Silicon Metalloid Powder

• High-purity Silicon Metalloid Powder
• Elemental Silicon Powder
• Silicon Metal Powder
• Silicon Powder (Si)
• Metallurgical-grade silicon powder
• High silicon content
• Controlled particle size
• High chemical purity
• Excellent alloying performance
• Good thermal stability
• Semiconductor material
• Suitable for aluminum-silicon alloys
• Suitable for ferrosilicon production
• Suitable for metallurgical applications
• Suitable for photovoltaic research
• Suitable for semiconductor research
• Suitable for battery materials
• Suitable for lithium-ion battery anodes
• Suitable for silicon-based composites
• Suitable for ceramic materials
• Suitable for refractory materials
• Suitable for chemical synthesis
• Suitable for advanced materials research
• Fine and micronized grades available
• Custom particle size
• Custom purity
• COA available

Property	Specification
Product Name	Silicon Metalloid Powder
Chemical Name	Silicon / Silicon Metal
Chemical Symbol	Si
Atomic Number	14
CAS Number	7440-21-3
Molecular Weight	28.085 g/mol
Material Type	Metalloid / Elemental Semiconductor
Silicon Purity	98%, 99%, 99.5%, 99.9%, 99.99%+
Appearance	Gray / Dark Gray Powder
Crystal Structure	Diamond Cubic
Melting Point	~1,414°C
Density	~2.33 g/cm³
Particle Size	Custom
D50	Custom
Specific Surface Area	Custom
Oxygen Content	Controlled
Carbon Content	Controlled
Iron Content	Controlled
Packaging	Bag / Drum / Custom

• Metallurgical-Grade Silicon Powder
• Silicon Metal Powder
• Elemental Silicon Powder
• High-Purity Silicon Powder
• 98% Silicon Powder
• 99% Silicon Powder
• 99.5% Silicon Powder
• 99.9% Silicon Powder
• 99.99% Silicon Powder
• Semiconductor-Grade Silicon Powder
• Solar-Grade Silicon Powder
• Battery-Grade Silicon Powder
• Metallurgy-Grade Silicon Powder
• Aluminum-Silicon Alloy Grade
• Ferrosilicon Grade
• Ceramic-Grade Silicon Powder
• Refractory-Grade Silicon Powder
• Micronized Silicon Powder
• Fine Silicon Powder
• Ultrafine Silicon Powder
• Custom Particle-Size Silicon
• Custom Purity Silicon Powder

1. What is Silicon Metalloid Powder?

Silicon Metalloid Powder is powdered elemental silicon (Si). Silicon is classified as a metalloid because it exhibits properties intermediate between metals and nonmetals.

2. What is Silicon Metal Powder used for?

Applications include metallurgy, aluminum-silicon alloys, ferrosilicon production, semiconductor research, photovoltaics, ceramics, refractories, battery materials, chemical synthesis, and advanced materials.

3. What is the difference between silicon powder and silicon metal powder?

Both terms can refer to elemental silicon powder. “Silicon metal powder” is commonly used for metallurgical grades, while “high-purity silicon powder” generally indicates tighter impurity specifications.

4. What purity levels are available?

Depending on the application, grades can range from approximately 98% silicon to 99.99%+ purity, with customized impurity specifications available.

5. What particle sizes are available?

REG Metals can source coarse, fine, micronized, and ultrafine silicon powders, with customized D50 and particle-size distributions.

6. Can silicon powder be used in aluminum alloys?

Yes. Silicon powder can be used as a silicon addition for producing aluminum-silicon alloys and other metallurgical compositions.