DAIKOWT 686

The consumables in this subfamily are specifically designed to match the chemical and mechanical properties of alloy 686. The high nickel (Ni) and molybdenum (Mo) content provides excellent resistance under reducing conditions. The substantial chromium (Cr) input ensures resistance to oxidizing environments. Both molybdenum (Mo) and tungsten (W) enhance resistance to localized corrosion, such as pitting. The low carbon (C) content helps minimize grain boundary precipitation, ensuring protection from corrosion in welding heat-affected zones. This alloy is characterized by a tough weld metal, free of Nb, ideal for dissimilar joints in superaustenitic and super duplex stainless steels, or combinations with Ni-based alloys. Additionally, it offers outstanding resistance in applications susceptible to sulfuric or hydrochloric acids, combinations thereof, and to interstitial or pitting corrosion in concentrated and high-temperature acidic chloride solutions. It is primarily used in the chemical and petrochemical sectors, for pollution control, oil and gas extraction and refining, and in marine environments. Its effectiveness extends to dissimilar metal welds, ensuring robust protection against detrimental attacks on the weld metal, especially when joining molybdenum-bearing (Mo) alloys or alloy-clad steels.