Creator of Composite Diamond Coating®

Surface Technology, Inc. is the creator and technical leader of CDC - Composite Diamond Coating®, an exceptionally engineered coating of electroless nickel with fine diamond. The synergy of these materials makes CDC an exceptionally hard and wear resistant coating. CDC conforms to even the most complex geometries and is an excellent replacement for chrome plating. STI makes CDC available via coating services from its production facility as well as chemical products sold directly, through a network of distributors, and by agreement with licensees worldwide.

AddPlate® and NiPlate™ 300


The 300 system is an economical low phosphorous electroless nickel process designed to deposit a uniform, nickel-phosphorous alloy onto a great variety of metals, alloys, and non-conductors.

The 300 system is available in two packaging options to best meet your needs. The NiPLATE option provides the greatest convenience to the user, while the ADDPLATE® option provides the greatest economy for shipping and use. Both options produce the same properties and quality.

  • The NiPLATE 300 option is supplied in three liquid concentrates: NiPLATE 300 A and 300 B are used for make-up, and NiPLATE 300 A and 300 C are used for replenishment.
  • The ADDPLATE® 300 option is supplied in two liquid concentrates: ADDPLATE® 300 M is used for bath make up with standard nickel sulfate and sodium hypophosphite commodities, and ADDPLATE® 300 R is used for replenishment of the bath with the same standard nickel sulfate and sodium hypophosphite commodities. 

Some advantages of the 300 system are:

  1. High as-plated hardness
  2. Corrosion resistance in caustic environments
  3. Lower electrical resistivity
  4. Solderability without the use of high acid fluxes
  5. Excellent stability and bath life
  6. Bath operation at lower temperatures

The 300 system electroless nickel processes meet or exceed MIL-C-26074D and AMS 2404C.

Typical Deposit Properties:

Phosphorous Content 1-4% by wt.
o as plated 700 VHN100
o heat treated @ 400°C for 1 hr. 1000 VHN100
Salt Spray (ASTM-B-117) 100 hrs.
Stress compressive depending 
on phosphorous level
Magnetic Properties magnetic
Deposition rate 0.6 - 0.8 mil per hour

Preferred Operating Conditions:

  Range Optimum
Solution Temperature 70°- 80 °C (158°-176°F) 77°C(167°F)
Solution pH 5.7 - 6.6 6.3
Bath Loading 0.3 - 0.8 ft2/gal 0.5 ft2/gal
Nickel Metal Concentration 0.65 - 0.85 oz/gal 0.8 oz/gal
H2PO2 Concentration 3.5 - 4.5 oz/gal 4.0 oz/gal
Agitation Mechanical or Filtered Air  

Consult a Surface Technology, Inc. Sales or Technical Service Representative for further information about this or any of our products and services.

A Leader
in the Metal Finishing Industry