Global Patent Index - EP 1728884 A1

EP 1728884 A1 20061206 - Steel for a plastic molding die

Title (en)

Steel for a plastic molding die

Title (de)

Stahl für Kunststofformen

Title (fr)

Acier pour moule matière plastique

Publication

EP 1728884 A1 20061206 (EN)

Application

EP 06011250 A 20060531

Priority

  • JP 2005162823 A 20050602
  • JP 2006094094 A 20060330

Abstract (en)

To provide a steel for plastic molding die which possesses enough hardness, wear resistance and corrosion resistance, and is excellent in high-precision processability and mirror polishing properties. The steel for a plastic molding die contains not more than 0.80 wt% C, not less than 0.01 wt% and less than 1.40 wt% Si, not less than 0.05 wt% and not more than 2.0 wt% Mn, not less than 0.005 wt% and not more than 1.00 wt% Ni, not less than 13.0 wt% and not more than 20.0 wt% Cr, not less than 0.20 wt% and not more than 4.0 wt% Mo + 1/2 W, not less than 0.01 wt% and not more than 1.00 wt% V, not less than 0.36 wt% and not more than 0.80 wt% N, not more than 0.02 wt% O, not more than 0.80 wt% A1, and the remainder substantially including Fe and unavoidable impurities.

IPC 8 full level

C22C 38/00 (2006.01)

CPC (source: EP KR US)

C21D 1/18 (2013.01 - EP US); C21D 6/002 (2013.01 - EP US); C21D 8/06 (2013.01 - EP US); C22C 1/00 (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 38/06 (2013.01 - EP US); C22C 38/18 (2013.01 - KR); C22C 38/44 (2013.01 - EP US); C22C 38/46 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US)

Citation (applicant)

JP 3438121 B2 20030818

Citation (search report)

Designated contracting state (EPC)

AT DE SE

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1728884 A1 20061206; JP 2007009321 A 20070118; KR 20060125467 A 20061206; TW 200643190 A 20061216; US 2006285992 A1 20061221

DOCDB simple family (application)

EP 06011250 A 20060531; JP 2006094094 A 20060330; KR 20060041565 A 20060509; TW 95119539 A 20060602; US 44446006 A 20060601