Flexible hot rolled steel sheets having improved deep...

Details Flexible hot rolled steel sheets having improved deep... Flexible hot rolled steel sheets having improved deep...

C - Chemistry, Metallurgy

22

C

C22C 38/18 (2006.01) C22C 38/26 (2006.01) C22C 38/28 (2006.01) C22C 38/32 (2006.01)

Patent

CA 2014039

A flexible hot rolled steel sheet having an improved deep drawability comprises not more than 0.10 wt% of C, less than 0.20 wt% of Mn, 0.10-2.0 wt% of Cr, 0.002-0.100 wt% of Al, and the balance being Fe and inevitable impurities or further contains particular amounts of at least one of Ti, Nb and Zr and/or B. Such a hot rolled steel sheet has a tensile strength of not more than 35 kgf/mm2 and a total elongation of not less than 50%.

Une tôle d'acier flexible laminée à chaud et ayant une aptitude améliorée à l'emboutissage comprend au maximum 0,10 % en poids de C, moins de 0,20 % en poids de Mn, de 0,10 à 2,0 % en poids de Cr, de 0,002 à 0,100 % en poids d'Al, le reste étant composé de fer et d'impuretés inévitables, ou contient aussi des quantités particulières d'au moins l'un des éléments suivants: Ti, Nb et Zr et/ou B. Cette tôle d'acier laminée à chaud a une limite élastique n'excédant pas 35 kgf/mm2 et un allongement total d'au moins 50 %.

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