Clean the bath surface of all dross before addition. Add the required amount of master alloy at normal operating temperatures and stir thoroughly to ensure complete and homogeneous dissolution. Unlike phosphorus, silicon does not “fade” as rapidly, but prompt casting is still recommended for consistent results.

CuSi is the preferred choice for Copper-Nickel alloys (CuNi), as it provides essential deoxidation and fluidity without causing the grain boundary embrittlement associated with phosphorus. It is also vital for precipitation hardening in low-alloyed copper.

CuSi should not be used in high-conductivity copper applications where maximum electrical or thermal conductivity is required, as silicon significantly increases electrical resistivity even in small amounts.

Silicon is often used to maintain a more “copper-like” appearance compared to other hardeners. While it increases strength and corrosion resistance, higher silicon content (above 4%) can reduce cold workability, making the alloy more suitable for casting rather than extensive drawing or forming.

Yes. Beyond its role as a hardener, silicon significantly enhances the corrosion resistance of copper alloys, particularly against salt water and acidic environments, making it a key component in marine-grade bronzes and brasses.

Store in a clean, dry area to prevent surface oxidation. While more stable than CuP, keeping the material away from high humidity ensures the alloy remains free of surface contaminants before addition to the furnace.

Remove all dross from the bath surface and add the required amount at normal operating temperatures. Stir well for homogeneous dissolution. Start casting immediately, as phosphorus tends to fade over time.

CuP is unsuitable for high conductivity copper (as it reduces electrical conductivity) and copper-nickel alloys (where it causes grain boundary embrittlement).

Store in a dry area to prevent oxidation. Reaction with humidity will manifest as bluish crystals on the product surface.

During the casting process, it is common practice to aim for a residual phosphorus level of 0.010 to 0.015% to effectively prevent reoxidation.

To prevent excessive oxidation and maintain material integrity, the alloy must be stored in a dry, climate-controlled area.

Beyond alloying, it acts as a powerful deoxidising and desulphurising agent specifically for Copper-Nickel (CuNi) alloy systems.

Yes. While standard delivery is on wooden pallets with batch-specific labelling, other compositions and packaging configurations are available upon request.

For best results, remove all dross from the bath surface and add the waffle plates at normal operating temperatures, stirring thoroughly to ensure homogeneous dissolution.