Products Description
Silicon metal is a product smelted from quartz and coke in an electric heating furnace. The main component silicon content is about 98%. The remaining impurities are iron, aluminum, calcium, etc.
Silicon metal is a very important industrial product used in many industries such as steelmaking, cast iron, aluminum (aviation, aircraft and automotive parts production) and silicon photovoltaic devices.
Specifications
Metallic silicon is usually classified based on the content of three main impurities contained in metallic silicon: Fe, Al, and Ca.
| 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 | – |
Remark：Other chemical composition and size can be supplied upon request.
Supply Ability: 3000 Metric Tons per month
Min Order Quantity: 20 Metric Ton
Key Features & Benefits
Ultra-High Purity (98.5%-99.999999%)
Metallurgical Grade (98.5-99.5% Si): Controlled Fe/Al/Ca ratios (553/441 grades) optimize fluidity in aluminum alloying
Solar Grade (6N-9N): <1ppb boron/phosphorus prevents carrier recombination in PV cells
Electronic Grade (11N): <0.01ppb metallic impurities enable 5nm chip fabrication
Industrial Impact:
Enables >24% solar cell efficiency (PERC, HJT technologies)
Reduces wafer defect density to <0.1/cm² for 300mm semiconductor wafers
Extends refractory lining lifespan by 40% in steel ladles
01
Semiconductor Properties
Band Structure Characteristics:
Bandgap: 1.12eV (300K), ideal for visible light applications
Intrinsic carrier concentration: 1.5×10¹⁰/cm³
Electron mobility: 1500 cm²/V·s (doping dependent)
Device Engineering Benefits:
Enables:
Power MOSFETs with RDS(on) <1mΩ·cm²
CMOS logic gates with 100GHz switching
CCD sensors with 90% quantum efficiency
02
Thermal & Chemical Stability
Performance Data:
Property Value Advantage
Thermal Conductivity 149 W/m·K 3× better heat dissipation than GaAs
CTE (25-300°C) 2.6×10⁻⁶/K Matches SiO₂ for stress-free passivation
Oxidation Rate (1000°C) 0.1μm/hr Forms protective SiO₂ layer
Industrial Applications:
Crucibles for 1700°C molten metal handling
Rocket nozzle linings (resists 3000°C plasma)
Chemical plant heat exchangers (HCl/HF resistance)
03
Applications
1. Aluminum Alloys (Metallurgical Grade, 553/441)
Improves strength & castability in automotive (engine blocks, wheels) and aerospace components.
Reduces weight while maintaining durability.
2. Silicones & Chemicals (Chemical Grade, 99%)
Used in sealants, adhesives, lubricants, and cosmetics.
Acts as a base for silanes, resins, and rubber compounds.
3. Solar Industry (Solar Grade, 6N-9N)
Primary material for monocrystalline & polycrystalline solar cells.
Enables high-efficiency photovoltaic (PV) panels
FAQ
Q: What is Foreign Trade-Express?
A: Foreign Trade Express is a one-stop intelligent foreign trade network marketing SaaS system platform.
Q: Are you a manufacture or trader?
A: We are manufacture.
Q: How are the products' quality?
A: The products will be strictly inspected before shipment, so the quality could be guaranteed.
Q: How about your company's certification?
A: ISO9001 and Test Report.
Q: What's the MOQ of trial order?
A: No limit,We can offer the best suggestions and solutions according to your condition.
Q: How long is delivery time?
A: The delivery time will be determined according to the quantity of the order.
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