High Carbon Silicon Block (10-100mm)

High Carbon Silicon 6818 Grade-also known as Silicon-Carbon Alloy Lumps-is a novel composite deoxidizing alloy material featuring silicon and carbon as its core constituents. It is primarily supplied in 10–100 mm lump form (with sizes adjustable according to customer requirements), containing 40%–72% silicon and 10%–24% carbon. Characterized by extremely low impurity levels (Phosphorus ≤ 0.05%, Sulfur ≤ 0.05%) and stable physicochemical properties, it is ideally suited for the production and processing of various types of ordinary steel and castings. Thanks to its superior deoxidizing, silicon-enhancing, and carbon-enhancing effects, it has emerged as a core choice within the metallurgical industry for reducing costs and boosting efficiency.

High Cost-Effectiveness: It serves as a direct, cost-effective substitute for traditional materials such as ferrosilicon, silicon carbide, and carbon raisers. While ensuring the quality of steelmaking and casting remains uncompromised, it allows for a reduction in alloy addition quantities, thereby lowering raw material costs by 30%–50% and significantly boosting a company's economic returns.
Superior Deoxidizing Effect: At high temperatures, it reacts rapidly with the oxygen present in molten steel to form slag that floats to the surface for easy removal. This effectively enhances the purity of the molten steel, improves the mechanical properties and internal quality of the finished steel products, and mitigates issues such as leakage and cracking in castings.
Precise and Controllable Specifications: The 10–100 mm lump size is uniform with minimal particle size deviation, requiring no secondary crushing; it can be introduced directly into the process, thereby saving on production steps and time costs. Furthermore, sizes and chemical compositions can be customized on demand to suit the specific requirements of different production scenarios.
Stable and Reliable Quality: Production adheres to standardized processes with rigorous raw material screening. Every product batch undergoes third-party testing, accompanied by a certified inspection report to ensure that impurity levels-such as phosphorus and sulfur-meet regulatory standards. The quality complies with ISO industry standards, ensuring consistent performance without fluctuations during long-term use.
Multifunctional Adaptability: It combines multiple functions-including deoxidation, silicon enhancement, carbon enhancement, and exothermic effects-making it suitable for use as a deoxidizer in steelmaking or a carbon raiser in iron casting. It helps refine grain structures, improve graphite morphology, and enhance both the surface finish and mechanical strength of castings, making it adaptable for the production of a wide range of products, including ordinary steel, low-alloy steel, and gray cast iron.

Q1: What is the Minimum Order Quantity (MOQ) for the 10–100 mm High Carbon Silicon lumps?

A1: Our standard Minimum Order Quantity (MOQ) is 20 tons; however, smaller trial orders are negotiable. We also support custom specifications and quantities tailored to your specific needs.
Q2: How do you guarantee product quality?
A2: We adhere to standardized production processes and strictly screen all raw materials. Every product batch undergoes third-party testing to ensure compliance with ISO industry standards, and a corresponding quality inspection report is issued. We can provide these reports for your verification.
Q3: Can you customize high-carbon silicon lumps with different dimensions or chemical compositions?
A3: Yes. In addition to our standard 10–100mm specifications, we can customize sizes such as 5–10mm, 50–150mm, and others. Furthermore, the silicon and carbon content can be adjusted according to your specific production requirements to meet your personalized manufacturing needs.

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