--- title: Precision Substrate Polishing Services description: Centerline polishes virtually all ferrous or non-ferrous materials using mechanical processes and CMP depending on customer requirements. --- [![Centerline Technologies](https://www.centerlinetech-usa.com/hs-fs/file-1050716576-png/images/Centerline-logo.png?width=429&height=71&name=Centerline-logo.png "Centerline Technologies")](https://www.centerlinetech-usa.com/) Search 978-568-1330 [![centerline on linkedin](https://www.centerlinetech-usa.com/hs-fs/file-1048401543-png/images/linkedin_64.png?width=30&name=linkedin_64.png "centerline on linkedin")](http://www.linkedin.com/company/centerline-technologies)[![centerline on google plus](https://www.centerlinetech-usa.com/hs-fs/file-1047278729-png/images/googplus_64.png?width=30&name=googplus_64.png "centerline on google plus")](https://plus.google.com/109195098502174891716/about) ![Precision substrate polishing](https://www.centerlinetech-usa.com/hs-fs/file-1219668021-png/Centerline_images/Capabilities_larger_pictures/Precision-substrate-polishing.png "Precision substrate polishing") | Centerline uses both mechanical and chemical mechanical process (CMP) to meet the polishing needs of our customers. | | --- | # Precision Polishing Capabilities Centerline Technologies is dedicated to providing the polishing of advanced materials to surface finishes and supplier quality levels that consistently meet or exceed our customer’s expectations. Advanced level polishing requires that appropriate abrasive and pre-lapping conditions be used to significantly reduce sub-surface damage. Centerline uses both mechanical and CMP (chemical mechanical process) depending on the customers requirements. We are constantly looking for ways to enhance the processes that we have already established, while maintaining careful process controls and qualifications. Industry standard materials polished are 99.6% Alumina, 96% Alumina, AlN, BeO, Sapphire, Fused Silica. Centerline polishes virtually any ferrous or non ferrous material. Centerline Technologies’ polishing process controls the surface finish and, combined with our lapping process, assures thickness identity and parallelism, as well as flatness of substrates. Our lapping and polishing processes are custom designed for each type of material and the physical dimensions required. [Request a Quote](https://www.centerlinetech-usa.com/quote) [Technical Support](https://www.centerlinetech-usa.com/support) - [![pdf](https://www.centerlinetech-usa.com/hs-fs/file-13703083-png/images/pdf.png)Download Page as PDF](https://www.centerlinetech-usa.com/hs-fs/file-13703333-pdf/docs/Polishing.pdf) - [Why Polish substrates?](https://centerlinetech-usa.hs-sites.com/why-polish-substrates-centerline-technologies)- Understand the benefits of polishing substrates - [Die Level Lapping and Polishing](https://centerlinetech-usa.hs-sites.com/die-level-lapping) - for parts as small as 7mm     | **Material** | **Surface Finish** | **Thickness Tolerance** | **Applications** | | --- | --- | --- | --- | | [As-Fired 99.6%](https://www.centerlinetech-usa.com/alumina) | < 4 u-in | +/- 10% or +/- 5% | Use for low to medium power DC & RF circuits | | [Polished 99.6% Alumina](https://www.centerlinetech-usa.com/alumina) | < 1 u-in | +/- .0005" | Use for low to medium power RF, Microwave, and Optical interconnects | | [Polished 99.5% Beryllium Oxide](https://www.centerlinetech-usa.com/beo) | < 3 u-in | +/- .0005" | Use for high power DC/RF/Microwave & Optical applications | | [Polished Aluminum Nitride](https://www.centerlinetech-usa.com/aluminum-nitride-aln) | < 2 u-in | +/- .0005" | Use for higher power DC/RF/Microwave & Optical applications | | [Polished Fused Silica](https://www.centerlinetech-usa.com/fused-silica-quartz) | < 1 u-in | +/- .0005" | Use for Optical or High Frequency interconnects requiring extremely low loss transmission performance | | Polished Titanates | < 3 u-in | +/- .0005" | RF & Microwave devices requiring high Q performance | ### [Products](https://www.centerlinetech-usa.com/products) [Alumina](https://www.centerlinetech-usa.com/alumina) [BeO ](https://www.centerlinetech-usa.com/beo) [Aluminum Nitride ](https://www.centerlinetech-usa.com/aluminum-nitride-aln) [Fused Silica/Quartz ](https://www.centerlinetech-usa.com/fused-silica-quartz) [Sapphire ](https://www.centerlinetech-usa.com/sapphire)[Shop Our Store](https://shop.centerlinetech-usa.com/) ### [Capabilities](https://www.centerlinetech-usa.com/capabilities) [Lapping](https://www.centerlinetech-usa.com/lapping) [Polishing](https://www.centerlinetech-usa.com/polishing) [Filled Via Planarity](https://www.centerlinetech-usa.com/filled-via) [Diamond Sawing](https://www.centerlinetech-usa.com/diamond-sawing) [Laser Machining](https://www.centerlinetech-usa.com/laser-machining) [Specialty Processes ](https://www.centerlinetech-usa.com/specialty-processes)[Quality Control](https://www.centerlinetech-usa.com/quality-control) [Small Quantities](https://www.centerlinetech-usa.com/small-batches-and-prototyping) ### [Technical Data](https://www.centerlinetech-usa.com/technical-data) [Conversion Tool](https://www.centerlinetech-usa.com/conversion) ### [About Us](https://www.centerlinetech-usa.com/about) [Why Polish Substrates?](https://www.centerlinetech-usa.com/why-polish-substrates-centerline-technologies) [Customers](https://www.centerlinetech-usa.com/customers) [News ](https://www.centerlinetech-usa.com/news)[Q](https://www.centerlinetech-usa.com/news)[uality Control ](https://www.centerlinetech-usa.com/quality-control)[C](https://www.centerlinetech-usa.com/quality-control)[areers](https://www.centerlinetech-usa.com/careers) ### [Contact](https://www.centerlinetech-usa.com/contact) **Centerline** **Technologies, LLC** 577 Main Street Suite 270 Hudson, MA 01749 Call: 978-568-1330 Fax: 978-568-1334 [![spie](https://www.centerlinetech-usa.com/hs-fs/file-13703097-gif/images/spie_logo.gif?width=188&height=45&name=spie_logo.gif "spie")](http://spie.org) [![ASM](https://www.centerlinetech-usa.com/hs-fs/file-13702755-png/images/asm_em_logo.png "ASM")](http://asminternational.org) [![The American Ceramic Society](https://www.centerlinetech-usa.com/hs-fs/file-1058396430-png/images/american-ceramic-soc.png "The American Ceramic Society")](http://www.ceramics.org/) [![imaps.com](https://www.centerlinetech-usa.com/hs-fs/file-1058396425-png/images/imaps.png?width=55&name=imaps.png "imaps.com")](http://www.imaps.org/) ![We-accept-cards.jpg](https://www.centerlinetech-usa.com/hubfs/Centerline_images/Blog_Photos/We-accept-cards.jpg "We-accept-cards.jpg") End-to-End Encryption, Powered by Worldpay