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1. (WO2018038197) SULFURIC ACID DEW POINT CORROSION-RESISTANT STEEL
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Pub. No.: WO/2018/038197 International Application No.: PCT/JP2017/030261
Publication Date: 01.03.2018 International Filing Date: 24.08.2017
IPC:
C22C 38/00 (2006.01) ,C22C 38/60 (2006.01) ,C21D 8/02 (2006.01) ,C21D 9/46 (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
60
containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
02
during manufacturing of plates or strips
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
46
for sheet metals
Applicants:
JFEスチール株式会社 JFE STEEL CORPORATION [JP/JP]; 東京都千代田区内幸町二丁目2番3号 2-3, Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo 1000011, JP
Inventors:
猪原 康人 INOHARA Yasuto; JP
村瀬 正次 MURASE Masatsugu; JP
菊池 啓泰 KIKUCHI Hiroyasu; JP
桐本 俊司 KIRIMOTO Shunji; JP
Agent:
杉村 憲司 SUGIMURA Kenji; JP
Priority Data:
2016-16515025.08.2016JP
Title (EN) SULFURIC ACID DEW POINT CORROSION-RESISTANT STEEL
(FR) ACIER RÉSISTANT À LA CORROSION AU POINT DE ROSÉE DE L'ACIDE SULFURIQUE
(JA) 耐硫酸露点腐食鋼
Abstract:
(EN) The purpose of the present invention is to provide a sulfuric acid dew point corrosion-resistant steel which simultaneously achieves excellent resistance to sulfuric acid dew point corrosion and productivity, and which also has excellent bending properties and anti-fatigue properties. This invention relates to a sulfuric acid dew point corrosion-resistant steel which has a prescribed component composition and in which the content of S, Cu, Sn and Sb satisfy expression (1) below and the content of Cu, Ni, Sn, Sb and Co satisfy the relation of expression (2) below. 0.50 ≦ [%Cu] / (10×[%S]+[%Sn]+[%Sb]) ≦ 5.00 ... (1) 0.50 ≦ ([%Ni]+5×[%Co]) / ([%Cu]+[%Sb]+10×[%Sn]) ≦ 2.50 ... (2) Here, [%S], [%Cu], [%Ni], [%Sn], [%Sb] and [%Co] are the content (mass%) of S, Cu, Ni Sn, Sb and Co, respectively, in the component composition.
(FR) L'objet de la présente invention est de fournir un acier résistant à la corrosion au point de rosée de l'acide sulfurique qui assure simultanément une excellente résistance à la corrosion au point de rosée de l'acide sulfurique et une excellente productivité, et qui présente également d'excellentes propriétés de flexion et d'excellentes propriétés anti-fatigue. La présente invention concerne un acier résistant à la corrosion au point de rosée de l'acide sulfurique qui comporte une composition de constituants prédéfinie et dans laquelle la teneur en S, Cu, Sn et Sb satisfait à l'expression (1) ci-dessous et la teneur en Cu, Ni, Sn, Sb et Co satisfait à la relation d'expression (2) ci-dessous. 0,50 ≦ [% Cu]/(10 × [% S] + [% Sn] + [% Sb]) ≦ 5,00 ... (1) 0,50 ≦ ( [% Ni] + 5 × [% Co])/([% Cu] + [% Sb] + 10 × [% Sn]) ≦ 2,50 ... (2) Dans lesdites formules, [% S], [% Cu], [% Ni], [% Sn], [% Sb] et [% Co] représentent la teneur (% en masse) en S, Cu, Ni, Sn, Sb et Co, respectivement, dans la composition de constituants.
(JA) 本発明は、優れた耐硫酸露点腐食性と製造性とを同時に実現するとともに、曲げ性や耐疲労性にも優れる耐硫酸露点腐食鋼を提供することを目的とする。 本発明は、所定の成分組成を有し、該成分組成におけるS、Cu、SnおよびSbの含有量が以下の(1)式、Cu、Ni、Sn、SbおよびCoの含有量が以下の(2)式の関係をそれぞれ満足する耐硫酸露点腐食鋼に関する。 0.50≦[%Cu]/(10×[%S]+[%Sn]+[%Sb])≦5.00・・・(1) 0.50≦([%Ni]+5×[%Co])/([%Cu]+[%Sb]+10×[%Sn])≦2.50 ・・・(2) ここで、[%S]、[%Cu]、[%Ni]、[%Sn]、[%Sb]および[%Co]はそれぞれ、成分組成におけるS、Cu、Ni、Sn、SbおよびCoの含有量(質量%)である。
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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, 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
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)