DIPTI METAL INDUSTRIES
DIPTIINOX® ERCuNi TIG Rod (AWS A5.7): Premier ERCuNi Manufacturer, ERCuNi Exporter, and Bulk ERCuNi Supplier for Copper-Nickel Alloys
Dipti Metal Industries is a Leading ERCuNi TIG Rod Manufacturer and Copper-Nickel Welding Wire ERCuNi Exporter in Mumbai, India, specializing in high-performance AWS A5.7 ERCuNi GTAW filler metal under the DIPTIINOX® brand. This filler metal is critical for welding 70/30 (C71500) and 90/10 (C70600) Copper-Nickel alloys—materials essential for resistance to biofouling and corrosion in seawater applications. As a trusted Nickel Alloy TIG Rod ERCuNi Supplier, we guarantee full conformance to AWS A5.7 and supply all standard diameters for Gas Tungsten Arc Welding (GTAW) and Gas Metal Arc Welding (GMAW). Our ERCuNi rods are widely used in marine fabrication, heat exchangers, and desalination plants, providing superior weld integrity for the most demanding environments.
DIPTIINOX® ERCuNi: The Essential Filler for Copper-Nickel Alloys in Marine Service
The AWS A5.7 ERCuNi TIG Rod is a Copper-Nickel alloy filler metal designed for the superior integrity of welds in materials that require high resistance to corrosion from salt, brackish water, and high velocity service. It contains a minimum of 29.0% Nickel (plus Cobalt) and a balance of Copper, making it the preferred choice for joining Cu-Ni alloys such as C70600 (90/10) and C71500 (70/30). Dipti Metal Industries ensures every ERCuNi GTAW Rod is precision-drawn and chemically balanced to deliver stable arc characteristics and high joint strength. We are a Nickel Alloy TIG Rod Exporter committed to providing certified filler metals for critical naval and offshore applications globally.
Key Features, Benefits, and Conformances of ERCuNi TIG Rods
Key Features & Service Performance
- Base Metal Match: Specifically for welding of 70/30, 80/20 and 90/10 copper-nickel alloys (Cupro-Nickel).
- Corrosion Control: Provides exceptional resistance to seawater erosion and corrosion, crucial for piping and heat exchangers.
- Dissimilar Welding: Used for joining Copper-Nickel alloys to Nickel 200 or nickel-copper alloys (Monel®).
- Overlay Applications: Can be used for MIG overlay on steel after a first layer with Nickel 208 (ERNi-1).
- Process Versatility: Suitable for both GTAW (TIG) and GMAW (MIG) processes (refer to parameters).
International Conformances and Quality
- Superior Surface Finish: Precision cleaning ensures low resistance and superior arc stability, minimizing porosity.
- Controlled Lengths: Supplied in standard cut-lengths (e.g., 1000mm) and precision spools for automated systems.
AWS A5.7 ERCuNi - Chemical Composition and Mechanical Properties
Chemical Composition - As required per AWS 5.7 (%)
| Ni+Co | Mn | Fe | Si | Cu+Ag | Ti | Pb | OET | P |
|---|---|---|---|---|---|---|---|---|
| 29.0–32.0 | 1.0 max | 0.40–0.75 | 0.25 max | Bal | 0.20–0.50 | 0.02 max | 0.50 max | 0.02 max |
Mechanical Properties - As required by AWS 5.7 (As Welded)
| Tensile Strength MPa (ksi) | Yield Strength MPa (ksi) | Elongation % | |
|---|---|---|---|
| AWS Requirements | 345 (50) min | Not Specified | Not Specified |
| Typical Results - As welded | 360 (53) | 140 (21) | 32 |
Welding Parameters, Diameter Range, and Packaging Options
Our ERCuNi TIG Rod is available in standard cut lengths for GTAW and spools for GMAW, ensuring optimal feeding and consistent performance across all processes.
