Silicon Carbide 88/90: Specifications, Uses and Buying Guide
Silicon Carbide 88/90 is a cost-efficient metallurgical silicon carbide grade widely used as a furnace additive in steel, iron, and refractory operations. Instead of targeting ultra-high purity performance, this grade is engineered for reaction value, reduction strength, and process economy. For many industrial furnaces, it delivers an effective balance between silicon yield, carbon contribution, and material cost.
This guide explains Silicon Carbide 88/90 from a procurement and process perspective - including technical specifications, real industrial uses, and how buyers should evaluate suppliers. ZhenAn supplies Silicon Carbide 88/90 to global metallurgical customers with controlled sizing and stable batch quality.
Technical Specifications of Silicon Carbide 88/90
Silicon Carbide 88/90 (SiC 88/90) belongs to the metallurgical SiC class and is typically produced for high-temperature reaction environments.
Typical Chemical Specification Range
| Parameter | Typical Range |
|---|---|
| SiC | 88–90% |
| Fixed Carbon | 2–6% |
| SiO₂ | 3–6% |
| Fe₂O₃ + Al₂O₃ | Controlled |
| Moisture | Low |
Actual values vary by production route and raw material source. Reliable suppliers provide batch lab reports for each shipment.
Standard Supply Sizes
Industrial buyers usually order Silicon Carbide 88/90 in:
0–5 mm
1–10 mm
10–50 mm
Custom crushed grades
Metallurgical powder
ZhenAn offers size screening based on furnace charging method and feeding equipment.
How Silicon Carbide 88/90 Functions in High-Temperature Processes
Unlike passive raw materials, Silicon Carbide 88/90 participates directly in furnace chemistry.
Reaction Contributions
In molten systems, SiC 88/90 provides:
Oxygen reduction activity
Silicon recovery contribution
Carbon input
Slag chemistry adjustment
Thermal efficiency support
Because both silicon and carbon are released through reaction, Silicon Carbide 88/90 often replaces part of traditional alloy additions.
Major Industrial Uses of Silicon Carbide 88/90
Steel Production Furnaces
Steel plants use Silicon Carbide 88/90 as a working additive rather than a structural material.
Common uses include:
Melt deoxidation
Reduction support
Slag foaming assistance
Alloy cost optimization
Tap chemistry trimming
Electric arc and induction furnace operators often include metallurgical silicon carbide in their additive mix to improve reaction efficiency per ton of steel.
Iron Casting and Melting Shops
Cast iron producers use Silicon Carbide 88/90 for melt conditioning and chemistry balance.
Typical functions:
Silicon adjustment
Carbon supplementation
Oxidation loss reduction
Melt stabilization
Pouring performance improvement
In iron melting, Silicon Carbide 88/90 is valued for predictable furnace behavior and economic dosing.
Refractory and High-Temperature Materials
Refractory manufacturers incorporate Silicon Carbide 88/90 into selected product formulas where cost control matters.
Applications include:
General refractory bricks
Castable systems
Protective layers
Heat-resistant components
Here, SiC 88/90 is used as a functional additive rather than a high-purity structural grain.
Silicon Carbide 88/90 vs Higher SiC Grades
Industrial buyers frequently compare grades before purchase.
Choose SiC 88/90 When
Furnace metallurgy is the target use
Reaction value is more important than purity
Bulk addition is required
Budget efficiency matters
Alloy substitution is planned
Choose Higher SiC Grades When
Ceramic performance is required
Abrasive strength is critical
Electrical properties matter
Impurity limits are strict
Grade selection should match process objective, not just SiC percentage.
Buying Guide - What Professional Buyers Should Check
When sourcing Silicon Carbide 88/90, experienced buyers evaluate more than just SiC content.
Quality Control Factors
Request from suppliers:
Batch chemical analysis report
Particle size distribution test
Moisture certificate
Bulk density data
Source process description
Consistency history
Stable metallurgy performance depends on batch repeatability.
Particle Size Suitability
Incorrect sizing is a common purchasing mistake.
Match size to:
Furnace type
Feeding method
Reaction timing
Dissolution requirement
Dust tolerance
ZhenAn helps customers select Silicon Carbide 88/90 sizing based on furnace operation parameters.
Packaging and Logistics
Check available packaging formats:
1 MT jumbo bags
25 kg bags inside big bags
Bulk loading options
Moisture-protected packaging
For export shipments, packaging stability affects usable yield on arrival.
Supplier Capability Indicators
Reliable Silicon Carbide 88/90 suppliers typically offer:
Consistent lot chemistry
Size grading control
Export documentation experience
Industrial customer references
Technical usage guidance
ZhenAn supplies metallurgical silicon carbide with controlled production and international shipment support.
Contact: market@zanewmetal.com
Common Purchasing Mistakes to Avoid
Industrial buyers sometimes face performance issues due to preventable errors:
Buying by price only without chemistry reports
Ignoring size distribution
Mixing abrasive grade with metallurgical grade
Not matching grade to furnace goal
Skipping moisture checks
A correct Silicon Carbide 88/90 purchase decision considers process fit + supplier stability + test data.
FAQ - Silicon Carbide 88/90
Is Silicon Carbide 88/90 considered metallurgical grade?
Yes. It is classified as metallurgical silicon carbide used in furnace reactions.
Does SiC 88/90 always replace ferrosilicon?
It can partially replace ferrosilicon in many steel and iron melting operations, depending on process design.
Is higher SiC content always more economical?
Not necessarily. Cost per effective reaction unit is the correct comparison metric.
Can Silicon Carbide 88/90 be customized in size?
Yes. Industrial suppliers like ZhenAn provide multiple screened size options.