Global Patent Index - EP 0429651 B1

EP 0429651 B1 19940302 - IRON BASE, SOFT MAGNETIC STEEL MATERIAL.

Title (en)

IRON BASE, SOFT MAGNETIC STEEL MATERIAL.

Title (de)

WEICHES MAGNETISCHES STAHLMATERIAL MIT EISENBASIS.

Title (fr)

MATERIAU EN ACIER MAGNETIQUE DOUX A BASE DE FER.

Publication

EP 0429651 B1 19940302

Application

EP 90900342 A 19891208

Priority

JP 15502689 A 19890617

Abstract (en)

[origin: EP0429651A1] This invention relates to an iron base, soft magnetic steel material which has high permeability and moreover, can be produced economically. The steel material of this invention uses a pure iron type component as a base and contains 0.5 to 2.5 % of Al and, whenever necessary, 0.005 to 1.0 % of Ti. Its ferrite crystal grain size is at least 0.5 mm, its magnetic flux density is at least 11,000 G at 0.5 Oe under the state where a lattice strain is removed sufficiently, its magnetic flux density is at least 15,500 G at 25 Oe and its coercive force is up to 0.4 Oe.

IPC 1-7

H01F 1/16; C22C 38/00

IPC 8 full level

C22C 38/00 (2006.01); C21D 8/12 (2006.01); C22C 38/06 (2006.01); C22C 38/14 (2006.01); H01F 1/147 (2006.01); H01F 1/16 (2006.01)

CPC (source: EP KR)

C22C 38/06 (2013.01 - EP); H01F 1/147 (2013.01 - EP); H01F 1/16 (2013.01 - KR)

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0429651 A1 19910605; EP 0429651 A4 19911204; EP 0429651 B1 19940302; CA 2020464 A1 19901218; CN 1026597 C 19941116; CN 1048237 A 19910102; DE 68913544 D1 19940407; DE 68913544 T2 19940721; JP 2679258 B2 19971119; JP H0320447 A 19910129; KR 920700458 A 19920219; KR 970004566 B1 19970329; WO 9016076 A1 19901227

DOCDB simple family (application)

EP 90900342 A 19891208; CA 2020464 A 19900618; CN 89109231 A 19891208; DE 68913544 T 19891208; JP 15502689 A 19890617; JP 8901232 W 19891208; KR 910700178 A 19910213