오스테나이트계 스테인리스 강재 및 내식성 부재

• Main Authors: MORITA KAZUNARI, KAWANO AKINORI
• Format: Patent
• Language: Korean
• Published: 27.07.2022
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

질량 기준으로, C：0.001~0.100%, Si：5.00% 이하, Mn：2.50% 이하, P：0.050% 이하, S：0.0300% 이하, Ni：6.00~26.00%, Cr：14.00~26.00%, Mo：8.00% 이하, Cu：4.00% 이하, N：0.350% 이하, Al：3.500% 이하를 포함하고, 잔부가 Fe 및 불순물로 이루어지는 조성을 갖는, 내식성이 뛰어난 오스테나이트계 스테인리스 강재이다. 이 오스테나이트계 스테인리스 강재는, 표면의 산술 평균 거칠기 Ra가 0.10~3.00μm 및 60도 경면 광택 Gs(60°)가 10~100%이다. An austenitic stainless steel product having a composition comprising 0.001-0.100% of C, at most 5.00% of Si, at most 2.50% of Mn, at most 0.050% of P, at most 0.0300% of S, 6.00-26.00% of Ni, 14.00-26.00% of Cr, at most 8.00% of Mo, at most 4.00% of Cu, at most 0.350% of N, and at most 3.500% of Al, on the basis of mass, and the balance comprising Fe and impurities; and excellent in corrosion resistance. The austenitic stainless steel product has an arithmetic mean roughness Ra on the surface of 0.10-3.00 μm, and a specular gloss at 60° Gs (60°) of 10-100%.