How to clean rust stains from "stainless" steel – a problem solved

December 12, 2017 2 Comments

Benz Softwash Bio Cleanze DDAC biocide & Benz Softwash Lightning Cleanze SH sodium hypochlorite biocide

Stainless steel comes in several grades of purity. All grades contain some iron, among other metals such as chromium, manganese, silicon, carbon and often nickel and molybdenum.

It is the inclusion of iron that gives rise to rust staining of the "stainless" steel if the protective layer of chromium oxide is damaged or there was not enough chromium included in the alloy.

There are over 150 grades of stainless steel and some are more prone to corrosion than others. Generally, the higher the chromium content, the less likely the steel will rust. However, given enough time, some rust will appear on most stainless steel

What makes stainless steel "stainless"?

When the chromium in stainless steel is exposed to oxygen in the atmosphere it forms a thin and invisible layer of "chromium oxide". It is this invisible layer, which covers the entire surface, gives stainless steel its ability to resist stains and rust. And if this layer should be damaged, rust will form on the surface at the location of that damage.


Using Benz Oxy Cleanze rust removal gel to clean rust stains from stainless steel

The before and after photos (below) are of stainless steel handrails and bollards that were stained with rust.

This may have been caused by contamination from mild steel during fabrication, contamination during use, or by selecting a low grade of stainless steel.

We applied Benz Oxy Cleanze and left it to work for 2 hours at 4 ℃. We lightly rubbed the surface with a rag and then rinsed.

Quick tip: Sometimes, to be fully effective, Oxy Cleanze may require leaving longer and may require a second application.

Remove rust oxidation from stainless steel with Benz OxyCleanze rust & oxidation removal gel Remove rust oxidation from stainless steel with Benz OxyCleanze rust & oxidation remover gel

 

 

Remove rust oxidation from stainless steel with OxyCleanze rust & oxidation remover gel Remove rust oxidation from stainless steel with OxyCleanze rust & oxidation removal gel

We hope this information is helpful.

Cheers,

Ben, Leo & Fiona

 

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Benz Softwash Bio Cleanze DDAC biocide & Benz Softwash Lightning Cleanze SH sodium hypochlorite biocide





2 Responses

Leo
Leo

February 22, 2018

Hi Jack – Benz Oxy Cleanze is designed to remove rust stains to this would be my first choice. As always treat a small area first, with your customer’s permission, and ensure your customer is happy with the results before treating the whole area. https://www.benzsoftwash.com/products/oxycleanze-rust-oxidation-remover-gel

Jack Charters
Jack Charters

February 20, 2018

The client has asked me if there’s any product what would take rust out of concrete they have put down reinforced steel down on concrete and it is stained the concrete what do you recommend

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