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Like it or not rust is a natural process bought about due to the oxygen in the atmosphere coming into contact with water on the surface of metal and causing a reaction. Whilst we can't be without oxygen or water (in quite the literal sense!) we can help prevent and minimise the reaction of metal objects to them. To help protect metal components of all types Cromwell stock a large range of preventative and rust treatments to help, eradicate rust and avoid long term damage to metal surfaces, components and tooling. To find out more see our Working With Metalworking Fluids Guide.

Featuring name brands like Ambersil, Castrol, Fuchs and Rocol among others, you'll be sure to find the right products for your metal protection needs.

What are rust treatments?

In simple terms, rust treatments help inhibit rust by forming a protective barrier on the metals surface. Many rust treatments feature corrosion inhibitors which work by reducing the rate of corrosion to metals exposed to moisture and oxygen. They can be used to protect metal surfaces from brand new, or retreat surfaces periodically for prolonged protection.

Rust treatments come in many forms, with varying degrees of protection and application methods.

Why rust treatments?

Protecting metal surfaces from corrosion is paramount for prolonging their lifespan. In the case of machinery corroded components can cause mechanical failure, which can also cause a health hazard. In the case of worksurfaces and objects like metal fencing etc. a rust treatment can keep them from not only looking unsightly but clean and strong (as rust tends to leave residue and make metals brittle).

Types of rust treatments

There are different types of rust treatments suitable for different types of rust. Yes, you read that right! Not all rust is created equal and neither are rust treatments. Rust is typically seen in three different stages. Surface rust is pretty self-explanatory and is mostly superficial, but it can spread. Scale rust marks the first stages of metal degradation as this is where the rust starts to etch or pit in some metals. Penetrative rust is a real problem once rust gets to this stage it's time to think about replacing whatever is rusting, as the integrity of the metal is highly compromised by this point.

• Corrosion inhibitors - Corrosion inhibitor work by forming a protective barrier, helping to resist the onset of rust and slowing down the process in surfaces with light surface rust.

• Rust removers - Rust removers work by stripping away rust from the metal's surface, effectively cleaning it. The surface will need priming and treating afterwards to prevent the rust from returning.

• Rust converters - These treatments convert rust into a black substance that prevents further oxidation and can be painted over.

Considerations when choosing a rust treatment

• The level of rust you are dealing with - Lightly rusted surfaces and parts can usually be cleaned and treated effectively. Whereas heavily rusted metals will require a lot of TLC and extensive cleaning and treating. Even with all this effort if the metal has rusted to the point it no longer can hold it's structural integrity, then a replacement item is the best call.

• The application method - In the cases of hard-to-reach parts applying rust treatments with a brush or applicator might not be possible. Spray cans can help reach into areas that other methods might miss as well as providing even coverage.