STRUCTURAL STEEL Russian patent published in 2005 - IPC

Abstract RU 2251587 C2

FIELD: metallurgy, in particular structural steel composition.

SUBSTANCE: claimed steel contains (mass %): carbon 0.42-0.54p; silicium 0.15-0.50; manganese 0.90-1.50; niobium 0.01-0.08; molybdenum 0.06-0.20; aluminum 0.005-0.060; titanium 0.019-0.045; sulfur 0.001-0.045; phosphorus 0.001-0.045; nitrogen less than 0.012; chromium, nickel and copper each not more than 0.30, and balance: iron. Steel of present invention is useful in production of pipelines for oil industry operating at temperature from 50°C to -10°C.

EFFECT: steel with optimum combination of strength and viscous properties.

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RU 2 251 587 C2

Authors

Stepashin A.M.

Mul'Ko G.N.

Aleksandrov S.V.

Zajtsev A.S.

Dates

2005-05-10—Published

2003-06-30—Filed