| 摘要 |
PURPOSE:To obtain a ferrite stainless steel having good workability and excellent low temp. toughness by regulating the chemical components consisting of C, Si, Mn, Nb, Cr, N and Fe. CONSTITUTION:The titled steel contg., by weight, <=0.0100% C, <=0.40% Si, <=0.50% Mn, 0.01-0.30% Nb, 11.0-18.0% Cr and <=0.0120% N, furthermore contg. at need one or more kinds among 0.01-2.00% Ni, 0.01-0.10% Ti, 0.01-0.10% Al, 0.01-0.50% Mo and 0.01-0.50% Cu and consisting of the balance Fe with inevitable impurities is obtd. Said steel can be molded by subjecting it to usual hot working and cold working. The steel furthermore has the low toughness of about <=-80 deg.C level of energy transition temp. in the Charpy impact strength test of JIS 4.
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