Duplex Stainless Steel 2205 Welding

Here are links for welding 2205 duplex and for zeron 100 super duplex.

Duplex stainless steel 2205 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. 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. Most duplex stainless steels have an over alloyed filler. 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.

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. The notes below are shortened rules of thumb so please consult the full welding guides for details. For example 2205 uses 2209 and zeron 100 uses zeron 100x. Except that flux cored arc welding fcaw is not recommended especially for the super duplex grades.

Preheating as a general rule preheating is not. Alloyed duplex stainless steel weld fillers are suitable for welding the lower alloyed duplex stainless steel products. Selection of a joint design should accommodate the following guidelines. This research study attempts to create an optimized parametric window by employing taguchi algorithm for plasma arc welding paw of 2 mm thick 2205 duplex stainless steel.

An article on spot welding duplex stainless steels was published 11 in issue 81 of practical welding letters for may 2010. Click on pwl 081 to read it.