①d=圆棒直径;s=方、六角棒材截面宽度,矩形棒材的厚度;t=管材壁厚;单位/mm
②A、A50-标距
ⓖ T6510-固溶,通过拉伸控制量(设定0.5%~3%对轧管)消除应力+人工时效。拉伸后的产品不再矫直。(solution heat-treated, stress-relieved by stretching a controlled amount (permanent set 0,5% to 3 % for drawn tube) and then artificially aged. The products receive no further straightening after stretching.)
ⓗ T6511-与T6510相同,除了在拉伸后允许轻微矫直以符合标准公差。(same as T6510 except that minor straightening is allowed after stretching to comply with standard tolerances)