Direct Gold plating on SUS without Ni under plating

Direct Gold plating on SUS

Stainless steel surface is very stable material. It is because the surface is covered with a strong oxide film. In the past, the process of to the oxide film was difficult. In addition, when you needed a gold plating on top of the stainless steel, you were required to apply to the nickel as the first under layer.
There is a possibility that nickel causes a metal allergy when it touches the skin. Mitsuya developed the direct gold-plating technology onto stainless steel to solve this issue of nickel allergy.
Direct gold plating technology of Mitsuya has the following features.

  • It is suitable for the field of medical care.
  • It will contribute to the cost reduction.
  • It will improve the heat resistance.

Functional property

  • Anti Nickel-Allergic
  • Good bonding & soldering
  • Low contact resistance

Industry employed

  • Electronics components (Sensors)

Availability details

factory Tokyo
mass production yes - yes -
process type B,R - H -
under plating - - - -
prototype yes - yes -
experimental trial yes - yes -
chemical stock
yes - yes -

process type: B(barrel) R(rack) M(mesh basket) H(reel to reel)

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