Introduction of Silicon Carbide Rods

Silicon Carbide Rods are high-performance ceramic rods made from Silicon Carbide (SiC) with excellent resistance to high temperatures, abrasion, and chemical stability. Silicon carbide is an advanced engineering ceramic material known for its high hardness, high thermal conductivity, and thermal shock resistance. Widely used in high-temperature, corrosive, and high-wear industrial applications, silicon carbide rods are efficient, durable, and reliable engineering components.

Features of Silicon Carbide Rods

High hardness and wear resistance: Silicon carbide has a high hardness, second only to diamond and cubic boron nitride, which can effectively resist wear and prolong service life.

Excellent high-temperature resistance: able to work stably in high-temperature environments above 1600°C.

High thermal conductivity: excellent thermal conductivity, suitable for scenes requiring rapid heat dissipation.

Thermal shock resistance: able to withstand rapid temperature changes and suitable for frequent heating and cooling conditions.

Chemical Stability: Extremely resistant to acids, alkalis, and most molten metals.

Low coefficient of thermal expansion: good dimensional stability during temperature changes, reducing the risk of cracking due to thermal stress.

High mechanical strength: high flexural strength and fracture toughness, able to withstand large mechanical stresses.

Electrical insulation: Maintains good electrical insulation properties at high temperatures and is suitable for electronic and electrical applications.

Parameters of Silicon Carbide Rods

Parameter	Specification Details
Material	Silicon Carbide (SiC)
Grade	Various grades available (e.g., Sintered SiC, Reaction-Bonded SiC, Recrystallized SiC)
Purity	≥ 98% SiC
Hardness (Vickers)	~2500-3000 HV
Density	~3.10 to 3.21 g/cm³ (varies by grade)
Flexural Strength	400-700 MPa (depending on grade and manufacturing process)
Compressive Strength	2500-4000 MPa (depending on grade and manufacturing process)
Elastic Modulus	400-450 GPa
Thermal Conductivity	120-270 W/m·K (varies by grade and temperature)
Coefficient of Thermal Expansion (CTE)	4.5-4.7 x 10^-6 /°C (at room temperature)
Temperature Resistance	Up to 1600°C in air, higher in inert atmospheres
Corrosion Resistance	Excellent resistance to most acids, alkalis, and molten metals
Electrical Conductivity	Can be electrically conductive or insulating (depends on doping and grade)
Magnetic Properties	Non-magnetic
Fracture Toughness	3.5-5.0 MPa·m^0.5 (depending on grade)
Abrasion Resistance	Excellent, minimizes wear in abrasive environments
Dimensional Stability	High, minimal thermal expansion and contraction
Surface Finish	Available in various finishes (ground, polished, etc.)
Length Range	Typically from 50 mm to 3000 mm (custom lengths available upon request)
Diameter Range	Typically from 5 mm to 200 mm (custom diameters available upon request)
Tolerance	±0.1 mm to ±0.5 mm (varies by size and application requirements)
Applications	Furnace components, kiln furniture, nozzles, heat exchangers, wear-resistant parts, etc.
Manufacturing Process	Sintering, reaction bonding, recrystallization, hot pressing, etc.
Coating Options	Available, e.g., TiN, DLC, ceramic coatings (for enhanced properties)

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Applications of Silicon Carbide Rods

High-temperature industry: used as heating elements, support rods and thermocouple protection tubes in high-temperature furnaces; in the aerospace field, for thermal protection systems and engine components.

Electronics and semiconductor industry: used as insulating and support rods in semiconductor manufacturing equipment; in high-temperature furnaces and vacuum equipment as high-temperature-resistant components.

Chemical industry: For stirring rods, support rods, and reactor linings in corrosive media as corrosion-resistant components in high-temperature catalytic reactions and exhaust gas treatment equipment.

Machinery and tools industry: for wear-resistant parts of high-precision machinery and equipment, such as bearings, guide rails, and cutting tools, as well as wear-resistant guide rods and guide rollers in the textile and paper industries.

Energy sector: electrolyte support rods for solid oxide fuel cells (SOFC), as well as high-temperature resistant support and insulation components in solar and nuclear energy equipment.

Medical and laboratory equipment: support rods and reaction rods for high-temperature laboratory equipment, as well as high-temperature and corrosion-resistant components in medical equipment, such as dental tools and surgical instruments.

