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2 127 770

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C1

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IPC

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Application

98105994/02, 1998-03-17

(22)

Actual filing date

1998-03-17

(45)

Published

1999-03-20

(72)

Inventor

Zakirov D.M.Bobylev M.V.Lavrinenko Ju.A.Akimenkov A.N.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

STRUCTURAL STEEL OF HIGH HARDENABILITY Russian patent published in 1999 - IPC

Abstract RU 2127770 C1

FIELD: metallurgy, in particular, devising of structural high-strength steel for manufacture of billets used in cold upsetting of fasteners. SUBSTANCE: structural steel of high hardenability contains carbon, manganese, silicon, boron, nitrogen and iron in the following ratio of components, wt. %: carbon, 0.10-0.20; manganese, 0.90-1.40; silicon, 0.15-0.30; molybdenum, 0.01-0.30; boron, 0.0005-0.0050; titanium, 0.01-0.04; nitrogen, 0.005-0.015; iron, the balance; provided the content of elements satisfying the following relations and Mn+5xMo≥2.15. EFFECT: increased hardenability characteristics; provision of throughout hardenability of thermally improved metal products up to 32 mm in diameter. 2 tbl

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RU 2 127 770 C1

Authors

Zakirov D.M.

Bobylev M.V.

Lavrinenko Ju.A.

Akimenkov A.N.

Dates

1999-03-20—Published

1998-03-17—Filed

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