COI Ceramics Nextel™ A-N720 Oxide Ceramic Matrix Composite, Alumina

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COI Ceramics Nextel™ A-N720 Oxide Ceramic Matrix Composite, Alumina
Categories:	Ceramic; Ceramic Matrix Composite; Oxide; Aluminum Oxide
Material Notes:	Description: Oxide ceramic matrix composites products are based upon sol-gel derived matrices and 3M Corporation's Nextel™ fiber products. These materials can be used up to 1200ºC (2200ºF) in air environments and are primarily used in both Aerospace and Gas Turbine applications. Ceramic Matrix System: Water Based Sol-Gel Processing, Versatile Matrix Chemistry Typical Applications for Oxide CMCs: Rotocraft Exhaust Systems, Advanced Thermal, Advanced Combustor Highest Temperature & Creep Performance Information from COI Ceramics, Inc.
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Physical Properties	Original Value	Comments

Density	2.73 g/cc
Porosity	25 %

Mechanical Properties	Original Value	Comments
Tensile Strength	169 MPa
	141 MPa @Treatment Temp. 1200 °C
	148 MPa @Treatment Temp. 1090 °C
	159 MPa @Treatment Temp. 982 °C
Tensile Stress at Strain	8.70 ksi @Strain 0.1 %, Temperature 1200 °C
	10.2 ksi @Strain 0.1 %, Temperature 25.0 °C
	17.4 ksi @Strain 0.2 %, Temperature 1200 °C
	18.1 ksi @Strain 0.2 %, Temperature 25.0 °C
	23.2 ksi @Strain 0.3 %, Temperature 25.0 °C
	23.2 ksi @Strain 0.3 %, Temperature 1200 °C
Creep Strength	100 MPa @Temperature 1200 °C, Time >=360000 sec
	110 MPa @Temperature 1200 °C, Time 177000 sec
	110 MPa @Temperature 1200 °C, Time 89890 sec
	125 MPa @Temperature 1200 °C, Time 27700 sec
	125 MPa @Temperature 1200 °C, Time 27100 sec
	150 MPa @Temperature 1200 °C, Time 1010 sec
	165 MPa @Temperature 1200 °C, Time 324 sec
Tensile Modulus	70.0 GPa
Fatigue Strength	150 MPa @# of Cycles >=100000 , Temperature 1200 °C
	165 MPa @# of Cycles >=100000 , Temperature 1200 °C
	170 MPa @# of Cycles >=100000 , Temperature 1200 °C
	175 MPa @# of Cycles 97798 , Temperature 1200 °C
	175 MPa @# of Cycles 27742 , Temperature 1200 °C
Shear Strength	12.5 MPa	Short Beam

Thermal Properties	Original Value	Comments
CTE, linear	6.00 µm/m-°C
Maximum Service Temperature, Air	1200 °C

Descriptive Properties
Nominal Fiber Volume (%)	45

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CCOIC003 / 122043

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