Environmental protection field: used as high temperature and corrosion resistant rods in exhaust gas treatment and catalytic reaction; as corrosion resistant conveying rods in sewage treatment.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Silicon Carbide Rods please feel free to contact us or click on the needed products to send an inquiry. 

Payment Term

T/T, Western Union, Paypal, Credit Card etc.

Packing and Storage

The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.

Shipment Term

By air, by sea, by express, as customers request.

FAQs of Silicon Carbide Rods

Question 1: What are the advantages of silicon carbide rods over traditional metal rods?

Answer: Silicon carbide rods offer several significant advantages over traditional metal rods: Higher hardness and wear resistance: Silicon carbide is one of the hardest materials known, far exceeding most metals, making it more durable under abrasive conditions. Better thermal conductivity: Silicon carbide has an extremely high thermal conductivity, making it suitable for applications that require efficient heat dissipation. Lower density: Compared to many metals, silicon carbide rods are lighter, helping to reduce equipment weight and making them particularly suitable for weight-sensitive applications such as aerospace and automotive.Excellent corrosion resistance: Virtually unaffected by most chemicals, making it particularly suitable for use in corrosive environments. Good electrical insulation: maintains good electrical insulation properties at high temperatures, making it suitable for electrical insulation applications.

QUESTION 2: Can Silicon Carbide rods withstand rapid temperature changes?

Answer: Silicon carbide rods have excellent thermal shock resistance and are able to maintain structural stability in the face of rapid temperature changes. This is because silicon carbide possesses a low coefficient of thermal expansion and high fracture toughness, which effectively resists stresses caused by temperature fluctuations. In addition, the high thermal conductivity of silicon carbide helps to distribute heat quickly and evenly, reducing the risk of localized overheating. Nonetheless, to optimize this property, extreme temperature surges should be avoided as much as possible, especially during cold starts or sharp stops, to prevent potential thermal cracking. Proper design and operational management can help maximize the thermal shock resistance of silicon carbide rods.

QUESTION 3: In what special environments do silicon carbide rods perform particularly well?

Answer:  Because of their unique physical and chemical properties, silicon carbide rods perform well in special environments such as high-temperature environments, corrosive environments, environments with severe wear and tear, and environments with high electrical insulation requirements. This is due to the following reasons: First of all, silicon carbide rods are able to withstand extremely high temperatures (up to 2000°C), which makes them suitable for use in high-temperature furnaces, heating elements, and other applications that require continuous high-temperature operation. Additionally, in the chemical industry, silicon carbide rods are able to resist a variety of strong acids, alkalis, and other corrosive chemicals to ensure a stable long-term operation. Furthermore, due to its extremely high hardness and wear resistance, silicon carbide rods are ideally suited for applications under highly abrasive conditions, such as wear parts in mining machinery. Finally, silicon carbide rods maintain good electrical insulation properties at high temperatures, making them suitable for power electronic equipment and electrical engineering applications with stringent requirements for electrical insulation.

Question 4: How do silicon carbide rods affect the overall performance of mechanical equipment?

Answer: Using silicon carbide rods as a key component can significantly improve the overall performance of mechanical equipment. Firstly, efficiency is improved. The high thermal conductivity and low density of silicon carbide rods help reduce heat buildup and weight burden, thereby increasing the efficiency of mechanical systems. Secondly, enhanced durability. The high strength and durability of silicon carbide rods enable mechanical equipment to maintain high performance for longer periods of time, reducing downtime and maintenance costs. Thirdly, reduce noise. Silicon carbide materials have sound-absorbing properties, which can help reduce the noise generated by the operation of mechanical equipment and improve the working environment. Fourth, optimize design flexibility; the lightweight and excellent mechanical properties of silicon carbide rods allow engineers to carry out more compact and efficient designs to meet the needs of modern industry for miniaturization and high performance.

Question 5: What is the role of silicon carbide rods in the machine and tool industry?

Answer: In the machinery and tooling industry, silicon carbide rods are mainly used in the following areas: Wear-resistant parts, which are used in bearings, guide rails, and cutting tools for high-precision machinery and equipment to extend service life. Wire guide rods and guide rollers: In the textile and paper industry, wear-resistant wire guide rods and guide rollers improve productivity. High-speed rotating equipment: used as support rods for high-speed rotating equipment to reduce friction and wear.