Effect of Natural Aging on Mechanical Properties of Copper Clad Steel Brake Pipes
Abstract
Copper-clad steel tubes are the basic components of the hydraulic systems of many products, especially automobile brake systems. The mechanical properties of copper-clad steel tubes produced for use in the automotive industry are determined by acceptance criteria. After production, they are expected to maintain these properties during the stock and transfer process. However, metallic materials may undergo natural aging when kept at room temperature for a long time. In this study, the changes in the mechanical properties of copper-clad steel tubes of different diameters (ø4.75, ø6, ø8 mm) were investigated by keeping them at room temperature for 1 year. The mechanical properties were characterized by tensile and blasting tests, and the changes in mechanical properties were investigated by examining the microstructure using an optical microscope. Results showed that the there is no significant microstructural changes while there was a slight decrease in the tensile properties of brake pipes.
Keywords
Copper-clad steel tube, mechanical properties, microstructure, natural aging.
Supporting Institution
Bant Boru A.Ş. and Karabük University Iron and Steel Institute
Thanks
The authors would like to thank Bant Boru A.Ş. and Karabük University Iron and Steel Institute for their support of this study.
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