Silicon metal Grade421

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Apperance:Dark gray
Physical Property: High melting point and resistivity, good heat resistance and good anti-oxidation effect.
Particle Size: (10-100)mm.
Application and use:
1. Used in aluminum: An additive to aluminum alloys, silicon is used to increase the fluidity and tenacity of Aluminum and its alloys, which enjoy good castability and weldability accordingly.
2. Used in organic chemicals: Silicon metal is used in manufacturing a number of sorts of silicones, resins, and lubricants.
3. Used in electronic parts: Silicon metal is used in producing monocrystalline and polycrystalline silicon of high purity for electronic parts, such as semi conductors, etc.

The main grades our products cover:

Grade	Si	Fe(max)	Al(max)	Ca(max)	P(max)
553	98.5%min	0.50%	0.50%	0.30%
441	99% min	0.40%	0.40%	0.10%
421	99.2% min	0.40%	0.20%	0.10%
3303	99.3% min	0.30%	0.30%	0.03%	50ppm
2202	99.5% min	0.20%	0.20%	0.02%	40ppm

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Silicon metal Grade421

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