WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR DUCTILITY AND METHOD FOR PRODUCING SAME

• Main Authors: SUH, In-Shik, NOH, Hee-Goon, CHOI, Jong-Kyo, LEE, Soon-Gi, LEE, Hong-Ju, LEE, Hak-Cheol, PARK, In-Gyu, CHO, Hyun-Kwan
• Format: Patent
• Language: English; French; German
• Published: 19.06.2019
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Provided are a wear resistant austenitic steel having superior machinability and ductility and a method for producing same, the austenitic steel comprising, in weight %, 8 to 15% of manganese (Mn), carbon (C) that satisfies the relationship of 23% < 33.5C-Mn ‰¤ 37%, copper (Cu) that satisfies 1.6C-1.4(%) ‰¤ Cu ‰¤ 5%, 0.03 to 0.1% of sulfur (S), 0.001 to 0.01% of calcium (Ca), the remainder being Fe and other inevitable impurities. According to the present invention, austenitic steel having superior machinability is provided in which the generation of carbide in the steel is inhibited in order to prevent degradation of the steel, and corrosion resistance is sufficiently ensured to enable the steel to be used with a long service life in a corrosive environment.