Patent AU-2017433092-B2 (AU)
Title: Steel Material
Inventor: SUGAE KIYONOBU
IPC: C21D8/02
Filed: 2017-12-14
Granted: 2020-03-12
Abstract: ( (10) (43) P9Wm > TIH 2019*60 20 H (20.06.2019) WO 2019/116520 Al (51) PqgVi -fi 3 :f (74) jtJ-_)A: * ge A M j ),K A f V-| ' * %g *$ j-pi C22C 38/00 (2006.01) C22C 38/60 (2006.01) (TAIYO, NAKAJIMA & KATO); T1600022 C21D 8/02 (2006.01) E$:$7t ff#$ 4 T 1 3 * 1 7 Tokyo (JP). (21) 5 5R :PCT/JP2017/044984 (81) UNg(g ttsgoA o¶Jgh (22) P9 R Vl :AEl 2017 * 12 A 14 HJ(14.12.2017) gi ): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, (255) )Vl5Ro)g : S -T. CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (26) r)e I H 13M- DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (71) U1R A : #R H 211 4 *i(NIPPON STEEL HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, & SUMITOMO METAL CORPORATION) [JP/ KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, JP];U~I100807OME TORO TN o -. MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, i]; T 1008071 3T (0 NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, TH61-Tokyo(Q). QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, (72) 5H #: N I] A (SUGAE, Kiyonobu); SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, T1008071 *3-T L 0:t E 0) --. T F 6 UG, US, UZ, VC, VN, ZA, ZM, ZW. 1 -q V ET21to 4 Tokyo (JP). --(84) (DOI,Takashi); T10080 A P: ARIPO (BW, GH, GM, KE, LR, LS, l A 0) -- T F 6 1 - f H MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM = okyo (P). § -(SHIGESATO, ZW), - -5 7 (AM, AZ, BY, KG, KZ, RU, TJ Genichi); T1008071 13TV t lE --. T TM), - - F 7/(AL, AT, BE, BG, CH, CY, CZ, 6 % 1~- R tH ± *T okyo (JP). DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, (KASHIMA, Kazuyuki); T 1008071 LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, 07 It X A ) - -- T 6 11 - ft H SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, TT yo~ GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: STEEL MATERIAL (57) Abstract: A steel material which has a chemical composition that contains, in mass%, 0.01-0.20% of C, 0.01-1.00% of Si, 0.05-3.00% of Mn, 0-0.050% of P, 0-0.0100% of S, 0.05-0.25% of Sn, 0-0.100% of Al, 0.0005-0.0100% of N, 0.0001-0.0100% of 0, 0-0.050% of Ti, 0-0.050% of Nb, 0-0.050% of V, 0-0.050% of W, 0-0.050% of Mo, 0-0.10% of Cu, 0-0.05% of Ni, 0-0.10% of Cr, 0-0.05% of Sb, 0-0.0010% of B, 0-0.0100% of Ca, 0-0.0100% of Mg and 0-0.0100% of REM, with the balance made up of Fe and impurities. This steel material is configured such that the Sn ratio, which is expressed by the a/b ratio between the Sn concentration (a) at the crystal grain boundaries and the Sn concentration (b) within the crystal grains, is 1.2 or less. (57) J: jb#j-% t P !Ulii:% T,, C : 0. 0 1 0. 2 0 %, S i : 0. 0 1 -1 .0 0 %, M n : 0 .05-3. 00%, P:0- 0. 050%, S: 0~-0. 0100%, Sn:0. 05- 0. 25%, AI:0-0. 100%, N:0. 0005-0. 0100%, 0:0. 0001-0. 0100%, Ti:0-0. 050%, Nb:0-0. 050%, V:0-0. 050%,W:0-0. 050%, M 0:0-0. 050%, Cu:0-0. 10%, Ni:0-0. 05%, Cr:0-0. 10%, Sb: 0-0. 05%, B:0- 0. 0010%, Ca:0- 0. 0100%, Mg :0~-0. 0100%, R E M : 0 - 0 . 0 1 0 0 %, - : F e 1 J -KUJt , H$a]W ) S n a ] LiM, r- 0 H S n rk- [ b ] 0 [ a / b ] -C c h 6 S n JW 1 . 2 J-FTT" H 61W. W O 2019/116520 A 1 ||11||||||||||||||I|I|||11||1|I|II|I|I|I|||I|I|I||||I|||||||||||||||||||||||