This SAE Recommended Practice covers the mechanical and chemical requirements of the best quality hard drawn carbon steel spring wire used for the manufacture of engine valve springs and other springs requiring high fatigue properties. It also covers the basic material and processing requirements of springs fabricated from this wire.

This SAE Recommended Practice covers the physical and chemical requirements of oil- tempered carbon-steel valve spring quality wire used for the manufacture of engine valve springs and other springs requiring high-fatigue properties. This document also covers the processing requirements of springs fabricated from this wire.

This specification covers a carbon steel in the form of wire supplied as coils of wire or as finished springs.

This specification covers a carbon steel in the form of wire supplied as coils of wire or as finished springs.

This SAE Recommended Practice covers the mechanical and chemical requirements of special quality high tensile, hard-drawn carbon-steel spring wire with restricted size tolerances. This material is used where such restricted dimensional requirements are necessary for the manufacture of highly stressed mechanical springs and wire forms. It is generally employed for applications subject to static loads or infrequent stress repetitions. This document also covers the processing requirements of springs and forms fabricated from this wire.