What is hot dip galvanized coating?

Formation of the hot dip galvanized coating occurs from the reaction of ferrous metal and molten zinc. The ferrous metal needs to have a clean, unoxidised surface for the molten zinc to react with it.

What materials can be hot dip galvanized?

The galvanized coating on the thread of the stud or bolt will provide corrosion protection for the internal thread of the nut. Most ferrous materials are suitable to be hot dip galvanized, including sound stress-free castings. Non-ferrous materials such as brass, aluminium and copper are not suited to the hot dip galvanizing process.

How does steel composition affect hot dip galvanized coating?

Steel composition (particularly silicon and phosphorus content) can affect the characteristics of the hot dip galvanized coating. Sulphur-containing free-cutting steels (for example S1214) are normally unsuitable for hot dip galvanizing.

What is a hot dip galvanized fastener?

Due to their small relative size, threaded fasteners, nuts and washers are usually hot dip galvanized via the centrifuge process. Like other moving parts, each part needs to be galvanized separately. The HDG process develops a coating of a minimum average thickness of 50μm on threads, as defined in ISO 10684.

What factors should I consider when designing for hot dip galvanizing?

The key factors to consider when designing for hot dip galvanizing are the design’s impact on: Aesthetics This guide provides general information on basic design and detailing practice, including venting and draining, with an aim to ensure articles are being hot dip galvanized safely and the quality of the coating is maximised.

Is galvacoat a metal paint?

Thankfully, Galvacoat® is a galvanised steel [] Galvacoat® is a specially formulated galvanized steel paint, designed to adhere to non-ferrous metals such as zinc and provide a long-lasting and cost-effective alternative to other metal paints.