SAE J 316:1998-06-01

This SAE Recommended Practice covers the mechanical, chemical, and dimensional requirements of oil-tempered carbon-steel spring wire used in the automotive and related industries. It is especially intended for the manufacture of mechanical springs and wire forms which are not subjected to a large number of high stress cycles. Class I wire is intended for moderate stress and Class II for higher stress level applications. This document also covers the processing requirements for springs fabricated from this wire.