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Universal 347 is extensively used with the gas tungsten arc, gas metal arc and submerged arc processes. This alloy is suitable for welding stabilized steel grades 321, 347 and 348. Alloy 347 should be used when high service temperatures are encountered (above 700 degrees F). Alloy 347 is similar to type 321 but has a higher creep strength. Excellent for aircraft exhaust components.