Interpass temperature: Max. 150°C. Heat input: 0.5 – 2.5 kJ/mm. Heat treatment: Generally none (in special cases quench annealing at 1100 – 1150°C). Structure: Austenite with approx. 30% ferrite. Scaling temperature: Approx. 850°C (air). Corrosion resistance: Very good resistance to pitting and stress corrosion cracking in chloride containing environments. Characteristics AVESTA 2205 basic provides somewhat better impact properties and position welding properties than the 2205 AC/DC type electrodes. The electrode is designed for welding duplex steel of the 2205 type. For light to moderate thickness material, welding should be carried out as for ordinary austenitic stainless steel. However, the somewhat lower penetration and fluidity of the weld should be considered. Very high quench rates and excessive times at red heat or above should be avoided to prevent excessive ferrite or formation of intermetallic phases.