应该就是：半硬回火冷轧钢
其实这段文字就是对这种钢的定义：
半硬回火----生产达到洛氏硬度B标尺HRB70-85的冷轧钢.这种回火产品是用来进行有限的冷锻成型,它只承受延轧制方向90度的弯曲.
COLD ROLLED STEEL HALF HARD TEMPER
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