Global Patent Index - EP 4174207 A1

EP 4174207 A1 20230503 - FLAT STEEL PRODUCT HAVING IMPROVED PROCESSING PROPERTIES

Title (en)

FLAT STEEL PRODUCT HAVING IMPROVED PROCESSING PROPERTIES

Title (de)

STAHLFLACHPRODUKT MIT VERBESSERTEN VERARBEITUNGSEIGENSCHAFTEN

Title (fr)

PRODUIT PLAT EN ACIER AYANT DES PROPRIÉTÉS DE TRAITEMENT AMÉLIORÉES

Publication

EP 4174207 A1 20230503 (DE)

Application

EP 21205912 A 20211102

Priority

EP 21205912 A 20211102

Abstract (en)

[origin: US2023136262A1] A flat steel product for production of a sheet metal component by hot forming includes a steel substrate consisting of a steel including 0.1-3% by weight of Mn and optionally up to 0.01% by weight of B, an aluminium-based coating disposed on at least one side of the steel substrate. A coating here has an applied layer weight of 15-30 g/m2. In addition, the coating has an Al base layer consisting of 1.0-15% by weight of Si, optionally 2-4% by weight of Fe, 0.1-5.0% by weight of alkali metals or alkaline earth metals, and optional further constituents, the contents of which are limited to a total of not more than 2.0% by weight, and aluminium as the balance.

Abstract (de)

Die Erfindung betrifft ein Stahlflachprodukt zur Herstellung eines Blechbauteils durch Warmumformen, aufweisenda) ein Stahlsubstrat, das aus einem Stahl, der 0,1-3 Gew.-% Mn und optional bis zu 0,01 Gew.-% B aufweist, besteht undb) einen auf mindestens einer Seite des Stahlsubstrats angeordneten Überzugs auf Aluminium-Basis.Hierbei weist der Überzug ein Auflagengewicht von 15-30 g/m^2 auf. Weiterhin weist der Überzug eine Al-Basisschicht auf, die aus 1,0 ― 15 Gew.-% Si, optional 2-4 Gew.-% Fe, 0,1 - 5,0 Gew.-% Alkali- oder Erdalkalimetalle, und optionalen weiteren Bestandteilen, deren Gehalte in Summe auf höchstens 2,0 Gew.-% beschränkt sind, und als Rest Aluminium besteht.

IPC 8 full level

C23C 2/12 (2006.01); B21D 22/00 (2006.01); C21D 1/18 (2006.01); C21D 1/673 (2006.01); C21D 1/76 (2006.01); C21D 7/13 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 21/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/14 (2006.01); C23C 2/02 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01); C23C 30/00 (2006.01)

CPC (source: EP US)

B21D 22/022 (2013.01 - US); C21D 1/18 (2013.01 - EP); C21D 1/673 (2013.01 - EP); C21D 1/76 (2013.01 - EP); C21D 7/13 (2013.01 - EP); C21D 8/0226 (2013.01 - EP US); C21D 8/0236 (2013.01 - EP US); C21D 8/0242 (2013.01 - EP); C21D 8/0273 (2013.01 - EP US); C21D 8/0278 (2013.01 - EP); C21D 9/46 (2013.01 - EP US); C22C 21/02 (2013.01 - EP US); C22C 38/002 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP); C22C 38/14 (2013.01 - EP); C23C 2/022 (2022.08 - EP); C23C 2/12 (2013.01 - EP US); C23C 2/28 (2013.01 - EP); C23C 2/40 (2013.01 - EP US); C23C 30/00 (2013.01 - EP); C21D 2211/008 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

Citation (third parties)

Third party : Anonymous

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Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4174207 A1 20230503; US 11891676 B2 20240206; US 12098441 B2 20240924; US 2023136262 A1 20230504; US 2024117458 A1 20240411

DOCDB simple family (application)

EP 21205912 A 20211102; US 202217978246 A 20221101; US 202318543606 A 20231218