Patent ID: 8859653

Claim:
A rubber-steel cord composite characterized in that a steel cord which has a brass-plated layer on a peripheral surface thereof and in which a content of phosphorus contained in the form of oxide in a wire surface layer region extending from a surface of the brass-plated layer up to a depth of 5 nm in a wire radial direction toward the inside is 1.5 atomic % or less is adjacent to a rubber composition containing a rubber component comprising 50% by mass or more of natural rubber, 0.3 to 10 parts by mass of sulfur, 0.03 to 3 parts by mass of a cobalt salt of organic acid in terms of a cobalt amount and 0.1 to 10 parts by mass of a sulfenamide base vulcanization accelerator represented by the following Formula (I) based on 100 parts by mass of the rubber component: wherein R 1 is a branched alkyl group having 3 to 12 carbon atoms; R 2 is a linear alkyl group having 1 to 10 carbon atoms; R 3 to R 6 are a hydrogen atom, a linear alkyl group or alkoxy group having 1 to 4 carbon atoms or a branched alkyl group or alkoxy group having 3 to 4 carbon atoms, and they may be the same or different; x is an integer of 1 or 2, and n is an integer of 0 or 1.