Nitriding steel excellent in formability and susceptibility...

Details Nitriding steel excellent in formability and susceptibility... Nitriding steel excellent in formability and susceptibility...

C - Chemistry, Metallurgy

22

C

C22C 38/24 (2006.01) C22C 38/28 (2006.01) C22C 38/38 (2006.01)

Patent

CA 2199032

A nitriding steel excellent in formability and susceptibility to nitriding, comprising, based on weight, 0.0002 to less than 0.08% of C, 0.005 to 1.00% of Si, 0.010 to 3.00% of Mn, 0.001 to 0.150% of P, 0.0002 to 0.0100% of N, greater than 0.15 to 5.00% of Cr, greater than 0.060 to 2.00% of Al (Al becoming a selective component in an amount of greater than 0.10 to 2.00% when the C content is from 0.0002 to less than 0.0100%), one or two elements selected from 0.010 to 1.00% of Ti and 0.010 to 1.00% of V, and the balance Fe and unavoidable impurities, and a press formed article formed from the steel and having a hard nitride layer at least on one side.

Un acier nitruré ayant d'excellentes propriétés du point de vue de l'aptitude au formage et de la réceptivité à la nitruration comprenant, en poids, 0,0002 à moins de 0,08 % de C, 0,005 à 1,00 % de Si, 0,010 à 3,00 % de Mn, 0,001 à 0,150 % de P, 0,0002 à 0,0100 % de N, plus de 0,15 à 5,00 % de Cr, plus de 0,060 à 2,00 % d'Al (Al devenant un constituant sélectif à une quantité supérieure à 0,10 à 2,00 % lorsque la teneur en C varie de 0,0002 à moins de 0,0100 %), un ou deux éléments choisis parmi 0,010 à 1,00 % de Ti et 0,010 à 1,00 % de V, le reste étant du Fe et des impuretés inévitables, et un objet formé à la presse fabriqué de cet acier et ayant une couche de nitrure dure sur au moins un côté.

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