SiC 70% & 80% Granular Silicon Carbide
Metallurgical additives for foundry production, cast-iron treatment, steel deoxidation and carbon adjustment. Silicon carbide supplies silicon and carbon while participating in metallurgical reactions during molten-metal treatment.
Product Specifications
| Item |
SiC 70% Grade |
SiC 80% Grade |
| Product |
Granular Metallurgical Silicon Carbide |
Granular Metallurgical Silicon Carbide |
| SiC Content |
70% grade |
80% grade |
| Form |
Granules |
Granules |
| Main Function |
Carbon and silicon addition, deoxidation |
Carbon and silicon addition, deoxidation |
| Main Applications |
Foundry, cast iron, furnace treatment |
Foundry, steelmaking, furnace treatment |
| Particle Size |
Application-specific |
Application-specific |
Chemical Composition
SiC content differentiates the 70% and 80% grades. For an 80% SiC steelmaking product, typical specifications include SiC ≥80%, SiO₂ ≤10%, free carbon ≤10%, Fe₂O₃ ≤1.0%, S ≤0.05% and moisture ≤1%. Buyers should specify required SiC level and relevant impurity limits according to their foundry process.
Size and Form
Granular SiC is selected according to required charging and dispersion characteristics. Common particle size ranges include 0-10 mm, 1-10 mm, 0-3 mm, and 0-5 mm for various metallurgical applications.
Product Characteristics and Function
Carbon Addition
SiC supplies carbon to the melt for carbon adjustment in cast-iron and steelmaking processes.
Silicon Addition
The silicon component provides an additional source of silicon for melt chemistry adjustment.
Deoxidation
Granular SiC is used for deoxidation in steel and foundry treatment applications.
Foundry Treatment
SiC supports cast-iron treatment and has been associated with nucleation and graphite-related effects in foundry applications.
Applications
- Foundry production of gray, ductile and malleable cast iron
- Cast iron carbon adjustment
- Steel deoxidation
- Furnace treatment in induction and electric furnaces
Product Comparison
| Factor |
SiC 70% Granules |
SiC 80% Granules |
| SiC Content |
70% |
80% |
| Form |
Granular |
Granular |
| Carbon Addition |
Applicable |
Applicable |
| Silicon Addition |
Applicable |
Applicable |
| Foundry Use |
Applicable |
Applicable |
| Deoxidation |
Applicable |
Applicable |
Technical Information
For foundry procurement, important parameters include:
- SiC content
- Free carbon
- Particle-size distribution
- Moisture
- Iron and oxide impurities
- Sulfur and phosphorus where relevant
- Furnace type and charging position
- Target carbon and silicon levels
Buyer Specification Checklist
| Requirement |
Buyer Information |
| Grade |
SiC 70% or SiC 80% |
| Form |
Granules |
| SiC Content |
Required grade |
| Size |
Required particle range |
| Application |
Foundry, cast iron or steel treatment |
| Quantity |
Required quantity |
| Packing |
Required packaging |
| Destination |
Port / country |
| Documents |
COA, SDS and applicable inspection documents |
Quality and Documentation
Purchasing specifications should clearly identify SiC content, particle size and controlled impurities. Certificate of Analysis (COA) documents chemical analysis, while SDS and packing information support plant handling and logistics.
Packing and Delivery
Granular material is packed in industrial bulk bags and heavy-duty bags to limit material loss during transportation. Final packing is selected according to quantity, handling equipment and destination requirements.
Frequently Asked Questions
What is SiC 70% granular silicon carbide used for?
Metallurgical source of silicon and carbon in foundry and furnace treatment applications.
What is SiC 80% granular silicon carbide used for?
Foundry and steelmaking applications including deoxidation, silicon adjustment and carbon addition.
Can granular SiC be used as a carburizer?
Yes, silicon carbide functions as a carburizer as well as a silicon additive and deoxidant.
Can SiC 70% be used for steelmaking?
Yes, when SiC content and impurity profile are compatible with the target steelmaking process.
What particle sizes are available?
Common sizes include 0-10 mm, 1-10 mm, 0-3 mm, and 0-5 mm for steel-treatment applications.
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