Since pig iron and scrap are cheap, and because there is no expensive refinement process, cast iron is a low cost material compared with steel.
由于生铁和废钢铁都便宜，又因为不需要昂贵的精炼过程，和钢相比铸铁是一种廉价材料。
These are graphite, high silicon cast iron, lead silver alloy, platinum, and even scrap steel rails.
所用材料有石墨、高硅铸铁、铅银合金、铂、甚至废钢轨等。
The melting conditions and mechanical properties of the synthetic cast irons produced with steel scrap and returns as main melting charge were introduced.
介绍以废钢和回炉料为主要炉料生产合成铸铁的熔炼条件和合成铸铁的力学性能指标。
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