Global Patent Index - EP 1255873 A1

EP 1255873 A1 20021113 - MARAGING TYPE SPRING STEEL

Title (en)

MARAGING TYPE SPRING STEEL

Title (de)

FEDERSTAHL VOM MARAGING-TYP

Title (fr)

ACIER A RESSORTS DE TYPE ACIER VIEILLI THERMIQUEMENT

Publication

EP 1255873 A1 20021113 (DE)

Application

EP 01901158 A 20010117

Priority

  • DE 10001650 A 20000117
  • EP 0100498 W 20010117

Abstract (en)

[origin: WO0153556A1] The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting of Fe, whose martensite temperature M>S< >/= 130 DEG C and which has a ferrite content c>ferrite< of less than 3 %.

IPC 1-7

C22C 38/50; C22C 38/52; C22C 38/44; C21D 6/02

IPC 8 full level

C21D 6/00 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01); C22C 38/52 (2006.01); C21D 9/02 (2006.01)

CPC (source: EP US)

C21D 6/004 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/50 (2013.01 - EP US); C22C 38/52 (2013.01 - EP US); C21D 9/02 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US); Y10S 148/909 (2013.01 - EP US)

Citation (search report)

See references of WO 0153556A1

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 0153556 A1 20010726; DE 10001650 A1 20010726; DE 50110248 D1 20060803; EP 1255873 A1 20021113; EP 1255873 B1 20060621; EP 1255873 B9 20071010; US 2003091458 A1 20030515; US 6793745 B2 20040921

DOCDB simple family (application)

EP 0100498 W 20010117; DE 10001650 A 20000117; DE 50110248 T 20010117; EP 01901158 A 20010117; US 16822802 A 20020916