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
*性能可通过轧制淬火获得。
ⓐ 351-固溶,通过拉伸控制量(设定1%~3%)消除应力+自然时效。拉伸后的产品不再矫直。(solution heat-treated, stress-relieved by stretching a controlled amount (permanent set 1 %,to 3 %) and naturally aged. The products receive no further straightening after stretching.)
ⓑ T3510-固溶,通过拉伸控制量(设定0.5%~3%对轧管)消除应力+自然时效。拉伸后的产品不再矫直。(solution heat-treated, stress-relieved by stretching a controlled amount (permanent set 1 %,to 3 %) and naturally aged. The products receive no further straightening after stretching.)
ⓒ T3511-与T3510相同,除了在拉伸后允许轻微矫直以符合标准公差。(same as T3510 except that minor straightening is allowed after stretching to comply with standard tolerances)