Characteristics, applications, grades and advantages of Monel400 and K-500 alloys
What is Monel? Characteristics, applications, grades, advantages of Monel alloy
Monel is the trade name for a group of nickel alloys consisting primarily of nickel and copper, with trace amounts of iron, manganese, carbon and silicon. Monel is stronger than pure nickel and is known for its corrosion resistance to a variety of corrosive environments. The material was first developed in 1901 by Robert Crooks Stanley. The name "Monel" is a trademark of "Specialty Metals Corporation". Known as a superalloy, Monel has a face-centered cubic lattice structure in its microstructure. Monel 400 is approved as a structural material by the ASME Boiler and Pressure Vessel Code.
Monel alloy properties
Monel alloy is a single-phase solid solution binary alloy with excellent mechanical properties at subzero temperatures. Monel alloy 400 has a specific gravity of 8.80, a melting temperature range of 1300–1350 °C, and a Poisson's ratio of 0.32. The table below provides the mechanical properties of Monel 400 material at room temperature.
Machinability: Machinability is very difficult due to work hardening of Monel. The techniques used for iron can be used to process Monel materials.
Welding: Gas shielded welding, gas shielded metal arc welding, metal arc welding and submerged arc welding are the preferred welding methods for Monel alloys.
Forging: Monel can be forged, but only under controlled procedures.
Hot Working: Typical hot working temperature range for Monel is 648-1176°C (1200-2150°F). Before starting thermal processing, the appropriate temperature must be determined.
