ER209 – wire and rod for Nitronic 50 (XM-19)
Manganese- and nitrogen-bearing austenitic filler metal (22Cr-11Ni-5Mn-2Mo-N), made to weld the high-strength stainless UNS S20910.
Product forms and equivalents
| Process | Classification |
|---|---|
| TIG rod (GTAW) | ER209 |
| Solid MIG/MAG wire (GMAW) | ER209 |
| Covered electrode (SMAW) | E209-15/-16 – AWS A5.4 |
| Designation | Value |
|---|---|
| AWS | ER209 |
| Specification | AWS A5.9/A5.9M / ASME SFA-5.9 |
| UNS | S20980 |
| Trade designation | 22-13-5 / XM-19 (designação de material) |
Chemical composition (%)
| Element | wt. % |
|---|---|
| C | ≤ 0.05 |
| Cr | 20.5 – 24.0 |
| Ni | 9.5 – 12.0 |
| Mo | 1.5 – 3.0 |
| Mn | 4.0 – 7.0 |
| N | 0.10 – 0.30 |
| V | 0.10 – 0.30 |
| Si | ≤ 0.90 |
| P | ≤ 0.03 |
| S | ≤ 0.03 |
| Cu | ≤ 0.75 |
Properties of the deposited metal
| Property | Value |
|---|---|
| Tensile strength of deposited metal | ≥ 690 MPa (AWS A5.4 minimum for E209, reference) |
| Elongation | ≥ 15 % (AWS A5.4 minimum for E209, reference) |
Materials welded with ER209
Why the composition differs from the base metal
The wire repeats the concept of the base metal (Mn and N in place of part of the Ni), but with ranges adjusted so that the nitrogen stays in the bead without causing porosity. The deposit thus keeps a mechanical strength close to that of the bar, which a 316L would not give.
Welding precautions
- No preheating; interpass up to 150 °C.
- Avoid gases with nitrogen or high CO2; use pure argon in TIG.
- Moderate heat input to preserve nitrogen and toughness.
Frequently asked questions
What is ER209 used for?
Manganese- and nitrogen-bearing austenitic filler metal (22Cr-11Ni-5Mn-2Mo-N), made to weld the high-strength stainless UNS S20910.
Why is the composition of ER209 different from the material it welds?
The wire repeats the concept of the base metal (Mn and N in place of part of the Ni), but with ranges adjusted so that the nitrogen stays in the bead without causing porosity. The deposit thus keeps a mechanical strength close to that of the bar, which a 316L would not give.
Which covered electrode corresponds to ER209?
E209-15/-16 – AWS A5.4.
What precautions apply when welding with ER209?
No preheating; interpass up to 150 °C. Avoid gases with nitrogen or high CO2; use pure argon in TIG. Moderate heat input to preserve nitrogen and toughness.
