<p>The invention concerns a method for manufacturing a worked weldable, low temperature ferritic steel consisting of 0.015 to 0.08% C 0.1 to 0.5% Si 0.3 to 0.6% Mn <0.015% P <0.015% S 4 to 7% Ni 0 to 1.5% Cu the rest iron and unavoidable impurities in normal amounts which is characterized in that the steel has added to it 0.15 to 0.25% vanadian and 0.020 to 0.030% nitrogen; the steel being rolled and then cooled to room temperature and finally subjected to a one time normalizing. Such a steel is usable as work material for making construction part especially for the transport and storage of liquified natural gas and having at a temperature of -196 DEG C. a notch charpy impact value at longitudinal test samples of more than 42 J.</p>
申请公布号
DE3432337(C2)
申请公布日期
1987.07.02
申请号
DE19843432337
申请日期
1984.09.03
申请人
HOESCH STAHL AG, 4600 DORTMUND, DE
发明人
BINIASZ, FRANZ-JOSEF;ENGL, BERNHARD, DR.;FUCHS, AXEL, DR.;HUESER, MARGIT, 4600 DORTMUND, DE
