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1. (WO2017154930) HIGH-STRENGTH FLAT STEEL WIRE EXHIBITING SUPERIOR HYDROGEN-INDUCED CRACK RESISTANCE
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Pub. No.: WO/2017/154930 International Application No.: PCT/JP2017/009081
Publication Date: 14.09.2017 International Filing Date: 07.03.2017
IPC:
C22C 38/00 (2006.01) ,C22C 38/34 (2006.01) ,C22C 38/54 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
34
with more than 1.5% by weight of silicon
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
54
with boron
Applicants:
新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目6番1号 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071, JP
Inventors:
松井 直樹 MATSUI, Naoki; JP
大羽 浩 OOBA, Hiroshi; JP
磯 新 ISO, Arata; JP
杉丸 聡 SUGIMARU, Satoshi; JP
手島 俊彦 TESHIMA, Toshihiko; JP
Agent:
萩原 康司 HAGIWARA, Yasushi; JP
金本 哲男 KANEMOTO, Tetsuo; JP
亀谷 美明 KAMEYA, Yoshiaki; JP
Priority Data:
2016-04396107.03.2016JP
Title (EN) HIGH-STRENGTH FLAT STEEL WIRE EXHIBITING SUPERIOR HYDROGEN-INDUCED CRACK RESISTANCE
(FR) FIL D'ACIER PLAT HAUTE RÉSISTANCE PRÉSENTANT UNE RÉSISTANCE SUPÉRIEURE À LA FISSURATION INDUITE PAR L'HYDROGÈNE
(JA) 耐水素誘起割れ性に優れた高強度平鋼線
Abstract:
(EN) Provided is a high-strength flat steel wire that contains, by wt%, C: 0.25-0.60%, Si: over 0.50% and below 2.0%, Mn: 0.20-1.50%, S: 0.015% or less, P: 0.015% or less, Cr: 0.005-1.50%, Al: 0.005-0.080%, and N: 0.0020-0.0080%, and further contains Ca: 0-0.0050% and/or Mg: 0-0.0050% so as to satisfy [Ca]+[Mg]>0.20×[S], the remainder comprising Fe and impurities. The high-strength flat steel wire has a tensile strength of at least 1000 Mpa, an average hardness Hv, as measured in a cross-section perpendicular to the longitudinal direction, of 320 to 450, inclusive, the standard deviation σHv of the measured value being 15 or less, and a width/thickness ratio of 1.5 to 10, inclusive. [Ca], [Mg], and [S] represent the content amount of each element by wt%.
(FR) L'invention concerne un fil d'acier plat haute résistance qui contient, en pourcentage massique, C : 0,25 à 0,60 %, Si : plus de 0,50 % et moins de 2,0 %, Mn : 0,20 à 1,50 %, S : 0,015 % ou moins, P : 0,015 % ou moins, Cr : 0,005 à 1,50 %, Al : 0,005 à 0,080 % et N : 0,0020 à 0,0080 %, ledit fil d'acier plat contenant en outre Ca : 0 à 0,0050 % et/ou Mg : 0 à 0,0050 %, de façon à satisfaire [Ca] + [Mg] > 0,20 × [S], le reste comprenant du Fe et des impuretés. Le fil d'acier plat haute résistance a une résistance à la traction d'au moins 1000 MPa, une dureté moyenne Hv, telle que mesurée dans une section transversale perpendiculaire à la direction longitudinale, de 320 à 450 inclus, l'écart-type σHv de la valeur mesurée étant inférieur ou égal à 15, et un rapport largeur/épaisseur de 1,5 à 10 inclus. [Ca], [Mg] et [S] représentent la teneur de chaque élément, en % en poids.
(JA) 質量%で、C:0.25~0.60%、Si:0.50%超2.0%未満、Mn:0.20~1.50%、S:0.015%以下、P:0.015%以下、Cr:0.005~1.50%、Al:0.005~0.080%、N:0.0020~0.0080%を含有し、さらにCa:0~0.0050%、Mg:0~0.0050%のうち、1種または2種を[Ca]+[Mg]>0.20×[S]を満足するように含有し、残部はFeおよび不純物からなり、引張強度が1000MPa以上、かつ長手方向に垂直な断面において測定されるHv硬さの平均値が320以上450未満、測定値の標準偏差σHvが15以下であって、幅/厚み比が1.5以上10以下である高強度平鋼線。[Ca]、[Mg]、[S]は、それぞれの元素の質量%での含有量を表す。
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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)