High Standard Stainless Steel With Strict Inspection
Titanium Grade 9 (TA9)
Complete Technical Data Sheet for Titanium Grade 9 (TA9) Chemical Composition Mechanical Properties Physical Properties International Standards & Grade Equivalents Key Applications of Titanium Grade 9 (TA9) Aerospace & Defense Marine & Offshore Power Generation Our Latest Blogs
Description
Titanium Grade 9 (TA9) Available Product Forms
Seamless Tubing
Seamless Tubing ★
OD: 3mm – 100mm
Wall: 0.4mm – 10mm
Standards: ASTM B338, AMS 4943
Special: Bicycle tubing (butted, straight gauge)
Sheet & Plate
Thickness: 0.5mm – 50mm
Width: Up to 2000mm
Standards: ASTM B265
Surface: Pickled, annealed
Bars & Rods
Diameter: 6mm – 200mm
Shapes: Round, square, hex
Standards: ASTM B348
Finish: Hot finished, cold drawn, ground
Wire
Diameter: 0.5mm – 6mm
Types: ERTi-9 welding wire, spring wire
Standards: ASTM B863, AMS 4956
Spool: Coils (1-50 kg)
Complete Technical Data Sheet for Titanium Grade 9 (TA9)
| Element | Weight % | Function |
|---|---|---|
| Titanium (Ti) | Balance (~94.5%) | Base metal providing corrosion resistance |
| Aluminum (Al) | 2.5 – 3.5% | Alpha stabilizer – increases strength & reduces density |
| Vanadium (V) | 2.0 – 3.0% | Beta stabilizer – improves ductility & formability |
| Iron (Fe) | ≤0.30% | Impurity – controlled for optimal properties |
| Oxygen (O) | ≤0.12% | Interstitial strengthener |
| Carbon (C) | ≤0.05% | Impurity – minimized for better ductility |
| Nitrogen (N) | ≤0.02% | Interstitial element – controlled levels |
| Hydrogen (H) | ≤0.0125% | Impurity – causes embrittlement if excessive |
| Property | Value (Metric) | Value (Imperial) | Notes |
|---|---|---|---|
| Tensile Strength (Ultimate) | 620 – 690 MPa | 90 – 100 ksi | 40% stronger than Grade 2 |
| Yield Strength (0.2% offset) | 520 – 550 MPa | 75 – 80 ksi | Excellent for structural applications |
| Elongation at Break | 15 – 20% | 15 – 20% | Good ductility for forming |
| Reduction of Area | 30 – 40% | 30 – 40% | Indicates excellent formability |
| Elastic Modulus (Young’s) | 110 – 114 GPa | 16 – 16.5 x 10⁶ psi | Lower than steel (200 GPa) |
| Shear Modulus | 42 – 44 GPa | 6.1 – 6.4 x 10⁶ psi | Important for torsional loads |
| Poisson’s Ratio | 0.34 | 0.34 | Standard for titanium alloys |
| Hardness (Rockwell C) | 32 – 36 HRC | 32 – 36 HRC | Or 310-320 HV (Vickers) |
| Fatigue Strength (10? cycles) | 380 – 450 MPa | 55 – 65 ksi | Excellent for cyclic loading |
| Fracture Toughness (K1C) | 65 – 90 MPa√m | 59 – 82 ksi√in | Good resistance to crack propagation |
| Property | Value (Metric) | Value (Imperial) | Comparison |
|---|---|---|---|
| Density | 4.48 g/cm³ | 0.162 lb/in³ | 45% lighter than steel (7.85 g/cm³) |
| Melting Point (Solidus) | 1595°C | 2903°F | High temperature capability |
| Melting Point (Liquidus) | 1650°C | 3002°F | Solidification range: 55°C |
| Beta Transus Temperature | 940°C | 1724°F | Lower than Grade 5 (980°C) |
| Thermal Conductivity (20°C) | 7.2 W/m·K | 50 BTU-in/h-ft²-°F | Lower than steel (50 W/m·K) |
| Thermal Expansion (20-100°C) | 8.9 μm/m·K | 4.9 × 10⁻⁶ in/in·°F | Lower than austenitics (17 μm/m·K) |
| Specific Heat (20°C) | 540 J/kg·K | 0.129 BTU/lb·°F | Standard for titanium alloys |
| Electrical Resistivity (20°C) | 1.70 μΩ·m | 681 μΩ·in | Poor conductor vs copper |
| Magnetic Response | Non-magnetic (paramagnetic) | MRI safe |
| Standard | Designation | Material Number | Region/Country |
|---|---|---|---|
| UNS (Unified Numbering) | R56320 | – | USA (Primary) |
| ASTM | Grade 9 | – | USA |
| AMS (Aerospace) | 4943, 4944, 4945, 4946, 4956 | – | USA Aerospace |
| Chinese Standard | TA9 | GB/T 3620.1 | China |
| Russian GOST | BT9 | – | Russia |
| EN (European) | 3.7124 | Ti-3Al-2.5V | Europe |
| German DIN | 3.7124 | TiAl3V2.5 | Germany |
| Japanese JIS | JIS H 4600 Class 60-E | – | Japan |
| Trade Names | “Half 6-4”, Ti-3-2.5 |
Why Grade 9 Became The Gold Standard For Premium Bicycle Frames
Thin-Wall Manufacturing
Only Grade 9 can be reliably drawn into ultra-thin seamless tubes (0.4-0.9mm walls, 30-50mm diameter) without cracking. This enables frame builders to achieve the perfect balance of weight, strength, and ride quality impossible with Grade 5 or steel.
