Highland Refractory provides ultra-high-performance Silicon Carbide solutions engineered for extreme thermal conductivity and superior erosion resistance.
We specialize in Nitride-bonded (NBSC), Oxide-bonded (OSiC), and Reaction-sintered (SiSiC) grades with SiC content ranging from 85% to 98%. Designed for waste incinerators, ceramic kilns, and non-ferrous metallurgy,
our SiC bricks and custom plates ensure exceptional thermal shock stability up to 1550°C. Direct factory supply with high-precision sizing (±0.5mm). Request your 2026 technical catalog and bulk quote in 2 hours.
High-Performance Refractory Solution for Extreme Industrial Furnaces
Silicon carbide bricks (SiC bricks) are advanced refractory materials made primarily from high-purity silicon carbide (SiC) combined with different bonding systems such as silicon nitride, oxidation bonding, reaction bonding, clay bonding, or alumina bonding.
Unlike conventional refractory bricks, silicon carbide bricks do not rely on traditional sintering mechanisms. Instead, they achieve their strength through chemical bonding or reaction bonding processes, which result in a dense, durable, and highly stable structure suitable for extreme industrial environments.
Due to their exceptional combination of thermal conductivity, mechanical strength, wear resistance, and chemical stability, silicon carbide bricks are widely used in blast furnaces, ceramic kilns, non-ferrous metal furnaces, incinerators, and high-temperature industrial systems.
Highland Refractory supplies a full range of engineered SiC brick solutions designed for different furnace conditions and operational requirements.
Silicon carbide bricks are refractory materials manufactured using silicon carbide as the primary aggregate. Because silicon carbide is a covalently bonded compound, it does not behave like traditional ceramic materials during firing.
Instead of sintering, SiC bricks are formed through special bonding mechanisms, including:
These bonding methods create a strong, dense, and chemically stable structure, allowing the bricks to perform reliably in harsh thermal and chemical environments.
Key Material Characteristics:
Silicon carbide bricks are not a single material but a family of engineered refractory products, each designed for specific industrial conditions.
Silicon nitride bonded SiC bricks combine silicon carbide with silicon nitride as a bonding phase.
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Reaction bonded SiC bricks are formed by infiltrating silicon into a porous SiC structure, creating a dense composite.
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Oxidation bonded SiC bricks are produced through controlled oxidation reactions that form bonding phases.
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These bricks use clay as a bonding agent with SiC aggregates.
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This type combines SiC with high alumina materials.
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Silicon carbide bricks are widely preferred in industrial furnaces because of their multi-functional performance advantages.
SiC bricks maintain structural integrity under extreme load conditions, making them suitable for:
Unlike most refractory materials, silicon carbide efficiently transfers heat.
Benefits:
SiC bricks can withstand rapid heating and cooling cycles without cracking.
This makes them ideal for:
Silicon carbide resists attack from:
This significantly extends service life in harsh environments.
Although SiC bricks have higher initial cost, they offer:
Typical industrial performance ranges include:
| SiC content | 45% – 90%+ |
| Al₂O₃ content | 0% – 55% (depending on type) |
| Bulk density | 2.3 – 2.7 g/cm³ |
| Apparent porosity | ≤ 22% |
| Cold crushing strength | ≥ 80 – 120 MPa |
| Refractoriness under load | up to 1700°C |
These values vary depending on bonding system and application requirements.
Silicon carbide bricks are widely used across multiple high-temperature industries.
👉 Provides long service life under high thermal stress and abrasion.
👉 Ensures flatness and thermal stability during firing cycles.
👉 Excellent resistance to chemical corrosion.
👉 Performs reliably in aggressive chemical environments.
Choosing the right SiC brick depends on operating conditions.
Highland Refractory is a professional manufacturer of advanced refractory materials with over 30 years of production experience.
silicon carbide brick production line[/caption]
We provide:
Our silicon carbide bricks are exported worldwide and used in:
We support:
Silicon carbide bricks represent one of the most advanced refractory solutions for modern high-temperature industries. With superior thermal conductivity, mechanical strength, and chemical resistance, they outperform traditional refractory materials in extreme working conditions.
By selecting the correct SiC brick type—whether nitride bonded, reaction bonded, or oxidation bonded—industries can significantly improve furnace efficiency, extend service life, and reduce maintenance costs.
For high-performance furnace applications, silicon carbide bricks remain the benchmark solution for durability and thermal stability.
Under normal operating conditions within rated temperature, SiC bricks typically last 2-5 years. In milder environments with stable operation, service life can exceed 8 years, while severe slag corrosion or extreme thermal cycling may shorten lifespan.
Yes, we support full customization including standard sizes, special-shaped bricks, arch bricks, and custom profiles. We can also produce according to customer drawings or furnace design requirements for precise installation fit.
SiC bricks have 2-3 times higher thermal conductivity, better thermal shock resistance, and superior wear/chemical resistance than high alumina bricks. High alumina bricks have lower upfront cost and are suitable for less demanding medium-temperature zones.
Yes, our engineering team provides full technical support including lining design solutions, installation guidance, on-site commissioning and after-sales maintenance advice to ensure optimal performance and service life of the refractory lining.
Standard grade SiC bricks are usually shipped within 7-15 working days for bulk orders. Custom-shaped or special formula products require 20-35 days of production lead time depending on order quantity and technical requirements.
Contact our refractory engineering team for professional material selection, detailed technical datasheets and transparent project quotation tailored to your working conditions.
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High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
Aluminum content 75%-80% Refractory 1770℃ or above
Silicon carbide plates are mainly composed of silicon carbide (SiC) as the aggregate (with a content usually ≥ 80%).
