Is Inconel 600 Magnetic?
Overview
Inconel 600 is a nickel-chromium alloy that has good oxidation resistance at elevated temperatures and good resistance in carburizing and chloride-containing environments.
Inconel 600 is a nickel-chromium alloy designed for use in the high temperature range from cryogenic to 2000 degrees Fahrenheit (1093 degrees Celsius). The high nickel content of the alloy allows it to maintain considerable corrosion resistance under reducing conditions and enables it to resist attack by a wide range of organic and inorganic compounds. The nickel content gives it excellent resistance to chloride ion stress corrosion cracking and also excellent resistance to alkaline solutions.
Its chromium content gives the alloy resistance to sulfur compounds and a wide range of oxidizing environments. The chromium content of this alloy makes it superior to commercial pure nickel in oxidizing conditions. In strongly oxidizing solutions such as hot concentrated nitric acid, 600 has poor corrosion resistance. Alloy 600 is relatively unattacked by most neutral and alkaline salt solutions and can be used in certain corrosive environments. The alloy resists steam and mixtures of steam, air, and carbon dioxide.
Alloy 600 is non-magnetic and has excellent mechanical properties, combining high strength with good machinability and is easily welded. Inconel 600 has the cold forming properties usually associated with chromium-nickel stainless steels.
Typical corrosive applications include titanium dioxide production (chloride route), perchloroethylene synthesis, vinyl chloride monomer (VCM), and magnesium chloride. Alloy 600 is used in chemical and food processing, heat treatment, phenol condensers, soap manufacturing, vegetable and fatty acid containers, etc.
Features
Resistant to a wide range of corrosive media. The chromium content provides better corrosion resistance than alloys 200 and 201 under oxidizing conditions, while the high nickel content provides good corrosion resistance under reducing conditions. Almost unaffected by chloride ion stress corrosion cracking. Adequate corrosion resistance to organic acids such as acetic, formic, and stearic acids. Excellent resistance to high purity water used in primary and secondary circuits of pressurized nuclear reactors. Almost no corrosion occurs in dry gases such as chlorine or hydrogen chloride at room and elevated temperatures. In these media, this alloy has proven to be one of the most resistant of the common alloys at temperatures up to 550C. At high temperatures, annealed and solution annealed alloys show good resistance to scaling and have high strength. The alloy also resists ammonia-containing atmospheres as well as nitrogen and carburizing gases. Selective oxidation of the alloy may occur under alternating oxidizing and reducing conditions.
Applications
Thermocouple sheaths. Ethylene dichloride (EDC) cracking tubes. Conversion of uranium dioxide to uranium tetrafluoride when in contact with hydrofluoric acid. Production of caustic soda, especially in the presence of sulfur compounds. Reaction vessels and heat exchanger tubing for the production of vinyl chloride. Process equipment for the production of chlorinated and fluorinated hydrocarbons. In nuclear reactors, it is used to manufacture components such as control rod inlet stubs, reactor vessel assemblies and seals, steam dryers and d separators in boiling water reactors. In pressurized water reactors, it is used to manufacture control rod guide tubes and steam generator baffles. Furnace seals, fans and fixtures. Roller hearths and radiant tubes, especially in the carbonitriding process.
