Ceradyne Ceralloy® 147-01B Silicon Nitride

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Ceradyne Ceralloy® 147-01B Silicon Nitride (discontinued **)
Categories:	Ceramic; Nitride
Material Notes:	Ceralloy® 147 Reaction Bonded Silicon Nitride (RBSN) is a high purity grade of silicon nitride having a density of approximately 70-80% of theoretical. RBSN has excellent thermal shock resistance and outstanding compatibility with non-ferrous molten metals. This lower cost alternative to the fully dense silicon nitride grades can be manufactured to close tolerance without the need for expensive diamond grinding. Applications: Industrial applications, electrical insulators, sputtering targets. Information provided by Ceradyne Company Ceradyne was acquired by 3M in 2012. The product line has been extensively renamed and reconfigured.
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Physical Properties	Metric	English	Comments

Density	2.30 g/cc	0.0831 lb/in³
Weibull Modulus	10	10

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	800	800	0.3 kg/mm²
Modulus of Elasticity	175 GPa	25400 ksi
Flexural Strength	190 MPa	27600 psi	at Room Temperature
Poissons Ratio	0.21	0.21
Fracture Toughness	2.50 MPa-m½	2.28 ksi-in½
Abrasion	360	360	Abrasive Wear Resistance Parameter

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	3.20 µm/m-°C @Temperature 20.0 - 1000 °C	1.78 µin/in-°F @Temperature 68.0 - 1830 °F
Thermal Conductivity	14.0 W/m-K	97.2 BTU-in/hr-ft²-°F

Descriptive Properties
Purity, %	72
Thermal Shock Parameter	330°C

**
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CCERDN00 / 683

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