STEEL BASE MATERIAL HAVING BRASS COATING LAYER FOR ADHERING RUBBER AND ITS PRODUCTION

摘要

Steel substrate with brass covering layer to enhance adhesion to rubber particularly in humid atmosphere above ambient temperature wherein said covering layer has at its surface a (Cu/Cu+Zn)-ratio of not more than 0.2 the respective Cu and Zn contents being considered in at.%. In addition the content of carbon and inorganic impurities in the brass surface layer is low. A method for producing said brass covered substrate comprises the steps of shortly heating a normal brass covered substrate at between 250 DEG and 350 DEG C in a vacuum atmosphere.