金属硅3303# 硅si:99.3% 铝al:0.0025% 铁fe:0.0023% 钙ca:0.021% ∑:0.16%
金属硅2202# 硅si:99.5% 铝al:0.017% 铁fe:0.011% 钙ca:0.01% ∑:0.4% 磷p:0.002%
金属硅553# 硅si:≤98.60% 铝al:≤0.45% 铁fe:≤0.49% 钙ca:≤0.14% 杂:≤1.00% 碳c:0.03%
金属硅441# 硅si:≥99.00% 铝al:≤0.40% 铁fe:≤0.40% 钙ca:≤0.10% 杂:≤0.10% 碳c:≤0.047%