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新近开发了一种新型的高强度热轧薄钢板。其特点是含少量的磷,增加了碳、锰的含量。磷是作为硬化元素而存在的。表1所示为新开发的含磷高强度薄钢板及传统薄钢板的化学成分。
Recently, a new type of high strength hot-rolled steel sheet has been developed. It is characterized by a small amount of phosphorus, an increase of carbon and manganese content. Phosphorus is present as a hardened element. Table 1 shows the chemical composition of newly developed phosphorus-containing high-strength steel sheets and conventional steel sheets.