Incoloy is a nickel-iron-chromium alloy that belongs to the 800 series of alloys. One such advantage is the ease of manufacture, which uses the same machinery and methods as stainless steel. While a basic form of Incoloy is widely used, further alloying with enhancing elements provides additional resistance to chemical and environmental corrosion, as well as physical degradation such as surface pitting and cracking.
Incoloy Material
Incoloy is a nickel, iron, and chromium alloy that also contains molybdenum, copper, and titanium. The alloy’s chemical composition is intended to provide exceptional resistance to a wide range of corrosive environments.
Difference Between Inconel and Incoloy
The main distinction between them is their composition. Chrome-nickel alloy Inconel typically contains more than 50% nickel, whereas Incoloy contains less than 50% nickel. Nickel-Iron-Chrome alloy is present in Inconel.
Characteristics of Incoloy 800H Welded Tubes
• Possibility of high temperatures
• The creep rupture strength is very high.
• Excellent resistance to chemicals containing sulfur.
• Commercial heaters Systems and components
• Petrochemical Manufacturing
• Heat-treating equipment includes pressure vessels and heat exchangers.
• Cracking of hydrocarbons
Applications Of Incoloy 800H Welded Tubes
• Valves, fittings, and other components subjected to corrosive attack by industrial furnaces operating at temperatures ranging from 1100-1800° F
• Heat-treating systems
• Power station super-heaters and re-heaters
• High-pressure vessels
• Heat exchangers
Heat-treating equipment such as baskets, trays, and fixtures make use of Alloy 800H Welded Tubes (also known as Incoloy N08800 Welded Pipes). These UNS N08810 Welded Tubes are used for heat exchangers and other nitric acid piping systems in the chemical and petrochemical processing industries, particularly where resistance to chloride stress-corrosion cracking is required. They are used for super-heater and re-heater tubing in power plants.
Alloys 800H Welded Tubes are used in corrosive environments and at high temperatures, such as heat treating machinery, chemical and petrochemical processing, nuclear power plants, and the paper pulp industry. Baskets, trays, and fixtures made of Incoloy 800H Welded Tubes are used in heat-treating facilities.
Because of its higher ferrous content and lower cost, Incoloy is the best material for elevated temperature but less critical applications. Its ability to be manufactured using the same equipment and processes as stainless steel is advantageous.
This alloy is also available in various grades, with an emphasis on resistance to aggressive corrosion, particularly in aqueous environments. While a basic form of Incoloy 800H Welded Tube is adequate for the majority of applications, further alloying with enhancing components improves resistance to chemical and environmental corrosion, as well as physical deterioration such as surface pitting and cracking.
