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本文根据最近文献报道，介绍几种制造成本低廉而实用价值极大，适合国内引进开发的新型高强度钢、球铁材料，叙述其生产工艺、性能及应用。
According to recent reports, this paper introduces several new high strength steel and ductile iron materials with low manufacturing cost and great practical value, which are suitable for the introduction and development in China. The production process, performance and application are described.