Molybdenum Based Coatings

Any application with a high temperature that requires lubrication might consider a Molybdenum based coating. Despite using the same base element there are a number of branded coatings that are all popular with different industries and have different applications. Here’s our guide.

What is Molybdenum Disulphide?

Molybdenum does not occur naturally as a free metal on Earth but is instead found in various oxidised states within minerals. Molybdenum Disulphide is a compound containing Molybdenum and Sulfur, which takes the form of a crystalline mineral which is silvery grey in appearance. Molybdenum Disulphide is used as a solid lubricant and anti-wear barrier coating in high pressure and high temperature applications. A number of different branded coating options have used Molybdenum Disulphide as their base which includes Everslik, Molykote and Moly-Mist.

Everslik 1201 is an Epoxy based barrier coating. It provides excellent chemical corrosion resistance and is able to withstand chemical substances including Sulphuric Acid, Nitric Acid, Trichloroethylene, Hydrochloric Acid as well as Metylene Chloride and Skydrol 500A. It is thermally cured which increases the coating's toughness and also promotes its inherent hydrophobic properties giving it excellent water resistance. These properties make it ideal for both Offshore and Subsea Oil & Gas applications and Everslik 1201 is commonly used on components such as Valves and Fittings, Ball Joints and Pump Casings.

Everslik 1301 is dry film lubricant that was formulated for high wear and high corrosion applications. It has a high level of chemical resistance to sources which include; Hydrochloric Acid, Sodium Hydroxide, Diethanolamine, Trichloroethylene, Ethyl Alcohol as well as Jet Fuels and Hydraulic Fluids. It has a higher level of wear resistance when compared to Everslik 1201 and is especially popular as a coating on Threaded Fasteners and Jack Screws. Everslik 1301 has gained wide acceptance in the Petrochemical Industry and is also used on components such as Actuator Stems and Shafts, Impellers and even Fabrications.

Molykote D-7409 is an anti-friction coating, the material itself is a heat curing fry film lubricant with a high load capacity. It is suitable for both high temperature and high wear applications and its primarily used as a form of lubrication where grease cannot be used. Molykote D-7409 provides a protective barrier from a range of sources including Oil, Brake Fluid,Detergents. It will protect against Acids but not Alkalis. Molykote is very popular within the automotive industry and applications include Piston Rings and Tappets within combustion engines, Brakes, Locks, Hinges and also Oil Pumps.

Moly-Mist is similar in nature to Molykote in that it is primarily used as a dry lubricant to lower friction and prevent galling, it also enhances corrosion resistance. It is often used within moving components within machines such as Gears, Dies, Taps, Chains, Pistons and Plungers. Moly-Mist is probably best suited as a direct replacement to grease and will not offer the same level of wear or corrosion protection as the other processes on this list.

Silchrome Plating offer a wide range of processes to suit your application and can point you in the direction as to which process is right for you. We are fully ISO 9001 and 14001 approved and carry out all processes from electro-plating to Phosphating at our production facility in Leeds, West Yorkshire.