Nickel Alloy Welding Wire ERNiCu-7 Nickel Tig Wire Welding Consumables Filler Metal
Nickel alloy wires offer excellent corrosion resistance, high temperature stability and strong mechanical properties, making them ideal for use in harsh environments such as chemical processing, power generation, aerospace and marine industries.
Nickel Alloy Welding Wire ERNiCu-7 Nickel Tig Wire Welding Consumables Filler Metal
Features & Applications
Alloy ERNiCu-7 has excellent corrosion resistance in fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives. At the same time, it is more corrosion resistant than copper-based alloys in seawater.
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Acid medium: ERNiCu-7 is corrosion-resistant in sulfuric acid with a concentration of less than 85%. ERNiCu-7 is one of the few important materials that can withstand hydrofluoric acid.
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Water corrosion: ERNiCu-7 alloy not only has excellent corrosion resistance under most water corrosion conditions, but also pitting corrosion, stress corrosion, etc. are rarely found, and the corrosion rate is less than 0.025mm/a.
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High-temperature corrosion: The maximum temperature of ERNiCu-7's continuous operation in the air is generally around 600°C. In high-temperature steam, the corrosion rate is less than 0.026mm/a. 4. Ammonia: Due to the high nickel content of ERNiCu-7 alloy, it can withstand corrosion under anhydrous ammonia and ammoniated conditions below 585°C.
Chemical Composition (WT%)
| ELEMENT | C | Mn | Fe | P | S | Si |
| AWS A5.14% | <0.15 | <4.0 | <2.5 | <0.02 | <0.015 | <1.25 |
| MT WIRE% | 0.03 | 3 | 2 | / | / | 0.3 |
| ELEMENT | Cu | Ni | Co | Al | Ti | Cr |
| AWS A5.14% | Rem | 62-69 | / | <1.25 | 1.5-3.0 | / |
| MT WIRE% | 28 | 64 | / | 0.03 | 2 | / |
| ELEMENT | Nb+Ta | Other | ||||
| AWS A5.14% | <0.5 | / | ||||
| MT WIRE% | <0.2 | / |
Mechanical Properties
| Tensile Strength | ≥480 MPa |
| Yield Strength | ≥180 MPa |
| Elongation | ≥30% |
| Impact Strength | ≥80 J |
Shielding Gases
EN ISO 14175 – TIG: I1 (Argon)
Welding Positions
EN ISO 6947 – PA, PB, PC, PD, PE, PF, PG
Standard Packaging
| TIG | 10 lb. tube / 60 lb. carton | ||||
| MIG | 30 lb. spool | ||||
| SUB-ARC | 60 lb. coil |
