AASHTO M 204M/M 204-19

AASHTO M 204M/M 204-19 covers two types of stress-relieved, round, high-carbon steel wire commonly used in prestressed linear concrete construction, as follows:Type BA wire is used for applications in which cold-end deformation is used for anchoring purposes (Button Anchorage), andType WA wire is used for application in which the ends are anchored by wedges, and no cold-end deformation of the wire is involved (Wedge Anchorage).A supplementary requirement is provided for use where low-relaxation wire and relaxation testing for that product is required by the purchaser.