High purity 553 grade metal silicon is a premier choice for steelmaking, delivering low impurity levels for clean, high‑performance steels. Its high silicon content ensures effective deoxidation, removing oxygen that causes porosity and weakens steel. Grain refinement from silicon addition improves strength, toughness, and fatigue resistance, essential for structural, tool, and specialty steels.
| Garde | Composition | ||||
| Si Content (%) | Impurities (%) | ||||
| Fe | Al | Ca | P | ||
| Silicon Metal 1501 | 99.69 | 0.15 | 0.15 | 0.01 | ≤0.004% |
| Silicon Metal 1502 | 99.68 | 0.15 | 0.15 | 0.02 | ≤0.004% |
| Silicon Metal 1101 | 99.79 | 0.1 | 0.1 | 0.01 | ≤0.004% |
| Silicon Metal 2202 | 99.58 | 0.2 | 0.2 | 0.02 | ≤0.004% |
| Silicon Metal 2502 | 99.48 | 0.25 | 0.25 | 0.02 | ≤0.004% |
| Silicon Metal 3303 | 99.37 | 0.3 | 0.3 | 0.03 | ≤0.005% |
| Silicon Metal 411 | 99.4 | 0.4 | 0.1 | 0.1 | ≤0.005% |
| Silicon Metal 421 | 99.3 | 0.4 | 0.2 | 0.1 | – |
| Silicon Metal 441 | 99.1 | 0.4 | 0.4 | 0.1 | – |
| Silicon Metal 551 | 98.9 | 0.5 | 0.5 | 0.1 | – |
| Silicon Metal 553 | 98.7 | 0.5 | 0.5 | 0.3 | – |
| Off-Grade Silicon Metal | 96 | 2 | 1 | 1 | – |
Grade 553’s consistent chemistry and minimal tramp elements help achieve tight metallurgical specifications and reduce costly rework. Rapid dissolution in molten steel shortens processing time and saves energy. Steelmakers rely on this grade for producing high‑strength, defect‑free products used in demanding applications. Our 553 metal silicon is supplied with full quality certification, enabling manufacturers to meet industry standards while optimizing production efficiency and cost.