EP 1918408 A2 20080507 - Martensitic free cutting stainless steel
Title (en)
Martensitic free cutting stainless steel
Title (de)
Martensitischer rostfreier Automatenstahl
Title (fr)
Acier de décolletage inoxydable martensitique
Publication
Application
Priority
- JP 2006271360 A 20061003
- JP 2007174797 A 20070703
Abstract (en)
The present invention relates to a martensitic free cutting stainless steel, comprising, by weight percent: C: 0.10 to 1.20 %, Si: 0.10 to 2.00 %, Mn: 0.80 to 2.00 %, S: 0.10 to 0.30 %, Cr: 10.5 to 18.0 %, Pb: 0.03 to 0.30 %, Te: 0.01 to 0.10 %, B: 0.0005 to 0.010 %, and O: 0.005 to 0.030 %, with the remainder being substantially Fe and inevitable impurities; contents of P and N are: P: 0.005 to 0.10 %, and N: ¤ 0.050 %; wherein respective formulae of 3.0 ¤ [Mn]/[S] ¤ 15.0, 0.10 ¤ [Te]/[S], and 10 ¤ [S]/[O] ¤ 40 are satisfied; and wherein a sulfide having a circle equivalent diameter of 2.0 µm or more and an aspect ratio of 10 or less is present in a total amount of 0.50 to 10 % by area ratio.
IPC 8 full level
C22C 38/00 (2006.01); C21D 6/00 (2006.01); C21D 9/18 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01); C22C 38/32 (2006.01); C22C 38/34 (2006.01); C22C 38/38 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/54 (2006.01); C22C 38/58 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP US)
C21D 6/002 (2013.01 - EP US); C21D 9/18 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/20 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/32 (2013.01 - EP US); C22C 38/34 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/54 (2013.01 - EP US); C22C 38/58 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR SE
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1918408 A2 20080507; EP 1918408 A3 20101027; EP 1918408 B1 20141126; CN 101158011 A 20080409; CN 101158011 B 20120926; JP 2008111186 A 20080515; JP 5135918 B2 20130206; US 2008089804 A1 20080417
DOCDB simple family (application)
EP 07019360 A 20071002; CN 200710164219 A 20070930; JP 2007174797 A 20070703; US 90552207 A 20071002