EP 4247987 A1 20230927 - STEEL FOR RAILS AND A METHOD OF MANUFACTURING OF A RAIL THEREOF
Title (en)
STEEL FOR RAILS AND A METHOD OF MANUFACTURING OF A RAIL THEREOF
Title (de)
STAHL FÜR SCHIENEN UND VERFAHREN ZUR HERSTELLUNG EINER SCHIENE DAFÜR
Title (fr)
ACIER POUR RAILS ET PROCÉDÉ DE FABRICATION D'UN RAIL ASSOCIÉ
Publication
Application
Priority
IB 2020060815 W 20201117
Abstract (en)
[origin: WO2022106864A1] A steel for rail comprising of the following elements, 0.25% ≦ C ≦ 0.8 %; 1.0% ≦ Mn ≦2.0 %; 1.40% ≦ Si ≦ 2 %; 0.01% ≦ Al ≦ 1 %; 0.8% ≦ Cr ≦ 2%; 0 ≦ P ≦ 0.09%; 0 ≦ S ≦ 0.09%; 0% ≦ N ≦ 0.09%; 0% ≦ Ni ≦ 1%; 0% ≦ Mo ≦ 0.5%; 0% ≦ V≦ 0.2%; 0% ≦ Nb ≦ 0.1%; 0% ≦ Ti ≦ 0.1%; 0% ≦ Cu≦ 0.5%; 0% ≦ B ≦ 0.008%; 0% ≦ Sn≦ 0.1%; 0% ≦ Ce ≦ 0.1%; 0% ≦ Mg ≦ 0.10%; 0% ≦ Zr ≦ 0.10%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel comprising, by area percentage, 2% to 10% of Proeutectoid Ferrite, the balance being made of Pearlite wherein the pearlite having interlamellar spacing from 100nm to 250nm.
IPC 8 full level
C21D 9/04 (2006.01); C21D 11/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/18 (2006.01)
CPC (source: EP KR US)
C21D 1/02 (2013.01 - EP KR); C21D 1/28 (2013.01 - EP KR); C21D 1/84 (2013.01 - US); C21D 6/004 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/005 (2013.01 - EP KR US); C21D 8/0226 (2013.01 - KR); C21D 9/04 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (2013.01 - US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP KR US); C22C 38/20 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/24 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/34 (2013.01 - EP KR US); C22C 38/38 (2013.01 - EP); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP KR US); C22C 38/46 (2013.01 - EP KR US); C22C 38/48 (2013.01 - KR); C22C 38/50 (2013.01 - EP KR US); C22C 38/58 (2013.01 - EP KR); C22C 38/60 (2013.01 - KR); C21D 2211/005 (2013.01 - KR US); C21D 2211/009 (2013.01 - EP KR US)
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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022106864 A1 20220527; CA 3199316 A1 20220527; CN 116472358 A 20230721; EP 4247987 A1 20230927; JP 2023551416 A 20231208; KR 20230078799 A 20230602; MX 2023005664 A 20230526; US 2024002966 A1 20240104; ZA 202304564 B 20240530
DOCDB simple family (application)
IB 2020060815 W 20201117; CA 3199316 A 20201117; CN 202080107175 A 20201117; EP 20815939 A 20201117; JP 2023529030 A 20201117; KR 20237014962 A 20201117; MX 2023005664 A 20201117; US 202018036946 A 20201117; ZA 202304564 A 20230419