Patent SG-11201906746W-A (SG)
Title: Steel for manufacturing a component by hot forming and use of the component
Inventor: SKRLEC JASMINKO
IPC: B21D22/02
Filed: 2018-02-05
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 16 August 2018 (16.08.2018) WIPO I PCT Hu omit VIII °nolo olomiloollmoolioluo oimIE (10) International Publication Number WO 2018/146050 Al (51) International Patent Classification: C21D 8/02 (2006.01) C22C 38/26 (2006.01) B21D 22/02 (2006.01) C22C 38/38 (2006.01) C22C 38/02 (2006.01) C22C 38/48 (2006.01) C22C 38/00 (2006.01) C22C 38/58 (2006.01) (21) International Application Number: (22) International Filing Date: PCT/EP2018/052818 05 February 2018 (05.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 17155557.6 10 February 2017 (10.02.2017) EP (71) Applicant: OUTOKUMPU OYJ [FI/FI]; Salmisaarenran- ta 11, 00180 Helsinki (FI). (72) Inventors: SKRLEC, Jasminko; Scholtenhofstr. 6, 47119 Duisburg (DE). LINDNER, Stefan; Mittelstrasse 120, 47877 Willich (DE). (74) Agent: OUTOKUMPU OYJ, GROUP R&D; P.O. Box 245, 00181 Helsinki (FI). (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, 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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) of inventorship (Rule 4.17(iv)) Published: with international search report (Art. 21(3)) 1-1 kr) 1-1 O O 1-1 00 O N C (54) Title: STEEL FOR MANUFACTURING A COMPONENT BY HOT FORMING AND USE OF THE COMPONENT (57) : The invention relates to a steel for manufacturing a component by hot forming after austenization. The steel consists of in weight % less than or equal to 0.2 %, carbon (C), less than or equal to 3.5 % silicon (Si), 1.5 - 16.0 % manganese (Mn), 8.0 - 14.0 % chromium (Cr), less than or equal to 6.0 % nickel (Ni), less than or equal to 1.0 % nitrogen (N), less than or equal to 1.2 % niobium (Nb) linked to the formula Nb = 4x(C+N), less than or equal to 1.2 % titanium (Ti) so that Ti = 4x(C+N) + 0.15, and further optionally less than or equal to 2.0 % molybdenum (Mo), less than or equal to 0.15 % vanadium (V), less than or equal to 2.0 % copper (Cu), less than 0.2 % aluminum (Al), less than or equal to 0.05 % boron (B), the rest being iron and evitable impurities occupying in stainless steels. The invention also relates to the steel in transportation parts of vehicles and in pressure vessels or tubes.