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1. WO2020111857 - CHROMIUM-MOLYBDENUM STEEL PLATE HAVING EXCELLENT CREEP STRENGTH AND METHOD FOR MANUFACTURING SAME

Publication Number WO/2020/111857
Publication Date 04.06.2020
International Application No. PCT/KR2019/016694
International Filing Date 29.11.2019
IPC
C22C 38/44 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
44with molybdenum or tungsten
C22C 38/46 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
46with vanadium
C22C 38/42 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
42with copper
C22C 38/48 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
48with niobium or tantalum
C22C 38/50 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
50with titanium or zirconium
C22C 38/54 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
54with boron
CPC
C21D 8/02
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
02containing silicon
C22C 38/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
04containing manganese
C22C 38/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
06containing aluminium
C22C 38/42
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
42with copper
Applicants
  • 주식회사 포스코 POSCO [KR]/[KR]
Inventors
  • 성현제 SUNG, Hyun-Je
  • 김대우 KIM, Dae-Woo
Agents
  • 특허법인 씨엔에스 C&S PATENT AND LAW OFFICE
Priority Data
10-2018-015081929.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) CHROMIUM-MOLYBDENUM STEEL PLATE HAVING EXCELLENT CREEP STRENGTH AND METHOD FOR MANUFACTURING SAME
(FR) TÔLE D'ACIER CHROME-MOLYBDÈNE PRÉSENTANT UNE EXCELLENTE RÉSISTANCE AU FLUAGE ET SON PROCÉDÉ DE FABRICATION
(KO) 크리프 강도가 우수한 크롬-몰리브덴 강판 및 그 제조방법
Abstract
(EN)
Provided are a chromium-molybdenum steel plate having excellent creep strength and a method for manufacturing same. The chromium-molybdenum steel plate of the present invention comprises, by weight%, 0.11-0.15% of C, 0.10% or less of Si (exclusive of 0%), 0.3-0.6% of Mn, 0.010% or less of S (exclusive of 0%), 0.015% or less of P (exclusive of 0%), 2.0-2.5% of Cr, 0.9-1.1% of Mo, 0.65-1.0% of V, 0.25% or less of Ni (exclusive of 0%), 0.20% or less of Cu (exclusive of 0%), 0.07% or less of Nb (exclusive of 0%), 0.03% or less of Ti (exclusive of 0%), 0.015% or less of N (exclusive of 0%), 0.025% or less of Al (exclusive of 0%), 0.002% or less of B (exclusive of 0%), and the remainder of Fe and unavoidable impurities.
(FR)
La présente invention concerne une tôle d'acier chrome-molybdène présentant une excellente résistance au fluage et un procédé pour la fabriquer. La tôle d'acier chrome-molybdène de la présente invention comprend, en % en poids, 0,11 à 0,15 % de C, 0,10 % de Si ou moins (en excluant 0 %), 0,3 à 0,6 % de Mn, 0,010 % de S ou moins (en excluant 0 %), 0,015 % de P ou moins (en excluant 0 %), 2,0 à 2,5 % de Cr, 0,9 à 1,1 % de Mo, 0,65 à 1,0 % de V, 0,25 % de Ni ou moins (en excluant 0 %), 0,20 % de Cu ou moins (en excluant 0 %), 0,07 % de Nb ou moins (en excluant 0 %), 0,03 % de Ti ou moins (en excluant 0 %), 0,015 % de N ou moins (en excluant 0 %), 0,025 % d'Al ou moins (en excluant 0 %), 0,002 % de B ou moins (en excluant 0 %), le reste étant Fe et des impuretés inévitables.
(KO)
크리프 강도가 우수한 크롬-몰리브덴 강판 및 그 제조방법이 제공된다. 본 발명의 크롬-몰리브덴 강판은, 중량%로, C: 0.11~0.15%, Si: 0.10% 이하 (0%는 제외함), Mn: 0.3~0.6%, S: 0.010% 이하 (0%는 제외함), P: 0.015% 이하 (0%는 제외함), Cr: 2.0~2.5%, Mo: 0.9~1.1%, V: 0.65~1.0%, Ni: 0.25% 이하 (0%는 제외함), Cu: 0.20% 이하 (0%는 제외함), Nb: 0.07% 이하 (0%는 제외함), Ti: 0.03% 이하 (0%는 제외함), N: 0.015% 이하 (0%는 제외함), Al: 0.025% 이하 (0%는 제외함), B: 0.002% 이하 (0%는 제외함), 잔부 Fe 및 불가피한 불순물을 포함한다.
Also published as
Latest bibliographic data on file with the International Bureau