Product Code · silicon-metal-4-4-1

Siliziummetall 4-4-1

Si 4-4-1

Silicon Metal 4-4-1 is a high-purity elemental silicon (Si ≥ 99%) with tightly controlled residuals — Fe ≤ 0.4%, Al ≤ 0.4%, Ca ≤ 0.1% — supplied in 10-100mm lump per the GB/T 2881 grade 441 basis. The "4-4-1" code reflects the maximum Fe/Al/Ca fractions, the three impurities that govern downstream behavior. In aluminum casting alloys, added silicon raises fluidity, narrows the freezing range, and improves castability and wear resistance; the low Fe and Ca keep intermetallics and gas/dross formation in check. In the silicones route, 441 feeds the direct (Rochow) process to chlorosilanes, where Fe and Al directly affect selectivity, and it serves as polysilicon feedstock. Typical aluminum alloy additions run roughly 1-13 wt% Si depending on the target alloy (hypoeutectic to eutectic). Every lot ships with COA (EN 10204 3.1) and MTC, XRF-verified for Fe/Al/Ca, under multi-regional sourcing with CIF Marmara delivery, Gebze bonded stock for fast pulls, and 20 MT FCL / 5 MT LCL lots. Send your grade and tonnage for a same-spec RFQ and quote.

Chemical Specifications

Applications

• ▸Aluminum alloy
• ▸Chemical industry
• ▸Silicone production
• ▸Polysilicon feedstock

Supply Terms