AMS 4900 Grade 1 Titanium Wire Description
AMS 4900 Grade 1 Titanium Wire is an aerospace-grade commercially pure titanium wire. It meets the AMS 4900 specification and is classified as an α-phase titanium alloy.
Unlike α-β alloys such as TC4 or β alloys like TB13, Grade 1 maintains a single-phase α structure at room temperature. This unique microstructure provides: Excellent ductility, superior corrosion resistance, high purity, etc.
With strictly controlled impurities (H ≤ 0.015%, O ≤ 0.18%), Grade 1 wire is widely used in aircraft airframe structures, hydraulic tubing, corrosion-resistant fasteners, and non-critical structural components where formability and corrosion resistance are essential.
Technical Specifications
1. Technical Parameters for Aviation
1). Diameter ranges for aviation
Common aviation sizes: φ0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0 mm.
Ultra-fine sizes for precision components: φ0.1, 0.15, 0.2, 0.3, 0.4 mm.
2). Aviation-grade surface treatment
|
Surface type |
Process |
Characteristics |
Used for |
|
Pickled |
HF+HNO₃ acid immersion |
Matte, uniform, oxide-free, Ra ≤ 0.8 μm |
General aviation components, fasteners |
|
Bright |
Mechanical or electrolytic polishing |
Mirror-like, smooth, Ra ≤ 0.4μm |
Precision instruments, welding wire |
|
Drawn (as-drawn) |
Direct from drawing dies |
Natural metal surface, fine lines |
High-strength wires, lock wire |
|
Degreased |
Solvent/alkaline cleaning |
Residue-free, non-etched |
Welding filler wire (ERTi-1) |
3). Production Process & Equipment
- Equipped with an imported Danieli continuous rolling line–a world-class titanium alloy wire production system.
- Ultra-high straightness: φ5 mm wire straightness deviation ≤2/1000.
- Result: Mass production capability with consistent, stable supply for high-end Ti, Ni, Zr alloy wires.
2. Aviation Specifications
1). Basic Product Information
|
Item |
Details |
|
Product name |
AMS 4900 Grade 1 Titanium Wire |
|
Equivalent |
Gr.1 (ASTM), CP titanium Grade 1 |
|
Execution standards |
AMS 4900, ASTM B863, GB/T 3623-2022 |
|
Supply form |
Straight wire, coil wire |
|
Surface condition |
Pickled (Ra≤ 0.8 μm), bright (Ra≤ 0.4 μm) |
2). Chemical Composition (Aviation Grade)
|
Element |
Ti |
Fe |
C |
N |
H |
O |
others |
|
Content% |
Balance |
≤0.20 |
≤0.08 |
≤0.03 |
≤0.015 |
≤0.18 |
≤0.4 |
3). Mechanical Properties (Annealed Condition)
|
Condition |
Tensile strength (MPa) |
Yield strength (MPa) |
Elongation (%) |
Hardness HV |
|
Annealed (M) |
≥ 240 |
≥ 138 |
≥ 20 |
120–150 |
4). Physical Properties for Aviation
|
Item |
Value |
|
Density |
4.51 g/cm³ (56% of steel) |
|
Elastic modulus |
116 GPa |
|
Melting point |
~1668 ℃ |
|
Thermal expansion |
~8.6×10⁻⁶/℃ |
|
Magnetism |
Non-magnetic |
5). Aviation Environmental Performance
|
Item |
Performance |
|
Service temperature |
From -253 ℃ to 300 ℃ |
|
Corrosion resistance |
Excellent in seawater, salt spray, and chemical environments |
|
Weldability |
Excellent–ideal for TIG welding |
Aviation Product Features
- Superior Corrosion Resistance: Outstanding in seawater and chemical media.
- High Purity: Titanium content ≥ 99.5% for consistent performance.
- Light Weight: Density only 56% of steel.
- Excellent Ductility: Can be bent, coiled, and formed without cracking.
- Non-magnetic: Safe for avionics and sensitive instruments.
- Good Weldability: Perfect for welding titanium structures.
Aviation Applications
- Air-frame structures: Non-critical brackets, support wires, cable clamps.
- Hydraulic systems: Corrosion-resistant tubing and fittings.
- Fasteners: Rivets, washers, lock wires for non-high-strength applications.
- Welding wire: ERTi-1 filler wire for titanium welding, meets the standard AMS 4951.
- Heat exchangers: Tubing and components for thermal management.
- Chemical systems: Piping and components for fuel and hydraulic systems.
Quality Control
- Manufactured in strict accordance with AMS 4900 and ASTM B863 indurstial and aerospace specification.
2. Each batch comes with a complete Material Test Report (MTR) for full traceability.
3. Multi-step quality control includes chemical analysis, mechanical testing, dimensional checks, straightness,and surface inspection.
4. Custom sizes and surface finishes are available on request.