HIGH-STRENGTH MULTIPHASE STEEL AND METHOD FOR PRODUCING A STRIP FROM THIS STEEL Russian patent published in 2017 - IPC C21D8/02 C21D9/46 C22C38/00 C23C2/06 

Abstract RU 2615957 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to high-strength multiphase steel with minimum tear resistance of 580 MPa mainly with two-phase structure for cold- or hot-rolled steel strip with improved formability, in particular for production of lightweight constructions for vehicles, consisting of elements by wt %: C 0.075 to ≤0.105; Si 0.200 to ≤0.300; Mn 1.000 to ≤2.000; Cr 0.280 to ≤0.480; Al 0.010 to ≤0.060; R≤0.020; Nb≥0.005 to ≤0.025; N≤0.0100; S≤0.0050; the rest is iron including usual steel accompanying elements not listed above.

EFFECT: increased strength.

16 cl, 9 dwg

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RU 2 615 957 C2

Authors

Shults, Tomas

Vedemajer, Andreas

Pol, Mikhael

Krats, Khans-Joakhim

Geler, Mattias

Mejer, Oliver

Dates

2017-04-11Published

2013-02-27Filed