Nimonic 90 Filler Wire
Metracore Alloys Private Limited supplies, stocks, and exports Nimonic 90 filler wire to fabricators, gas turbine overhaul units, and high-temperature engineering contractors across India and overseas markets. We hold it in spooled, coil, and straight-length form, in diameters from 0.8 mm to 3.2 mm, against AMS 5829. Nimonic 90 is a nickel-chromium-cobalt alloy strengthened by titanium and aluminium additions. The filler chemistry sits at a nominal 56Ni-19.5Cr-16.5Co-2.5Ti-1.5Al, and AMS 5829 calls for vacuum induction melting, which pulls residual lead, silver and bismuth down to 20, 5 and 1 ppm, respectively. Titanium and aluminium drive gamma prime precipitation during post-weld ageing. That reaction is where the deposit gains its strength. Chromium at 18.00 to 21.00% forms the protective surface oxide, while cobalt at 15.00 to 18.00% stabilises the matrix under sustained thermal loads.
Base-metal Nimonic 90 carries UNS N07090 and Werkstoff number 2.4632, serving as an age-hardenable, creep-resistant alloy at temperatures up to 920°C. Matching filler answers the same duty. Four benefits govern selection: high-temperature strength, creep resistance, stress-rupture resistance, and oxidation resistance in hot gas paths. Aerospace, gas turbines, power generation, petrochemical plants, and general high-temperature engineering all draw on it. TIG dominates, though MIG applies where deposition rate matters and a qualified procedure supports the change. Rods, precision-wound spools and coils cover the supply formats.
Every despatch carries heat-numbered traceability and a mill test certificate. Ask us to confirm sizes and stock positions before you finalise your welding procedure specifications. It’s the quickest way to avoid a substitution mid-project.
Nimonic 90 Filler Wire Grade & Designations
Two designation families apply, and they shouldn’t be confused. One names the alloy; the other governs the consumable.
Nimonic 90: The common name for the wrought nickel-chromium-cobalt composition, deposited by a filler drawn to matching analysis.
UNS N07090: The Unified Numbering System identifier, quoted on orders and certificates to identify the composition without ambiguity.
W.Nr. 2.4632: The European material number, cross-listed as 2.4969 and used instead of the UNS code on EN-based specifications.
AMS 5829: The filler-metal specification proper, covering vacuum-induction-melted heat-resistant nickel alloy welding wire. It sets tighter residual limits than the base-alloy standards, so quote it when ordering.
AWS A5.14 and ASME SFA-5.14 carry no ER-prefix classification for N07090.
Nimonic 90 Filler Wire Specifications
Product Type
Filler Wire / Filler Rod
Grade & Designations
Nimonic 90
Wire Diameter
0.8 mm to 3.2 mm
Standards
AMS 5829, MSRR 9500/4, EN ISO 18274 (S Ni 7090)
Nimonic 90 Filler Wire Types
Two supply forms cover the working range, with a third term used loosely across both: TIG filler wire, MIG welding wire, straight-length rods and general welding wire.
Nimonic 90 TIG Filler Wire
Nimonic 90 MIG Welding Wire
Nimonic 90 Filler Rods
Nimonic 90 Welding Wire
Reach out to Metracore Alloys Private Limited for ready stock of Nimonic 90 Filler Wire
Technical Details of Waspaloy Filler Wire
Nimonic 90 Filler Wire Chemical Composition
AMS 5829 fixes the limits below. Cobalt and iron differ from bar and sheet chemistry, so the consumable analysis governs.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 18.00 – 21.00 |
| Cobalt (Co) | 15.00 – 18.00 |
| Titanium (Ti) | 2.00 – 3.00 |
| Aluminium (Al) | 1.00 – 2.00 |
| Carbon (C) | 0.13 max |
| Iron (Fe) | 1.50 max |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Sulphur (S) | 0.015 max |
| Copper (Cu) | 0.20 max |
| Zirconium (Zr) | 0.15 max |
| Boron (B) | 0.02 max |
| Lead (Pb) | 0.002 max (20 ppm) |
| Silver (Ag) | 0.0005 max (5 ppm) |
| Bismuth (Bi) | 0.0001 max (1 ppm) |
Two elements do the strengthening. Titanium and aluminium precipitate gamma prime. Chromium builds an oxide film resisting scale. Iron, manganese and silicon stay capped because each dilutes the chemistry and raises hot-cracking risk. Carbon is capped at 0.13% rather than added to a target. The carbon is present in the form of grain-boundary carbides that help restrain creep. Lead, silver and bismuth are held at parts-per-million levels because these low-melting residuals cause hot cracking in the weld, and vacuum induction melting is what removes them.
