Cold-forming steel

Details Cold-forming steel Cold-forming steel

C - Chemistry, Metallurgy

22

C

C22C 38/28 (2006.01) C22C 38/22 (2006.01) C22C 38/24 (2006.01) C22C 38/26 (2006.01) C22C 38/50 (2006.01)

Patent

CA 2226350

Cold-forming steel obtained by smelting and refining of an alloy characterized in that the alloy has the following composition by weight: 0.80 - 1.50% carbon, < 1% manganese, < 1% silicon, ~ 0.030% phosphorus, ~ 0.005% sulphur, 6.25 - 9% chromium, < 0.50% nickel, 1.80 - 3% molybdenum, ~ 0.15% aluminum, 0.20 - 0.40% vanadium, 0.60 - 1.50% niobium, < 150 ppm nitrogen, < 50 ppm oxygen, and 500 - 1500 ppm titanium or zirconium, with the remainder being iron plus the impurities characteristic of metal fabrication.

Acier pour le formage à froid obtenu par fusion et affinage d'un alliage caractérisé en ce que l'alliage a la composition pondérale suivante : Carbone 0,80 - 1,50 % Manganèse < 1 % Silicium < 1 % Phosphore ~ 0,030 % Soufre ~ 0,005 % Chrome 6,25 - 9 % Nickel < 0,50 % Molybdène 1,80 - 3 % Aluminium ~ 0,15 % Vanadium 0,20 - 0,40 % Niobium 0,60 - 1,50 % Azote < 150 ppm Oxygène < 50 ppm Titane ou 500 - 1500ppm Zirconium Le complément étant du fer plus les impuretés caractéristiques de la pratique de la fabrication du métal.

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