Patent ID: 8883306
Filing Date: 2014-11-11
Classification: C21D,D07B,Y10T

Abstract:
1. A steel filament adapted for the reinforcement of elastomer products, said steel filament consisting of iron, a plain carbon composition with a carbon content ranging up to 0.20 percent by weight, a silicon content below 1.0 percent by weight, a manganese content below 2.0 percent by weight, amounts of chromium, copper, nickel, and molybdenum are limited to 0.20 percent by weight, amounts of phosphorus and sulfur are limited to 0.030 percent by weight, and a nitrogen content is limited to 0.015 percent by weight, said plain carbon composition having mainly a ferrite or pearlite matrix, wherein there are no martensite phases or bainite phases, said steel filament being provided with a coating promoting the adhesion with elastomer products or with thermoplastic products, said steel filament being cold drawn until a final diameter of less than 0.60 mm, said steel filament having a final tensile strength of more than 1200 MPa.