Weldability for Custom Frames
Excellent TIG weldability allows custom frame builders to create one-off geometries without special heat treatment. Lower aluminum content (vs Grade 5) means cleaner welds with minimal HAZ effects—critical for handmade artisan frames.
Lifetime Durability
Exceptional fatigue life means Grade 9 frames routinely last 30+ years with proper care. No paint to chip, no rust to develop, no carbon delamination—just timeless performance that actually improves with age as the rider bonds with the bike.
Perfect Strength-to-Weight
620 MPa tensile strength allows frame weights of 1200-1500g (size 56cm) while maintaining race-proven durability. Stronger than steel at half the weight, easier to form than Grade 5—the Goldilocks alloy for performance cycling.
Key Applications of Titanium Grade 9 (TA9)
Aerospace & Defense
- Aircraft Components: Landing gear, fasteners, and structural elements requiring high strength and corrosion resistance
- Military Hardware: Armor plating, weapon systems, and specialized equipment components
Marine & Offshore
- Seawater Systems: Pumps, valves, and piping for offshore platforms and marine vessels
- Propulsion Components: Propeller shafts, marine hardware, and subsea equipment
Power Generation
- Nuclear Components: Reactor internals, steam generator tubing, and fuel handling equipment
- Geothermal Systems: Heat exchangers and piping for high-temperature, corrosive environments
What Our Clients Say
“We switched to Hastelloy B2 tubing for our hydrochloric acid lines, and the performance has been flawless. There are no signs of corrosion after months of continuous operation. The reliability of this material is outstanding and gives us great peace of mind.”
James Anderson
Offshore Equipment Manufacturer
“For our aerospace fastener application, consistency is critical. Every batch of TA9 from this supplier meets our stringent mechanical property requirements with complete documentation. Reliable quality we can count on.”
James Anderson
Quality Manager
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Frequently Asked Questions
What makes Titanium Grade 9 different from other titanium alloys?
Titanium Grade 9 is an alpha-beta alloy containing aluminum and vanadium, providing higher strength than commercially pure grades while maintaining excellent corrosion resistance and moderate ductility. This combination makes it ideal for structural applications requiring both strength and environmental resistance.
Can you provide material certificates and test reports?
Yes, every shipment includes comprehensive material test reports (MTRs) with chemical analysis, mechanical properties verification, and full traceability documentation. We also provide third-party certifications when required for specific industry standards.
What forms and sizes are available?
We supply Titanium Grade 9 in various forms, including bars, sheets, plates, tubes, and custom-forged components. Standard sizes are maintained in inventory, and custom dimensions can be manufactured to your specifications.
How do you ensure consistent quality across batches?
Our ISO 9001-certified manufacturing process includes rigorous incoming material inspection, in-process monitoring, and final product testing. Advanced spectral analysis and mechanical testing ensure every batch meets specified requirements with complete documentation.
Do you offer technical support for material selection?
Absolutely. Our team of metallurgical engineers provides expert consultation to help you select the optimal Titanium Grade 9 specification for your application, considering factors like operating environment, mechanical requirements, and processing considerations.
Can you machine TA9 components to the final dimensions?
Yes, our precision machining capabilities include CNC turning, milling, grinding, and EDM services. We can deliver ready-to-use components with tolerances as tight as ±0.001″ and surface finishes to 8 Ra microinches.
Can TA9 be welded, and what precautions are needed?
Yes, TA9 has excellent weldability using TIG, plasma arc, and electron beam welding processes. Proper shielding gas (argon) and clean joint preparation are essential. We can provide detailed welding procedure specifications (WPS) for your application.
What is the typical lead time for TA9 products?
Standard products from inventory typically ship within 5-7 business days. Custom manufacturing lead times range from 4-8 weeks, depending on complexity, quantity, and required certifications. Rush orders can often be accommodated with premium scheduling.
Shipping and Delivery
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