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Welding wire developed for sour gas pipelines
- September 19, 2011
- Product Release
- Consumables
Hobart Brothers has developed a gas-shielded, metal-cored wire designed to help improve welding performance and quality on sour gas pipeline applications. Metalloy® 71 SG wire features high deoxidizer levels that can produce consistent welds through mill scale.
According to the manufacturer, the wire offers excellent wetting characteristics to help ensure smooth weld beads with uniform tie-in and to help minimize weld defects and their associated rework. It generates a low-hydrogen weld deposit to help mitigate cracking.
The wire is designed for welding in flat and horizontal positions and can be used in short-circuit or pulse applications. It also is suitable for welding on nonalloyed and fine-grain steels, railcar and heavy equipment manufacturing applications, and with robotic welding systems.
With a diameter of 0.045 in., the wire is used 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 from 58 to 80 KSI. Specific values depend on the exact shielding gas balance used.
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