steel wire form has high mechanical characteristics resistant to hydrogen embrittlement

This form of yarn, quality NACE, low alloy carbon steel for use in oil production offshore industry, is characterized in that it has the following chemical composition, expressed in weight percentages of the mass total, the remainder being iron and unavoidable impurities from the preparation of the metal in liquid condition: 0.75 pearlitic microstructure and mechanical transformation operation cold (drawing and / or lamination) with an overall hardening rate only slightly above 50%, to give it its final shape, and in that it is then subjected to heat treatment giving it the restoration desired mechanical characteristics.