| 2804.61.00 | 00 | Silicon: | | | | |
| 2804.61.00 | 00 | Containing by weight not less than 99.99 percent of silicon | kg | Free | | 25% |
| 2804.69.10 | 00 | Containing by weight less than 99.99 percent but not less than 99 percent of silicon | kg Si kg | 5.3% | Free (A*,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 21% |
| 2811.22 | | Silicon dioxide: | | | | |
| 2849.20 | | Of silicon: | | | | |
| 2931.00.90 | 10 | Organo-silicon compounds | kg | | | |
| 3910.00.00 | 00 | Silicones in primary forms | kg | 3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, K,MA,MX, P,SG) | 25% |
| 7202.21 | | Ferrosilicon: | | | | |
| 7202.21 | | Containing by weight more than 55 percent of silicon: | | | | |
| 7202.21.10 | 00 | Containing by weight more than 55 percent but not more than 80 percent of silicon: | | | | |
| 7202.21.75 | 00 | Containing by weight more than 80 percent but not more than 90 percent of silicon | kg Si kg | 1.9% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MX,P,SG) 1.2% (MA) | 9% |
| 7202.21.90 | 00 | Containing by weight more than 90 percent of silicon | kg Si kg | 5.8% | Free (A+,AU,BH, CA,CL,D,E,IL, J,JO,MX, P,SG) 3.8% (MA) | 40% |
| 7202.30.00 | 00 | Ferrosilicon manganese | kg Mn kg | 3.9% | Free (A*,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 23% |
| 7202.50.00 | 00 | Ferrosilicon chromium | kg Cr kg | 10% | Free (A,CA,CL, E,IL,J,JO,MA, MX,P) 5% (AU) 3.7% (SG) | 25% |
| 7202.80.00 | 00 | Ferrotungsten and ferrosilicon tungsten | kg W kg | 5.6% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P, SG) | 35% |
| 7202.91.00 | 00 | Ferrotitanium and ferrosilicon titanium | kg | 3.7% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MX,P,SG) 2.4% (MA) | 25% |
| 7202.93.40 | 00 | Containing by weight less than 0.02 percent of phosphorus or sulfur or less than 0.4 percent of silicon | kg | 5% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MX,P,SG) 3.3% (MA) | 25% |
| 7202.99.20 | 00 | Calcium silicon | kg | 5% | Free (A,AU,BH,CA, CL,D,E,IL,J, JO,MX,P,SG) 3.3% (MA) | 25% |
| 7225.11.00 | 00 | Of silicon electrical steel: | | | | |
| 7226.11 | | Of silicon electrical steel: | | | | |
| 7229.20.00 | 10 | Round, with a diameter of less than or equal to 1.6 mm, containing by weight less than 0.20 percent of carbon, more than 0.9 percent of manganese, and more than 0.6 percent of silicon, and suitable for electric arc welding: | | | | |
| 7601.20.60 | 00 | Containing 25 percent or more by weight of silicon | kg | 2.1% | Free (A+,AU,BH, CA,D,E,IL,J,JO, MA,MX, P,SG) 0.7% (CL) | 25% |
