Best in Class Grades for. Ceramic Processing. Easy to Grind Easy to Sinter

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1 Best in Class Grades for Ceramic Processing Easy to Grind Easy to Sinter

2 Huber Martinswerk s specialty unground, ground and superground highly reactive Martoxid aluminum oxides are used globally for a variety of technical ceramic applications. Huber Martinswerk offers a range of tailor-made Martoxid superground aluminum oxides to meet and exceed the most demanding requirements of ceramic product producers such as chemical purity and low alkali content (Na2O content is 0.1%), crystal properties, particle size and its distribution, rheological behavior and ceramic reactivity. Each product has specific characteristics for specific fields of application. Typical application fields include high mechanical strength, extreme hardness, excellent resistance to wear, temperature and corrosion, thermal conductivity and good electrical insulation. Huber Martinswerk produces a wide range of Martoxid specialty oxides with constant quality characteristics. Stringent quality control and careful manufacturing procedures ensure a consistent process and guaranteed reproducible characteristics for each product. Details concerning the products, their applications and different properties are shown in the information and data that follows. 2

3 alumina for manufacturing high purity super reactive alumina compounds 99.5% Al 2 O 3 alumina for manufacturing of highly reactive ceramic compounds > 98% Al 2 O 3 basic material for specific processing on the customers milling equipment basic material dedicated to the customers upgrading equipment engineering ceramics, providing highest sintered densities engineering and performance ceramics Ideal feedstock for wear resistant engineering ceramics Ideal for the manufacturing of high quality spark plugs, insulators and automotive converters Fine ground basic material for further treatment on the customers milling equipment; qualified for extrusion Deagglomerated and pre-refined powder for fine preparation of the feed materials Technical ceramics > 92% Al 2 O 3, such as thread guides, seal discs and wear resistant electronic parts To produce high quality spark plugs, insulators and automotive converters Fine ground alumina with optimized shrinkage alumina with narrow particle size distribution; qualified for injection molding Roundish shaped, superground alumina with narrow particle size distribution and high sintering potential alumina with controlled wide grain size distribution and high green density; for low shrinkage applications alumina with an extremely high green density; for isostatic and uniaxial pressing, slip, tape casting and injection molding Thermally reactive Al 2 O 3 (fired density > 3.88 g/cm 3 at 1600 C); for mechanical, electrical, chemical and thermal loads Electrical and technical ceramics > 92% Al 2 O 3 such as housings, vacuum tubes, substrates and seal discs For the production of ceramics with an alumina-content up to 99.7% such as electronic and mechanical engineering parts film substrates, mechanical engineering and performance ceramics For formulations 99.5% Al 2 O 3, dedicated to advanced ceramics mostly used for electrical and mechanical engineering components Ceramics of high electrical and mechanical strength up to 99.7% Al 2 O 3 like substrates, pump parts, ball valves, tubes, thread and wire guides and laser reflectors Technical ceramics with an alumina content of 99.7% such as pump parts, bearings, substrates and tubes 3

4 Martoxid Calcined Aluminas for Technical Ceramics The Martoxid alumina oxide grades are the powders of choice for technical ceramics applications as they meet and exceed the highest product quality standards and customer requirements. On page three to the left, you ll see a comprehensive listing of the Martoxid grades Huber Martinswerk offers along with individual product characteristics and ceramics applications. Martoxid MRS and Martoxid MRS-1 are alumina powders specifically designed to meet our customers requirements in high performance ceramics. They are well-suited for use in sophisticated electronic applications and mechanically stressed and engineering components. To get a better understanding of our comprehensive line-up of Martoxid product offerings for technical ceramics, below is a snapshot of the typical chemical and physical properties and unique product characteristics of each product. You will notice the products are divided into groupings to showcase our unground, ground and superground grades. For a sample of any of the products listed below, visit hubermaterials.com/ceramics or us at hubermaterials@huber.com. Martoxid Grade MPS MRS MZS MDS MZS-3 MDS-6 MR-23 MZS-1 MRS-1 MR-32 MR-52 MR-70 State of Milling Ground Ground Al 2 O 3 Content [%] Na 2 O Content [%] SiO 2 Content [%] Fe 2 O 3 Content [%] CaO Content [%] MgO Content [%] α-content [%] ~ 0.04 ~ 0.1 ~ ~ 0.09 Specific Surface Area (BET) [m²/g] Primary Crystal Size [µm].5 ~.05.8 ~ 0.6 ~ ~ 2.2 ~ 3 ~ 2 ~ ~ 9 ~ 0.6 Particle Size Distribution d10 [µm] ~ 0.8 ~ 0.9 ~ 0.65 ~ 0.2 d50 [µm] ~ ~ 0.7 d90 [µm] 45 µm [%] ~12 3 ~ 8 ~ ~ 0.01 ~ 2.8 ~ ~ 0.3 ~ 2.3 ~ 0.3 Bulk Density [kg/m³] ~ 900 ~ 850 ~ 750 ~ 550 ~ 600 ~ 600 ~ Pressed Density at 50 MPa [g/cm³] ~ 2.25 (100 MPa) ~ (100 MPa) Sintered Density at 1600 C* [g/cm³] ~ 3.3 ~ 3.4 ~ 3.7 ~ 3.9 *Retention Time: 2 Hours at Tmax Under the Scanning Electron Microscope (SEM), one can truly visualize the outstanding physical appearance of Martoxid MR-70 and Martoxid MDS. Look closely at the excellent technical pattern and symmetry of both products. MDS is ideal for automotive and insulation applications while MR-70 is thermally reactive and is ideal for a number of industrial ceramics applications. We encourage you to contact us at hubermaterials@huber.com to obtain samples of these high performing grades. Martoxid MR-70 Martoxid MDS 4 5

5 6 Median Particle Size [µm] MR-23 MZS-1 MR-32 MRS-1 MR-52 MR Specific Surface Area [m 2 /g] The high performing superground Martoxid grades meet the requirements of many high-end ceramic applications. Take a look above where we plot our Martoxid superground products by median particle size (µm) and specific surface area (m 2 /g). You ll see we offer a range of grades for your consideration. Since we offer a number of products with varying properties, we will work closely with you to completely understand your specific ceramics application to identify and customize the product solution perfect for your situation. Huber Martinswerk has more than half a century of supplying calcined aluminas for the most demanding technical ceramics applications. In addition to our innovative Martoxid grades that we ve presented, we provide superior technical service and expertise along with a deep dedication toward providing fast, personalized customer service and support. We look forward to working with you. Contact us today for more information and samples of our array of Martoxid calcined alumina products for your technical ceramics applications. Europe / Middle East / Africa Martinswerk GmbH Kölner Straße 110 D Bergheim Fax: North America Huber Engineered Materials 3100 Cumberland Blvd. Suite 600 Atlanta, Georgia Asia Pacific Huber Fire Retardant Additives (Qingdao) Co. Ltd. 8th Floor; No. 2 Building, No. 7 Wuyishan Road Huangdao District Qingdao, Shandong China THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Refer to the Huber Martinswerk Standard Conditions of Sale for the only express warranties applicable to the Huber Martinswerk products. Products incorporating Huber Martinswerk products are not warranted by Huber Martinswerk. In no event is Huber Martinswerk liable for consequential damages. Martoxid is used, applied for, or registered as a trademark of Huber Martinswerk in various countries around the world J.M. Huber Corporation and Martinswerk GmbH Martoxid/CalcinedAlumina/TechnicalCeramics/RevI/May2018