WELDABILITY OF STRESS CORROSION RESISTANT STAINLESS STEELS: 25Cr-5Ni-Cu-Mo STEEL.

The effects of welding on the corrosion and mechanical properties of a duplex stainless steel containing 25%Cr-5%Ni-Cu-Mo were examined as part of a wider study on the weldability of recently developed stress corrosion resistant stainless steels. Susceptibility to intercrystalline attack was evaluated by Strauss and potentiostatic test methods for both thicknesses. Tensile, Charpy, and COD (cracking opening displacement) tests were carried out on the 13 mm material. Susceptibility to intercrystalline attack on welding was observed in both heat-affected zone and weld metal.