Which filler metal classification is used for stabilized grades?

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Multiple Choice

Which filler metal classification is used for stabilized grades?

Explanation:
Stabilized grades are stainless steels that include a stabilizing element, like niobium, to prevent sensitization and carbide precipitation during welding. To weld these steels effectively, you use a filler metal that provides the same stabilization. The filler designed for stabilized grades contains niobium and is designated to match those steels, commonly known as ER347. The niobium in this filler binds carbon and forms niobium carbides, which keeps chromium carbides from forming at grain boundaries and preserves corrosion resistance in the welded region. Other fillers are intended for standard (unstabilized) grades or different service conditions, so they don’t offer the same stabilization benefits.

Stabilized grades are stainless steels that include a stabilizing element, like niobium, to prevent sensitization and carbide precipitation during welding. To weld these steels effectively, you use a filler metal that provides the same stabilization. The filler designed for stabilized grades contains niobium and is designated to match those steels, commonly known as ER347. The niobium in this filler binds carbon and forms niobium carbides, which keeps chromium carbides from forming at grain boundaries and preserves corrosion resistance in the welded region. Other fillers are intended for standard (unstabilized) grades or different service conditions, so they don’t offer the same stabilization benefits.

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