Chrome-nickel steels
Resistant mainly to electrochemical corrosion in the environment of inorganic and organic acids, nitrogen compounds and solutions of salts and aggressive foodstuffs. They contain 18 to 25 [%]Cr and 8 to 20[%] Ni.
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Steel high chrome
resistant mainly to chemical corrosion including oxidation in the atmosphere of air, natural water, water vapor, to the action of cold alkaline solutions diluted acids and salts except chlorides, sulphates and iodines and to the action of oil and fuels, oils, spirits, as well as foodstuffs.
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Corrosion of stainless steel?
An important factor influencing corrosion resistance is the smoothness and purity of the surface. Even minor surface irregularities can become the seed of corrosion. The first sign of corrosion of the general steel is usually the matting of its surface.
The reasons for changes in the appearance of the surface can be as follows:
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Stainless
Stainless steel is a common name for a large family of quality steel species which, due to the chromium content of at least 11%, are resistant to chemical or electrochemical damage to the surrounding environment. In the language of professionals, this property is called corrosion resistance.
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Steel species table
There are 4 main types of stainless steels: austenitic steel, ferrite steel, martensitic steel, ferrite-austenitic duplex steel. Each type consists of several species of steel. However, about 100 000 people will 70% of stainless steel production is austenitic steel, mainly steel with the designation 1.4301 according to EN 10088 (18% chromium, 10% nickel), so-called . steel 18-10 or 18/10 – these types of markings can be found on many stainless steel products, e.g. stainless steel products. on cutlery, pots.