1.1 本规范涵盖冷加工钢丝和热加工盘条的自由加工不锈钢。线材是主要用于制造线材的半成品。线材包括圆形、正方形、六边形和特殊形状的自由加工不锈钢，特别设计用于最佳可加工性以及一般腐蚀和高温环境。 1.2 包括以下合金: 1.2.1 奥氏体合金:UNS编号S20300、S30300、S20310、S30323和S30345； 1.2.2 马氏体合金:UNS编号S41600、S41610和S41623； 和 1.2.3 铁素体合金:UNS编号S18200、S18235、S41603、S43020和S43023。 注1: 对于非自由加工应用的导线，请参见规范 A580/A580米 . 注2: 对于自由加工不锈钢棒，请参见规范 A582/A582米 . 1.3 以英寸-磅单位或SI（公制）单位表示的数值应单独视为标准值；在文本和表格中，SI单位显示在[括号]中。每个系统中规定的值不是精确的等效值；因此，每个系统必须独立使用。 将两个系统的值合并可能导致不符合规范。 1.4 除非订单规定了适用的“M”规格名称，否则材料应以英寸磅单位提供。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers free-machining stainless steels of cold-finished wire and hot-finished wire rods in coils. Wire rods are a semi-finished product primarily for the manufacture of wire. Wire includes rounds, squares, hexagons, and special shapes in free-machining stainless steels designed especially for optimum machinability and for general corrosion and high-temperature service. 1.2 The following alloys are covered: 1.2.1 Austenitic alloys: UNS numbers S20300, S30300, S30310, S30323, and S30345; 1.2.2 Martensitic alloys: UNS numbers S41600, S41610, and S41623; and 1.2.3 Ferritic alloys: UNS numbers S18200, S18235, S41603, S43020, and S43023. Note 1: For wire other than for free-machining applications, see Specification A580/A580M . Note 2: For Free-Machining Stainless Steel Bars, see Specification A582/A582M . 1.3 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard; within the text and tables, the SI units are shown in [brackets]. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. 1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.