AWS: ECuNi WELDING ELECTRODES
Product data sheet / Overview:
The ECuNi electrode is designed for welding copper-nickel alloys, particularly those containing approximately 70% copper and 30% nickel, commonly referred to as 70/30 CuNi. This electrode is widely used in marine and desalination applications due to its excellent resistance to seawater corrosion and biofouling. It is also suitable for joining copper-nickel to steel and for overlaying on steel. It provides excellent resistance to oxidation and high-temperature corrosion, making it suitable for use in harsh environments such as chemical processing plants, power generation facilities, and aerospace applications.
Specifications : (Monel Alloys 187)
- Classification: AWS A5.6 ECuNi
- Type: Covered Electrode
- Diameter Range:2.5mm, 3.2mm, 4.0mm
Chemical Composition (%)
| Element | Composition (%) |
|---|---|
| Copper (Cu) | 62.0 - 69.0 |
| Nickel (Ni) | 29.0 - 33.0 |
| Iron (Fe) | 0.4 - 1.0 |
| Manganese (Mn) | 0.5 - 1.0 |
| Silicon (Si) | ≤ 0.5 |
| Carbon (C) | ≤ 0.05 |
| Sulfur (S) | ≤ 0.02 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 340 MPa (min) |
| Yield Strength | 130 MPa (min) |
| Elongation | 30% (min) |
| Hardness | Approx. 70-90 HB |
Applications
- Marine Industry: Construction and repair of ships, offshore structures, and seawater desalination plants.
- Desalination Plants: Components exposed to saline environments, such as evaporators and heat exchangers.
- Heat Exchangers and Condensers: Especially in power plants and chemical processing plants.
- Piping Systems: For the transportation of seawater and other corrosive fluids.
Storage and Handling
- Storage: Store in a dry, cool place to prevent moisture absorption. Ensure electrodes are kept in their original packaging until use.
- Handling: Handle with care to avoid damage to the electrode coating. Avoid exposure to water and oil.
Safety Precautions
- Personal Protective Equipment (PPE): Use appropriate PPE including welding helmets, gloves, aprons, and safety glasses.
- Ventilation: Ensure adequate ventilation or use fume extraction systems to avoid inhaling welding fumes.
Manufacturers
- ESAB
- Special Metals
- Lincoln
- Bohler/UTP
- Daiko
- Selectarc
Product Name
| Brand | Product Name |
|---|---|
| Special Metals | MONEL Welding Electrode 187 (90/10, 70/30) |
| BOHLER /UTP | UTP 387 |
| ESAB | OK 94.35 |
| Daiko | Daiko 187 |
| Lincoln | Tech-rod® 187 |
| Selectarc | SELECTARC CuNi30 |
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ECuNi Monel Alloys 187 Copper Nickel 90/10, 70/10 electrode (SMAW) supplier in Dubai, Abu Dhabi, Sharjah, Al Ain, Rak, Fujairah UAE, Oman, Saudi Arabia (KSA), Qatar, Kuwait & Bahrain