Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
A286 Welding Rod
A286 welding rod (also called A286 filler wire, A286 TIG rod, matching A286 weld filler) is A286 wire produced specifically for welding-filler use, supplied as straight rod for TIG (GTAW) welding or as coiled wire for MIG (GMAW) and SAW (submerged-arc) welding. TorqBolt manufactures A286 welding rod to AMS 5853 (consumable electrode A286 welding wire, the dominant aerospace welding filler spec), AMS 5805 (welding electrode for A286), and AMS 5732 bar specification for cold-drawn welding rod variants. Diameters 0.8-3.2 mm; straight-rod 1-2 m length for TIG, coil for MIG/SAW. Used as matching weld filler for A286-to-A286 welding on aerospace fasteners, jet-engine combustor liner repair, gas-turbine welding, and high-temperature structural welding. See parent A286 rods, related A286 wire and wire rod, and the canonical chemical composition + A286 weldability (AMS 5853).
About A286 Welding Rod
A286 welding rod matches the parent A286 base-metal chemistry (UNS S66286) so that the weld zone develops the same precipitation-hardening response and high-temperature strength as the base metal after post-weld solution treatment + aging. The filler is produced by cold-drawing A286 wire from sol-treated bar through progressive dies down to the final filler diameter (0.8-3.2 mm typical). For TIG welding, supplied as straight 1-2 m length rod tied in 5 kg or 10 kg packs; for MIG welding, supplied as coiled 15 kg spool wire. Surface finish is typically pickled-and-passivated to prevent contamination of the weld pool. Critical: A286 welding rod is supplied in solution-treated condition (NOT aged), aging only after welding, when the entire welded assembly is post-weld solution-treated and aged together. Pre-aged welding rod cannot be welded successfully without re-solutioning.
A286 Welding Rod Standards & Process Suitability
TorqBolt produces A286 welding rod for five primary welding processes:
- TIG / GTAW (gas tungsten arc welding), Most common A286 welding process for aerospace and high-quality applications. AMS 5853 straight rod 1-2 m × 0.8-3.2 mm ⌀ with argon shielding. Best weld-pool control and lowest defect rate.
- MIG / GMAW (gas metal arc welding), Higher-deposition welding for industrial repair and production. Coiled AMS 5853 wire 0.8-1.6 mm ⌀ with argon-helium-CO₂ shielding. Higher defect rate vs TIG; used when speed matters.
- SAW (submerged-arc welding), Heavy-section production welding, A286 coiled wire 1.6-3.2 mm with granular flux. Used for thick-section structural welding.
- Plasma arc welding (PAW), High-precision aerospace welding, uses constricted arc for narrow weld bead. AMS 5853 0.8-1.6 mm filler. Used for jet-engine combustor and turbine blade repair.
- Electron-beam welding (EBW), Vacuum welding without filler in some cases, or with thin A286 filler insert for joint preparation. Used for aerospace high-criticality bolted-component welding.
A286 Welding Rod Sizes & Pack Reference
| Diameter | TIG straight rod | MIG / SAW coil | Length | Pack | Standard spec |
|---|---|---|---|---|---|
| 0.8 mm (.030 inch) | ✓ | ✓ | 1 m / coil | 5 kg / 15 kg coil | AMS 5853 |
| 1.0 mm (.040 inch) | ✓ | ✓ | 1 m / coil | 5 kg / 15 kg coil | AMS 5853 |
| 1.2 mm (.045 inch) | ✓ | ✓ | 1 m / coil | 5 kg / 15 kg coil | AMS 5853 |
| 1.6 mm (1/16 inch) | ✓ | ✓ | 1 m / coil | 5 kg / 15 kg coil | AMS 5853 |
| 2.0 mm (5/64 inch) | ✓ | 1 m straight | 5 kg pack | AMS 5853 | |
| 2.4 mm (3/32 inch) | ✓ | 1 m straight | 5 kg pack | AMS 5853 / 5805 | |
| 3.2 mm (1/8 inch) | ✓ | 1 m straight | 5 kg pack | AMS 5853 / 5805 | |
| 4.0 mm (5/32 inch) | ✓ | 1 m straight (custom) | 5 kg pack | AMS 5805 |
A286 Welding Rod Manufacturing Process
Every a286 welding rod TorqBolt ships traces back to a vacuum-induction-melted plus vacuum-arc-remelted (VIM-VAR) ingot meeting AMS 5731 / 5732 chemistry. Process route:
- VIM-VAR ingot input: AMS 5731 / 5732 chemistry, same as base-metal A286. Aerospace lots double-melted (VIM + VAR) for inclusion control.
