What Is the Difference Between Silicon Carbide 88% and 90%?
The main difference between Silicon Carbide (SiC) 88% and Silicon Carbide 90% lies in purity, impurity levels, performance in steelmaking, and price. Both grades are widely used in metallurgical applications such as steelmaking and foundries.
1. Purity Level
| Grade | SiC Content | Typical Use |
|---|---|---|
| SiC 88% | ≥88% | Standard steelmaking and cast iron production |
| SiC 90% | ≥90% | Higher-quality steel and alloy production |
Higher SiC content generally means better chemical efficiency and fewer impurities.
2. Impurity Content
Higher grades typically contain lower levels of impurities such as iron oxide, silica, and ash.
| Element | SiC 88% | SiC 90% |
|---|---|---|
| Silicon Carbide | ≥88% | ≥90% |
| Free Carbon | Slightly higher | Lower |
| Ash / Impurities | Higher | Lower |
Lower impurity levels help improve steel purity and process stability.
3. Performance in Steelmaking
SiC 88%
Suitable for general steelmaking
Cost-effective deoxidizer and carburizer
Common in electric furnace steel production
SiC 90%
Better silicon and carbon recovery rate
More stable chemical reaction
Often used in higher-quality alloy steels
4. Price Difference
SiC 90% is typically more expensive because of higher purity.
SiC 88% is often chosen when cost control is important.
5. Application Selection
Choose SiC 88% if:
Producing standard carbon steel or cast iron
Cost efficiency is a priority
Choose SiC 90% if:
Producing high-quality steel or alloy steel
Lower impurities and higher recovery are required
Summary
| Feature | SiC 88% | SiC 90% |
|---|---|---|
| Purity | Standard | Higher |
| Impurities | Higher | Lower |
| Cost | Lower | Higher |
| Application | General steelmaking | High-quality steel |
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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