Stainless steel

The origins of stainless steel date back to the 19th century, when work began in France on the addition of chromium to carbon steel to protect the material in acidic environments. As such, austenitic steel (with chromium and nickel additions) was patented by German engineers at the Krupp plant.
However, it was not until the early 20th century, when Harry Brearley was working on an alloy to improve the durability of rifle barrel tubes, that the nomenclature of stainless steel began to be used. The Englishman succeeded in this by adding chromium and nickel to the alloy in the right proportions. Practically in parallel to the Englishman's work, a method for the mass production of this steel was developed in France

We are currently dealing with it in almost every area of life. It is widely used in the food, chemical, petrochemical, automotive, construction and many other industries.

Right next to the precise choice of steel grade, of which there are plenty to choose from! (the most common are shown in the table below) for some components, the surface finish is equally important. A surface characterised by greater roughness (with deeper grooves) is more prone to corrosion. as chloride ions can more easily collect in its area and destroy the passive layer.
In contrast, on a polished surface, the same ions have this task made much more difficult. This is why it is so important to precisely define and agree on the favourable characteristics of the surface finish.