Nimonic 263 Filler Wire
Metracore Alloys Private Limited manufactures and supplies Nimonic 263 filler wire to fabricators, aerospace subcontractors and turbine repair facilities across India and export markets. The stock covers TIG cut lengths, MIG spools, and coil form. Nimonic 263 filler wire is a nickel-cobalt-chromium-molybdenum welding consumable used to join and repair age-hardenable nickel alloy assemblies that operate under sustained heat. The alloy holds useful strength up to roughly 850°C. Chromium at 19–21% forms the protective oxide film in oxidising atmospheres. Cobalt at 19–21% and molybdenum at 5.6–6.1% together deliver solid-solution strengthening in the deposit. Titanium and aluminium form the Ni₃(Al,Ti) gamma prime precipitates that give the deposit its aged strength. What separates the grade from most precipitation-hardened filler metals is its resistance to strain-age cracking during post-weld heat treatment. Four designations identify the same material: the commercial alloy name, UNS N07263, Werkstoff No. 2.4650 and the ISO 18274 consumable classification. AMS 5966 governs the wire form, currently at revision D. The consumable suits both argon-shielded arc processes. Gas turbine builders, aero-engine fabricators and plant maintenance teams drive most of the demand we handle. Every consignment leaves our warehouse with an EN 10204 3.1 material test certificate and recorded heat and lot numbers.
Nimonic 263 Filler Wire Grades
Nimonic 263 filler wire trades under four designations, all describing the same nickel-cobalt-chromium-molybdenum chemistry.
Nimonic 263: The commercial alloy name is also written as ‘alloy 263’ or ‘C-263’. It marks an age-hardenable superalloy developed for welded sheet assemblies in gas turbines.
UNS N07263: The Unified Numbering System code. Purchase orders and test certificates carry this number as the unambiguous material identifier.
Werkstoff No. 2.4650: The European material number, allocated under EN 10027-2, appears across European drawings and mill documentation.
S Ni 7263 (NiCo20Cr20MoTi): The welding-consumable classification under ISO 18274. Unlike the three above, it applies specifically to solid wire and rod.
Nimonic 263 Filler Wire Specifications
Product Type
TIG filler wire, MIG welding wire, filler rods
Grade & Designations
Nimonic 263 — UNS N07263, Werkstoff No. 2.4650
Wire Diameter
0.8 mm to 3.2 mm
Standards
AMS 5966, ISO 18274 (S Ni 7263)
Nimonic 263 Filler Wire Types
Four supply formats cover most Nimonic 263 welding work: TIG filler wire, MIG welding wire, straight filler rods and general welding wire.
Nimonic 263 TIG Filler Wire
Nimonic 263 MIG Welding Wire
Nimonic 263 Filler Rods
Nimonic 263 Welding Wire
Reach out to Metracore Alloys Private Limited for ready stock of Nimonic 263 Filler Wire
Technical Details of Nimonic 263 Filler Wire
Nimonic 263 Filler Wire Chemical Composition
Composition limits follow AMS 5966. The figures below govern the deposit chemistry and, with it, oxidation resistance and aged strength.
| Element | Typical / Specified Content |
| Nickel | Balance |
| Chromium | 19–21% |
| Cobalt | 19–21% |
| Molybdenum | 5.6–6.1% |
| Titanium | 1.9–2.4% |
| Aluminium | 0.3–0.6% |
| Carbon | 0.04–0.08% |
| Iron | 0.7% max |
Nimonic 263 Filler Wire Welding Processes
Nimonic 263 Filler Wire Standards
AMS 5966 governs Nimonic 263 in welding wire form for argon-shielded arc processes. The alloy itself can also be joined by resistance spot, stitch and seam welding and by flash-butt welding, though those processes use no filler wire. European buyers work from ISO 18274 instead. There, the consumable is classified as S Ni 7263.
UNS N07263 and Werkstoff No. 2.4650 sit alongside these, though both identify alloy chemistry rather than consumable requirements.
