Tin Zinc

ASTEC 2000 Tin Zinc

Tin Zinc is a very unique, high performance corrosion protection coating that offers a number of special characteristics and properties. Designed to not only provide superior levels of corrosion protection, proving more than a match for Zinc Nickel, it can also help product design requirements involving electrical conductivity/grounding and bonding of components through soldering/welding.

The process is very common on high end fasteners and particularly those that make contact with aluminium or stainless components. Tin Zinc provides a special coating as it offers a two prong resistance to corrosion.

The Zinc metal provides a sacrificial layer that will corrode preferentially to the steel substrate, while the Tin alloy provides a barrier protection. This means the final coating can provide the best of the corrosion performance benefits of both electroplating and painting in one thin layer. AST are currently the only UK applicator of this process and one of very few in Europe.

Key Properties

Alkaline, non-cyanide solution

Tin content 70-90%

Low, uniform deposit thickness
from 5 microns

REACH compliant

Available in clear trivalent

Barrel application

Whisker free

Key Benefits

Excellent corrosion protection

Solderability & weldability

Electrical conductivity

Low melting point

Uniform coating deposit

Excellent ductility for post bending and crimping

No Nickel metal

Excellent resistance to sulphur enhanced, salt and acidic environments

Industry Applications






Renewable Energy



General Engineering



Other frequently requested processes

Zinc Flake

Zinc Flake

Zinc Flake is a high end sacrificial corrosion protection coating, however one which offers a number of significant characteristic that electroplating cannot

Zinc Nickel

Zinc Nickel

Zinc Nickel is the high end corrosion protection finish of the electroplated coatings. Designed as a highly functional coating to offer superior levels of corrosion resistance in increasingly demanding environments



Zinc electroplating has been around for a long time and became very popular as an early replacement for Cadmium and other toxic materials previously used for higher corrosion protection performance