Platings > by Metal > Gold platings

Gold platings

sample of Gold platings

Gold is soft and easy to process. In addition, it is chemically stable and has excellent corrosion resistance, so it keeps its beautiful appearance for a long time. Therefore, it has been used as ornaments and coins since ancient times. Another feature is that it has high electrical and thermal conductivity.
Although it is such an excellent metal, it is famous for its low yield and high price. However, by using a technique called plating, it is possible to impart these excellent properties to the material in a small amount.
By plating gold, the material can have the following characteristics.
[Corrosion resistance, low contact resistance, high bonding properties, high conductivity, sealing properties, high frequency characteristics, high reflectivity, thermal conductivity, etc.]
It is used for the following by utilizing these characteristics obtained by gold plating.
[Connectors, sensor electrodes, semiconductor parts, optical parts, medical parts, etc.]
Since gold is expensive, the material cost is also high, but with Mitsuya, it is possible to reduce the cost by controlling the plating film thickness and partially performing gold plating. In addition, Mitsuya offers a large number of gold plating with new characteristics while taking advantage of the characteristics of gold. (Hard gold plating, high-purity gold plating, gold plating with increased reflectance, etc.)
Mitsuya prepares and provides 25 types of gold plating so that these characteristics can be easily exhibited. You can choose the most suitable gold plating that meets your product specifications. We can also propose the best solution.

Available platings

Pick up properties

We will introduce the property data about the gold platings as follows.
These help you to find the property which you need.

Purity of gold plating

Depending on the type of plating solution, gold purity can be obtained from 70 wt% to 99.9 wt%. You can choose between pure gold and alloys, taking into account properties such as hardness, optical reflection, bonding, and solder melting.

Hardness of gold plating

Hard gold plating is used for plating for connectors, contacts, and probe pins that require wear resistance. Hardness is increased by adding cobalt and nickel to gold. We can provide from soft gold plating to hard gold plating.

Metal allergy-free gold plating

As mentioned above, hard gold plating usually contains cobalt and nickel. However, cobalt and nickel are sources of metal allergies. We can provide hard gold plating that does not contain cobalt or nickel. We can also provide direct gold plating on SUS, which does not require nickel plating on the base.

Contact resistance of gold plating

We propose a gold plating with low contact resistance value.

Soldering of gold plating

We propose the type and thickness of gold plating suitable for solderability.

Reflectance of gold plating

We can introduce a high reflective gold plating, which has a higher reflectance compared with the traditional bright gold plating. Highly reflective gold plating is used for reflectors and condensers.

Partial gold plating

We can propose ideas for achieving high performance and cost reduction.

Sealing treatment

If the gold plating is thin, pinholes may occur, which may corrode the base plating and materials. Corrosion resistance is improved by sealing the holes. We can process water-soluble, non-aqueous, etc. according to your wishes.

High-temperature solder

We can provide the gold-tin alloy plating as the high reliability at high temperatures and the lead-free material for step soldering. Mitsuya's gold-tin alloy plating has the advantages of uniform composition and uniform thickness. It can also show the melt characteristics of alloy plating. Our gold-tin alloy plating has advantages of the uniform composition and the uniform thickness. We can also show the melting characteristics of this alloy plating.

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