Maier & Maier, PLLC
High Cr ferritic/martensitic steels having an improved creep resistance for in-core component materials in nuclear reactor, and preparation method thereof
Disclosed herein is a high Cr Ferritic/Martensitic steel comprising 0.04 to 0.13% by weight of carbon, 0.03 to 0.07% by weight of silicon, 0.40 to 0.50% by weight of manganese, 0.40 to 0.50% by weight of nickel, 8.5 to 9.5% by weight of chromium, 0.45 to 0.55% by weight of molybdenum, 0.10 to 0.25% by weight of vanadium, 0.02 to 0.10% by weight of tantalum, 0.21 to 0.25% by weight of niobium, 1.5 to 3.0% by weight of tungsten, 0.015 to 0.025% by weight of nitrogen, 0.01 to 0.02% by weight of boron and iron balance. By regulating the contents of alloying elements such as nitrogen, born, the high Cr Ferritic/Martensitic steel with superior tensile strength and creep resistance is provided, and can be effectively used as an in-core component material for sodium-cooled fast reactor (SFR).
KOREA HYDRO AND NUCLEAR POWER CO., LTD KOREA ATOMIC ENERGY RESEARCH INSTITUTE
C C C C C G C C G C C C C
C22C C22C C22C C22C C22C G21C C21D C21D G21C C21D C22C C22C C22C
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Tae Kyu Yeong-Il Chang Hee Chan Bock Woo Gon Dohee Jun Hwan Sung Ho Jong Hyuk
Kim Kim Han Lee Kim Hahn Kim Kim Baek