EP 0123054 B1 19870506 - STAINLESS CHROMIUM STEEL AND PROCESS FOR THE MANUFACTURE THEREOF
Title (en)
STAINLESS CHROMIUM STEEL AND PROCESS FOR THE MANUFACTURE THEREOF
Publication
Application
Priority
DE 3310693 A 19830324
Abstract (en)
[origin: US4610734A] The corrosion resistant chromium steel which includes 3 to 45% chromium, 0.2 to 5% nitrogen and other elements. Its structure contains at least 50% ferromagnetic structure components. It is directly magnetizable and, at 400 DEG C., has a yield strength of Rp0.2>400 N/mm2 and, at 600 DEG C., a yield strength of Rp0.2>250 N/mm2. To produce this chromium steel, a prealloy containing at least 50% ferromagnetic structure components is nitrogen enriched under pressure, is then hot worked, then annealed at 800 DEG to 1250 DEG C. and finally cooled to room temperature. A tempering treatment at 450 DEG to 750 DEG C. may follow.
IPC 1-7
IPC 8 full level
C21D 6/00 (2006.01); C21D 8/00 (2006.01); C22C 38/00 (2006.01); C22C 38/18 (2006.01)
CPC (source: EP US)
C21D 8/005 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE FR GB IT LU SE
DOCDB simple family (publication)
US 4610734 A 19860909; AT E27005 T1 19870515; DE 3310693 A1 19841004; DE 3310693 C2 19900308; EP 0123054 A1 19841031; EP 0123054 B1 19870506; JP S59179757 A 19841012
DOCDB simple family (application)
US 70694585 A 19850301; AT 84101992 T 19840225; DE 3310693 A 19830324; EP 84101992 A 19840225; JP 5366684 A 19840322