Overview
Monel are basically nickel-copper alloys. The nickel element stabilizes the austenitic structure of the alloy. The copper element brings excellent room temperature corrosion resistance (especially in flowing seawater) to the alloy. Therefore, Monel alloys are often used in marine applications. At the same time, copper metal has good electromagnetic properties. Therefore Monel alloys are also used in electronic applications. In this article, we will introduce the different types of Monel alloys one by one.
Monel Types
Monel 400
Monel 400 is a corrosion-resistant alloy featuring high heat resistance, high ohmic resistance, and also good corrosion resistance to various non-oxidized halogens.
400
Si
C
Mn
Fe
Cu
Ni
Monel 401
Monel 401 is a Monel 400-like nickel-based alloy with very low Curie temperature, very low magnetic properties and good brazing properties. When it comes to processing method, the traditional technique for iron-based materials are also applicable to Monel 401, such as TIG and MIG techniques. Type Monel 401 are mainly used for valve stems, pump shafts, impellers, conveyor scrapers, oil well drill rings, elastic parts, valve mats, etc.
401
Si
C
Mn
Fe
Cu
Ni
Monel 404
Monel 404 is a corrosion-resistant alloy with excellent overall properties. The alloy exhibits excellent corrosion resistance in hydrofluoric acid and fluorine gas media; besides, it features good corrosion resistance to hot concentrated alkali liquor. Monel 404 is also resistant to corrosion by neutral solutions, water, sea water, the atmosphere, organic compounds, etc.
404
C
Fe
Cu
Ni
Monel R-405
Monel R-405 alloy (UNS N04405) is a machinable nickel alloy with the addition of sulphur in the Monel 400 composition to enhance its machinability.
R-405
Si
C
Mn
Fe
Cu
Ni
Monel K-500
Monel K-500 features excellent mechanical properties such as high strength, corrosion resistance and non-magnetic properties, apart from sharing the same corrosion resistance of Monel 400. The alloy can be used as pump shaft material, suitable for working under harsh geological conditions of high sulfur and high wax oil layers.
Since Monel K-500 has no plastic-brittle transition temperature, it is very suitable for various cryogenic equipment. It is mainly used for pump shafts and valve stems, conveyor scrapers, oil well drill rings, elastic parts, valve pads and so on, and suitable for petroleum, chemical, shipbuilding, pharmaceutical, and electronic sectors.
K-500
Si
C
Mn
Fe
Al
Ti
Cu
Ni
Contact Us
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