【国外标准】 Standard Specification for Drawing Alloy Steel, Sheet and Strip, Hot-Rolled and Cold-Rolled

This specification covers hot-rolled and cold-rolled drawing alloy steel sheets and strips for applications involving severe cold plastic deformation such as deep drawn or severely formed parts. Materials may be furnished in several conditions, heat treatments, surface finishes, and edges, as specified herein, in coils or cut lengths. Unless otherwise specified, specimens shall be heat treated by spheroidize annealing. Materials shall be tested and conform to specified values of chemical composition, metallurgical structure or microstructure, tensile strength, elongation, and Rockwell hardness. Unless otherwise specified, hot-rolled specimens shall be surface finished by descaling and oiling, and furnished with mill edge. While, cold-rolled specimens shall have a commercial dull matte surface finish and be oiled, and furnished with cut edge for sheets, and No. 3 edge for strips.1.1 This specification covers hot-rolled and cold-rolled drawing alloy-steel sheet and strip. Material of this quality is produced principally for applications involving severe cold plastic deformation such as deep drawn or severely formed parts. This steel is produced by a closely controlled steel-making practice designed to assure internal soundness, relative uniformity of chemical composition, and freedom from injurious imperfections.1.2 The material covered by this specification may be furnished in several conditions, heat treatments, surface finishes, and edges, as specified herein, in coils or cut lengths.1.3 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.