Outokumpu Oyj

Raimo Levonmaa

Juha Kela

Jukka K&ouml;mi

Pentti Saxlund

Joni Koskiniemi

Kari Huttunen

The invention relates to a ferritic stainless steel having excellent corrosion and sheet forming properties. The steel consists of in weight percentages 0.003-0.035% carbon, 0.05-1.0% silicon, 0.1-0.8% manganese, 20-24% chromium, 0.05-0.8% nickel, 0.003-0.5% molybdenum, 0.2-0.8% copper, 0.003-0.05% nitrogen, 0.05-0.8% titanium, 0.05-0.8% niobium, 0.03-0.5% vanadium, less than 0.04% aluminium, and the sum C+N less than 0.06%, the remainder being iron and inevitable impurities in such conditions, that the ratio (Ti+Nb)/(C+N) is higher or equal to 8, and less than 40, and the ratio Ti/C=(Ti+0.5l5*Nb+0.940*V)/(C+0.858*N) is higher or equal to 6, and less than 40.

Ferritic stainless steel

The invention relates to a method for improving the lubrication of the edges and ends of objects to be rolled, particularly hot rolled, said objects consisting of essentially planar surfaces and being for example metal sheets or strips. According to the invention, the lubricating medium is fed so that it is applied on the edge area of the object to be rolled (,), essentially during the whole rolling pass, and so that lubricating medium is applied, when beginning or finishing a rolling pass, essentially along the whole width of the object to be rolled (,), in the immediate vicinity of the ends of the object to be rolled.

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Turku, Finland

Raimo Levonmaa