The DUROARC® 77 is an extra low-hydrogen, moisture resistant steel electrode designed to weld in all positions including vertical down. An excellent electrode for joining and repairing boiler plate, pipe steels, shipbuilding steels and cast steels. Also excellent for welding weathering steels such as “Corten”. The DUROARC® 77 is designed for welding of low-alloyed steels of medium tensile strength and where high x-ray qualities are required. SPECIFICATIONS Tensile Strength........................................610 MPa Yield Strength...........................................500 MPa Elongation................................................32 % Charpy V Notch @ -30°C.........................90J APPLICATION • Structural steel • Pressure vessels • Pipework • Earthmoving Equipment • Repair and maintenance WELDING PROCEDURES Remove all surface contaminants. Maintain a short arc gap and use a stringer or slight weave technique. Chip slag thoroughly between passes. AWS A 5.1 E7018-1 H8