Steel material for hot work tools

C - Chemistry – Metallurgy – 22 – C

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C22C 38/24 (2006.01) C22C 38/22 (2006.01)

Patent

CA 2324499

A steel material for hot work tools has an alloy composition that in weight-% essentially consists of: 0.3-0.4 C, 0.2-0.8 Mn, 4-6 Cr, 1.8-3 Mo, 0.4-0.8 V, balance iron and unavoidable metallic and non-metallic impurities, said non-metallic impurities comprising silicon, nitrogen, oxygen, phosphor and sulphur, the contents of which does not exceed the following maximum contents: max. 0.25 Si, max. 0.010 N, max. 10 ppm O, max. 0.010 weight-% P.

Acier pour outils de corroyage contenant une composition d'alliage constituée en pourcentages en poids par: C 0,3-0,4; Mn 0,2-0,8, Cr 4-6, Mo 1,8-3, V 0,4-0,8, le reste étant constitué par du fer et par des impuretés inévitables métalliques et non métalliques, lesdites impuretés non métalliques consistant en silicium, azote, oxygène, phosphore et soufre, dont la teneur ne dépasse pas la teneur maximum suivante: Si 0,25 maximum; N 0,010 maximum; O 10 ppm maximum; P 0,010 % en poids.

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