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Hajji Welding Supplies is a top manufacturer and distributor situated in Tunisia, Tunis that specializes in high-quality Monel welding wire. Our Monel wires are formulated for superior strength, corrosive resistance, and durability to be useful in the challenging conditions of various industries. They are utilized extensively in demanding conditions requiring welds that have to endure being in corrosive environments in marine, chemical, and oil & gas. Hajji Welding Supplies has implemented a state-of-the-art manufacturing facility process with a strict quality assurance procedure to ensure each product has consistent performance and reliability. We are committed to providing you with high-quality Monel welding wire that meets both compliance levels and exceeds the needs of the customer within Tunis and across the world.
Welding Wire diameter : 0.5 – 2.0mm.
MIG Welding Wire Diameter : commonly 0.6mm, 0.8mm, 1.0mm.
MIG Welding Wire SIZE RANGE : 0.60 mm to 1.60 mm (0.025” to 0.062”)
Flux Cored Wire diameter : 1.0 – 1.6mm.
TIG Welding Wire SIZE RANGE : 0.80 mm To 5.00 mm (0.030” To 0.196”)
Form : MIG / MAG Welding Wire, Tig Welding Wire, Flux-Cored Arc Welding Wire (FCAW)
Werkstoff Nr. 20838
MIL-E-22200/4 Type MIL-CuNI(70:30)
UNS W60715
ASME II, SFA-5.6, ECuNi
ISO ECu 7158
ASME IX, F-NO. 34
Europe ECu 7158
DIN 1733 S-CuNi30Mn
| Grade | C | Mn | Si | S | Cu | Fe | Ni |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.024 max | 28.00 – 34.00 | 2.50 max | 63.00 min |
| Monel K500 | 0.25 max | 1.5 max | 0.5 max | 0.010 max | 27.00 – 33.00 | 0.5 – 2 | 63.00 min |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Monel 400 | 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80,000 , MPa – 550 | Psi – 35,000 , MPa – 240 | 40 % |
| Monel K500 | 8.44 g/cm3 | 1350 °C (2460 °F) | Psi – 160000 , MPa – 1100 | Psi – 115000 , MPa – 790 | 20 % |
Hajji Weldingsupplies is a trusted manufacturer and supplier located in Tunis, Tunisia, specializing in high-performance welding consumables designed for corrosive and marine environments. They provide Monel® welding wires that are crafted to meet international standards, ensuring consistent weld quality even in the toughest conditions. With a strong commitment to metallurgical precision, product reliability, and customer satisfaction, Hajji Weldingsupplies caters to various industries, including marine, oil and gas, chemical processing, power generation, and offshore engineering. Their state-of-the-art manufacturing facilities and rigorous quality control systems guarantee dependable weld integrity and long-lasting performance.
Monel® welding wires are primarily made from nickel–copper based alloys, typically featuring around 60–70% nickel, with copper as the main alloying element, along with trace amounts of iron and manganese. This unique composition offers outstanding resistance to seawater corrosion, hydrofluoric acid, and alkaline environments. The weld metal showcases stable arc characteristics, a smooth bead appearance, and minimal risk of hot cracking. In terms of mechanical properties, these wires generally exhibit good tensile strength, high ductility, and excellent toughness, ensuring structural integrity even under thermal cycling and harsh corrosive conditions.
Monel® welding wires are extensively utilized for welding and repairing nickel–copper alloy components that are exposed to corrosive and marine environments. Common applications include seawater piping systems, marine hardware, offshore platforms, heat exchangers, valves, and pumps. They are also employed in chemical processing equipment, oil and gas installations, and desalination plants. Monel® welding wires are ideal for both fabrication and maintenance welding, as well as for joining dissimilar metals, providing reliable, crack-resistant welds that ensure a long service life in challenging operating conditions.
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