Sintered Silicon Carbide

Sintered SiC


That’s our tradename for our Sintered Alpha Silicon Carbide. 

CALSIC S is a single phase material containing greater than 99% silicon carbide. Sintered SiC is a self-bonded material containing a sintering aid (typically Boron) of less than 1% by weight. CALSIC S is a fine-grained material with a typical grain size of < 5 microns.

Outstanding corrosion resistance

The lack of binder or secondary phase makes our sintered silicon carbide nearly universally corrosion resistant.

Excellent wear & abrasion resistance

Due to the high hardness of CALSIC S (2800 Knoop), it is extremely resistant to wear and abrasion.

High temperature strength & creep resistance

CALSIC S retains nearly full strength to temperatures approaching 1750°C. Due to its high modulus, our sintered silicon carbide does not creep under load.

Superior thermal shock

CALSIC S offers very good thermal shock resistance thanks to its high thermal conductivity (125W/mK).

Sintered Silicon Carbide Properties

Sintered silicon carbide (SiC) boasts hardness rivaled only by diamond. Our CALSIC S is extremely resistant to wear, abrasion, thermal and shock – making it great for a variety of applications and products. Learn more about sintered silicon carbide properties below.

All properties are at room temperature (20°C) unless otherwise stated.

Composition Grain Size (μm) Density (g/cc) Hardness (Knoop) (GPa) Modulus of Rupture (MPa) Tensile Strength (MPa) Compressive Strength (MPa) Elastic Modulus (GPa) Coefficient of Thermal Expansion (1 x 10-6 in/in °C) Thermal Conductivity (W/mK) Poisson’s Ratio
SiC 44661 3.15 2800 380 250 3900 410 4 125 0.16