Sherardizing – An Introduction

Corrosion costs, economically, environmentally and can ultimately lead to catastrophic failures. Corrosion protection is therefore essential in our industrial economy. Designers, specifiers and fabricators are constantly looking to use and develop the most effective and economic solutions, bearing in mind that every 90 seconds across the world, one tonne of steel turns to rust and of every two tonnes of steel produced, one tonne is to replace rust.

Zinc has been used for over a century to enhance the longevity and performance of steel due to its intrinsic resistance to corrosion. Almost half of the world’s annual consumption of zinc is for protecting steel from rust.

Sherardizing – so called after its British inventor Sherard Cowper Coles in 1900, is a method of producing a long term protective Zinc-Iron alloy coating on iron and steel and therefore giving high protection against corrosion and abrasion. Sherardizing also produces an ideal surface for other processes such as rubber to metal bonding and the application of organic coatings, oils, stains, lubricants and sealants and provides a cost effective, high performance alternative to hot dip galvanizing.