Silicon Carbide Heating Rod

  • [Introduction]: The silicon carbide heating rod is a rod-shaped non-metallic high-temperature heating element. It takes high-quality green silicon carbide as the main raw material, and is processed through billet forming, high-temperature silicidation and recrystallization. Compared with metal heating parts, this rod features high working temperature, oxidation resistance, corrosion resistance, long service life and slight deformation. It is also easy to install and maintain.
  • Our silicon carbide heating rods adopt advanced cold-end production technology. They have ideal resistance matching between hot and cold ends, which saves energy and prolongs service life. This technology also prevents furnace damage caused by overheated cold ends.
  • [Size]: Dimensions can be customized
ItemUnitData
RBSiC(SiSiC)NBSiCSSiCRSiCOSiC
SiC content%857599≥99≥90
Free silicon content%150000
Max service temperature13801450165016201400
Densityg/cm33.022.75-2.853.08-3.162.65-2.752.75-2.85
Open porosity%013-15015-187-8
Bending strength  20℃Mpa250160380100/
Bending strength 1200℃Mpa280180400120/
Modulus of elasticity  20℃Gpa330580420240/
Modulus of elasticity 1200℃Gpa300//200/
Thermal conductivity   1200℃W/m.k4519.6100-12036.6/
Coefficient of thermal expansionK-1×10-64.54.74.14.69/
HVkg/mm22115/2800//
Maximunm operating temperature (℃)Density(g/cm3)Heat conduction [W/(m℃)]Specific heat capacity[KJ/(kg℃)]
15002.2-2.423.260.71
Resistivity (Ω-mm2/m)Thermal expansion coefficient (20-1500℃)(×10-6/℃)Tensile strength (MPa)Flexural strength(MPa)
1000-2000539.2-4970-90
DiameterHeating zone lengthCold zone lengthOverall lengthRange of resisitance
14mm100-500mm150-350mm400-1200mm0.7-5.6 ohms
16mm200-600mm150-350mm500-1600mm0.7-4.4 ohms
18mm200-800mm150-400mm500-1600mm0.7-5.8 ohms
20mm200-800mm200-600mm600-2000mm0.6-6.0 ohms
25mm200-1200mm250-700mm700-2600mm0.4-5.0 ohms
30mm300-2000mm250-800mm800-3600mm0.4-4.0 ohms
35mm400-2000mm250-800mm900-3600mm0.5-3.6 ohms
40mm500-2700mm250-800mm1000-4300mm0.5-3.4 ohms
45mm500-3000mm250-750mm1000-4500mm0.3-3.0 ohms
50mm600-2500mm300-750mm1200-4000mm0.3-2.5 ohms
54mm600-2500mm300-750mm1200-4000mm0.3-3.0 ohms
Maximum temperature and the surface load of silicon carbide element in a different atmosphere
AtmosphereUsing temperature (℃)Elements surface load (W/cm2)
Ammonia/Hydrogen13004.6
Air15004.0
Nitrogen14004.6
Carbon dioxide15003.8
Carbon monoxide15303.8
Water vapor12004.6
Hydrocarbons13203.1
Sulfur/sulfur dioxide13203.8
Vacuum12003.8
Halogen7003.8

Silicon carbide heating rods are widely applied to high-temperature electric furnaces and heating equipment. They serve industries like magnetic materials, powder metallurgy, ceramics, glass, metallurgy and machinery.

The two packing methods we use are plywood box packing and solid wood packing, with the solid wood box requires a fumigation certificate. Depending on the various products, we will tailor the proper packaging box; Plastic foam measuring 2 cm to 3 cm thick is placed within the box and secured with row nails. To maintain the products safety during shipment, packing tape is typically used.

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