One point causes recurring confusion on purchase orders. AMS 5872 covers 263 sheets, plates and strips; AMS 5886 covers bars, forgings and rings. Neither applies to filler wire. The governing specification depends on product form, welding process and any approval requirement written into the fabrication drawing.
Why Choose Metracore Alloys Private Limited for Nimonic 263 Filler Wire?
We stock Nimonic 263 filler wire across the 0.8 mm to 3.2 mm range in spool, coil and cut-length form, which takes lead time out of most orders. Chemical composition is verified against AMS 5966 limits, with dimensional inspection completed before dispatch.
Each consignment carries an EN 10204 3.1 material test certificate recording heat and lot numbers, so traceability holds through your own quality documentation. Sealed, moisture-resistant packaging protects the surface condition in transit. Domestic supply and export shipments both move from our warehouse, and bulk requirements sit alongside single-spool orders.
Send your diameter, form and quantity for a quotation and current stock position.
Nimonic 263 Filler Wire Sizes
Wire diameters span 0.8 mm to 3.2 mm across our stock range. MIG spools carry 0.8 mm, 0.9 mm and 1.2 mm wire. TIG rod diameters cover 1.6 mm, 2.0 mm, 2.4 mm and 3.2 mm, cut to 914 mm lengths as standard.
Coil supply suits automated feeding systems and bulk requirements. We pack cut lengths in sealed tubes to keep the surface free of moisture and handling contamination. Diameters outside the list above can be arranged in a firm order, subject to mill lead time.
A sheet thinner than 1.6 mm doesn’t need filler at all: autogenous TIG welding produces a sound joint, and adding wire only raises heat input without benefit.
Applications of Nimonic 263 Filler Wire
Aerospace fabrication takes a large share of demand, particularly aircraft engine sheet components where welded joints must retain ductility after ageing. Gas turbine manufacturing draws on the same property set for combustion liners, transition ducts, rings and casings.
Power generation plants specify the wire for turbine components and hot-gas-path repairs, where creep strength rather than oxidation sets the service life. Oxidation resistance holds well beyond the working temperature, to around 1,000°C. Combustion systems and general high-temperature fabrication rely on the deposit’s creep strength under thermal load. Chemical processing and industrial furnace equipment use it where heat and corrosive atmospheres combine.
Maintenance teams hold the wire for the salvage welding of aged turbine hardware, since the alloy accepts welding in the aged condition and can be re-aged afterwards.
Nimonic 263 Filler Wire FAQs
What is the UNS number of Nimonic 263 filler wire?
Nimonic 263 filler wire carries the UNS number N07263. The equivalent German designation is Werkstoff No. 2.4650, and the ISO 18274 consumable classification is S Ni 7263.
What sizes of Nimonic 263 filler wire are available?
Diameters range from 0.8 mm to 3.2 mm. MIG spools hold 0.8 mm, 0.9 mm and 1.2 mm wire; TIG rods come in 1.6 mm, 2.0 mm, 2.4 mm and 3.2 mm at 914 mm cut lengths.
Can Nimonic 263 filler wire be used for TIG welding?
Yes. TIG welding is the primary application for this consumable, covering manual joints up to roughly 4.8 mm and automatic butt welds up to 3.25 mm. Keep interpass temperature below 100°C.
Where is Nimonic 263 filler wire used?
Gas turbine and aero-engine fabrication account for most consumption, followed by power generation, combustion systems and chemical processing equipment. Maintenance teams also use it for salvage welding of aged turbine components.
What certificates are supplied with Nimonic 263 filler wire?
Each consignment ships with an EN 10204 3.1 material test certificate covering chemical analysis and dimensional results, with heat and lot numbers recorded for traceability.
How can I buy Nimonic 263 filler wire from Metracore Alloys Private Limited?
Send an enquiry stating diameter, form (spool, coil or cut length) and quantity. We’ll confirm stock availability, applicable specifications, and delivery schedule against your requirements.
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