- Hot rolling to wire-blank: Ingot broken down to billet, hot-rolled to wire-rod blank ⌀ ~6-10 mm at 1095-1150 °C.
- Pickling: Wire-rod pickled in HNO₃ + HF to remove mill scale. Surface inspected per ASTM E45.
- Cold drawing through progressive dies: Wire drawn through 8-15 progressive dies, each pass reduces ⌀ by ~10-20 %. Final filler ⌀ achieved after multiple passes with intermediate sol-annealing if needed.
- Inter-pass solution annealing: Bright-anneal in hydrogen atmosphere at 1650 °F (899 °C) restores ductility for next drawing pass. 2-3 anneals typical from wire-rod to 1.6 mm final.
- Final solution treatment: Solution-treated condition only, NOT aged. A286 welding rod is supplied unaged so it can be welded; post-weld aging done with full assembly.
- Surface preparation: Final pickle + HNO₃ rinse + passivate per ASTM A967 Type II. Critical for clean welding, surface contamination causes weld porosity and inclusions.
- Cut to length (TIG straight rod): Wire cut to 1 m straight rods, end-faced, packed in 5 kg paper-wrapped bundles.
- Coil winding (MIG / SAW): Wire wound onto 15 kg spools for MIG / SAW production welding. Layer-wound for smooth feed without loops.
A286 Welding Rod Inspection & Certification
Each lot ships with a signed inspection certificate. Aerospace orders default to AS9100D first-article reporting per AS9102. Industrial orders default to EN 10204 type 3.1; sour-service and offshore step up to type 3.2 with third-party witness. Inspection scope:
- Diameter verified by laser micrometer per AMS 5853 tolerance (typ. ±0.05 mm on 1.6 mm filler).
- Surface inspection 100 % visual for drawing-die scoring, surface laps, edge defects.
- Surface cleanliness verified by xylene wipe, no visible contamination.
- Hardness sample 1 per heat per ASTM E384.
- Tensile coupon from each heat per ASTM E8, sol-treated condition.
- Magnetic permeability < 1.005 per ASTM A342.
- Spectrochemical analysis per ASTM E1086 / E1019 for chemistry compliance.
- AS9102 first-article on aerospace lots; EN 10204 3.1 commercial heats.
A286 Welding Rod Installation & Service Notes
Welding rod is consumable, torque does not apply. Welding parameters: TIG welding A286 typically uses 80-150 A current, 12-15 V arc voltage, argon shielding 15-20 L/min, 100 % argon backing for root-pass critical applications. Travel speed 100-250 mm/min for 1.6 mm filler. Pre-heat NOT required, A286 is pre-heated only when joining > 50 mm thick sections. Post-weld heat treatment: solution-treat 1650 °F → quench → age 1325 °F × 16 hours to develop full mechanical properties in the weld zone. Without post-weld solution treatment, weld zone properties are 60-70 % of parent metal.
A286 Welding Rod Applications by Industry
A286 welding rod is matched filler for A286-to-A286 welding:
- Aerospace jet-engine combustor repair: AMS 5853 TIG rod for jet-engine combustor liner crack repair, turbine vane platform repair. Post-weld sol-treatment + aging restores parent metal properties. A286 jet engine fasteners.
- Gas-turbine welding production: AMS 5853 MIG / TIG for industrial gas-turbine combustor liner manufacture, casing repair, exhaust diffuser welding. A286 gas turbine applications.
- Aerospace structural component welding: TIG welding A286 fittings, mounting brackets, stringers using AMS 5853 filler. Post-weld aging develops full mechanical properties.
- Pressure-vessel weld overlay: A286 weld overlay on dissimilar substrate for nuclear and petrochemical pressure-vessel hot-section. Provides A286 corrosion + temperature performance on cheaper substrate.
- Cryogenic LNG vessel welding: A286 filler for LNG storage-vessel and hydrogen-tank welded internal hardware. Retains 85 % of toughness at -196 °C post-weld + sol-treatment + aging.
- Custom A286 fabrication: TIG and MIG welding of custom A286 fabrications, combining bar, sheet, plate, tube into welded assemblies for industrial process equipment.
