What is Medium Phosphorous ENP?

Medium Phosphorus Electroless Nickel is an alloy of 6-9% Phosphorus in nickel and is specified wherever a uniform, hard, and moderately corrosion resistant coating is required. Its high hardness and bright deposit make it an ideal barrier coating for components needing wear resistance and a bright cosmetic appearance at a competitive price. The as-plated hardness of Mid-phosphorus electroless nickel is approximately 54-56 Rc and can be heat treated to 65-68 Rc for a more wear-resistant finish. This coating is also slightly magnetic.

This coating enjoys the same uniform deposit properties as our High-Phosphorus EN. Wherever the solution touches the part, the deposition will occur, with no edge build-up, misses, or burns normally associated with electroplating. Because the coating is deposited chemically rather than with electricity no expensive anodes, jigs, or special racks are required. Often times the actual thickness required can be reduced versus electroplating thereby saving metal costs.


  • Engineering

  • Railways

  • Oil and Gas

  • Construction

  • Electronics and several others.

  • Flanges

  • Connectors

  • Electrical Transmission


  • Even Coating: Electroless Nickel Plating is the uniformity of the coating. It provides an even coating on an entire part, even where there may be uneven surfaces and intricate geometries.

  • High Melting Point: Electroless Nickel has a high melting point of 890 degrees and can perform well in high-temperature oxidizing environments being able to withstand hot Steam, Air, and flue gases.

  • Anti Corrosive: Electroless Nickel is also suitable for saltwater and petroleum applications and can withstand corrosive factors.