In 2026, as the global steel industry transitions towards in-depth green and low-carbon development, High Carbon Silicon (also known as silicon-carbon alloy), as a new type of composite deoxidation material, is rapidly replacing traditional deoxidizers with its excellent performance and cost advantages, becoming a core auxiliary material in converter steelmaking processes. Different from traditional deoxidation materials that are easily affected by furnace conditions and have large composition fluctuations, High Carbon Silicon takes silicon (≥55%) and carbon (≥15%) as core components, supplemented by trace amounts of silicon dioxide, phosphorus, sulfur and other elements, achieving multiple breakthroughs in deoxidation efficiency, stability and environmental protection, which is particularly in line with the latest policy requirements for in-depth ultra-low emission transformation in the steel industry in 2026.
Core Characteristics and Deoxidation Advantages of High Carbon Silicon
As a deoxidizer specially designed for steel smelting, the core advantages of High Carbon Silicon are reflected in three dimensions: “high efficiency, stability, and multi-functionality”, specifically as follows:
High Deoxidation Efficiency: In high-temperature molten steel, silicon and carbon in High Carbon Silicon can quickly react with oxygen. The generated silica slag has low density and is easy to float, with a deoxidation rate of up to 94.5%, which is 12 percentage points higher than traditional ferrosilicon powder. It effectively solves defects such as pores and cracks in castings caused by excessive oxygen content in molten steel.
Strong Composition Stability: Compared with traditional deoxidizers that are greatly affected by electrode distribution and furnace temperature fluctuations, High Carbon Silicon has stable physical and chemical properties. Even under complex furnace conditions, it can ensure uniform molten steel composition and reduce the unqualified rate of finished product internal control indicators. The latest industry data in 2026 shows that the qualified rate of finished products in steel mills using High Carbon Silicon has increased to more than 99%.
Multi-Functional Integration: While deoxidizing, High Carbon Silicon can also achieve desulfurization and carburization functions, which can replace part of the carburizer and reduce the types of auxiliary materials used. It is estimated that the cost of auxiliary materials per furnace of steelmaking can be reduced by more than 30%, while reducing dust emissions in the furnace, which is in line with the environmental protection requirements for steelmaking auxiliary materials in the “Industrial Carbon Peaking Implementation Plan”.
2026 Main Product Specifications of High Carbon Silicon (WordPress-Compatible Table)
| Product Model | Si ≥ (%) | C ≥ (%) | Al ≤ (%) | S ≤ (%) | P ≤ (%) | Size (mm) |
| Si68C18 | 68 | 18 | 3 | 0.1 | 0.05 | 5-25 |
| Si65C15 | 65 | 15 | 3 | 0.1 | 0.05 | 10-50 |
| Si60C10 | 60 | 10 | 3 | 0.1 | 0.05 | 10-100 |
2026 Latest Industry Trends and Application Prospects of High Carbon Silicon
In 2026, driven by the steady recovery of global steel production capacity and the continuous tightening of environmental protection policies, the demand for the High Carbon Silicon market has shown explosive growth. According to the Q1 2026 industry report, as the proportion of electric arc furnace steelmaking increases from 22% in 2025 to 26% in 2026, the demand for high-quality deoxidizers in short-process steelmaking has surged. As a core auxiliary material suitable for short-process technology, the market size of High Carbon Silicon has increased by 52% year-on-year. At the same time, the European Union has officially implemented the Carbon Border Adjustment Mechanism (CBAM) in 2026, putting strict requirements on the carbon footprint of imported steel products. High Carbon Silicon can reduce carbon emissions per unit of steelmaking by 18%-23%, making it a key material for steel mills to meet international standards.
In terms of application scenarios, High Carbon Silicon has been fully expanded from ordinary steel smelting to high-end fields such as alloy steel and special steel. Especially in the production of high-end products such as high-strength steel for new energy vehicles and steel for photovoltaic brackets, the precise deoxidation and composition stability advantages of High Carbon Silicon can effectively improve the mechanical strength and corrosion resistance of steel. In the next 2-4 years, with the continuous maturity of green metallurgy technology, the penetration rate of High Carbon Silicon in the steel industry will further increase, and the market size is expected to exceed 13 billion yuan by 2030.