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为缩短国内外工程机械的差距，从1992年起，天津工程机械研究所与鞍山钢铁公司等单位合作，陆续研制开发了11种适用于工程机械的新钢种。IE170低合金高强度钢板工程机械作业时，关键结构件除承受整机重量外，还承受着强烈的冲击。因此，要求选用的材料有较好的可焊性和较高的强
To shorten the gap between construction machinery at home and abroad, from 1992 onwards, Tianjin Research Institute of Construction Machinery and Anshan Iron and Steel Company and other units, developed one after another 11 kinds of new types of steel suitable for construction machinery. IE170 low-alloy high-strength steel construction machinery operations, the key structural components in addition to withstand the weight of the machine, but also to withstand a strong impact. Therefore, the choice of materials have better solderability and higher strength