AMS 4951 Grade 12 Titanium Alloy Wire Description
AMS 4951 Grade 12 titanium alloy wire (UNS R53400) is a premium α titanium alloy formulated with Ti-0.3Mo-0.8Ni composition. Produced in strict accordance with updated AMS 4951 aerospace standards, this alloy welding wire integrates molybdenum and nickel elements to achieve steady mechanical properties and exceptional weldability.
It possesses prominent anti-corrosion capacity and reliable comprehensive performance, perfectly suited for precision welding and structural fabrication work. The material gains extensive application in aerospace, offshore marine, chemical processing and industrial equipment manufacturing fields.
Available in fully annealed, descaled and polished finished status, all items pass rigorous batch inspection to satisfy aerospace and industrial usage criteria. Complete MTR documents and full production traceability are provided for each delivery, making it an ideal high-performance welding material for professional engineering projects.
Technical Specifications
1. Diameter ranges
- 0.1, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 6.5 mm.
2. Supply Forms
- Straight wire, coil wire, spooled wire.
- Pickled surface, bright surface, etc.
3. Basic Product Information
| Items | Details |
| Product name | Grade 12 Titanium Alloy Wire |
| Execution standards | AMS 4951, ASTM B863 |
| Supply form | Straight wire, coil wire |
| Surface condition | Pickled, bright |
4. Chemical Composition
| Elements | Ti | Mo | Ni | Fe | C | N | H | O |
| Content % | Balance | 0.2-0.4 | 0.6-0.9 | ≤0.30 | ≤0.08 | ≤0.03 | ≤0.015 | ≤0.25 |
5. Mechanical Properties
| Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| Annealed (M) | 480–550 | 345–410 | ≥18 |
| Cold drawn (Y) | 550–620 | ≥410 | ≥10 |
6. Physical Properties
| Items | Values |
| Density | 4.51 g/cm³ |
| Elastic modulus | 105 GPa |
| Melting point | ~1668 ℃ |
| Magnetism | Nonmagnetic |
7. Environmental Performance
| Items | Performance |
| Service temperature | From -253 ℃ to 350 ℃ |
| Corrosion resistance | Superior in reducing acids, chlorides, brines |
| Crevice corrosion | Outstanding, better than Grade 2 and Grade 5 |
| Weldability | Excellent, no special treatment needed |
Product Features
- Superior corrosion resistance: Best among pure and near-α titanium grades.
- Good strength: Higher than Grade 1, 2, 3and 4.
- Excellent weldability: No cracking, no preheat needed.
- Light weight: Density only 56% of steel.
- Non-magnetic: Safe for avionics.
- Crevice corrosion resistant: Outstanding in seawater.
Aviation Applications
1. Key applications scenery
| Applications | Advantages |
| Hydraulic systems | Hydraulic lines, resists aggressive fluids |
| Chemical processing | Handles reducing acids |
| Marine aviation | Seawater-exposed Fasteners, lockwire, springs for seaplanes & carrier aircraft |
| Heat exchangers | High-temperature brine service |
| Fuel systems | Fuel tubing, vent lines (resists Skydrol, acidic/corrosive fluids), fuel vapor corrosion resistance |
Quality Commitment
Manufactured in strict accordance with AMS 4951 aerospace specifications.
Every production batch is supplied with an official Material Test Report for full material traceability.
Our multi-level quality inspection includes chemical analysis, mechanical testing, dimensional verification and surface condition inspection.
Custom sizes, surface finishes and tempers (M, Y) are available upon inquiry.