HEAT-RESISTANT STEEL OF MARTENSITIC CLASS AND PREPARATION METHOD THEREOF Russian patent published in 2016 - IPC C22C38/54 C22C38/32 C21D8/00 

Abstract RU 2598725 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to composition of heat-resistant chromium martensite steel used for making elements, including boilers, pipes for steam pipelines in power plants. Steel contains, wt.%: carbon 0.09-0.13, silicon - not over 0.1, manganese 0.3-0.4, chromium 8.5-9.5, nickel not over 0.2, tungsten 1.5-2.0, molybdenum 0.4-0.6, cobalt 2.5-3.5, vanadium 0.15-0.2, niobium 0.04-0.06, tantalum 0.08-0.1, nitrogen - less than 0.005, boron 0.01-0.013, sulfur - not over 0.006, phosphorus not over 0.01, copper not over 0.1, aluminium not over 0.01, iron - the rest.

EFFECT: this steel has high durable strength values.

3 cl, 3 tbl

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RU 2 598 725 C2

Authors

Kajbyshev Rustam Oskarovich

Belyakov Andrej Nikolaevich

Dudova Nadezhda Ruzilevna

Dudko Valerij Aleksandrovich

Fedoseeva Aleksandra Eduardovna

Mishnev Roman Vladimirovich

Dates

2016-09-27Published

2014-11-28Filed