PROWELD CAST IRON NI55 2.5MM 1KG PK

Premium Nickel-Iron Electrodes for High-Strength Cast Iron Welding & Repair

Proweld Ni55 electrodes are purpose-built graphite-coated nickel-iron rods engineered for high-strength arc welding of cast iron components. Supplied in a convenient 2.5mm diameter, 1kg pack, these electrodes are a go-to choice for workshops, fabricators, and maintenance teams needing reliable, professional-grade cast iron repairs.

Key Features

• Nickel-Iron (Ni-Fe) Composition – Formulated to AWS ENiFe-CI classification, delivering crack-resistant, high-strength welds on all standard grades of grey cast iron.
• Smooth, Low-Spatter Arc – Produces an exceptionally smooth arc and low spatter levels on both AC and DC power sources, making it easy to control even for less experienced welders.
• Machinable Weld Deposit – The weld deposit is machineable and produces an excellent colour match, so repaired sections blend seamlessly with the surrounding base metal and can be finished to a smooth surface.
• Versatile Application Range – Suitable for repair, build-up, and reclamation of all standard grades of grey cast iron, including engine blocks, pump housings, gearbox casings, machine bases, and other cast iron components.
• 2.5mm Diameter – Ideal for medium-section repairs, offering a good balance between deposition rate and control/precision.
• 1kg Pack Size – Practical quantity for workshop stock, small-to-medium repair jobs, or trade use without overcommitting to bulk packaging.

Typical Applications

• Repairing cracked or broken cast iron engine blocks and cylinder heads
• Rebuilding worn cast iron machine parts and housings
• Joining cast iron to mild steel
• General maintenance welding on grey cast iron equipment

Why Choose Proweld Ni55?

Proweld Ni55 electrodes are trusted by welders across automotive, industrial, and general engineering sectors for their consistent arc performance and clean, machinable finish. Whether you're repairing a cracked engine block or rebuilding a worn cast iron housing, this electrode delivers dependable results with minimal post-weld cleanup.

Product Specifications