Chemical Solutions

Tin Nickel Plating

Tin nickel plated deposits have unique decorative and functional properties. Metalline Corporation manufactures a unique tin-nickel-cobalt system called COLSTAR that provides the following benefits:

  • Attractive and unique dark nickel appearance
  • Excellent corrosion protection
  • High plating efficiency and covering power
  • Useful on jewelry – no “nickel itch”


The COLSTAR plating process is easy to operate and can be plated over bright or satin nickel. Here are some operational recommendations:

  • Digital rectifier recommended – operating voltage of 0.5V maximum
  • Sulfur-free nickel slab anodes are required
  • Anodes are not consumed and will last for years
  • Chemical make up – 4 proprietary components, nickel chloride & water
  •  The tin component will oxidize – no air agitation and tank cover recommended