AWS A5.4 E347-16 | ASME SFA 5.4 E347-16
347 Electrodes are used to weld austenitics 18% Cr- 8% Ni stainless steels where maximum resistance to corrosion is required. 347 weld deposits contain columbium in the amount of 10 times the amount of carbon with a maximum of 1%, which prevents intergranular corrosion caused by carbide precipitation. 347 electrodes are commonly used for welding AISI 304, 321, and 347 stainless steels in textile and cellulose industries for joint-welding mechanical parts exposed to chemical attack. Other uses include pressure vessels such as those found in chemical plants and oil refineries, dye works, and for sealing basis application in acid, gas, water, and steam valves and fittings. 347 produces weld deposits with smooth bead appearance and easy slag removability.
CHEMICAL COMPOSITION, WEIGHT PERCENT
Typical Weld Metal
Niobium + Tantalum
Tensile Strength (psi)
Yield Strength (psi)
Elongation in 2"