Factory direct silicon metal at competitive prices. Grades 97, 331, 441, 553, 1101 with low impurities for aluminum, silicone and steel applications. Factory direct pricing with MOQ from 10MT, 7-day production lead time.

Si: 97% min, Fe: 1.5% max, Ca: 0.3% max. Cost-effective grade for secondary aluminum refining.

Si: 98.5% min, Fe: 0.3%, Al: 0.3%, Ca: 0.1%. Common grade for aluminum extrusion and automotive alloys.

Si: 99% min, Fe: 0.4%, Al: 0.4%, Ca: 0.1%. Widely used in primary aluminum and polysilicon feedstock.

Si: 98.5% min, Fe: 0.5%, Al: 0.5%, Ca: 0.3%. Versatile grade for steelmaking and foundries.

Si: 99.5% min, Fe: 0.1%, Al: 0.1%, Ca: 0.01%. High‑purity grade for organic silicone and electronic applications.

Precision-engineered silicon metal with chemical composition (Si, Fe, Al, Ca, etc.) and particle size tailored to your exact specifications.
| Grade | Si (%) | Fe (%) | Al (%) | Ca (%) | Typical use |
|---|---|---|---|---|---|
| Silicon Metal 97 | ≥97 | ≤1.5 | ≤1.0 | ≤0.5 | General metallurgy and deoxidation |
| Silicon Metal 331 | ≥99 | ≤0.3 | ≤0.3 | ≤0.1 | Aluminium alloys, chemical use |
| Silicon Metal 441 | ≥99 | ≤0.4 | ≤0.4 | ≤0.1 | Primary and secondary aluminium casting |
| Silicon Metal 553 | ≥98.5 | ≤0.5 | ≤0.5 | ≤0.3 | Aluminium casting (ADC12, LM series) |
| Silicon Metal 1101 | ≥99.5 | ≤0.1 | ≤0.1 | ≤0.01 | Silicone and polysilicon feedstock |
| Custom grades | On request | On request | On request | On request | Tailored chemistry and particle size |
Explore our quality control process, production facilities, and customer interactions
Silicon metal, also called industrial silicon, is a silver-grey crystalline metalloid produced by reducing quartz with carbon in a submerged arc furnace. Commercial grades contain 97–99.5% Si, with iron, aluminium and calcium as the main impurities.
Bright Alloys supplies silicon metal in lumps, granules and powder for aluminium alloying, silicone and polysilicon feedstock, and as a deoxidiser in steelmaking.
Silicon metal 441 and 553 are the workhorses of primary and secondary aluminium casting, improving fluidity and strength in A356, ADC12 and LM-series alloys.
Silicon metal raises silicon content while lowering dissolved oxygen, and is charged in EAF and BOF heats where tight residual control is required.
Chemically refined grades such as 1101 feed silicone monomer and polysilicon routes that demand very low Fe, Al and Ca.
Our metallurgical experts provide application guidance and technical support for optimal alloy selection and usage.
We develop tailored alloy compositions to meet specific customer requirements and application needs.
Efficient global supply chain management ensuring timely delivery and optimal packaging for product integrity.
We specialize in custom alloy formulations. Contact us with your specific requirements for a tailored solution.
Request Custom Alloy