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:
Sep. 16, 2025
Filed:
Dec. 20, 2019
Benteler Steel/tube Gmbh, Paderborn, DE;
Jozef Balun, Schlangen, DE;
Waldemar Engel, Paderborn, DE;
Niko Große-Heilmann, Harsewinkel, DE;
Michael Kaufmann, Paderborn, DE;
Nathalie Weiß-Borkowski, Büren-Brenken, DE;
Benteler Steel/Tube GmbH, , DE;
Abstract
The present invention relates to a tube product, namely a perforating gun hollow carrier, consisting of a steel alloy with martensitic matrix, characterized in that it has a yield strength Rp0, 2 of at least 900 MPa, and that the steel alloy besides iron and impurities caused by melting has the following alloying elements: C 0.15-0.6%; Si 1.4-2.6%; Cr 2.0-4.0%; Mn 0.15-2.0%; Mo 0.2-0.6%; N<0.015%; and at least one of the alloying elements Nb, V and Ti in sum of ≥0.01% and the tube product has been subjected to a quenching and partitioning heat treatment. Furthermore, the invention relates to a method of manufacturing such a tube product.