Machining / Grinding Silicon Carbide Ceramics

CiDRA® Precision Services, LLC has years of experience manufacturing micron level tolerance products from Silicon Carbide ceramics. We leverage our in-depth dicing, drilling, milling, grinding, and polishing capability to manufacture the highest quality Silicon Carbide products.

Whether you need prototypes or volume production, CiDRA® Precision Services, LLC is here to help. Please contact us to discuss your applications.

About Silicon Carbide Ceramics

Silicon Carbide (SiC) is among the hardest and highest corrosion resistance ceramics, and possesses some of the best high temperature properties of all ceramics. As a result, Silicon Carbide excels in applications requiring high temperature wear and chemical resistance.

The material properties of Silicon Carbide vary considerably for different methods of fabrication (sintered, reaction bonded, hot pressed, or CVD material). Though more expensive to produce, CVD material is the purest and allows for tailoring certain properties like electrical resistivity. It can have very high thermal conductivity.

Silicon Carbide Applications

  • Electrodes
  • Exhauster bushings
  • Nozzles

Silicon Carbide Properties

Units

Silicon Carbide (Reaction Bonded)

Silicon Carbide (Sintered)

Silicon Carbide (Hot Pressed)

Silicon Carbide (Hot Isostatic Pressed)

Silicon Carbide (CVD)
Max Use Temperature
(No Load)		 C 1300 - 1650 1600 1300 1300 1500 - 1600
Thermal Shock (Quenching) C 400 250 - 350 165 - 245 660
Thermal Conductivity W/(m K) 110 - 200 70 - 150 85 - 180 90 -120 250 - 300
Specific Heat  J/(K kg) 1100 - 2805 590 - 670 670 - 710 660
Coefficient of Thermal Expansion 1/C (x10e-6) 4.0 - 4.6 3.9 - 4.5 4.5 4.5 2.2 - 4.5
Color Black Black Black Black Black
Moh Hardness
Vickers Hardness kg/mm^2 1425 - 2545 2565 - 2800 1425 - 2900 2540 - 2800
Knoop Hardness kg/mm^2 2500 2550 - 3100 2900 2500  - 2750
Density g/cm^3 2.5 - 3.1 3.1 3.2 - 3.3 3.21 3.1 - 3.2
Porosity % of nominal <1 4 <1 0 0
Compressive Strength Mpa 2000 - 3900 3500 - 4600 1000 - 4600
Tensile Strength Mpa 307 - 310 210 335 - 400 220
Flexural Strength MPa 180 - 460 379 - 600 300 - 800 600 - 700 415 - 468
Fracture Toughness MPa m^1/2 3.0 - 5.0 2.6 - 4.8 2.5 - 5.3 5.0 - 6.0 2.7 - 3.5
Young's Modulus GPa 270- 413 390 - 490 200 - 860 450 310 - 466
Poisson's ratio 0.14 - 0.19 0.11 - 0.17 0.14 - 0.16 0.18 - 0.21
Dielectric Strength kv/cm 40
Dielectric Constant (@1MHz)
Dielectric Loss Tangent
Resistivity ohm cm 10 - 10^5 10^2 - 10^6 10^3 - 10^7  10^5 .01 - 10^6
The information provided in this table is for room temperature only, and is a compilation of publicly available data.  This information is provided for comparison purposes only, and is not intended to be warrantable.   Further, CiDRA® Precision Services, LLC disclaims any and all liability from errors, inaccuracies, or omissions.

 

Please contact us if you would like to discuss your Silicon Carbide dicing, drilling, milling, grinding, polishing or any other machining applications.