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Macor®
Corning
Machinable
Glass Ceramic
Technical Products, Inc.Technical Products, Inc
P.O. Box 189, Hubertus, WI 53033
Phone (262) 335-3635 * Fax (262) 335-3606 * Toll Free (800) 869-2008
E-mail: tpi@technicalproductsinc.com



Complete Ceramic Services
Lowest Competitive Pricing / Quick Delivery / Top Quality / Expert Design and Technical Assistance
Distributor * Fabricator * Prototype & Production

Alumina Oxide Material Specs.:

Physical Properties
Units
Test
85%
Alumina
94%
Alumina
96%
Alumina
99.5%
Alumina
99.9%
Alumina
Chemical Formula
-
-
Al2O3
Al2O3
Al2O3
Al2O3
Al2O3
Density
g/cm3
ASTM C20
3.42
3.70
3.72
3.7-3.97
3.93
Color
-
-
white
white
ivory/white
-
Crystal Structure
-
-
-
-
hexagonal
-
Water Absorption
%@ R.T.
ASTM C373
0.0
0.0
0.0
0.0
0.0
Hardness
Moh's
-
9
9
9
-
Hardness
knoop(kg/mm1)
Knoop 100g
2000
2000
2000
Mechanical Properties
Units
Test
85%
Alumina
94%
Alumina
96%
Alumina
99.5%
Alumina
99.9%
Alumina
Compressive Strength
MPa @ R.T.
ASTM C773
1930
2103
2068
2070-2620
510 kpsi
Tensile Strength
MPa @ R.T.
ACMA Test #4
155
193
221
260-300
44 kpsi
Modulus of Elasticity
(Young's Mod.)
ºC
ASTM C848
41-46 x 106 psi
394
55 x 106 psi
Flexural Strength (MOR)
MPa @ R.T.
ASTM F417
296
352
358
310-379
50-60
Poisson's Ratio
-
ASTM C818
.22
0.21
0.21
0.27
0.19
Fracture Toughness
Mpa x m1/2
Notched Beam Test
3-4
4-5
4-5
4.5
4-5
Thermal Properties
Units
Test
85%
Alumina
94%
Alumina
96%
Alumina
99.5%
Alumina
99.9%
Alumina
Max. Use Temperature
(*denotes insert atm.)
ºC
No load cond.
1400
1700
1700
1750
1900
Thermal Shock Resistance
deltaT (ºC)
Quenching
300
300
250
200
200
Thermal Conductivity
W/mk @ R.T.
ASTM C408
16
18.0-28.0
24.7
35
341
Coefficient of Linear
Thermal Expansion
µm/m-ºC
(-25¡C through ²1000ºC)
ASTM C372
7.2
8.2
8.2
8.4
7.6 x 10-6/ºC
Specific Heat
cal/g-ºC @ R.T.
ASTM C351
0.21
0.21
0.20
Electrical Properties
Units
Test
85%
Alumina
94%
Alumina
96%
Alumina
99.5%
Alumina
99.9%
Alumina
Dielectric Constant
1Mhz @ R.T.
ASTM D150
8.2
9.3
9.0
9.6
9.8
Dielectric Strength
kV/mm
ASTM D116
9.4
(240 acV/mil)
8.3
8.3
(210 acV/mil)
15.0
230 acV/mill
Electrical Resistivity
Wcm @ R.T.
ASTM D182
-
1014
-
The information supplied is not to be taken as a warranty or representation for which Technical Products, Inc. assumes legal responsibility is offered solely for your consideration, investigation and verification. All risk of use, singly or in combination with other products,whether or not in accordance with the instructions, directions or suggestions is borne by the user.

We Will Provide Defect-Free Products and Services to Our Customers' Requirements, On Time, Everytime
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Technical Products, Inc
P.O. Box 189, Hubertus, WI 53033
Phone (262) 335-3635 * Fax (262) 335-3606
Toll Free: (800) 869-2008
E-mail: tpi@technicalproductsinc.com

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The glory and success of Technical Products, Inc. is due entirely to the benevolence of Our Lord Jesus Christ.
We thank him daily. - Dave & Kate Bresina, Owners
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Last updated: 1/14/2010