Designated as UNS N06985 or DIN 2.4619, Hastelloy G3 (also known as “Alloy G3”) is a nickel-chromium-iron alloy with additions of molybdenum and copper. It has good weldability and resistance to intergranular corrosion in the welded condition. The low carbon content helps prevent sensitization and consequent intergranular corrosion of weld-heat affected zones. Hastelloy G3 is generally used for flue gas scrubbers and for handling reducing acids such as phosphoric and sulfuric. 1. Composition Requirements The Chemical Composition of Hastelloy G3, % Ni Balance Cr 21.0-23.5 Fe 18.0-21.0 Co ≤5.0 Mo 6.0-8.0 W ≤1.50 Nb ≤0.5 C ≤0.015 Mn ≤1.0 Si ≤1.0 Cu 1.5-2.5 2. Mechanical Properties of Hastelloy G3 Tensile Strength, min. Yield Strength, min. Elongation, min. Hardness, min. Mpa ksi Mpa ksi % HRB 690 100 320 47 50 79 3. Physical Properties of Hastelloy G3 Density Melting Range Specific Heat Electrical Resistivity g/cm3 °C °F J/kg. k Btu/lb.°F µΩ·m 8.14 1260-1345 2300-2450 452 0.108 1180 4、Applications Components used in handling equipment that processes reducing acids such as phosphoric and sulfuric Components usedin the productions of sour gas and oil 5. Product Forms Bozhong Metals supplies Hastelloy G3 material in the form of sheets, strips, coils, wires, bars, forgings, pipes, fittings or flanges.