Patent · US Active

Micro-alloyed carbon steel as a texture-rolled strip steel, in particular for spring elements

US9290832B2 · kind B2 · utility

3Cited by

1References

12Claims

0Family size

Assignee

C.D. Waelzholz GmbH · DE

Inventors

Hans-Toni Junius · Iserlohn, DE
Heino Buddenberg · Wolfen, DE
Michael Hellmann · Mount Sinai, US
Dirk Wilmes · Iserlohn, DE

Key dates

Filing date	Feb 25, 2010
Grant date	Mar 22, 2016
Priority date	—
Expiry date	Feb 25, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F1/021
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a cold-rolled carbon steel comprising (in % by weight) C 0.63-0.85%, max. 0.40% Si, 0.20-0.90% Mn, max. 0.035% P, max. 0.035% S, max. 0.060% Al, max. 0.40% Cr, 0.003-0.010% N, preferably 0.005-0.008%, and a maximum of 0.12% of at least one micro-alloying element, the remainder being iron and steel production-related pollutants. Possible micro-alloying elements are Ti, Nb, V and optionally Zr. A carbon steel of the type is cold-rolled into texture-rolled strip steel with a high cold reduction degree and can be used in particular as a material for coiling springs or other components having spring properties.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.