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Alloy steels have a balanced composition is usually based on iron and chromium. Depending on the presence of certain alloying components, such raw materials are, as a rule, has a range of useful qualities, urgently demanded in modern industry. Alloy 08KH18N12B (ЭИ402) due to the high chromium content up to 19%, complemented by successfully balanced composition of a number of alloying substances, characterized by high technological and mechanical properties, excellent ductility, good weldability, resistance to corrosion in a wide range of temperatures down to cryogenic.
The basis of corrosion-resistant ordinary steels 08KH18N12B are iron and chrome. Thanks to the latter, the surface of the material when in contact with atmospheric air is covered with a strong oxide film character, which actively protects the product from harmful influence of aggressive environment. Alloy 08KH18N12B contains a list of alloying components — additives silicon, manganese, niobium, etc. that increase the useful qualities of the material.
Percentage composition GOST 5632−72.
The scope of such material, as alloy 08KH18N12B quite diverse. Particularly relevant semi brand 08KH18N12B in industrial chemistry, energy industry, cryogenic engineering. Welded structures heat exchangers and refrigeration equipment, resistant to extremely low temperatures down to — 253 °C parts of aircraft and spacecraft.
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