Metallurgical Grade
1) 2202 Si-99% min Fe-0.20 max Al-0.20 max Ca-0.02 max
P-25ppm, 30ppm, 40ppm, 50ppm, 100ppm max
2) 3303 Si-99%min Fe-0.30 max Al-0.30 max Ca-0.30 max
3) 441 Si-99% min Fe-0.40 max Al-0.40 max Ca-0.10 max
4) 553 sI-98.5% min Fe-0.50 max Al-0.50 max Ca-0.30 max
Chemical Grade
1) 421 Si-99% min Fe-0.40 max Al-0.20 max Ca-0.10 max P-50ppm max
Size: 10-100mm 90 min
2) 411 Si-99% min Fe-0.40 max Al-0.10 max Ca-0.10 max P-50ppm max
Ti-0.045 max Ni-0.070 Mn-0.04 max Size: 2-25mm 90 min
Size: 10-100mm 90% min or 10-50mm 90%min as the requirement of user
Off-grade
1) SI:97%min Fe-1.5 max Al-1.0 max Ca-0.4 max /0.3max