Method of producing high-strength steel plates with...

Details Method of producing high-strength steel plates with... Method of producing high-strength steel plates with...

C - Chemistry, Metallurgy

22

C

C22C 38/00 (2006.01) C22C 38/04 (2006.01)

Patent

CA 2617879

The invention relates to a method of producing high-strength steel plates with excellent ductility and to the plates thus produced. According to the invention, the composition of the steel plate comprises the following concentrations expressed as weight: 0.08 % <= C <= 0.23 %, 1 % <= Mn <= 2 %, 1 <= Si <= 2 %, Al <= 0.03 %, 0.1 % <= V <= 0.25 %, Ti <= 0.010 %, S <= 0.015 %, P <= 0.1 %, 0.004 % <= N <= 0.012 %, and optionally one or more elements selected from among Nb <= 0.1, Mo <= 0.5 %, Cr <= 0.3 %, the rest of the composition comprising iron and inevitable impurities resulting from production.

Tôle d'acier dont la composition comprend, les teneurs étant exprimées en poids : 0,08% < C < 0,23%, 1%< Mn < 2%, 1< Si < 2%, Al < 0,030%, 0,1 % < V < 0,25%, Ti < 0,010%, S < 0,015%, P< 0,1 %, 0,004% < N < 0,012%, et à titre optionnel un ou plusieurs éléments choisis parmi Nb < 0,1 , Mo < 0,5%, Cr < 0,3%, le reste de la composition étant constitué de fer et d'impuretés inévitables résultant de l'élaboration.

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