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2 237 099

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Application

2003110348/02, 2003-04-14

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Start date

2003-04-14

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Actual filing date

2003-04-14

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Published

2004-09-27

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Inventor

Bobylev M.V.Kulapov A.N.Stepanov N.V.Antonova Z.A.Lekhtman A.A.Gontaruk E.I.Peshev A.D.Lamukhin A.M.Vodovozova G.S.Koroleva E.G.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Inso"

HIGH-STRENGTH STEEL OF IMPROVED HARDENABILITY Russian patent published in 2004 - IPC

Abstract RU 2237099 C1

FIELD: metallurgy, in particular constructional high-strength steel for weld-fabricates constructions.

SUBSTANCE: steel of invention contains (mass.%): carbon 0.14-0.20; manganese 1.10-1.50; silicium 0.15-0.35; boron 0.0010-0.0050; molybdenum 0.45-0.55; aluminum 0.03-0.06; titanium 0.01-0.04; nitrogen 0.005-0.015; calcium 0.001-0.010; sulfur 0.005-0.020; and balance iron, with the proviso that Ti/48+Al/27-N/14>=0.6x10-3; Mn+3.0xMo>=2.7. Claimed steel exhibits improved hardenability and useful for production of sheets having throughout hardenability, improved thermal properties with thickness 40 mm and less, as well as of bar section with diameter 50 mm and less.

EFFECT: steel excellent in hardenability.

2 tbl

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RU 2 237 099 C1

Authors

Bobylev M.V.

Kulapov A.N.

Stepanov N.V.

Antonova Z.A.

Lekhtman A.A.

Gontaruk E.I.

Peshev A.D.

Lamukhin A.M.

Vodovozova G.S.

Koroleva E.G.

Dates

2004-09-27—Published

2003-04-14—Filed

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