Why Silicon Carbide Tubes Are the Preferred Choice for Industrial Processes

Silicon carbide is an innovative material capable of revolutionizing industrial processes. This groundbreaking substance stands up well to extreme temperatures, abrasive environments and corrosion while offering exceptional strength and longevity.

Silicon carbide tubes boast second only to diamond in terms of hardness and can transport chemicals without degradation – two features which make them perfect for power industry components.


Silicon carbide (SiC) is an extremely hard material with both polycrystalline and single crystal forms available. It has a Mohs hardness rating of 9, which falls just short of diamond’s. Due to this hardness and resistance to chemical corrosion and high temperatures, SiC makes an ideal ceramic material for applications requiring strength and durability.

Sintered silicon carbide forms a very dense and strong material that can be formed into tubes, rods and pellets. American Elements provides this advanced material in various standard diameters along with other machined or cast shapes for various machined and cast applications as well as customized compositions tailored specifically to specific applications, and targets for thin film deposition.

Silicon carbide can withstand harsh environments and operate under difficult circumstances, making it ideal for power industry applications. This is particularly evident when producing coal-fired power plants where tube performance and longevity is vital for plant efficiency and safety. Silicon carbide also boasts excellent resistance against corrosion, abrasion, thermal shock and thermal fatigue making it suitable for boiler linings or refractory linings in boilers or refractories.

As a refractory material, silica fume can be utilized in blast furnaces, kilns and muffles as a refractory product. Furthermore, industrial furnaces as well as non-ferrous metal smelting/sintering applications benefit greatly from its use as well. Furthermore, its superior abrasion resistance surpasses that of cast iron while three times that of alumina makes this ideal for impellers, pump rooms, cyclones and pipelines.

Mohs hardness rating near that of diamond makes alumina the hardest synthetic material available and its toughness and durability make it ideal for use as an abrasive in grinding wheels, paper abrasive cloth oil shale mineral products as well as electrical heating elements. Alumina’s low coefficient of expansion, good conductivity and resistance to chemical attack from aggressive materials makes it an attractive alternative to traditional semiconductors for high temperature applications.


Silicon carbide is one of the strongest and hardest industrial ceramics on the market. It boasts exceptional durability in tough conditions like high temperatures, chemical corrosion and extreme wear-and-tear. Given this impressive lifespan, silicon carbide tubes have quickly become one of the go-to choices among industries striving to expand productivity and innovation.

Silicon carbide manufacturing can be complex, yet its results are vastly beneficial to industry. This advanced ceramic is crucial for use in sectors requiring uncompromised performance in extreme operating conditions – metallurgy, abrasives and refractories industries to name just three examples – revolutionizing how these industries function while constantly expanding what’s possible for them.

Corrosion resistance is an integral characteristic of any industrial tube, and silicon carbide tubing is no exception. Due to its ability to withstand harsh chemicals and environments, it has quickly become the go-to choice among many industries. Furthermore, silicon carbide’s mechanical strength rivals even that of ceramic materials!

CG Thermal’s Umax advanced ceramic shell and tube heat exchangers use alpha sintered silicon carbide (SiC) tubes with either PTFE or PFA lining to provide an efficient heat transfer system for chemical processes that are hard to clean, such as hydrochloric, sulfuric and nitric acids, alkalis chlorinated compounds etc. without the need for costly linings or coatings.

Silicon carbide tubes stand out as being exceptionally durable given that their resistance to wear-and-tear rivals that of diamonds. This makes them an excellent choice for high-speed, high-pressure applications where other materials could quickly erode away or fracture.

Silicon carbide is often utilized as a refractory material in industrial furnaces due to its extremely high melting point and low thermal expansion rate, making it the ideal material for components that will be exposed to extremely high temperatures and harsh environments such as tunnel kilns, shuttle kilns, roller kilns and other types of industrial furnaces.


Silicon carbide makes an excellent material for tubes, as its hardness allows it to withstand both high temperatures and chemicals that cause corrosion, as well as mechanical stresses imposed during oil drilling operations. Silicon carbide also has the added advantage of resisting cracking pipes during extraction processes due to its higher temperature tolerance than many metal alloys; furthermore its strength makes it suitable as protective casings for equipment.

Thermal conductivity measures the ability of materials to transfer heat, and its value depends both on their temperature and distance between their points of origin. It’s typically measured in Wm-1K-1 and determined by multiplying thermal emissivity (e) times specific heat (l). Pure materials usually exhibit high thermal conductivities while alloys often exhibit reduced conductivities due to impurities that affect its purity;

Silicon carbide stands out among ceramic materials due to its excellent thermal conductivity; comparable to copper. Silicon carbide tubes can be manufactured through several techniques; most often by sintered silicon carbide or reaction bonded silicon carbide processes that involve dry pressing and extrusion to produce dense ceramic products that can endure harsh environments.

These hardy ceramics can be found in various applications, from components of chemical processing equipment to lining furnaces refractorily. Their excellent corrosion resistance makes them popular among oil and gas industry workers while their ability to withstand both high temperatures and chemicals makes them popular for manufacturing ceramic insulators, construction ceramics and sanitary ware.

Silicon carbide stands out for its exceptional strength and wear resistance as well as its thermal conductivity and low elastic modulus, as well as being non-porous so as to withstand large amounts of stress before cracking. Furthermore, its thermal shock resistance is determined by factors like its elastic modulus/coefficient of expansion/thermal conductivity/environmental medium size/external mechanical loadings.

Thermocouple Protection

Thermocouple tubes protect thermocouple sensors by creating a physical barrier between their probe and its environment, thus reducing risk or harm to it, as well as providing accurate temperature records. They must, however, withstand both high temperatures and chemically aggressive environments – something silicon carbide excels at doing thanks to its refractory qualities which allow it to resist extreme heat without expanding and can come either oxide-bonded or nitride-bonded forms for production.

Silicon carbide tubes offer superior thermal properties and are an affordable and long-term solution to protecting temperature sensor shielding. While stainless steel tubing may provide adequate thermal properties, its lifespan can become compromised over time. Silicon carbide tubes offer greater thermal stability while being more cost effective overall.

Silicon carbide tubes from ACE come in many sizes and shapes to provide you with an ideal match for any application. You can order individually or bulk orders, with delivery generally occurring one to four weeks from ordering date.

Silicon carbide tube protection is required in high-temperature environments such as gas flames. However, unlike bare wire thermocouples, silicon carbide tubes offer better refractoriness and spalling resistance, making them more durable while remaining immune to zinc, aluminum, lead acidity as well as alkalis.

Silicon carbide provides more than just thermal protection – it also ensures accurate readings from thermocouples by serving as an insulated tube that shields them from harsh environmental elements, like direct heat or chemical compounds that could alter readings and lead to inaccurate temperatures readings.

Insulating properties make tubes ideal for applications where beads are exposed to extreme temperature variations, like Hindasageri et al. [1]’s study on gas flame thermocouples with no insulation revealed that bead penetration should reach at least 10mm into flame to minimize wire convection loss and achieve stable temperature readings; and their effect on bead temperature readings depends on conductivity, emissivity, and geometry properties of tubes.

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