C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/34.4
C21D 9/46 (2006.01) C21D 8/02 (2006.01) C22C 38/12 (2006.01)
Patent
CA 1105813
ABSTRACT OF THE DISCLOSURE A method for producing a steel sheet having excellent low-temperature toughness, comprising a step of heating to a temperature not higher than 1150°C, a steel slab containing 0.01- 0.13% C, 0.05 - 0.8% Si, 0.8 - 1.8% Mn, 0.01 - 0.08% total Al, 0.08 - 0.40% Mo and not more than 0.015% S with the balance be- ing iron and unavoidable impurities, and a step of hot rolling the steel slab thus obtained by at least three passes with a minimum reduction percentage not less than 2% by each rolling pass in a temperature range of 900 - 1050°C, a total reduction percentage not less than 50%, and with a finishing temperature not higher than 820°C.
285604
Masui Hiroaki
Mazuda Hiroo
Nakasugi Hajime
Tamehiro Hiroshi
Nippon Steel Corporation
Swabey Ogilvy Renault
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