ERNi-1 – wire and rod for nickel 200 and 201
Commercially pure nickel filler metal with titanium, for nickel 200/201 in caustic soda, food and electronics equipment, and for overlaying carbon steel.
Product forms and equivalents
| Process | Classification |
|---|---|
| TIG rod (GTAW) | ERNi-1 |
| Solid MIG/MAG wire (GMAW) | ERNi-1 |
| Covered electrode (SMAW) | ENi-1 – AWS A5.11 |
| Submerged arc wire (SAW) | ERNi-1 + flux |
| Designation | Value |
|---|---|
| AWS | ERNi-1 |
| Specification | AWS A5.14/A5.14M / ASME SFA-5.14 |
| UNS | N02061 |
| Others | EN ISO 18274: S Ni 2061 (NiTi3); W.Nr. 2.4155 |
| Trade designation | Níquel 61 (designação genérica) |
Chemical composition (%)
| Element | wt. % |
|---|---|
| C | ≤ 0.15 |
| Ni | ≥ 93.0 |
| Ti | 2.0 – 3.5 |
| Al | ≤ 1.5 |
| Mn | ≤ 1.0 |
| Fe | ≤ 1.0 |
| Si | ≤ 0.75 |
| Cu | ≤ 0.25 |
| P | ≤ 0.03 |
| S | ≤ 0.015 |
Properties of the deposited metal
| Property | Value |
|---|---|
| Tensile strength of deposited metal | ≥ 410 MPa (AWS A5.11 minimum for ENi-1, reference) |
| Elongation | ≥ 20 % (AWS A5.11 minimum for ENi-1, reference) |
Materials welded with ERNi-1
Why the composition differs from the base metal
Nickel 200 has more than 99 % Ni, but the wire has only about 93–96 %, because it carries 2–3.5 % titanium and a little aluminum. These elements capture oxygen and nitrogen from the pool; without them, molten pure nickel produces a lot of porosity.
Welding precautions
- No preheating.
- Very rigorous cleaning: pure nickel is sensitive to sulfur and lead.
- The nickel alloy pool is viscous and penetrates little: use a wider bevel, a smaller root face and place the wire at the edge of the pool.
- TIG with pure argon or argon-helium; argon root purge. Rigorous cleaning: oil, paint and markers contaminate the nickel alloy with sulfur and lead.
Frequently asked questions
What is ERNi-1 used for?
Commercially pure nickel filler metal with titanium, for nickel 200/201 in caustic soda, food and electronics equipment, and for overlaying carbon steel.
Why is the composition of ERNi-1 different from the material it welds?
Nickel 200 has more than 99 % Ni, but the wire has only about 93–96 %, because it carries 2–3.5 % titanium and a little aluminum. These elements capture oxygen and nitrogen from the pool; without them, molten pure nickel produces a lot of porosity.
Which covered electrode corresponds to ERNi-1?
ENi-1 – AWS A5.11.
What precautions apply when welding with ERNi-1?
No preheating. Very rigorous cleaning: pure nickel is sensitive to sulfur and lead. The nickel alloy pool is viscous and penetrates little: use a wider bevel, a smaller root face and place the wire at the edge of the pool. TIG with pure argon or argon-helium; argon root purge. Rigorous cleaning: oil, paint and markers contaminate the nickel alloy with sulfur and lead.
