Tin-Zinc is a versatile alloy coating that combines the advantages of Tin and Zinc in a single process. It offers both excellent corrosion protection and good electrical conductivity, making it particularly suitable for applications where solderability, contact stability, and durability are critical.
The coating is characterized by uniform layer thickness and a durable surface, even on complex shaped components. It is ideal for fasteners, electrical contacts, and precision parts – wherever reliability, functionality, and long service life are paramount.
Grey Tin-Zinc plating is ideal for complex aerospace components, offering excellent conductivity and corrosion resistance.
To further increase the grip strength and corrosion protection of tin-zinc coatings, the layers can also be passivated or sealed.
Passivation is virtually neutral in appearance and primarily serves to improve grip. It makes the surface more resistant to finger prints, dirt, and light mechanical stress without altering the coating's fundamental properties.
The sealant is applied to the passivation layer or directly to the coating. It further enhances corrosion protection and improves surface grip. However, the sealant can slightly impair other properties such as solderability or electrical conductivity , which is why its use should be carefully considered.