90# Silicon Carbide
An industrial-grade silicon carbide (SiC ≥ 90%) supplied as grains, powders, and ready-to-press granules for refractories, taphole clay, and steelmaking.
90% silicon carbide is an industrial-grade SiC material with a silicon carbide content of at least 90%. With excellent hardness, thermal conductivity, thermal-shock resistance, and high-temperature stability, it is widely used in refractory castables, taphole clay, molten-iron runner materials, steelmaking, and foundry applications.
What it is
What 90% Silicon Carbide Is & Where It Is Used
90% silicon carbide refers to an industrial-grade silicon carbide material with a SiC content of approximately 90% or higher, the remainder being impurities such as free carbon (F.C.), silica (SiO₂), and iron oxide (Fe₂O₃). It is typically produced by high-temperature smelting of quartz sand and petroleum coke, followed by crushing and grading.
Depending on application it is supplied in various particle sizes — 0–1 mm, 0–5 mm, 0–10 mm, and fine powders such as 200 mesh, 1000 mesh, and 1200 mesh. Its balance of hardness, thermal conductivity, and cost makes it the workhorse grade for refractory and metallurgical use.
Applications
Applications
Tap Hole Clay
Core aggregate in anhydrous gunning mix for large and medium blast furnaces, raising slag-erosion and high-temperature strength.
Monolithics
Fills the matrix of castables and ramming mixes, improving thermal-shock stability and erosion resistance.
mortars
Used in refractory mortars to bond brick and shape linings in iron and steel routes.
Key Features
Key Features of 90% Silicon Carbide
90% silicon carbide is supplied in forms engineered for different shaping and feeding routes:
Ready-To-Press (RTP)
RTP granules for direct pressing — excellent flowability, uniform filling, improved molding efficiency.
Sintering Additive Compatibility
Integrated sintering additives improve densification and final properties on request.
Temporary Binder System
Temporary binders raise green strength and shaping stability during pressing.
Tailor-Made Solutions
Custom formulations by PSD, binder system, additives, and forming characteristics.
Available Customization
Custom PSD, RTP granules, submicron powders, sintering and binder systems, OEM packaging.
Documented Supply
Data sheet and third-party inspection (SGS/BV/CCIC) available on request.
Chemical Composition
Chemical Composition
| Grade | SiC (%) | F.C (%) | Fe₂O₃ (%) | H₂O (%) |
|---|---|---|---|---|
| 90 SiC | ≥ 90 | ≤ 2.2 | ≤ 2.3 | ≤ 0.5 |
Particle Size
Standard Grain Sizes
| Particle Size | Approx. Range | Classification | Standard |
|---|---|---|---|
| 3–5 mm | 3000–5000 μm | Coarse Grain | ASTM / DIN |
| 2–3 mm | 2000–3000 μm | Coarse Grain | ASTM / DIN |
| 1–2 mm | 1000–2000 μm | Medium Grain | ASTM / DIN |
| 0.5–1 mm | 500–1000 μm | Medium Grain | ASTM / DIN |
| 0.2–0.5 mm | 200–500 μm | Fine Grain | Custom |
| 0.1–0.5 mm | 100–500 μm | Fine Grain | Custom |
FEPA Abrasive Grades
| FEPA Grade | Average Particle Size | Standard |
|---|---|---|
| F6 | ~3500 μm | FEPA |
| F10 | ~2000 μm | FEPA |
| F35 | ~500 μm | FEPA |
| F50 | ~300 μm | FEPA |
| F80 | ~180 μm | FEPA |
| F100 | ~125 μm | FEPA |
| F200 | ~82 μm | FEPA |
| F325 | ~32 μm | FEPA |
| F500 | ~17 μm | FEPA |
| F800 | ~6.5 μm | FEPA |
| F1200 | ~3 μm | FEPA |
FAQ
90% Silicon Carbide — FAQ
A ≥90% SiC industrial material for refractory castables, taphole clay, runner materials, steelmaking, and foundry — where hardness and thermal stability matter more than ultra-high purity.
0–1, 0–5, 0–10 mm grains, fine powders (200/1000/1200 mesh), and FEPA abrasive grades from F6 to F1200.
RTP granules flow and fill uniformly for direct pressing, raising molding efficiency without extra binders.
Yes — particle size distribution, RTP granules, submicron powders, sintering and temporary-binder systems, and OEM packaging are all customizable.
SGS, BV, and CCIC inspection are acceptable on request, with a documented data sheet.
90% SiC trades some purity for lower cost; it is the economical choice where extreme oxygen control is not required.
Get Started
Specify Your 90% Silicon Carbide
Send your target application, particle size, and packaging needs to FerrumX. The technical team recommends a grade, form, and customization package.
Related: Black Silicon Carbide · Silicon Carbide · Silicon Carbide Grades · Silicon Carbide Lump · Silicon Carbide Grain · Taphole Clay
