90% silicon carbide (SiC) is considered one of the best deoxidizers in steelmaking because it provides both silicon and carbon, enabling efficient oxygen removal while improving steel composition. It offers higher efficiency, better metallurgical performance, and stronger cost advantages compared with traditional deoxidizers.
What Is 90% Silicon Carbide?
90% silicon carbide is a metallurgical grade material containing approximately 90% SiC, with controlled levels of silicon, carbon, and trace elements.
It is widely used as a deoxidizer and carburizing additive in steel production, helping improve both chemical composition and steel quality.
Compared with lower-grade silicon carbide, 90% SiC provides more stable performance and stronger reactions in high-temperature metallurgical processes.
How Does 90% SiC Work in Steel Deoxidation?
In steelmaking, molten steel contains dissolved oxygen that must be removed to prevent defects such as porosity and inclusions.
When 90% silicon carbide is added, it reacts as follows:
Si + O → SiO₂
C + O → CO
These reactions help remove oxygen from molten steel while also adjusting carbon content.
Because 90% SiC contains both silicon and carbon, it performs dual functions, making it more efficient than single-element deoxidizers.
Why Is 90% SiC More Effective Than Lower Grades?
Silicon carbide is available in different grades such as SiC 88% and SiC 90%, but 90% SiC is often preferred in modern steelmaking.
Higher Reaction Efficiency
The higher SiC content allows faster and more complete reactions, improving deoxidation efficiency.
Better Steel Quality
90% SiC helps:
- reduce inclusions
- refine grain structure
- improve steel purity
More Stable Performance
Higher purity ensures consistent results in industrial processes, especially in large-scale steel production.
How Does 90% SiC Compare with Traditional Deoxidizers?
Traditional deoxidizers such as ferrosilicon and aluminum are widely used, but they have limitations.
Dual Function Advantage
90% SiC acts as both:
- a deoxidizer
- a carburizer
This reduces the need for multiple additives.
Improved Cost Efficiency
Although 90% SiC may have a higher unit price, it lowers overall production costs by:
- reducing additive consumption
- improving reaction efficiency
- minimizing waste
Enhanced Furnace Performance
Silicon carbide improves chemical reactions inside furnaces, helping increase productivity and reduce energy consumption.
Where Is 90% Silicon Carbide Used?
90% silicon carbide is widely used across several metallurgical applications.
Steelmaking
Used in electric arc furnace (EAF) steel production and ladle refining processes.
Foundry Industry
Helps adjust carbon and silicon content in cast iron production and improves casting quality.
Alloy Production
Used in producing high-performance alloy steels that require precise composition control.
When Should You Choose 90% SiC?
90% silicon carbide is the best choice when:
- high deoxidation efficiency is required
- strict steel quality standards are needed
- stable metallurgical performance is important
For general applications, lower grades may be sufficient, but for higher-end steel production, 90% SiC delivers better results.
Does 90% SiC Affect Production Cost?
While 90% silicon carbide may have a slightly higher price compared with lower grades, it often reduces total production cost due to its efficiency.
Its ability to replace both deoxidizers and carburizers makes it a cost-effective solution in modern steelmaking.
Why Steel Mills Prefer 90% SiC
Today's steel industry demands:
- higher efficiency
- better quality
- lower production cost
90% silicon carbide meets all these requirements, making it increasingly popular among steel manufacturers worldwide.
Work With a Reliable Silicon Carbide Supplier
ZhenAn specializes in metallurgical materials and supplies SiC 90% and SiC 88% silicon carbide for steelmaking and foundry industries.
Our advantages include:
stable product quality
customized particle sizes
reliable global supply
If you are looking for a reliable supplier, contact our team for product specifications and the latest quotation.
📧 Email: sale@zanewmetal.com
ZHEN AN INTERNATIONAL CO., LIMITED
FAQ
Why is 90% SiC better for steelmaking?
Because it provides higher efficiency, better deoxidation performance, and improved steel quality.
What is the difference between SiC 88% and SiC 90%?
SiC 90% has higher purity and stronger metallurgical performance compared with SiC 88%.
Can 90% SiC replace traditional deoxidizers?
In many cases, it can partially or fully replace materials such as ferrosilicon.
Is 90% SiC more expensive?
It may have a higher unit price, but it offers better overall cost efficiency.
What industries use 90% silicon carbide?
Steelmaking, foundry, and alloy production industries.
