Alloy C-22 – Hastelloy Weldability

Although ductile enough to be formed by cold working, middle of the road annealing might be essential because of work hardening. In Alloy C-22, forging should be performed within the scope of 1750-2050° F took after by fast cooling. Annealing can be performed at a temperature scope within 2020-2150° F took after by a fast quench. Cooling at a quickened rate stays away from the formation of detrimental stages which form between 1400-1800° F. Welding should be possible done by gas tungsten-arc, gas metal-arc and shielded metal-arc processes. Promptly welded by standard techniques, with the exception of that submerged arc welding should be kept away from because of the high heat input and slow cooling of that technique. Clean the weld areas altogether before welding and utilize coordinating filler metal ER NiCrMo-10 and E NiCrMo-10 for GTAW and SMAC techniques respectively. Alloy C-22 might be utilized as a part of the welded structure for most applications as it resists grain limit precipitates during welding.

Applications

• Acetic Acid/Acetic Anhydride
• Acid Etching
• Cellophane Manufacturing
• Chlorination Systems
• Complex Acid Mixtures
• Electro-Galvanizing Rolls
• Expansion Bellows
• Flue Gas Scrubber Systems
• Geothermal Wells
• HF Furnace Scrubbers
• Incineration Scrubber Systems
• Nuclear Fuel Reprocessing
• Pesticide Production
• Phosphoric Acid Production
• Pickling Systems
• Plate Heat Exchangers
• Selective Leaching Systems
• SO2 Cooling Towers
• Sulfonation Systems
• Tubular Heat Exchangers
• Weld Overlay-Valves