LOT OF TWO (2) SQUARE 99.5% HIGH PURITY ALUMINA CERAMIC
SUBSTRATES 2"x 2"x 0.025" No.: 103
No.: 103
Length: Approximately 2.00” -0.010/+0.005" (50.8 mm)
Width: Approximately 2.00”-0.010/+0.005" (50.8 mm)
Thickness: Approximately 0.025” -0.000/+0.005" (0.64 mm)
You are buying one Lot of Two (2) Thin Square High Purity Alumina Ceramic Substrate. They are in excellent new condition. They measure 2" x 2" x 0.025" thick. They are made from 99.5% high purity Aluminum Oxide (Al2O3) which of course is Alumina. Generally, the balance of composition for this purity Alumina material is of Silicon Dioxide (SiO2) which is Silica. This material has very high hardness, very high stiffness, very good corrosion resistance to chemicals at high temperature, and very high refractoriness or use temperature. They may be used for a variety of electrical, mechanical, and thermal applications. They are great for firing sample in a high temperature kiln. The may be slumped at 3100 F (1700 C). They are sufficiently thin to use as diffusers of light. They are great for both electronic substrates or sculptural works of art. They may also be used for jewelry or for applications requiring high wear or abrasion resistance. Your imagination is the only limiting factor in the spectrum of possible applications for this component. Be sure to view all photos as they are an integral component of the item description.
The specifications for these components are as follows:
Length: Approximately 2.00” -0.010/+0.005" (50.8 mm)
Width: Approximately 2.00”-0.010/+0.005" (50.8 mm)
Thickness: Approximately 0.025” -0.000/+0.005" (0.64 mm)
Dielectric constant (relative permittivity): 99.5% Alumina typically around 9.8
Dielectric loss (dissipation factor, tan δ): 99.5% Alumina is 0.0001 to 0.0002 at 1 MHz
Please Note: There are no differences in any or all of the dimensions. These are precision technical ceramic components. There is no significant warp or camber in this item. They are relatively flat.
Specific Gravity or Density: 3.9 g/cm3
Water Absorption or Porosity: 0%
Fusion Temperature or Melting Temperature: 2000 °C or 3550 °F
Maximum Working Temperature: 1600 °C or 2900 °F
Thermal Conductivity: 25 W/m* K
Specific Heat: 0.9 J/g*K
Expansion Coefficient or CTE: 7.5 x 10 E-6 inches/°C
Electrical Resistivity at 20 C: 10 E14 Ohm*cm
Electrical resistance at 600 C: 10 E8 Ohm*cm
Modulus of Elasticity: 44 x 10 E6 p.s.i. or 350 GPa.
These components were not specifically manufactured for an individual application; therefore be sure to check the dimensional descriptions carefully for your application. Future returns or requests for refunds, because of some "fit" issue or the like will not be honored. Please check the other Alumina component variants that are available in my listings for the model or models that best fits your requirement. Your imagination is the only limiting factor in the spectrum of possible applications for these components and materials.
If you require additional technical information, design, or application engineering consultation, feel free to contact us. As a materials scientist with four decades of experience in high temperature processing, ceramics, dentistry, and jewelry manufacture it will be possible to provide you with creative and imaginative approaches to your requirements.
Feel free to ask any questions you may have regarding this item early. Use PayPal only. Combined shipping discount is provided for multiple item purchases. For best results, please be sure to shop using cart, then complete the paying transaction when you are satisfied that all the items you need are in the cart. Items purchased separately will be shipped separately as a unique transaction. Please complete payment transactions within 3 days. Items are generally shipped via USPS first class mail with delivery confirmation. Ask about shipping costs to your country.
Feedback is provided for all buyers. We will appreciate yours as well. We strive to maintain excellent customer service and are able to solve virtually any issues you may have. Every effort to provide the most accurate information about this item and every appropriate precaution in packaging this item is made, to assure that your highest expectations and satisfaction are met, and are exercised to meet this requirement for excellence. In winning this auction or purchasing this item you are agreeing that you will first provide the seller every opportunity to provide redress or resolution to any issues you may have concerning this item, prior to leaving any negative feedback about the seller or the item.
No.: 103