Ceradyne Ceralloy® 147-5 Silicon Nitride

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Ceradyne Ceralloy® 147-5 Silicon Nitride (discontinued **)
Categories:	Ceramic; Nitride
Material Notes:	Ceralloy® 147 Hot Pressed Silicon Nitride (HPSN) can be formulated into a variety of compositions having minimal densification aids. These HPSN compositions offer the highest strength of Ceradyne's silicon nitrides. Finished components are machined at Ceradynes precision diamond grinding facility. Applications: wear components. 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	3.30 g/cc	0.119 lb/in³
Weibull Modulus	15 - 20	15 - 20

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	1800	1800	0.3 kg/mm²
Modulus of Elasticity	320 GPa	46400 ksi
Flexural Strength	930 MPa @Temperature 23.0 °C	135000 psi @Temperature 73.4 °F
Poissons Ratio	0.28	0.28
Fracture Toughness	6.00 MPa-m½	5.46 ksi-in½
Shear Modulus	125 GPa	18100 ksi	calculated
Abrasion	1100	1100	Abrasive Wear Resistance Parameter

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm
Dielectric Constant	8.14	8.14

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	35.0 W/m-K	243 BTU-in/hr-ft²-°F

Descriptive Properties
Purity, %	>98.5
Thermal Shock Parameter	654°C

**
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CCERDN03 / 686

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