Duplex Stainless Steel 2205 Welding

The matching fillers have been reported to give acceptable results when joining duplex stainless steels to austenitic stainless steels or to carbon and alloy steels.

Duplex stainless steel 2205 welding. Preheating as a general rule preheating is not. Here are links for welding 2205 duplex and for zeron 100 super duplex. Alloyed duplex stainless steel weld fillers are suitable for welding the lower alloyed duplex stainless steel products. Click on pwl 081 to read it.

Except that flux cored arc welding fcaw is not recommended especially for the super duplex grades. The duplex family covers a broad range of corrosion resistance allowing the substitution of standard stainless grades from 304 with lean duplex ur 2202 904l with ur 2205 up to 6mo with ur 2507 super duplex. The notes below are shortened rules of thumb so please consult the full welding guides for details. Selection of a joint design should accommodate the following guidelines.

A suitable electrode diameter is 5 64 3 32 inch 2 2 4 mm depending on base metal thickness welding position and accessibility for root side grinding. For welding duplex stainless standard welding processes are used. 1 1 chemical compositions grade uns en c max cr ni mo n mn others pren min lean duplex ur 2202 s32202 1 4062 0 03 22 5 2 0 3. 4 type 2205 code plus two duplex stainless steel welding.

Most duplex stainless steels have an over alloyed filler. For example 2205 uses 2209 and zeron 100 uses zeron 100x.