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Silicon Carbide Parts

Silicon carbide part is made of silicon carbide materials, silicon carbide part has properties remarkably similar to those of diamond – it is one of the lightest, hardest, and strongest technical ceramic materials and has exceptional thermal conductivity, resistance to acids, and low thermal expansion. Silicon Carbide is an excellent material to use when physical wear is an important consideration because it exhibits good erosion and abrasive resistance, making it useful in a variety of applications such as spray nozzles, shot blast nozzles and cyclone components.

Product Features:

Extremely high hardness
Wear resistant
Corrosion resistant
Lightweight – Low Density
High thermal conductivity
High Young’s modulus
Low thermal expansion coefficient
Chemically and thermally resistant
Outstanding thermal shock resistance
Refractive index greater than a diamond

Silicon carbide can be machined in green, biscuit, or fully dense states. While in the green or biscuit form it can be machined relatively easily into complex geometries. However, the sintering process that is required to fully densify the material causes the silicon carbide body to shrink approximately 20%. This shrinkage means that it is impossible to hold very tight tolerances when machining Silicon Carbide pre-sintering. In order to achieve very tight tolerances, fully sintered material must be machined/ground with diamond tools.  In this process a very precise diamond coated tool/wheel is used to abrade away the material until the desired form is created. Due to the inherit toughness and hardness of the material, this can be a time consuming and costly process.

Like both oxides and nitrides, silicon carbide is a very hard wearing material which requires diamond-grinding methods to process once fired. Although not exclusively, carbides are used mainly for applications in which physical wear is a major consideration.

Product Parameters:

Properties Units Value
Density, r g/cm3 3.21
Color dark gray
Water Absorption % @R.T. 0.0
Hardness Moh’s 9 – 10
Hardness knoop (kg/mm2) 2800
Compressive Strength MPa @ R.T. 1725 – 2500
Tensile Strength MPa @ R.T. 310
Modulus of Elasticity
(Young’s Mod.)
GPa 476
Flexural Strength (MOR) MPa @ R.T. 324
Fracture Toughness, KIc MPa x m1/2 4.0
Max. Use Temperature
(* denotes inert atm.)
ºC 1650
Thermal Shock Resistance DT (ºC) 350 – 500
Thermal Conductivity W/m-K @ R.T. 41
Coefficient of Linear Thermal Expansion, al mm/m-ºC (~25ºC through ±1000ºC) 5.12
Specific Heat, cp cal/g-ºC @ R.T. 0.15
Dielectric Constant 1MHz @ R.T. 10.2
Electrical Resistivity Wcm @ R.T. 108

Application and After-Sales Service:

Applications:

Valve seats
Sliding bearings
Mechanical seals
Plungers
Seal rings (water ring pumps)
Wear parts (thread guides)
Kiln furniture crucibles
Burners
Blast nozzles
Heat exchangers
Our silicon carbide parts/components are exported to USA, Canada, Europe, and South America and Southeast Asia.

After-sales service:

Accept any repair of the product, help to improve technology for customer. And also provide long-term technical help and support for you.

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