Morgan Advanced Ceramics Sintox ™ FA Metallizing Mac-A950R-3 Aluminum Oxide Ceramic

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Morgan Advanced Ceramics Sintox ™ FA Metallizing Mac-A950R-3 Aluminum Oxide Ceramic
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	Alumina ceramic with 95.0% Al2O3 content that is specially formulated for accurate grain size. This is feature particularly valuable when a ceramic microstructure is needed to provide a good keying surface for high integrity molybdenum metallizing. Prime Features: Dense, non-porous and vacuum tight Readily accepts molybdenum metallizing for high temperature brazing of assemblies High volume resistivity Good high temperature characteristics Low coefficient of expansion Resists chemical attack Fire resistant and non-outgassing Typical Applications: High vacuum equipment and scientific instruments where ceramic components need to be brazed to form high strength connections and complex assemblies Insulators for probes and sensors Transducer components Insulators for vacuum pumps Gun assemblies and connectors for X-ray tubes and electron microscopes Production Capabilities: Pressed and machined components Metallizing of components High temperature brazing of assemblies Information provided by Morgan Advanced Materials
Key Words:	Mac-A950R-3
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Physical Properties	Original Value	Comments

Density	3.75 g/cc	fired
Open Porosity	0.00 %	fully dense, % nominal, apparent
Grain Size	>= 4.0 µm	controlled limits; 8
	5.0 µm

Mechanical Properties	Original Value	Comments
Hardness, Rockwell HR45N	78
Hardness, Vickers	12.5 @Load 0.500 kg	[GPa]
Modulus of Elasticity	325 GPa
Flexural Strength	320 MPa	3-point; ASTM C1161
Compressive Strength	2000 MPa

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+8 ohm-cm @Temperature 600 °C
	>= 1.00e+14 ohm-cm @Temperature 20.0 °C
Dielectric Constant	9.4 @Frequency 9.40e+9 Hz
	9.5 @Frequency 1e+6 Hz

Thermal Properties	Original Value	Comments
CTE, linear	7.50 µm/m-°C @Temperature 0.000 - 800 °C
Thermal Conductivity	21.0 W/m-K @Temperature 20.0 °C

Component Elements Properties	Original Value	Comments
Al2O3	95 %

Descriptive Properties
Color	pink
Thermal Downshock	170 sC

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CMORF5028 / 200266

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