Class: Corrosion-resistant alloys.

Use in industry: power engineering and pechestroenie, turbine blades, bolts, nuts, fittings crackers with long life at temperatures up to 500 degrees; martensitic steel grade.

20X13 steel of martensitic steel and other class: heat resistant chromium steels martensitic class used in various power plants, they operate at temperatures up to 600 °.

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