Types of Protective Coating for Specific Metals

protective coating

Naturally, iron gets corroded when exposed to oxygen or water. And since most metals contain iron, they all experience corrosion when exposed to these elements. With the introduction of high temperature, microbes, and salt, the degradation process of metals is accelerated. This is the reason why industries that make use of equipment that are made up of metals make sure to address corrosion-related problems as soon as possible to avoid build-up of repair costs and further damages.

It’s a good thing that there are various types of protective coating intended for specific industries, for the construction, energy, mining, and transport industries. Some of the most common protective coating methods are:


High-performance polyurea/urethane coatings. Coating metals with urethane helps in fighting the damaging effects of corrosion. Having this chemical applied to pipes, especially in petrochemical and marine industries, is essential given that they are mostly exposed to seawater. In the mining industry, such chemical helps in protecting equipment and tools.

Polyurea’s insensitivity to moisture is greatly used in protecting metals. Usually, handlers treat the surface first and apply a primer to make the chemical stick to the surface of the metal.


High-pressure water blasting and sandblasting. To decrease asbestos and lead in industrial worksites, high-pressure water blasting is implemented. This method is used to remove dirt and other contaminants. There will always be surfaces that can’t be reached by simple blasting techniques. But with water blasting, they can be done with ease.

With sandblasting, uneven surfaces can be smoothed out. This can be done by applying sand onto surfaces at the highest speeds. Commonly, aluminium oxide, corn cob, glass, plastic, and walnut shells are used for this method. It helps in getting impurities out of a material.


Metal spraying. Also called thermal metal spraying, this method is used to protect metals by heating and melting specific materials, including ceramics, metals, plastics, etc, and have them sprayed to surfaces. Metal spraying is intended for protecting equipment, structures, and tools from oxidation.

However, urethane coatings, sandblasting or water blasting, and metal spraying only partially protect metals from corrosion.


When looking for a complete protection to ensure no rust, no clean-up and easy installation, the best option is undoubtedly the Unituff coatings range - formerly known as Seal’n’Peel. However, it should be paired with protective coating inspection. This is due to instances where factors are overlooked, resulting in defects or damages on metal surfaces. Inadequate preparation of the current environmental situation or the surface is one of the reasons why signs of corrosion appear. With these in mind, inspecting the protective coating applied is needed.


Learn more about our protective coatings at Unituffglobal.com.