Governing Standards & Material Specifications
Every A286 rod product is released against the applicable industry standard. EN 10204 type 3.1 mill certificates ship with every order. See A286 AMS / ASTM specifications hub for full spec scope.
| Authority | Specification | Coverage |
|---|---|---|
| ASTM | A453 grade 660 Cl. A/B/C/D | High-temperature bolting material |
| AMS | 5731 | Bar / forging, solution-treated |
| AMS | 5732 | Bar / forging, solution-treated and aged |
| AMS | 5853 | Welding wire (matching A286) |
| UNS | S66286 | Material designation |
| DIN | 1.4980 / X5NiCrTiMoVB25-15-2 | European designation |
| EN | 10204 3.1 / 3.2 | Mill / third-party-witness certification |
A286 Welding Rod vs Alternative Materials
Engineers compare A286 against three alternatives: A286 vs Inconel 718, A286 vs 17-4 PH, and A286 vs Waspaloy. See A286 equivalent grades.
How to Specify A286 Welding Rod
A complete a286 welding rod callout should include all relevant elements. Example callout:
A286 welding rod, AMS 5853, ⌀ 1.6 mm × 1000 mm length, sol-treated condition (not aged), pickled-and-passivated finish, 5 kg pack, EN 10204 3.1.
A286 Welding Rod, Frequently Asked Questions
What is A286 welding rod made of?
A286 (UNS S66286), same iron-nickel-chromium precipitation-hardening superalloy as the base metal. Welding rod is supplied in solution-treated (NOT aged) condition so it can be welded; post-weld aging done with full assembly.
Can A286 welding rod be used to weld dissimilar alloys?
Yes for some combinations, A286 filler used for A286-to-Inconel 718, A286-to-stainless 304/316, A286-to-17-4 PH joints. Verify weldability with welding-procedure qualification per ASME IX or AWS D1.6 before production. Not all dissimilar combinations produce sound welds.
What welding process is best for A286?
TIG (GTAW) is the dominant choice, best weld-pool control, lowest defect rate. Used for aerospace and high-quality applications. MIG (GMAW) used for higher deposition rate in industrial production. Plasma arc and electron-beam used for high-precision aerospace welding.
Does A286 welding require pre-heat?
NOT for thicknesses ≤ 50 mm, A286 is welded at room temperature with argon shielding. Pre-heat 200-300 °C only for thick-section (> 50 mm) welding to manage thermal gradients and reduce hot-cracking risk.
What's the post-weld heat treatment for A286?
Solution-treat 1650 °F (899 °C) for 1 h per inch + oil-quench → Age 1325 °F (718 °C) for 16 hours + air-cool. This develops gamma-prime precipitates in the weld zone, restoring base-metal-equivalent properties (130 ksi tensile, 95 ksi yield).
Is A286 welding rod magnetic?
No. Magnetic permeability < 1.005 verified per ASTM A342. Critical when welding non-magnetic A286 components, base metal AND weld must remain non-magnetic for the assembly to maintain magnetic isolation.
What size A286 welding rod for 5 mm thick A286 sheet?
1.6 mm (1/16 inch) TIG rod, typical filler-to-base-metal-thickness ratio is 0.3-0.4. For 5 mm sheet: use 1.6 mm filler with 100-130 A welding current. For thinner 1-3 mm sheet: use 1.0-1.2 mm filler at 60-90 A.
What's the shelf life of A286 welding rod?
Indefinite when stored sealed in dry conditions (≤ 60 % humidity). After opening: use within 6 months. If welding rod surface develops oxide spots, repickle in HNO₃ + HF before use to restore clean surface.
Can A286 welding rod be supplied AWS-classified?
AWS A5.9 covers A286 welding rod under classification ER660 (UNS S66286). TorqBolt AMS 5853 / 5805 conforms to AWS A5.9 ER660 acceptance. Certificate per AWS A5.9 available on request.
Why TorqBolt for A286 Welding Rod
Three reasons aerospace and industrial OEMs place a286 welding rod orders with us:
- Vertically integrated supply, VIM-VAR melt sourcing from approved AMS-conforming mills, in-house drawing + thread rolling + vacuum heat-treatment.
- Aerospace AQMS, AS9100D-certified factory in Mumbai with published quality manual.
- Lead time discipline, 4-6 weeks for ASTM A453 grade 660 standard sizes, 8-12 weeks for custom-drawing aerospace parts.
30+ years in fastener manufacture; ISO 9001:2015 + AS9100D + PED 2014/68/EU + NORSOK M-650 QTR all current.
Recent A286 Welding Rod Order Patterns
Active welding rod orders cover AMS 5853 1.6 mm TIG straight rod for jet-engine combustor crack repair, 1.2 mm MIG coil wire for industrial gas-turbine combustor liner production, 2.4 mm thick TIG rod for nuclear pressure-vessel weld overlay, and 0.8-1.0 mm aerospace TIG rod for control-linkage and structural-bracket fabrication.
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