Ni 99 (ERNi-CI, AWS A5.15) is a nominally 99% Nickel wire. It is a Corrosion-Resistant Alloy used for welding cast irons to other cast irons parts as well as for joining cast irons to mild steels and stainless steels. It is also used for repair of castings. Nickel is expensive, therefore Ni 99 is a premium product. The wire will deposit welds that are machine-able which is an important consideration when casting is to be machined after welding. Repairs made with Ni 99 are often single pass welds with high admixture. Even with high admixture, the weld deposit will remain machine-able. It works best on castings with low or medium phosphorous contents.
Chemical composition
| Nickel Ni Min 99.0% | Iron Fe 0.2% | Copper Cu Max 0.2% | Manganese Mn 0.4% | Others – Max 0.5% |
Mechanical properties
| Tensile Strength Rm (MPa) |
Yield Strength Rp0.2 (MPa) |
Elongation A % |
| 276-448 (40-64 psi) | 262-414 (40-64 psi) | 3-6 |
Product forms
| Product | Diameter (mm) | Length (mm) |
| Wire for MIG/GMAW Welding | 0.8, 1.0, 1.2, 1.6, 2.0, 2.4, 2.5, 3.2 | — |
| Rods for TIG/GTAW Welding | 2.0, 2.5, 3.2, 4.0, 5.0 | 915 – 1000 |
| Wire for SAW Welding | 2.0, 2.4, 3.2, 4.0, 5.0 | — |
| Electrode Core Wire | 2.0, 2.5, 3.20, 3.25, 4.0, 5.0 | 250, 300, 350, 400, 450, 500 |
Applications
Binary Nickel-Iron (Ni-Fe) and Ni based complex welding alloys are supplied in welding rod and wires in standard length or length up to the consumers’ request. For normal service conditions, the chemical compositions are available in various Ni contents according to the most of American and European standards.