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1. WO2020195915 - FERRITIC STAINLESS STEEL SHEET FOR AUTOMOBILE BRAKE DISK ROTORS, AUTOMOBILE BRAKE DISK ROTOR, AND HOT-STAMPED ARTICLE FOR AUTOMOBILE BRAKE DISK ROTORS

Publication Number WO/2020/195915
Publication Date 01.10.2020
International Application No. PCT/JP2020/010947
International Filing Date 12.03.2020
IPC
C21D 8/02 2006.01
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
C21D 9/00 2006.01
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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C22C 38/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/38 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
38with more than 1.5% by weight of manganese
C22C 38/60 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
60containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
C21D 1/18 2006.01
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
Applicants
  • 日鉄ステンレス株式会社 NIPPON STEEL STAINLESS STEEL CORPORATION [JP]/[JP]
Inventors
  • 吉澤 俊希 YOSHIZAWA Toshiki
  • 松橋 透 MATSUHASHI Tooru
Agents
  • 特許業務法人樹之下知的財産事務所 KINOSHITA & ASSOCIATES
Priority Data
2019-06317728.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FERRITIC STAINLESS STEEL SHEET FOR AUTOMOBILE BRAKE DISK ROTORS, AUTOMOBILE BRAKE DISK ROTOR, AND HOT-STAMPED ARTICLE FOR AUTOMOBILE BRAKE DISK ROTORS
(FR) TÔLE D'ACIER INOXYDABLE FERRITIQUE DE DISQUES DE FREIN D'AUTOMOBILE, DISQUE DE FREIN D'AUTOMOBILE, ET ARTICLE ESTAMPÉ À CHAUD DE DISQUES DE FREIN D'AUTOMOBILE
(JA) 自動車ブレーキディスクローター用フェライト系ステンレス鋼板、自動車ブレーキディスクローター及び自動車ブレーキディスクローター用ホットスタンプ加工品
Abstract
(EN)
A ferritic stainless steel sheet for automobile brake disk rotors, which contains, in % by mass, 0.001 to 0.05% of C, 0.001 to 0.05% of N, 0.3 to 4.0% of Si, 0.01 to 2.0% of Mn, 0.01 to 0.05% of P, 0.0001 to 0.02% of S and 10 to 20% of Cr, and also contains at least one of 0.001 to 0.5% of Ti and 0.01 to 0.8% of Nb, with the remainder made up by Fe and impurities. After hot-stamping, the crystal grain diameters are 100 to 200 μm and precipitates each having a grain diameter of 500 nm or less are present at a density of 0.01 to 20 grains/μm2.
(FR)
L'invention concerne une tôle d'acier inoxydable ferritique de disques de frein d'automobile, contenant, en % en masse, de 0,001 à 0,05 % de C, de 0,001 à 0,05 % de N, de 0,3 à 4,0 % de Si, de 0,01 à 2,0 % de Mn, de 0,01 à 0,05 % de P, de 0,0001 à 0,02 % de S et de 10 à 20 % de Cr, et contenant également de 0,001 à 0,5 % de Ti et/ou de 0,01 à 0,8 % de Nb, le reste étant du Fe et des impuretés. Après l'estampage à chaud, les diamètres de grain cristallin sont de 100 à 200 µm et des précipités ayant individuellement un diamètre de grain inférieur ou égal à 500 nm sont présents à une densité de 0,01 à 20 grains/µm2.
(JA)
質量%にて、C:0.001~0.05%、N:0.001~0.05%、Si:0.3~4.0%、Mn:0.01~2.0%、P:0.01~0.05%、S:0.0001~0.02%、Cr:10~20%、を含有し、さらにTi:0.001~0.5%、Nb:0.01~0.8%を1種または2種以上を含有し、残部がFeおよび不純物からなる自動車ブレーキディスクローター用フェライト系ステンレス鋼板。ホットスタンプ処理後、結晶粒径が100~200μmであり、粒径500nm以下の析出物が0.01~20個/μmの密度で存在する。
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