EP 1335035 B1 20050420 - Low-carbon free cutting steel
Title (en)
Low-carbon free cutting steel
Title (de)
Automatenstahl mit niedrigem Kohlenstoffgehalt
Title (fr)
Acier de décolletage à bas carbone
Publication
Application
Priority
JP 2002026368 A 20020204
Abstract (en)
[origin: EP1335035A1] The invention provides a low-carbon resulfurized free cutting steel containing no lead and at least comparable in machinability to the conventional leaded free cutting steels. The steel consists of, by mass percent, C: 0.05 - 0.19 %, Mn: 0.4 - 2.0 %, S: 0.21 - 1.0 %, Ti: 0.03 - 0.30 %, Si: not more than 1.0 %, P: 0.001 - 0.3 %, Al: not more than 0.2 %, O (oxygen): 0.0010 - 0.050 % and N: 0.0001 - 0.0200 %, with the balance being Fe and impurities, the contents of Ti and S satisfying the relation (1) given below and the atomic ratio between Mn and S satisfying the relation (2) given below, and the steel containing MnS with Ti sulfide and/or Ti carbosulfide included therein: <DF NUM="(1)">Ti (% by mass)/S (% by mass) < 1 </DF> <DF NUM="(2).">Mn/S >/= 1 </DF> The steel may further contain, in addition to the above components, one or more elements selected from the group consisting of Se, Te, Bi, Sn, Zr, Ca, Mg and rare earth elements and/or from the group consisting of Cu, Ni, Cr, Mo, V and Nb.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/14 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C22C 38/00 (2013.01 - KR); C22C 38/04 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US); C21D 7/13 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1335035 A1 20030813; EP 1335035 B1 20050420; CN 1210432 C 20050713; CN 1436875 A 20030820; DE 60300506 D1 20050525; DE 60300506 T2 20060223; JP 2003226933 A 20030815; JP 3758581 B2 20060322; KR 100513992 B1 20050909; KR 20030066448 A 20030809; TW 200302872 A 20030816; TW I228149 B 20050221; US 2003152476 A1 20030814
DOCDB simple family (application)
EP 03250686 A 20030203; CN 03103453 A 20030130; DE 60300506 T 20030203; JP 2002026368 A 20020204; KR 20030006838 A 20030204; TW 92102006 A 20030129; US 35741903 A 20030204