Products SILICON METAL 3303 SILICON METAL 3303 Chemical CompositionElementSpecification (%)Silicon (Si)≥ 99.37Iron (Fe)≤ 0.30Aluminum (Al)≤ 0.30Calcium (Ca)≤ 0.03The grade designation “3303” indicates the maximum impurity levels:3 = Fe ≤ 0.3%3 = Al ≤ 0.3%03 = Ca ≤ 0.03%Silicon Metal 3303 Specification TableGradeSi (%)Fe (%)Al (%)Ca (%)3303≥99.37≤0.30≤0.30≤0.03Typical ApplicationsHigh-quality aluminum alloy productionSilicone rubber and silicone resin manufacturingChemical industryMetallurgical additivesSolar and electronic-grade silicon processing