MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 180,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
  

Rulon Bearings

CoorsTek PlasmaPure™ AD-998 Alumina (nom. 99.8% Al2O3)
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: Thermal Shock Delta Tc = 200°C - Thermal shock tests are performed by quenching samples in water from different elevated temperatures. Delta Tc is the change in temperature which results in a sharp decrease in the flexural strength of the sample.

Data Provided by the manufacturer, CoorsTek, Inc.

Key Words: Al2O3
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 3.93 g/cc0.142 lb/in³ASTM C20
Water Absorption 0.00 %0.00 %ASTM 373
Particle Size 6.0 µm6.0 µmThin Section Crystal Size
 
Mechanical PropertiesMetricEnglishComments
Knoop Microhardness 14.114.11000 g
Hardness, Rockwell 45 N 8383
Tensile Strength, Ultimate 275 MPa39900 psiACMA Test #4
Modulus of Elasticity 370 GPa53700 ksiASTM C848
Flexural Strength 400 MPa58000 psiASTM F417
Compressive Strength 2680 MPa389000 psiASTM C773
Poissons Ratio 0.220.22ASTM C848
Fracture Toughness 4.00 - 5.00 MPa-m½3.64 - 4.55 ksi-in½Notched Beam
Shear Modulus 152 GPa22000 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cmASTM D1829
 3.00e+6 ohm-cm
@Temperature 1000 °C
3.00e+6 ohm-cm
@Temperature 1830 °F
ASTM D1829
 1.00e+11 ohm-cm
@Temperature 500 °C
1.00e+11 ohm-cm
@Temperature 932 °F
ASTM D1829
Dielectric Constant 9.8
@Frequency 1e+6 Hz
9.8
@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 8.70 kV/mm221 kV/inAC; ASTM D116
Dissipation Factor <= 0.00010
@Frequency 1e+6 Hz
<= 0.00010
@Frequency 1e+6 Hz
ASTM D2520
 
Thermal PropertiesMetricEnglishComments
CTE, linear 8.20 µm/m-°C
@Temperature 25.0 - 1000 °C
4.56 µin/in-°F
@Temperature 77.0 - 1830 °F
ASTM C372
Specific Heat Capacity 0.880 J/g-°C0.210 BTU/lb-°FASTM E1269
Thermal Conductivity 30.0 W/m-K208 BTU-in/hr-ft²-°FASTM C408
Maximum Service Temperature, Air 1750 °C3180 °FNo Load
 
Component Elements PropertiesMetricEnglishComments
Al2O3 99.8 %99.8 %
 
Descriptive Properties
ColorIvory

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.

Users viewing this material also viewed the following:
Aluminum Nitride, AlN
Alumina, alpha Al2O3, 99.5%
CoorsTek UltraSiC™ SC-30 Direct Sintered Silicon Carbide
CoorsTek PlasmaPure-UC™ 99.9% Alumina
CoorsTek Porcelain

CA7Ga / 383

Free Trade Publications, Click Here!
Free Trade Publications, Click Here!

Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at info@matweb.com. We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2025 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.