Nimonic 90 Filler Wire Welding Processes
Nimonic 90 Filler Wire Standards
AMS 5829 governs Nimonic 90 welding wire, and its current revision was stabilised in 2022. Other designations attach to the alloy or to project requirements:
- AMS 5829 for wire chemistry, melting practice and residual limits
- UNS N07090 as the alloy identifier on certificates
- W.Nr. 2.4632 for European referencing
- MSRR 9500/4 for aero-engine welding consumable approval
- BS 3075 NA 19 and MSRR 7137 identify the parent Nimonic 90 material this filler is used to weld, not the filler itself
- EN ISO 18274:2023 classifies it as S Ni 7090 (NiCr20Co18Ti3), with no AWS A5.14 equivalent.
- EN 10204 3.1 for the inspection certificate format
Which document applies depends on filler form, welding process, parent material and service condition.
Why Choose Metracore Alloys Private Limited for Nimonic 90 Filler Wire?
Metracore Alloys Private Limited stocks Nimonic 90 filler wire in TIG-rod and MIG-spool formats, sourced to AMS 5829, with MSRR 9500/4 material available for aero-engine work that requires approved consumables. Inspection covers chemical composition verification against the AMS 5829 limits, dimensional checking and surface assessment. Material test certificates accompany every consignment, with heat and lot numbers carried through to the packing so traceability holds from mill to weld station. Domestic supply, export orders, bulk quantities and non-standard spool weights are all handled. Send us your diameter, form and specification for a quotation.
Nimonic 90 Filler Wire Sizes
Diameter selection follows joint thickness, root gap and welding position.
- Wire diameter (GMAW spooled): 0.8, 0.9, 1.0, 1.2 and 1.6 mm
- Filler rod diameter (GTAW): 1.6, 2.0, 2.4 and 3.2 mm
- Spool size: 100, 200 and 300 mm diameter, precision layer-wound
- Coil size: made to order against the required net weight
- Straight length: 914 mm and 1000 mm, bundled and flag-tagged
Thin-wall repair takes a 1.6 mm rod or finer. Heavier fabrication moves up to 3.2 mm.
Properties of Nimonic 90 Filler Wire
Eight characteristics account for the specification of this consumable for hot-section work.
- High-temperature strength: Gamma prime precipitation after ageing pins dislocation movement, so the deposit carries load at temperature.
- Creep resistance: The same precipitate structure slows time-dependent deformation under sustained stress.
- Stress-rupture strength: Welded joints hold together through long-duration loading at operating temperature.
- Oxidation resistance: A chromium oxide film forms on the weld surface and resists scaling through repeated heating and cooling.
- Precipitation-hardening capability: The weld responds to post-weld heat treatment rather than relying on as-deposited properties.
- Resistance to high-temperature deformation: Welded assemblies stay dimensionally stable in service.
- Thermal stability: Microstructural drift stays limited across long exposure to temperature.
- Suitability for demanding aerospace and turbine environments: Those seven traits together let the joint perform as the parent alloy does.
Applications of Nimonic 90 Filler Wire
Nimonic 90 Filler Wire FAQs
What filler wire is used for welding Nimonic 90?
Matching Nimonic 90 filler wire to AMS 5829 is the standard choice. Where a project accepts non-matching filler, the procedure specification names it.
What are the main properties of Nimonic 90 filler wire?
Strength and creep resistance at temperature define it, backed by stress-rupture performance and oxidation resistance. Titanium and aluminium supply that strength through gamma-prime precipitation.
What sizes of Nimonic 90 filler wire are available?
Diameters span 0.8 mm to 3.2 mm. Spooled wire covers 0.8 to 1.6 mm; rods cover 1.6 to 3.2 mm in 914 mm and 1000 mm lengths.
Can Nimonic 90 filler wire be used for TIG welding?
Yes. GTAW is the primary process here, and its controlled heat input suits alloys prone to cracking under thermal load.
Is Nimonic 90 filler wire suitable for MIG welding?
GMAW applies where deposition rate justifies it, provided a qualified procedure covers transfer mode, shielding gas and inter-pass limits. GTAW parameters won’t carry over.
Where is Nimonic 90 filler wire used?
Gas turbine repair, aircraft engine fabrication, power generation hot-section work and exhaust systems take most of it.
Which standards apply to Nimonic 90 filler wire?
AMS 5829 governs the consumable. UNS N07090 and W.Nr. 2.4632 identify the alloy; BS 3075 NA 19 and MSRR 7137 apply per project and region.
What certificates are supplied with Nimonic 90 filler wire?
A material test certificate showing chemical analysis, heat number and specification conformity ships with every consignment. EN 10204 3.1 documentation is available on request.
How can I buy Nimonic 90 filler wire from Metracore Alloys Private Limited?
Send your diameter, supply form, quantity, and specification to our sales team, and we’ll quote against current stock and lead time.
Products
Exporter, Manufacturer & Supplier of Waspaloy Filler Wire in various sizes and forms.