C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/11, 75/117
C21D 1/00 (2006.01) C22C 38/04 (2006.01)
Patent
CA 1221560
INVENTOR: BERND KOS INVENTION: WORK-HARDENABLE AUSTENITIC MANGANESE STEEL AND METHOD FOR THE PRODUCTION THEREOF ABSTRACT OF THE DISCLOSURE A work-hardenable austenitic manganese steel has a base composition (each in percent by weight) of 0.7 to 1.7 carbon, 5.0 to 18.0 manganese, 0 to 3.0 chromium, 0 to 4.0 nickel, 0 to 2.5 molybdenum, 0.1 to 0.9 silicon, up to 0.1 phosphorus and contains micro-alloying elements of 0.0 to 0.20 titanium, 0.0 to 0.05 zirconium and 0.0 to 0.05 vanadium; the remainder being iron and impurities arising from the melting process. The ratio of carbon to manganese is in the range of 1 : 4 to 1 : 14 and the total amount of micro-alloying elements is limited to a range of 0.002 to 0.25 percent by weight. The melt of the base composition is tapped at 1,450°C to 1,600°C into a casting ladle in which the micro-alloying elements are added. An ingot is cast, cooled, reheated to austenitization temperatures and quenched.
439018
Johnson & Hicks
Vereinigte Edelstahlwerke Ag (vew)
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