Every Customer Is The Best Case
Initial Heart In An Inch Close In Ingenuity
Every Customer Is The Best Case
Initial Heart In An Inch Close In Ingenuity
顶头，主要是由碳、铁、铬、钼元素所组成。所述的C为0.13-0.3%，Cr为1.0-2.2%，Ni为1.0-4.5%，Si为0.2-1.4%，Mn为0.2-1.4%，Mo为0.1-0.7%，W为0.6%，S为0.04%，P0.04%，其余为Fe和其它少量元素(其含量均以...
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