Silicon Metal (Si)
Essential Alloying Element
Product Overview
Silicon is a major alloying element in aluminium alloys, critically utilised to improve overall mechanical strength and castability. It also finds vital application in premium brass and bronze production to significantly enhance corrosion resistance. DKL High Purity Silicon Metal provides manufacturing consistency and optimal fluidity for your industrial processes.
Applications & Foundational Material Benefits
Aluminium Alloying
Crucial for industrial aluminium casting where it dramatically enhances cross-sectional structural strength and overall melt fluidity.
Copper-Based Systems
Strategically introduced into premium brass and bronze metallurgy to build robust, localised corrosion resistance.
Fluidity & Castability
Optimises casting characteristics, ensuring flawless mould filling and substantially minimising structural defects during cooling.
Chemical Specifications
High Purity Silicon Metal
| Element | High Purity Silicon Metal | Standard Silicon Metal |
|---|---|---|
| Silicon (Si) | 99% min | 98.5% min |
| Iron (Fe) | 0.35% max | 0.5% max |
| Calcium (Ca) | 0.03% max | 0.3% max |
| Aluminium (Al) | 0.25% max | 0.5% max |
| Carbon (C) | 0.003% max | — |
| Phosphorus (P) | 0.003% max | — |
Product Sizing & Form Availability
- Fine Lumps: Sized between 3 mm and 10 mm, tailored for rapid melting and fast distribution within smaller melt volumes.
- Medium Lumps: Sized between 10 mm and 50 mm, engineered for standard furnace operations and balanced alloy integration.
- Coarse Lumps: Sized between 10 mm and 100 mm, optimized for large-scale foundry production and extended manufacturing cycles.
Why Choose DKL Metals for your High Purity Silicon?
DKL Metals delivers high-purity silicon metal tailored to meet stringent industry requirements. We source silicon metal in multiple lump sizes to suit your manufacturing needs, ensuring flexibility, convenience, and supply chain security.
Partnering with DKL Metals means securing a trusted supply of premium silicon metal backed by sustainable sourcing practices and rapid responsiveness to custom customer requirements.
Frequently Asked Questions
Where to buy high purity silicon metal lumps for UK foundries? +
DKL Metals is a trusted UK supplier of premium, high-purity silicon metal lumps. We provide rapid commercial delivery across the UK, offering certified chemical purity options (99% min Si) packaged specifically to meet the demanding quality control workflows of modern industrial foundries.
What is the best silicon metal lump size for aluminium alloying? +
The ideal sizing depends on your furnace capacity and melt dynamics. DKL Metals offers three distinct size allocations: 3-10mm for fast melting in smaller batches, 10-50mm for general purpose foundry workflows, and 10-100mm for large-scale metallurgical charging where prolonged thermal stability is required.
How does silicon metal content affect the corrosion resistance of brass and bronze? +
When precisely added to copper-based systems, silicon forms a highly stable protective oxide film on the surface of the alloy. This metallurgical change significantly increases cross-sectional hardness and boosts resistance to aggressive environments, such as marine sea water and industrial chemical exposure.