Welding Wire suits sour gas pipeline applications.
September 14, 2011 -
Designed for welding in flat and horizontal positions, Metalloy® 71 SG features high deoxidizer levels capable of welding through mill scale. Optimized wetting characteristics ensure smooth weld beads with uniform tie-in and help minimize weld defects and associated rework. By generating low hydrogen weld deposit of 3.3 mL per 100 g of weldment, gas shielded metal-cored wire helps mitigate cracking. Metalloy® 71 SG comes in .045 in. diameter and provides tensile strength from 70-87 ksi.
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Original Press release
Hobart Brothers Co.
Hobart Square
Troy, OH, 45373-2900
USA
Hobart Brothers Develops Welding Wire for Sour Gas Pipeline Applications
TROY, Ohio. - Hobart Brothers announced that it has developed a gas-shielded metal-cored wire specifically to improve welding performance and quality on sour gas pipeline applications. Metalloy® 71 SG wire features high deoxidizer levels that are capable of welding through mill scale and still producing consistent quality welds. The wire also offers excellent wetting characteristics to ensure smooth weld beads with uniform tie-in and help minimize weld defects and their associated rework. Additionally, it generates a low hydrogen weld deposit - 3.3 ml per 100 g of weldment - to help mitigate cracking.
Metalloy 71 SG wire is designed for welding in flat and horizontal positions, and can be used in short circuit or pulse applications. It is also usable for welding on non-alloyed and fine grain steels, rail car and heavy equipment manufacturing applications and with robotic welding systems.
Hobart Brothers offers the Metalloy 71 SG wire in .045-inch diameters and recommends it for use with a shielding gas mixture of 75 to 95 percent argon and a balance of CO2. It provides a tensile strength ranging from 70 to 87 ksi and a yield strength ranging from 58 to 80 ksi. Specific values depend on the exact shielding gas balance used. It also provides excellent Charpy V-Notch values, ensuring good toughness at temperatures as low as -76 degrees Fahrenheit (-60 Celsius).
Metalloy 71 SG wire is available in both 10- and 33-pound vacuum-packed spools.
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