Steel for the production of solidly formed machine components

Details Steel for the production of solidly formed machine components Steel for the production of solidly formed machine components

C - Chemistry, Metallurgy

21

D

C21D 1/02 (2006.01) C21D 1/20 (2006.01) C22C 38/00 (2006.01)

Patent

CA 2697794

The invention relates to a steel and a processing method for producing machine components formed from solid stock, particularly for vehicle construction, having a primarily bainitic structure, characterized in that the chemical composition thereof has the following contents in weight percent: 0.10% <=C <=50.25%, 0.15% <=Si <=0.40%, 1.00% <=Mn <=51.50%, 1.00% <=Cr <=2.00%, 0.20% <=Ni <=0.40%, 0.05% <=Mo <=0.20%, 0.010% <=Nb <=0.040%, 0.05% <=V <= 0.25%, 0.01 %<=Al <=0.05%, 0.005% <=N <=0.025%, 0% <=B <=0.0050%, with the remainder being iron and the steel making-related accompanying elements and residual materials.

L'invention concerne un acier et un procédé de traitement associé destiné à produire des composants de machines mis en forme à l'état solide et utilisés en particulier dans la construction automobile, principalement sous forme bainitique. L'invention est caractérisée en ce que, sa composition chimique comprend des composés présentant les teneurs suivantes exprimées en pour cent en poids: 0,10% = C = 0,25%, 0,15% = Si = 0,40%, 1,00% = Mn = 1,50%, 1,00% = Cr = 2,00%, 0,20% = Ni = 0,40%, 0,05% = Mo = 0,20%, 0,010% = Nb = 0,040%, 0,05% = V = 0,25%, 0,01 % = Al = 0,05%, 0,005% = N = 0,025%, 0% = B = 0,0050%, le reste étant composé de fer, d'éléments d'accompagnement consécutifs à la fusion de l'acier et de sous-produits.

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