AASHTO M 329M/M 329-11（2019）涵盖了切割长度或线圈的不锈钢包层混凝土钢筋，变形且为圆形。对于变形钢筋卷，工业设备的容量限制了可矫直的最大钢筋尺寸。钢筋有三个最低屈服水平:300兆帕[40000磅/平方英寸]、420兆帕[60000磅/平方英寸]和520兆帕[75000磅/平方英寸]，分别指定为300级[40]、420级[60]和520级[75]。热轧普通圆，尺寸小于等于50.8 mm[2 in.]根据本规范规定，销钉、螺旋、结构连接件或支架的直径（以线圈或切割长度为单位）应为300[40]、420[60]和520[75]级。 对于延展性（延伸率和结合力），应采用最接近标称直径的变形钢筋尺寸的试验规定。规定变形和标记的要求不适用。注:小于9.5毫米[&frac38；英寸]的普通圆的重量直径应根据ASTM A 510/A 510M中的尺寸计算。

This specification covers the stainless steel-clad concrete reinforcement bars in cut lengths or coils, deformed and plain round. The standard sizes and dimensions of deformed bars and their number designations shall be those listed in Table 1 [Table 2].Note 1—For coils of deformed bars, the capacity of industrial equipment limits the maximum bar size that can be straightened.Bars are of three minimum yield levels: namely, 300 MPa [40,000 psi], 420 MPa [60,000 psi], and 520 MPa [75,000 psi], designated as Grade 300 [40], Grade 420 [60], and Grade 520 [75], respectively.Hot-rolled plain rounds, in sizes up to and including 50.8 mm [2 in.] in diameter in coils or cut lengths, when specified for dowels, spirals, and structural ties or supports, shall be furnished under this specification in Grade 300 [40], Grade 420 [60], and Grade 520 [75] (see Note 2).For ductility properties (elongation and bending), test provisions of the nearest nominal diameter deformed bar size shall apply. Those requirements providing for deformations and marking shall not be applicable.Note 2—The weight for plain rounds smaller than 9.5 mm [3/8 in.] in diameter shall be computed on the basis of the size in ASTM A510/A510M.Welding of the material in this specification should not be attempted since no experience has been demonstrated regarding weldability of this product. Mechanical coupling should be specified for bars requiring continuous longitudinal connection. Mechanical couplings must conform to ASTM A276/A276M, UNS S31803.This specification is applicable for orders in either SI units (M 329M) or in inch-pound units (M 329). SI units and inch-pound units are not necessarily equivalent. Inch-pound units are shown in brackets in the text for clarity, but they are the applicable values when the material is ordered to M 329.This standard was formerly designated as provisional standard MP 13M/MP 13.