Alloy 2304 can be successfully welded by the following processes :
TIG, manual and automatic
PLASMA, MIG, SMAW, SAW, FCAW
The duplex microstructure renders the alloy less sensitive to hot cracking.
The welding parameters must be optimized to obtain a controlled ferrite level (20-70%). Typical recommended heat inputs are 10-25 KJ/cm with a 150°C (302°F) max interpass temperature. These conditions must be optimized taking into account the thickness of the products and welding equipment (consult if necessary). We do not recommend pre- or post-welding heat treatments. Only complete solution annealing heat treatment may be considered.
