The Weld Star Monel 400 NiCu7 TIG Wire is a nickel-copper alloy filler designed for TIG (GTAW) welding of Monel alloys 400 and 404. It provides excellent bead appearance and exceptional corrosion resistance in saline and other highly corrosive environments, making it ideal for demanding marine and offshore applications.
Widely used in heat exchangers, pipelines, desalination plants, chemical and petrochemical industries, energy engineering, and other heavy-duty fabrication projects, this wire is also suitable for weld overlay applications. Manufactured from virgin raw materials, it ensures consistent composition, reliable performance, and high-quality weld results.
Key Features
Nickel-Copper Alloy: Designed specifically for Monel welding and overlay applications.
Excellent Corrosion Resistance: Performs reliably in saline and highly corrosive environments.
High-Quality Bead Appearance: Produces smooth, professional weld finishes.
Strong Mechanical Performance: Tensile strength ≥450 MPa, yield strength ≥180 MPa, elongation ≥30%, impact strength ≥80 J.
Marine & Offshore Ready: Ideal for pipelines, heat exchangers, desalination plants, and offshore construction.
Consistent Quality: Produced from virgin raw materials by specialised steel mills for dependable performance.
Standards Compliance: EN ISO 18274 – Ni 4060 – NiCu30Mn3Ti | AWS A5.14 – ER NiCu-7.
Typical Chemical Composition (%): C: max 0.15 | Mn: 3.00–4.00 | Fe: 0.50–2.50 | P: max 0.020 | S: max 0.015 | Si: max 1.00 | Cu: 28–32 | Ni: 62–69 | Co: max 1.00 | Ti: 1.50–3.00 | Al: max 1.00 | Nb+Ta: max 0.50.
Mechanical Properties (Typical): Tensile Strength: ≥450 MPa | Yield Strength: ≥180 MPa | Elongation: ≥30% | Impact Strength: ≥80 J (Values may vary depending on welding parameters, base material, and shielding gas).
Shielding Gas: TIG – I1 (Argon) per EN ISO 14175.
Welding Positions: PA, PB, PC, PD, PE, PF, PG per EN ISO 6947.
Workshop-Friendly Packaging: Available in multiple TIG diameters (including 1.60mm, 2.40mm, and 3.20mm), supplied in 5kg packs with 1000mm rod length for professional workshop and site use.
Download Product Specification.