Typical Welding Parameters (GTAW & GMAW)
| Diameter (in) | Diameter (mm) | Process | Volt | Amps | Shielding Gas |
|---|---|---|---|---|---|
| .035 | 0.9 | GMAW | 26–29 | 150–190 | Spray Transfer 100% Argon |
| .045 | 1.2 | GMAW | 28–32 | 180–220 | Spray Transfer 100% Argon |
| 1/16 | 1.6 | GMAW | 29–33 | 200–250 | Spray Transfer 100% Argon |
| 1/16 | 1.6 | GTAW | 14–18 | 90–130 | 100% Argon |
| 3/32 | 2.4 | GTAW | 15–20 | 120–175 | 100% Argon |
| 1/8 | 3.2 | GTAW | 15–20 | 150–220 | 100% Argon |
Standard Diameters & Packaging
| TIG (GTAW) Packaging | MIG (GMAW) Packaging | ||
|---|---|---|---|
| Diameter (mm) | Rod Length/Container | Diameter (mm) | Spool Weight |
| 1.6 mm (1/16 in) | 5 Kg Tube / 40 lb Carton | 0.9 mm (.035 in) | 15 kg / 33 lb spool |
| 2.4 mm (3/32 in) | 5 Kg Tube / 40 lb Carton | 1.2 mm (.045 in) | 15 kg / 33 lb spool |
| 3.2 mm (1/8 in) | 5 Kg Tube / 40 lb Carton | 1.6 mm (1/16 in) | 15 kg / 33 lb spool |
Note: Bulk packaging (e.g., 200 Kg drums) is available for high-volume GMAW (MIG) applications. All TIG Rods are supplied in moisture-proof, durable containers for export.
Primary Applications for DIPTIINOX® ERCuNi TIG Rod
The high corrosion resistance and strength of the ERCuNi weld metal make it indispensable for industries operating in demanding saline or corrosive environments, including Cupro-Nickel fabrication:
- Marine & Naval Construction: Critical for saltwater piping systems, shipbuilding, and repair of 70/30 Cu-Ni components.
- Power & Desalination: Welding of heat exchanger tubing, tube sheets, and water intake structures in power plants and desalination facilities.
- Oil & Gas (Offshore): Used in risers, pumps, and subsea equipment requiring superior erosion resistance and biofouling control.
- Chemical Processing: Fabrication of vessels and piping handling corrosive chemical media.
- Dissimilar Joints: Joining Copper-Nickel alloys to Nickel 200 or carbon steel (with a buffer layer).
Get a Quote Today for Your ERCuNi TIG Rod Requirements!
Are you searching to buy ERCuNi TIG Rod that is dependable, high-quality, and AWS A5.7 certified for your marine, naval, or desalination projects? Contact Dipti Metal Industries, your expert biggest manufacturer and ERCuNi TIG Rod Manufacturer, Nickel Alloy GTAW Filler Metal Supplier in Mumbai, India, TIG Rod Stockiest, Welding Wire Dealer, and Copper-Nickel Welding Wire Exporter, today to discuss your specific requirements or to request a personalized, custom quote. Our team is dedicated to providing you with the most effective, safest, and most reliable DIPTIINOX® ERCuNi TIG Rod solutions.
Price guidance (non-binding): USD 15.00–150.00 per kg depending on grade, diameter, packaging (Spool/Tube), quantity, and delivery terms. Final prices are quotation-based.
ERCuNi TIG Rod — Frequently Asked Questions
ERCuNi TIG Rod is specifically designed for welding Copper-Nickel alloys, most notably the 90/10 (C70600) and 70/30 (C71500) grades. It is a critical filler metal for marine, naval, and seawater service applications.
Yes, a key application for ERCuNi is the joining of Copper-Nickel alloys to Nickel 200 or other nickel-copper (Monel-type) alloys, providing high joint integrity and corrosion resistance in challenging environments.
The DIPTIINOX® ERCuNi TIG Rod conforms strictly to AWS A5.7 and ASME SFA 5.7 specifications for the ERCuNi classification. The material is also referenced by the UNS C71581 designation.
Yes. While most commonly requested as a TIG (GTAW) rod, ERCuNi is also manufactured as a MIG (GMAW) wire on spools, with bulk packaging options available for automated welding of thin-walled Copper-Nickel sections.
Contact Dipti Metal Industries, Your ERCuNi TIG Rod Manufacturer, TIG Rod ERCuNi Exporter, TIG Rod ERCuNi Supplier in Mumbai, TIG Rod ERCuNi in India
Global export expertise: Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI. We are a worldwide exporter of quality ERCuNi TIG Rod ERCuNi for export from Mumbai, India.