AMS 4954 Aerospace Gr5 Titanium Wire Description
Product Introduction
AMS 4954 Aerospace Gr5 Titanium Wire(Ti-6Al-4V/UNS R56400) is an α+β titanium alloy welding wire conforming to AMS 4954 for aerospace TIG welding applications. The specification defines strict requirements for chemical composition, cleanliness, and feedability, purpose-built for welding aircraft structural and engine components. Deposited weld metal delivers UTS ≥895 MPa at a density of just 4.43 g/cm³, with weld strength that fully matches the parent metal. The standard welding wire for aerospace Gr5 titanium alloy structural fabrication. Available from φ0.5 mm to φ4.0 mm, as straight wire or precision layer-wound coil.
Technical Specifications
1. Basic Information
Product Name | AMS 4954 Aerospace Gr5 Titanium Wire |
Grade Equivalents | AMS 4954/ASTM Gr5/UNS R56400/Ti-6Al-4V |
Standards | AMS 4954, ASTM B863, AWS A5.16 (ERTi-5) |
Supply Forms | Straight wire, Precision layer-wound coil |
Surface Conditions | Bright finish, Cleaned |
Diameter Range | φ0.5-φ4.0 mm |
Straightness | ≤2/1000 |
2. Chemical Compositions
Ti | Al | V | Fe | O | C | N | H | Y | Total Others |
Balance | 5.50-6.75% | 3.50-4.50% | ≤0.30% | ≤0.20% | ≤0.08% | ≤0.05% | ≤0.015% | ≤0.005% | ≤0.40% |
3. Mechanical Properties
Tempers | UTS (MPa) | YS (MPa) | Elongations (%) |
Annealed | ≥895 | ≥825 | ≥10 |
4. Physical Properties
Properties | Values |
Density | 4.43 g/cm³ |
Melting Points | 1604-1660°C |
Elastic Modulus | 110 GPa |
Coefficient of Thermal Expansion | 8.6×10⁻⁶/°C |
Thermal Conductivity | 6.7 W/(m·K) |
Magnetic Properties | Non-magnetic |
Max. Service Temperature | ≤350°C continuous |
Features and Advantages
- A.AMS 4954 certified: Purpose-built for aerospace Gr5 titanium alloy TIG welding with fully traceable quality system.
- B.High-strength deposited weld: Weld metal UTS ≥895 MPa, fully matching Gr5 parent metal properties.
- C.Dense, defect-free welds: Strict cleanliness controls ensure welds pass aerospace X-ray and fluorescent penetrant NDT.
- D.Dramatic weight savings: Density 4.43 g/cm³ -57% of steel-delivering significant weight reduction in aerospace welded assemblies.
- E.Precision wire feeding: Precision layer-wound coils with uniform feed tension; compatible with automated aerospace TIG welding.
- F.Certified per batch: Full test reports and material certificates with each lot, meeting airworthiness traceability requirements.
Performance Solutions
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1. Problem: Standard industrial Gr5 wire lacks sufficient cleanliness, causing high rejection rates from weld porosity and inclusions.
Solution: AMS 4954 Aerospace Gr5 Titanium Wiremeets aerospace cleanliness standards. Welds pass rigorous NDT. Defect rates drop significantly.
2. Problem: Filler wire composition deviates from Gr5 parent metal, producing weld joints weaker than the base material.
Solution: AMS 4954 Aerospace Gr5 Titanium Wire has tightly controlled composition. Weld UTS ≥895 MPa, fully matching parent metal.
3.Problem: Surface contamination on welding wire causes aerospace weld embrittlement and reduced fatigue life.
Solution: AMS 4954 Aerospace Gr5 Titanium Wire undergoes rigorous cleaning and sealed packaging. Contaminant-free surface eliminates weld embrittlement.
4.Problem: Poorly wound industrial spools cause feed jams, reducing automated aerospace welding productivity.
Solution: AMS 4954 Gr5 wire is precision layer-wound. Feeds smoothly without breaks. Welding efficiency and production throughput rise significantly.
Applications
- TIG welding of Gr5 titanium alloy airframe frames, beams, bulkheads, and landing gear load-bearing structures. AMS 4954 certified for airworthiness approval.
- Welding of engine fan blades, compressor cases, exhaust system brackets, and peripheral titanium alloy structures. Stable high-temperature strength meets engine requirements.
- Welding of rocket propellant tanks, satellite propulsion lines, and spacecraft titanium alloy load-bearing frames. Dense welds suited for high-vacuum and cryogenic conditions.
- Defect repair and fill welding of aerospace titanium alloy precision castings. Full composition match. Repaired zone properties equal parent metal.
- Welding of high-pressure hydraulic lines, pneumatic ducts, and titanium alloy fittings. Pressure-tight, fatigue-resistant welds meeting aerospace hydraulic system requirements.