CeramTec Rocar® ST Silicon Carbide, SSiC

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CeramTec Rocar® ST Silicon Carbide, SSiC
Categories:	Ceramic; Carbide
Material Notes:	Silicon carbide is extremely hard and displays excellent corrosion and thermal shock resistance. Its outstanding sliding properties and high thermal conductivity make useful in tribological applications. SSiC is resistant to all chemical media. Since no metallic silicon is present in the matrix, it can be used at temperatures up to 1600°C without impaired strength. Rocar® ST has excellent volume-production axial dry-press performance which, in turn, results in process reliability combined with lower production costs.
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Physical Properties	Original Value	Comments

Density	3.11 g/cc	DIN EN 623-2
Water Absorption	0.00 %	Open Porosity; DIN EN 623-2
Porosity	2.0 %	closed (approximate)
Permeability	0.00	%, Gas
Weibull Modulus	>= 8.0	DINV ENV 843-5

Mechanical Properties	Original Value	Comments
Vickers Microhardness	2500	HV1; DINV ENV 843-4
Tensile Modulus	420 GPa	Young's; DINV ENV 843-2
Flexural Strength	400 MPa	DIN EN 843-1
Compressive Strength	2200 MPa	DIN 51067T1
Poissons Ratio	0.16	DINV ENV 843-2
Fracture Toughness	3.80 MPa-m½	K_IC (SEVNB); DIN CEN/TS 14425-1
	4.10 MPa-m½	K_IC; DIN 51109
Shear Modulus	181 GPa	Calculated

Electrical Properties	Original Value	Comments
Volume Resistivity	10 ohm-cm @Temperature 400 °C	IEC 672-1
	5.00e+7 ohm-cm @Temperature 20.0 °C	IEC 672-1

Thermal Properties	Original Value	Comments
CTE, linear	3.60 µm/m-°C @Temperature 20.0 - 200 °C	DIN EN 821-1
	4.00 µm/m-°C @Temperature 20.0 - 400 °C	DIN EN 821-1
	4.40 µm/m-°C @Temperature 20.0 - 600 °C	DIN EN 821-1
	4.60 µm/m-°C @Temperature 20.0 - 1000 °C	DIN EN 821-1
Specific Heat Capacity	0.600 J/g-°C	DINV ENV 821-3
Thermal Conductivity	100 W/m-K	DIN EN 821-2
Maximum Service Temperature, Air	1400 °C
Maximum Service Temperature, Inert	1800 °C

Descriptive Properties
Ra = Arithmetic Mean Roughness Value (µm)	<0.1
Thermal Shock Resistance R1 (K)	222	calculated; R1 = [σ_s (1-µ)] / (α·E)

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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CCERA915 / 107515

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