本SAE推荐规程涵盖了特殊质量、高强度、冷拔碳钢弹簧钢丝的机械和化学要求，尺寸公差有限。该材料用于制造高应力机械弹簧和金属丝模板所需的受限尺寸要求。它通常用于承受静载荷或不经常重复应力的应用。本文件还涵盖了用这种金属丝制造的弹簧和模板的加工要求。

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.