EP 3950969 A4 20230419 - FERRITIC STAINLESS STEEL SHEET FOR AUTOMOBILE BRAKE DISK ROTORS, AUTOMOBILE BRAKE DISK ROTOR, AND HOT-STAMPED ARTICLE FOR AUTOMOBILE BRAKE DISK ROTORS
Title (en)
FERRITIC STAINLESS STEEL SHEET FOR AUTOMOBILE BRAKE DISK ROTORS, AUTOMOBILE BRAKE DISK ROTOR, AND HOT-STAMPED ARTICLE FOR AUTOMOBILE BRAKE DISK ROTORS
Title (de)
FERRITISCHES ROSTFREIES STAHLBLECH FÜR KRAFTFAHRZEUGBREMSSCHEIBENROTOREN, KRAFTFAHRZEUG-BREMSSCHEIBENROTOR UND WARMGESTANZTER GEGENSTAND FÜR KRAFTFAHRZEUGBREMSSCHEIBENROTOREN
Title (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
Publication
Application
Priority
- JP 2019063177 A 20190328
- JP 2020010947 W 20200312
Abstract (en)
[origin: EP3950969A1] A ferritic stainless steel sheet for an automobile brake disc rotor includes: 0.001 to 0.05 mass% of C; 0.001 to 0.05 mass% of N; 0.3 to 4.0 mass% of Si; 0.01 to 2.0 mass% of Mn; 0.01 to 0.05 mass% of P; 0.0001 to 0.02 mass% of S; 10 to 20 mass% of Cr; one or both of 0.001 to 0.5 mass% of Ti and 0.01 to 0.8 mass% of Nb; and a balance consisting of Fe and impurities. After a hot stamping treatment, a crystal grain size is in a range from 100 to 200 µm, and precipitates each having a grain size of 500 nm or less are present at a density of 0.01 to 20 pieces per square micrometer.
IPC 8 full level
C21D 8/02 (2006.01); C21D 1/18 (2006.01); C21D 9/00 (2006.01); C22C 38/00 (2006.01); C22C 38/38 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
B21D 22/022 (2013.01 - KR); B21D 53/88 (2013.01 - KR); C21D 1/19 (2013.01 - EP); C21D 6/002 (2013.01 - EP); C21D 6/004 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/007 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 6/02 (2013.01 - EP); C21D 7/13 (2013.01 - EP); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP US); C21D 8/0247 (2013.01 - EP); C21D 8/0263 (2013.01 - US); C21D 8/0273 (2013.01 - EP); C21D 9/46 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/004 (2013.01 - EP); C22C 38/005 (2013.01 - EP US); C22C 38/008 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/20 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/24 (2013.01 - EP US); C22C 38/26 (2013.01 - EP); C22C 38/28 (2013.01 - EP KR); C22C 38/30 (2013.01 - EP US); C22C 38/32 (2013.01 - EP US); C22C 38/34 (2013.01 - EP KR); C22C 38/38 (2013.01 - EP KR); C22C 38/48 (2013.01 - EP US); C22C 38/50 (2013.01 - EP US); C22C 38/58 (2013.01 - KR); C22C 38/60 (2013.01 - EP); C21D 2211/004 (2013.01 - EP); C21D 2211/005 (2013.01 - EP US)
Citation (search report)
- [XI] EP 2980251 A1 20160203 - NIPPON STEEL & SUMIKIN SST [JP]
- [A] JP 2017095789 A 20170601 - NIPPON STEEL & SUMIKIN SST
- [A] JP 2014145097 A 20140814 - NIPPON STEEL & SUMIKIN SST
- [A] EP 2947170 A1 20151125 - JFE STEEL CORP [JP]
- [A] JP 2011225948 A 20111110 - JFE STEEL CORP
- [A] US 2017107593 A1 20170420 - HAMADA JUNICHI [JP], et al
- See references of WO 2020195915A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3950969 A1 20220209; EP 3950969 A4 20230419; CA 3133206 A1 20201001; CA 3133206 C 20230124; CN 113661261 A 20211116; CN 113661261 B 20230919; JP 7179966 B2 20221129; JP WO2020195915 A1 20211223; KR 102569352 B1 20230822; KR 20210129140 A 20211027; MX 2021011538 A 20211022; US 2022177993 A1 20220609; WO 2020195915 A1 20201001
DOCDB simple family (application)
EP 20778917 A 20200312; CA 3133206 A 20200312; CN 202080025398 A 20200312; JP 2020010947 W 20200312; JP 2021509036 A 20200312; KR 20217029951 A 20200312; MX 2021011538 A 20200312; US 202017598613 A 20200312