What Is the Standard Silicon Carbide Specification?
Silicon Carbide (SiC) used in metallurgy and steelmaking follows standardized specifications based on SiC purity, chemical composition, particle size, and application requirements. International buyers typically evaluate SiC according to SiC content, impurity levels, and size distribution.
At ZhenAn, metallurgical-grade Silicon Carbide is supplied according to commonly accepted industry standards used by steel plants and foundries.
Typical Metallurgical Silicon Carbide Specification
| Item | SiC 88% | SiC 90% | SiC 92% |
|---|---|---|---|
| SiC Content | ≥88% | ≥90% | ≥92% |
| Free Carbon | ≤3.5% | ≤3.0% | ≤2.5% |
| SiO₂ | ≤3.5% | ≤2.5% | ≤2.0% |
| Fe₂O₃ | ≤1.0% | ≤0.8% | ≤0.6% |
| Moisture | ≤0.5% | ≤0.5% | ≤0.5% |
These grades are commonly used for:
Steelmaking deoxidation
Foundry iron production
Alloy steel manufacturing
Metallurgical reduction processes
Common Particle Sizes
Silicon carbide is supplied in several standard size ranges depending on furnace type and process requirements.
Typical sizes include:
0–10 mm
1–10 mm
10–50 mm
100 mesh – 325 mesh powder
Custom particle sizes can also be produced for specific steelmaking processes.
Typical Packaging for Export
Metallurgical SiC is usually packed for international transport in:
1 MT big bags
25 kg bags inside jumbo bags
Bulk container loading
Proper moisture protection is used to maintain product quality during shipping.
Applications of Metallurgical Silicon Carbide
Silicon Carbide is widely used in:
Electric arc furnace steelmaking
Induction furnace melting
Cast iron and foundry production
Alloy steel manufacturing
It functions mainly as a deoxidizer, carburizer, and silicon additive, helping improve steel quality and reduce alloy consumption.
FAQ – Silicon Carbide Specifications
What purity levels of silicon carbide are commonly used in metallurgy?
The most common grades are SiC 88%, SiC 90%, and SiC 92%, which are suitable for steelmaking and foundry applications.
What particle size of silicon carbide is used in steelmaking?
Steel plants typically use 0–10 mm or 1–10 mm sizes for furnace addition, while powder grades are used for specialized processes.
How is silicon carbide quality evaluated?
Quality is usually evaluated based on SiC purity, free carbon content, silica content (SiO₂), iron oxide (Fe₂O₃), and particle size distribution.
Can silicon carbide replace ferro silicon in steelmaking?
In many steel plants, silicon carbide is used as a partial substitute for ferro silicon, helping reduce alloy cost while maintaining metallurgical performance.
What industries use metallurgical silicon carbide?
Major industries include steelmaking, foundries, metallurgy, and alloy production.
Summary
Standard silicon carbide specifications focus on:
SiC purity (88–92%)
Low impurity levels
Controlled particle size
Stable metallurgical performance
These factors ensure consistent performance in steelmaking and foundry operations.
Why Choose ZhenAn
Consistent Quality – Strict production control and reliable testing ensure stable chemical composition and performance in every shipment.
Key Metallurgical Products – Silicon Carbide, Ferro Vanadium, Flake Vanadium Pentoxide, Metallic Silicon, Silicon Powder, Electrolytic Manganese Flakes, and Ferrosilicon.
Flexible Specifications – Particle size, purity, and packaging can be adjusted to meet different metallurgical and industrial requirements.
Reliable Export Partner – Experienced in international trade with professional handling of inspection, documentation, and logistics across global markets.
Stable Supply Chain – Long-term cooperation with qualified manufacturers ensures dependable production and on-time delivery.
Efficient Communication – Clear specifications, quick quotations, and responsive technical support for procurement teams.
Competitive Value – Practical balance between product quality, price, and performance for long-term cooperation.
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