ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod

TRODE ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod

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As a manufacturer and supplier of quality welding material, Hajji Welding Supplies is a reliable company located in Tunisia, Tunis, which produces high-quality welding materials with the specialty of ERCUNI (70/30) spooled wire and bare filler metal rods. The Hajji Welding Supplies is determined to do a great job and hence serves a variety of industrial requirements with high quality products that guarantee high reliability, quality, and precision of welding. Their ERCUNI (70/30) services are also designed to perform better, on consistency and ease of use and they are also up to both the local and international standards. Central to its emphasis on quality, innovation and customer satisfaction, Hajji Welding Supplies has become a welding solution of choice to manufacturing, construction and repair industries.

AWS/ASME 5.7 TRODE ERCUNI (70/30) Bare Filler Metal Rod Supplier in Tunisia, AWS Class ERCUNI (70/30) Welding Bare Filler Metal Rod Exporter in Tunis, SFA A5.7 Trode 521 Filler Metal Rod Manufacturer in Sfax, Aluminum Bronze TRODE ERCUNI (70/30) MIG & TIG Filler Metal Supplier in Tunisia, Tunis

TRODE 521 Filler Metal Specification

Classification	AWS A5.7, ERCUNI (70/30)
Form	Spooled Wire and Bare Filler Metal Rod
Type Of Welding	Gas Metal-Arc and Gas Tungsten-Arc Welding
Standard Bare Rod Lengths Are Available	36″ (1000 mm) lengths. Other lengths available upon request.
AWS ERCUNI (70/30) Filler Metal Application & uses	Hardware tools Metallurgy Machinery Construction Shipbuilding Petroleum Chemical plant Power sector Gas Industry

What is ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod?

ERCUNI (70/30) spooled wire and bare filler metal rods consist of approximately 70% copper (Cu) and 30% nickel (Ni), providing excellent corrosion resistance and thermal stability. This alloy exhibits high tensile strength, typically around 450–550 MPa, with good elongation of 25–35%, ensuring strong and ductile welds. Its hardness ranges between 100–150 HB, making it suitable for demanding applications in chemical, marine, and industrial environments. ERCUNI (70/30) ensures superior weldability, minimal cracking, and reliable joint performance, making it an ideal choice for both precision and heavy-duty welding operations.

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AWS Class TRODE 521 Filler Metal Chemical Composition

Copper*	Balance
Aluminum	6.0- 8.50
Manganese	0.50 max
Silicon	0.10 max.
Others	0.50 max

TRODE ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod Mechanical Properties

Tensile Strength ksi	68 (469 MPa)
Yield Strength ksi	28 (193 MPa)
Elongation % in 2″ (51 mm)	47
Reduction of Area % BHN (3000kg.)	53
1/4″ (6.4 mm) deposit	125

TRODE 521 Welding Spooled Wire, Bronze Alloys Industrial TRODE ERCUNI (70/30) MIG / TIG Filler Metal Manufacturer in Sousse, AWS ERCUNI (70/30) MIG & TIG Filler Metal Rod & Wire Dealer in Tunis, Alum Bronze (70/30) Spooled Filler Wire Supplier in Bizerte, ERCUNI (70/30) (TRODE 521) Bare Filler Metal Rod, Bronze Alloys TRODE ERCUNI (70/30) TIG Filler Metal Exporter in Tunisia

Leading Industrial Supplier of ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod For Welding Solutions in Tunis

At Hajji Welding Supplies, we take pride in being one of Tunis’s trusted suppliers of high-quality welding consumables. Our expertise lies in ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod, engineered for precision, durability, and resistance to corrosion. With a strong commitment to quality and customer satisfaction, we provide welding solutions that support industries across construction, energy, shipbuilding, and manufacturing.

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AWS/ASME 5.7 TRODE ERCUNI (70/30) TIG Filler Rods Exporter in Tunis, TRODE ERCUNI (70/30) Spooled Welding Wire Stockist in Sfax, TRODE 521 Tungsten Inert Gas (TIG) Welding, TRODE ERCUNI (70/30) Metal Inert Gas (MIG) Welding Exporter in Tunis, TRODE ERCUNI (70/30) Spooled Wire & Bare Filler Metal Rod Exporters in Tunisia, Tunis

Types of ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod

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ERCUNI (70/30) Spooled Wire and Bare Filler Metal Rod Uses

ERCUNI (70/30) spooled wire and bare filler metal rods are extensively applied in the industries that demand the use of corrosion-resistant and long-term welding solutions. Their nickel content is great making them to be useful in the process of joining copper-nickel alloys in chemical plants, marine construction, desalination systems, and heat exchangers. They also find application in shipbuilding, offshore platforms and pipelines that are in contact with seawater or harsh environment of chemicals. Also, ERCUNI (70/30) can be used in repair welding, maintenance of industrial equipment, and tanks and pressure vessel manufacture. It has a good weldability, strength, and ability to resist erosion and stress corrosion crack, and therefore makes it a good choice in areas where critical applications are required.

Industry We Serve

The Hajji Industries Server is built to deliver reliability, speed, and scalability for mission-critical operations. Designed for modern industrial environments, it ensures seamless performance in manufacturing, engineering, energy, and automation sectors.