This is a performance requirement qualification specification intended to give reasonable flexibility in the initial engineering selection of materials when fabricated by currently accepted manufacturing processes. It is not intended to be used for quality control purposes.
This SAE Recommended Practice covers the tubing intended primarily for use as hydraulic brake lines on motor vehicles. It covers materials, manufacturing processes, and general properties required to meet the wide range of service encountered in automotive applications. To meet this need, it must be formed, assembled, handled, and installed in accordance with sound engineering and manufacturing practices. This specification covers only the basic tubing and does not include attachments such as protective armor or end fittings.