Metallic silicon grade 553, alongside 441, exhibits exceptional high temperature resistance, making it invaluable for metallurgy and high‑temperature industrial processes. Silicon remains stable at elevated temperatures, resisting deformation and chemical degradation, which is critical in furnace linings, alloy production, and casting.
| 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 offers higher purity, reducing volatile impurities that could affect performance at high heat; grade 441 provides a cost‑effective solution where ultra‑high purity is less critical. These properties ensure structural stability and chemical inertness in contact with molten metals, protecting equipment and maintaining alloy cleanliness. Used in steelmaking, aluminium smelting, and specialty alloy fabrication, metallic silicon supports efficient operation in extreme conditions. Our products are sized for easy handling and rapid integration, helping manufacturers improve process reliability and extend the lifespan of high‑temperature installations.