C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/04 (2006.01)
Patent
CA 2595609
The invention relates to an austenitic iron-carbon-manganese metal sheet whose chemical composition comprises the following contents expressed in weight: 0.45 % = C = 0.75 %, 15 % = Mn = 26 %, Si = 3 %, Al = 0.050 %, S = 0.030 %, P= 0.080 %, N = 0.1 %, at least one metallic element selected from the group consisting of vanadium, titanium, niobium, chromium, molybdenum 0.050 % = V = 0.50 %, 0.040 % = Ti = 0.50 %, 0.070 % = Nb = 0.50 %, 0.070 % = Cr = 2 %, 0.14 % = Mo = 2 % and, optionally, one or more elements selected among 0.0005 % = B = 0.003 %, Ni = 1 %, Cu = 5 %, the remainder of the composition consisting of iron and of unavoidable impurities resulting from the processing, the quantity of said at least one metallic element in the form of precipitated carbides, nitrides or carbonitrides being: 0.030 % = V<SUB>p</SUB> = 0.150 %, 0.030 %= Ti<SUB>p</SUB> = 0.130 %, 0.040 % = Nb<SUB>p</SUB> = 0.220 %, 0.070 % = Cr<SUB>p </SUB>= 0.6 %, 0.14 % = Mo<SUB>p</SUB> = 0.44 %.
Tôle en acier austénitique fer-carbone-manganèse, dont Ia composition chimique comprend, les teneurs étant exprimées en poids : 0,45% < C < 0,75%, 15%<= Mn < 26%, Si < 3%, Al < 0,050%, S < 0,030%, P< 0,080%, N < 0,1 %, au moins un élément métallique choisi parmi le vanadium, le titane, le niobium, le chrome, le molybdène 0,050% <V < 0,50%, 0,040% <=Ti < 0,50%, 0,070% < Nb < 0,50%, 0,070% <=Cr < 2 %, 0,14% <=Mo < 2%, et à titre optionnel un ou plusieurs éléments choisis parmi 0,0005% <=B < 0,003%, Ni < 1%, Cu < 5%, le reste de la composition étant constitué de fer et d'impuretés inévitables résultant de l'élaboration, la quantité dudit au moins un élément métallique sous forme de carbures, nitrures ou de carbonitrures précipités étant : 0,030% <VP < 0,150%, 0,030%<Tip <= 0,130%, 0,040% <= Nbp < 0,220%, 0,070% <Crp< 0,6%, 0,14%<Mop < 0,44%.
Cornette Dominique
Cugy Philippe
Dez Anne
Roscini Maurita
Scott Colin
Arcelor France
Arcelormittal France
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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