牌号08A1属优质碳素结构钢范围是肯定无疑的。但安的具体定义各个标准有气温同,有的甚至有很折的差异。我们先乍GB699—88《优质碳素结构钢技术条件》标准中的3.1.1.4节“08钢亦可用铝脱氧冶炼镇静钢,含锰量下限为0.25％,含硅量不大于0.03％,含铝量为0.02％～0.07％,此时牌号为08A1。”又在GB710—91《优质碳素结构钢热轧薄钢板和钢带》标准中的5.1.2节在 Grade 08A1 is a range of high-quality carbon structural steel is certain. However, the specific definition of safety standards have the same temperature, and some even have very different differences. We first first GB699-88 “high-quality carbon structural steel technical conditions” standard 3.1.1.4 “08 steel can also be deoxidized aluminum smelting killed steel, manganese content of the lower limit of 0.25%, silicon content of not more than 0.03%, containing The amount of aluminum is 0.02% ~ 0.07%, at this time grade 08A1. ”Again in GB710-91“ high-quality carbon structural steel hot-rolled steel sheet and strip ”section 5.1.2 in