Who this page is for
Aluminum alloy plants and non-ferrous smelters.
What we put on the enquiry
Silicon metal grades listed on the source site: 553, 441, 421, with the grade article also naming 411, 3303, 3305, 2202, 2502, 1501, and 1101 as industry grade names.
Source copy states industrial silicon from a submerged-arc furnace is about 98% Si; after remelt, recrystallization, and acid treatment, purity can reach 99.7–99.8%.
Taken from silicon-metal product pages and the silicon-metal-grade article. Do not claim solar / semiconductor wafer supply — source pages emphasize aluminum alloys, special steel, and silicone chemicals.