Patent SG-11201810590S-A (SG)
Title: Micro alloyed steel and method for producing said steel
Inventor: KOSCHLIG BERNHARD
IPC: C22C38/18
Filed: 2017-07-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date °mons °nolo omm OHOilIIIIII101 o iflo oimIE (10) International Publication Number WO 2018/011299 Al 18 January 2018 (18.01.2018) W I PO I PCT (51) International Patent Classification: MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, C22C 38/02 (2006.01) C22C 38/08 (2006.01) TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, C22C 38/04 (2006.01) C22C 38/12 (2006.01) KM, ML, MR, NE, SN, TD, TG). C21D 6/00 (2006.01) C22C 38/14 (2006.01) C21D 7/13 (2006.01) C22C 38/16 (2006.01) Published: C21D 8/10 (2006.01) C22C 38/18 (2006.01) — with international search report (Art. 21(3)) C21D 9/08 (2006.01) C22C 38/58 (2006.01) C21D 1/18 (2006.01) (21) International Application Number: PCT/EP2017/067606 (22) International Filing Date: 12 July 2017 (12.07.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16305910.8 13 July 2016 (13.07.2016) EP (71) Applicant: VALLOUREC DEUTSCHLAND GMBH [DE/DE]; Theodorstrasse 109, 40472 DUSSELDORF (DE). (72) Inventors: KOSCHLIG, Bernhard; Kanzlerstr. 17, 40472 DUSSELDORF (DE). SCHERF, Stephan; Weseler Str. 45, 40239 DUSSELDORF (DE). HOJDA, Ralf; Blumen- str. 1, 58762 ALTENA (DE). NIRELLO, Rodolfo; Rue des Narcisses 38, 59330 HAUTMONT (FR). (74) Agent: CASALONGA; CASALONGA & ASSOCIES, 8 Avenue Percier, 75008 PARIS (FR). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 1-1 • EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, el (54) Title: MICRO ALLOYED STEEL AND METHOD FOR PRODUCING SAID STEEL 1-1 1-1 (57) : The invention deals with Steel for seamless pipes comprising the following chemical composition elements in weight percent: 0.04 < C < to 0.18, 0.10 < Si < 0.60, 0.80 < Mn < 1.90, P < 0.020, S < 0.01, 0.01 < Al < 0.06, 0.50 < Cu < 1.20, 0.10 < Cr < • 0.60, 0.60 < Ni < 1.20, 0.25 < Mo < 0.60, B < 0.005, V < 0.060, Ti < 0.050, 0.010 < Nb < 0.050, 0.10 < W < 0.50, N < 0.012, where 1-1 © the balance is Fe and inevitable impurities. The steel of the invention can be used in offshore applications, line process pipes, structural N and mechanical applications, especially where harsh environmental conditions and service temperatures down to -80°C occur.