Austenitic Stainless Steel Filler Metal For XM-19 (Nitronic 50) Stainless Steel
ER209 is a high-strength stainless steel filler metal specifically developed for welding XM-19 (Nitronic 50, UNS S20910) and other nitrogen-strengthened stainless steels. Compared with conventional stainless steel filler metals, ER209 offers higher strength and superior resistance to chloride-induced corrosion while maintaining excellent weldability. It is widely used in marine engineering, offshore equipment, chemical processing systems, pumps, valves, pressure-containing components, and cryogenic service applications.
Whether you require ER209 MIG wire, ER209 TIG rods, or customized packaging solutions, we provide reliable welding consumables for industrial fabrication and maintenance projects worldwide.
📧 Request a quote by emailing support@ronsteel.com with your required specification, diameter, and quantity.
ER209
ER209
| Standard | Classification |
|---|---|
| AWS A5.9 | ER209 |
| ASME SFA 5.9 | ER209 |
| EN ISO 14343-A | W 22 9 3 N L* |
| UNS | S20980 |
| C | Mn | Si | Cr | Ni | Mo | N | P | S |
| ≤0.05 | 4.0–7.0 | ≤0.9 | 20.5–24.0 | 9.5–12.0 | 1.5–3.0 | 0.10–0.30 | ≤0.03 | ≤0.03 |
Values shown are typical and may vary according to manufacturing specifications.
| Property | Typical Value |
| Tensile Strength | 700 - 1000 MPa |
| Yield Strength | ≥ 434 MPa |
| Elongation | ≥ 36% |
| Charpy V-Notch Impact Toughness | ~73 J @ -20°C |
Designed for XM-19 (Nitronic 50®) Welding
ER209 is one of the most widely used filler metals for welding XM-19 stainless steel (UNS S20910). Its alloy design helps maintain the strength and corrosion resistance required in critical service environments.
High Strength Without Heat Treatment
The weld deposit achieves excellent tensile and yield strength while retaining good ductility. This makes ER209 suitable for high-load structural and pressure-containing components.
Outstanding Corrosion Resistance
ER209 weld metal performs exceptionally well in chloride-containing environments, offering resistance to pitting corrosion, crevice corrosion, and general corrosion.
Excellent Toughness at Low Temperatures
The austenitic microstructure provides reliable impact properties, making ER209 suitable for cryogenic and low-temperature service applications.
Stable Welding Performance
ER209 delivers smooth wire feeding, stable arc characteristics, low spatter, and consistent bead appearance for both manual and automated welding operations.
ER209 welding wire is commonly used for welding:
Typical fabricated products include:
We supply ER209 welding consumables in multiple forms:
| Process | Diameter Range |
| TIG (GTAW) | 1.6 mm – 4.0 mm |
| MIG (GMAW) | 0.8 mm – 1.6 mm |
Custom diameters and packaging configurations are available upon request. Contact us for a custom packaging and quotation: support@ronsteel.com
| Property | ER308L | ER209 |
| Primary Application | 304 / 304L | XM-19 / Nitronic 50 |
| Yield Strength | Moderate | High |
| Corrosion Resistance | Good | Excellent |
| Wear Resistance | Standard | Superior |
| Seawater Service | Limited | Excellent |
| Galling Resistance | Moderate | Excellent |
For XM-19 welding applications, ER209 provides significantly better mechanical performance and corrosion resistance than ER308L.
Every batch of ER209 welding wire is manufactured under strict quality control procedures and undergoes comprehensive inspection before shipment.
Available documentation may include:
Which base metals are compatible with ER209?
Primarily 18Cr-8Ni stainless steels such as 304, 304L, 321, and 309.
Can ER209 be used for welding XM-19 stainless steel?
Yes. ER209 is one of the most commonly specified filler metals for XM-19 welding because it provides an excellent balance of strength, toughness, and corrosion resistance.
Can ER209 be used in food processing or chemical plants?
Yes, it resists intergranular corrosion and maintains hygienic standards in contact with food or mild chemicals.
Is ER209 available for MIG and TIG welding?
Yes. We supply ER209 as both MIG welding wire and TIG filler rods.
Why choose ER209 over ER308L?
ER209 includes stabilizing elements like titanium or niobium to prevent intergranular corrosion, offering better long-term weld performance.
Can ER209 be used for dissimilar welding between 304 and mild steel?
No. For dissimilar joints such as stainless to carbon steel, we recommend ER309L. ER209 is optimized for 18Cr-8Ni to 18Cr-8Ni joints.
Need reliable ER209 MIG wire or TIG rods for 18Cr-8Ni stainless steel welding projects?
Ronsco offer competitive pricing, fast global delivery, OEM support, and technical datasheets.
📧 Email: support@ronsteel.com
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