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1. (WO2015029167) DUPLEX STAINLESS STEEL, AND DUPLEX STAINLESS STEEL STRUCTURE, MARINE STRUCTURE, PETROLEUM/GAS ENVIRONMENT STRUCTURE, PUMP IMPELLER, PUMP CASING, AND FLOW ADJUSTMENT VALVE BODY USING SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2015/029167    International Application No.:    PCT/JP2013/073038
Publication Date: 05.03.2015 International Filing Date: 28.08.2013
IPC:
C22C 38/00 (2006.01), C21D 6/00 (2006.01), C22C 38/58 (2006.01)
Applicants: HITACHI, LTD. [JP/JP]; 6-6, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1008280 (JP)
Inventors: OKIZAKI Naoya; (JP).
MARUNO Yusaku; (JP).
NOUJIMA Masafumi; (JP)
Agent: POLAIRE I.P.C.; 7-1, Hatchobori 2-chome, Chuo-ku, Tokyo 1040032 (JP)
Priority Data:
Title (EN) DUPLEX STAINLESS STEEL, AND DUPLEX STAINLESS STEEL STRUCTURE, MARINE STRUCTURE, PETROLEUM/GAS ENVIRONMENT STRUCTURE, PUMP IMPELLER, PUMP CASING, AND FLOW ADJUSTMENT VALVE BODY USING SAME
(FR) ACIER INOXYDABLE DUPLEX ET STRUCTURE EN ACIER INOXYDABLE DUPLEX, STRUCTURE MARINE, STRUCTURE POUR ENVIRONNEMENT PÉTROLIER/GAZIER, ROTOR DE POMPE, CORPS DE POMPE ET CORPS DE SOUPAPE DE RÉGLAGE DE DÉBIT UTILISANT CET ACIER
(JA) 二相ステンレス鋼並びにこれを用いた二相ステンレス鋼製構造物、海洋構造物、石油・ガス環境構造物、ポンプインペラ、ポンプケーシング及び流量調節弁の弁体
Abstract: front page image
(EN)This duplex stainless steel is characterized in comprising, in mass%, N: 0.3% or less, C: 0.1% or less, P: 0.1% or less, Si: 3.0% or less, Mn: 8.0% or less, Ni: 3.0-12.0%, Cr: 20.0-40.0%, Mo: 7.0% or less, W: 6.5% or less, and Ta: 0.05-1.0%, with the remainder being Fe and unavoidable impurities. The formation of tantalum nitride can thereby be limited.
(FR)Cet acier inoxydable duplex est caractérisé en ce qu'il comprend en % en masse : N : 0,3 % ou moins, C : 0,1 % ou moins, P : 0,1 % ou moins, Si : 3,0 % ou moins, Mn : 8,0 % ou moins, Ni : 3,0 à 12,0 %, Cr : 20,0 à 40,0 %, Mo : 7,0 % ou moins, W : 6,5 % ou moins, et Ta : 0,05 à 1,0 %, le reste étant du Fe et des impuretés inévitables. La formation de nitrure de tantale peut ainsi être limitée.
(JA) 本発明の二相ステンレス鋼は、質量%で、N:0.3%以下、C:0.1%以下、P:0.1%以下、Si:3.0%以下、Mn:8.0%以下、Ni:3.0~12.0%、Cr:20.0~40.0%、Mo:7.0%以下、W:6.5%以下、Ta:0.05~1.0%を含有し、残部がFe及び不可避的不純物であることを特徴とする。これにより、タンタルの窒化物の形成を抑制することができる。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)