The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2003
Filed:
Aug. 20, 2001
Applicant:
Inventors:
Ludger Gehringhoff, Paderborn, DE;
Hans-Jürgen Knaup, Bad Lippspringe, DE;
Assignee:
Benteler AG, Paderborn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 3/800 ; C22C 3/818 ;
U.S. Cl.
CPC ...
C22C 3/800 ; C22C 3/818 ;
Abstract
A B-column comprises a component of a car body for a motor vehicle. The B-column constitutes a longitudinal steel profile. The invention provides that the longitudinal profile has a first longitudinal portion comprised of a martensitic material structure and a strength of more than 1400 N/mm and has a second longitudinal portion of higher ductility with a predominantly ferritic-perlitic material structure and a strength of below 850 N/mm . The lower longitudinal portion is wider then the upper longitudinal portion and has an elongation at rupture which is below 25%.