CeramTec SL 200 BG Silicon Nitride, Si3N4-Y2O3

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CeramTec SL 200 BG Silicon Nitride, Si3N4-Y2O3
Categories:	Ceramic; Nitride
Material Notes:	SL 200 BG is a silicon nitride ceramic used to make welding rollers, pins, and components, gas nozzles, and forming tools. Silicon nitrides are ideal for components working under mechanical loads and engine parts, even and especially at elevated temperatures. Their property profile includes: extremely high strength, good crack resistance, outstanding wear resistance, good heat conductivity, very low heat expansion, and good resistance to sudden changes in temperature. Due to these properties and its low weight, silicon nitride is a material for the highest demands.
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Physical Properties	Metric	English	Comments

Density	3.21 g/cc	0.116 lb/in³	DIN EN 623-2
Water Absorption	0.00 %	0.00 %	Open Porosity; DIN EN 623-2
Permeability	0.00	0.00	%, Gas
Weibull Modulus	16	16	DINV ENV 843-5

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	1650	1650	HV1; DINV ENV 843-4
Tensile Modulus	310 GPa	45000 ksi	Young's; DINV ENV 843-2
Flexural Strength	850 MPa	123000 psi	DIN EN 843-1
Compressive Strength	3000 MPa	435000 psi	DIN 51067T1
Poissons Ratio	0.26	0.26	DINV ENV 843-2
Fracture Toughness	7.00 MPa-m½	6.37 ksi-in½	K_IC (SEVNB); DIN CEN/TS 14425-1
Shear Modulus	123 GPa	17800 ksi	Calculated

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm	IEC 672-1
Dielectric Constant	8.0 @Frequency 1e+6 Hz	8.0 @Frequency 1e+6 Hz	IEC 672-1
Dielectric Strength	19.0 kV/mm	483 kV/in	IEC 672-1
Dielectric Loss Index	0.0040 @Frequency 1e+9 Hz	0.0040 @Frequency 1e+9 Hz	IEC 672-1

Thermal Properties	Metric	English	Comments
CTE, linear	3.20 µm/m-°C @Temperature 20.0 - 400 °C	1.78 µin/in-°F @Temperature 68.0 - 752 °F	DIN EN 821-1
	4.30 µm/m-°C @Temperature 20.0 - 1000 °C	2.39 µin/in-°F @Temperature 68.0 - 1830 °F	DIN EN 821-1
Specific Heat Capacity	0.700 J/g-°C	0.167 BTU/lb-°F	DINV ENV 821-3
Thermal Conductivity	21.0 W/m-K	146 BTU-in/hr-ft²-°F	DIN EN 821-2
Maximum Service Temperature, Air	1300 °C	2370 °F
Maximum Service Temperature, Inert	1600 °C	2910 °F

Descriptive Properties
Ra = Arithmetic Mean Roughness Value (µm)	<0.1
Thermal Shock Resistance R1 (K)	569		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 view all the property values for this datasheet as they were originally entered into MatWeb.

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