Duplex Stainless Steel 2205 Welding

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.

Duplex stainless steel 2205 welding.

4 type 2205 code plus two duplex stainless steel welding. 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. It should be easy to achieve full penetration. An article on spot welding duplex stainless steels was published 11 in issue 81 of practical welding letters for may 2010.

The notes below are shortened rules of thumb so please consult the full welding guides for details. Most duplex stainless steels have an over alloyed filler. For example 2205 uses 2209 and zeron 100 uses zeron 100x. For welding duplex stainless standard welding processes are used.

Preheating as a general rule preheating is not. Selection of a joint design should accommodate the following guidelines. Click on pwl 081 to read it. Alloyed duplex stainless steel weld fillers are suitable for welding the lower alloyed duplex stainless steel products.

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. Except that flux cored arc welding fcaw is not recommended especially for the super duplex grades.