Hot Pressed Silicon Carbide Blocks

Anti-static silicon carbide ceramics (SiC ceramics), also known as silicon carbide ceramic or SiC ceramic, are essentially produced by incorporating an ultra-high-purity silicon carbide (SiC) matrix-specifically high-purity silicon carbide (including 4N (99.99% purity) and even higher 5N (99.999% purity) silicon carbide) grades-using specific processes such as uniaxial pressing, hot pressing (hot pressed silicon carbide), or reaction sintering (reaction bonded silicon carbide / reaction sintered silicon carbide). Silicon carbide (SiC / carborundum), whose chemical name is silicon carbide (also known as carburo de silicio, carbure de silicium, siliziumcarbid, etc.), is a wide-bandgap semiconductor with extremely high resistivity in its pure state. Through precise "doping" or composite techniques, continuous conductive networks can be formed at grain boundaries or within grains. This precisely controls the material's volume resistivity from insulator levels (>10^10 Ω·cm) to the range required for antistatic applications (typically 10^4 to 10^9 Ω·cm). This enables it to safely dissipate static charges at a controlled rate, preventing electrostatic buildup, while fully preserving the inherent properties of silicon carbide and advantages of silicon carbide ceramics. It is worth noting that another high-end technical ceramic, silicon nitride (Si3N4), also exhibits outstanding comprehensive material properties and is commonly fabricated into components like counter-rolls or ceramic substrates. 

• High density: The uniaxial pressure applied by the hot pressing process significantly promotes material contraction and pore elimination, usually resulting in a green body with a density close to the theoretical value (>98%), which is the basis for its excellent performance.
• Outstanding mechanical properties: Thanks to high density and fine-grained structure, hot-pressed silicon carbide blanks usually have very high hardness (HRA above 90, HV > 2000), flexural strength (up to 500-700 MPa or even higher), and good fracture toughness.
• Outstanding high-temperature stability: Silicon carbide itself has extremely strong high-temperature strength and can maintain most of its room-temperature strength even at temperatures above 1600°C, with excellent creep resistance.
• Excellent thermal physical properties: It has a relatively high thermal conductivity and a relatively low coefficient of thermal expansion, thus featuring good thermal shock stability and being capable of withstanding drastic temperature changes without cracking easily.
• Outstanding wear resistance and corrosion resistance: It has extremely high hardness and strong resistance to abrasive wear and particle erosion. At the same time, it shows good chemical inertness to most acids, alkalis and molten salts.
• Machinability: As a "preform", it can be subsequently processed into final-shaped components through mechanical machining (such as diamond grinding, laser processing, etc.). The hot-pressed preform itself is usually very hard and is classified as a difficult-to-machine material.

We provide customized Hot Pressed Silicon Carbide Blocks based on client drawings and requirements, including:

• Tailored dimensions and shapes
• Surface finishing options
• Special performance grades (improved thermal conductivity, enhanced corrosion resistance)
• OEM/ODM service available

Our Hot Pressed Silicon Carbide Blocks are widely used in:

• Metallurgical industry: furnace lining, wear parts, protective plates
• Chemical processing: corrosion-resistant structures, reaction chambers
• Semiconductor & electronics: substrates, high-temperature components
• Aerospace & defense: thermal protection systems, structural components
• Energy sector: solar industry, nuclear applications, fuel cell components

For more application-specific recommendations, please contact Superior Ceramics Times Technology Co., Ltd. for technical consultation.

• Exceptional and Stable Antistatic Properties: The built-in conductive network provides reliable static dissipation for components like silicon carbide crystal boats, paddles, and rings in semiconductor manufacturing, protecting sensitive circuits.
• Unparalleled Wear and Corrosion Resistance: Its extreme hardness and chemical inertness make silicon carbide ceramic ideal for bushings, nozzles, seals (mechanical seal silicon carbide), liners, and wear-resistant ceramics in harsh environments.
• Superior High-Temperature and Thermal Management Properties: Excellent thermal shock resistance and high thermal conductivity make it perfect for kiln furniture like rollers and beams, as well as crucibles (silicon carbide crucible), tubes, and heat-intensive components.
• High Strength and Rigidity: Combines mechanical robustness with anti-static function, suitable for structural ceramics, complex ceramic parts, and bespoke ceramic parts requiring precision and stability.
• High Purity and Low Contamination: Utilizing high-purity (4N/5N) silicon carbide as the base material, these ceramics are exceptionally cleanroom-friendly, generating minimal particles and ensuring ultra-low metallic contamination. This makes them essential in the most demanding semiconductor and advanced ceramics applications, such as CVD silicon carbide coated components, silicon carbide substrates, and various silicon carbide ceramic parts. 

We strictly follow ISO 9001 quality management system to ensure consistency:

• 100% raw material inspection
• Advanced hot-pressing production lines
• In-house testing: density, hardness, microstructure analysis
• Third-party certifications (SGS, CE, ROHS available upon request)

Competitive Pricing: Cost-effective solutions with excellent performance-to-price ratio

Bulk Order Discounts: Available for large-volume purchases

Lead Time: Standard sizes available from stock; customized products typically delivered within 15–30 days

Inventory: Commonly used sizes kept in stock for fast delivery

Send us your inquiry today for the latest prices and delivery options.

• Superior Ceramics Times Technology Co., Ltd. is a leading ceramics manufacturer with:
• Factory Area: Over 20,000 m² with advanced hot-pressing equipment
• Annual Capacity: 500+ tons of Hot Pressed Silicon Carbide products
• Export Experience: Serving clients in Europe, North America, Japan, Southeast Asia
• Certifications: ISO 9001, ISO 14001, and multiple international quality approvals

• Fast response to inquiries within 24 hours
• Full technical support and product documentation available
• Professional export packaging: foam-protected, wooden crates, seaworthy standards
• After-sales service: replacement or refund for quality issues

Your satisfaction is our top priority – contact us for product details and quotations.

Q1: What is the maximum operating temperature of Hot Pressed Silicon Carbide Blocks?

A1: Our blocks can withstand continuous working temperatures up to 1600°C.

Q2: Can you supply customized dimensions?

A2: Yes, we provide fully customized sizes and shapes according to drawings.

Q3: Do you provide samples for testing?

A3: Small samples are available upon request for material evaluation.

Q4: How do you ensure consistent product quality?

A4: We strictly follow ISO-certified processes and conduct both in-house and third-party testing.

Q5: What is your typical lead time?

A5: Standard sizes are available from stock; custom products usually take 15–30 days.

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