请教硅钢片的成分和含量

请教哪位知道各种型号硅钢片的成分和含量啊，谢谢了！！文字

硅钢属于低碳高硅钢材。
给你提供几个。成分依次（先上限，再下限）你对照下。
具体生产时要根据性能自己选择成分多少。
给你提供一份（不能说明厂家，抱歉）C  0.03～0.1
                                                  Si   1～3
                                                  Mn 0.1～0.5
其余参照下面


GBW NO             C S P Mn Si Ni Cr Cu Mo Al(s) Al(is)*
GBW01371   0.079,0.001 0.025,0.001 0.026,0.001 0.313,0.004 2.39,0.02 0.222,0.003 0.392,0.007 0.408,0.007 0.0040,0.0004 , ,
GBW01372   0.057,0.002 0.020,0.001 0.012,0.001 0.225,0.005 3.36,0.02 0.316,0.004 0.259,0.006 0.314,0.007 0.0036,0.0004 0.166,0.006 0.0019,0.0004
GBW01373   0.034,0.002 0.019,0.001 0.007,0.001 0.127,0.006 4.38,0.02 0.415,0.007 0.164,0.008 0.118,0.003 0.0037,0.0004 0.073,0.004 0.0018,0.0004
GBW01374   0.162,0.003 0.030,0.001 0.036,0.001 0.346,0.005 0.998,0.006 0.103,0.002 0.471,0.006 0.213,0.004 0.0048,0.0004 0.208,0.006 0.0010,0.0002

对N没有要求吗

C在３０～５０ppm