Martensite stainless steel and manufacturing method thereof

The invention discloses a martensitic stainless steel and a manufacture method thereof. The martensitic stainless steel is characterized in that the stainless steel comprises the following chemical elements by weight percentage: 0.13 to 0.18 percent of C, 0.06 to (C-0.06) percent of N, less than or...

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Bibliographische Detailangaben
Hauptverfasser: ZHENG HAOYU, CUI PEIYAO, HE LEI, WANG JUN, WANG ZHIYU, WANG QIANG, YANG JUN, QIN BIN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a martensitic stainless steel and a manufacture method thereof. The martensitic stainless steel is characterized in that the stainless steel comprises the following chemical elements by weight percentage: 0.13 to 0.18 percent of C, 0.06 to (C-0.06) percent of N, less than or equal to 1.00 percent of Si, less than or equal to 1.00 percent of Mn, 12.00 to 14.00 percent of Cr, less than or equal to 0.035 percent of P, less than or equal to 0.030 percent of S, and the residual amount of Fe and inevitable impurities, wherein, C plus N is more than or equal to 0.21 percent. The manufacture method comprises the following steps: 1) continuous casting or mold casting is carried out, and then cooling is carried out at less than or equal to 10 DEG C/minute; 2) hot rolling is carried out with heating temperature of 1,200 to 1,250 DEG C, initial rolling temperature of less than or equal to 1,180 DEG C, and finishing temperature of more than or equal to 980 DEG C, and a steel coil is naturally coole