Chemical composition:
Grade chemical composition(%) SiAlCaMnCrPSC
≤
FeSi75751.510.50.50.040.020.2
FeSi7272210.50.50.040.020.2
FeSi7070210.60.50.040.020.2
FeSi6565210.70.50.040.020.2
FeSi6060210.80.60.050.030.3
FeSi4540-47210.70.50.040.020.2