Learn where ER347 niobium-stabilized stainless welding wire is used, including 321, 347, heat-exposed piping, and stabilized fabrication.
ER347 is a niobium-stabilized austenitic stainless filler commonly used for welding compatible stabilized stainless steels such as 347 and selected 321 applications.
Why Is ER347 Stabilized?
Niobium combines preferentially with carbon and helps reduce chromium-carbide-related sensitization under suitable thermal exposure.
Typical Applications
- Heat-exposed stainless piping
- Refinery components
- High-temperature process equipment
- Stabilized stainless tanks
- Exhaust-related components
- Selected 321 and 347 fabrication
Can ER347 Weld 321 Stainless?
ER347 is frequently used for 321 stainless because titanium recovery in weld metal can be difficult, while niobium provides stabilization.
Is It Suitable for Every High-Temperature Application?
No. Creep strength, oxidation, thermal cycling, and service code must be reviewed.
Dayang Welding supplies ER347 TIG and MIG wire for stabilized stainless fabrication.
