially for tubes and structural components.
→ Example: hydraulic tubing, aircraft fuel lines, sports equipment, marine hardware, and heat exchanger tubing.
When to Choose Titanium Grade 9?
Titanium Grade 9 (Ti-3Al-2.5V) is selected where a balance of high strength, excellent corrosion resistance, and superior formability is required compared to pure titanium grades.
Choose Titanium Grade 9 when:
- Higher strength than Grade 1 and 2 is required with good ductility
- Excellent corrosion resistance in marine and chemical environments is needed
- Lightweight material is required with moderate structural strength
- Service involves cyclic loading and vibration
- Used in aerospace, marine, and industrial fabrication sectors
- Superior cold forming and weldability compared to Grade 5 is important
Industries That Use Titanium Grade 9 Sheets and Plates
Titanium Grade 9 sheets and plates are widely used where a combination of strength, corrosion resistance, and formability is required in lightweight structural applications.
Used in lightweight structural and hydraulic components.
Uses
Aircraft tubing, brackets, airframe components.
Why Titanium Grade 9?
Excellent strength with better formability than Grade 5.
Used in corrosive seawater environments.
Uses
Seawater piping, condenser tubing, marine fittings.
Why Titanium Grade 9?
Outstanding resistance to saltwater corrosion with added strength.
Popular in lightweight performance equipment.
Uses
Bicycle frames, golf club shafts, sports components.
Why Titanium Grade 9?
High fatigue resistance with excellent weight savings.
Used in moderate pressure and corrosive environments.
Uses
Heat exchangers, piping, chemical handling equipment.
Why Titanium Grade 9?
Superior corrosion resistance with added mechanical strength.
Used in lightweight and high-vibration applications.
Uses
Exhaust systems, suspension links, chassis components.
Why Titanium Grade 9?
Excellent fatigue resistance with reduced vehicle mass.
Used in aggressive cooling and condensing systems.
Uses
Condenser tubing, evaporators, brine handling components.
Why Titanium Grade 9?
Excellent corrosion resistance with higher pressure capability.
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