Reliable Metallurgical Grade Silicon Metal 553 Lump
Cost-Effective Solution: The best balance between purity and price for aluminum casting.
Consistent Quality: Strictly controlled Fe ≤ 0.5% and Al ≤ 0.5% to ensure melt stability.
Large-Scale Supply: Massive stock ready for fast shipment from Huangpu Port.
High-Performance Metallurgical Grade Silicon Metal 553 Lumps
Silicon Metal 553 is the most essential grade for the global aluminum alloy industry. ZhenAn's 553 lumps are famous for their cost-effectiveness and consistent physical properties, helping you optimize casting strength and fluidity.
- Physical Form: Lumps with a bright silver-gray metallic luster.
- Standard Size: 10-100mm (90% min).
- Custom Sizing: Precise crushing to 10-50mm or 50-100mm is available upon request.
Detailed Technical Specifications
For metallurgical applications, consistent impurity levels are vital. Our Grade 553 strictly follows these chemical limits:
| Chemical Element | Specification (Standard) | ZhenAn Typical Value |
| Silicon (Si) | ≥ 98.5% | 98.7% - 98.9% |
| Iron (Fe) | ≤ 0.50% | 0.42% - 0.45% |
| Aluminum (Al) | ≤ 0.50% | 0.38% - 0.42% |
| Calcium (Ca) | ≤ 0.03% | 0.01% - 0.02% |
Why Choose ZhenAn's 553 Lumps?
- Cost-Effective Supply: Get the most competitive factory-direct prices (currently USD 1280-1310 FOB Huangpu).
- Clean Surface: Every batch is screened to ensure lumps are free of slag, oxidation skin, and excessive dust.
- Logistics Advantage: Strategically located near major export hubs like Huangpu and Tianjin ports for rapid international delivery.
Application & Packing
Mainly used as a core additive in aluminum alloy smelting for automotive wheels, engine blocks, and construction profiles to enhance hardness and durability.
- Packing: 1 MT waterproof Jumbo bags with bottom pallets.
- Capacity: 20-25 tons per 20ft FCL.
Quality Assurance
ZhenAn provides a full Mill Test Certificate (MTC) with every shipment. We fully support third-party pre-shipment inspections by SGS or Bureau Veritas (BV) to guarantee the chemical composition meets your exact standards.
Contact our expert sales team today for a customized CIF quote to your destination port!
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