Try: Atomergic Chemetals Corporation 71 Carolyn Boulevard, Farmingdale, New York 11735 Tel: (631) 694-9000 Fax: (631) 694-9177 E-mail: info@atomergic.com BERYLLIUM For Research and Development 99.9% pure and 99.99% pure Properties: CAS Number [7440-47-7] Atomic Weight 9.0122 Specific Gravity 1.846 Color Gray Form Lump Pieces Melting Point 1290o C Boiling Point 2970o C Typical Analysis: 99.9% pure 99.99% pure Aluminum 30 ppm 2.00 ppm Calcium 25 0.20 Chromium 10 10.00 Copper 10 3.00 Iron 25 20.00 Magnesium 20 0.09 Manganese 30 10.00 Silicon 25 1.00 Titanium 10 0.07 BeO < 600 < 20 Applications: For research in Aerospace and Electronics Usage: P-Type dopant for semiconductor devices X-ray windows and tubes Neutron source Beryllium is a Strategic Commodity which is controlled by the US government for reasons of Nuclear Non-proliferation and Anti-Terrorism. All US export regulations must be strictly adhered to. Beryllium is a potentially hazardous material. Customers should familiarize themselves with the Material Safety Data Sheet for hygienic and exposure risks before using this product. Customers must assume all legal liability for purchase of this product. Atomergic will assume no liability after the product is sold. Copyright Atomergic Chemetals Corp. All rights reserved worldwide. On Fri, 5 Jul 2002 14:20:54 +0200 Stefan Wiechmannwrote: Hi all, I am looking for beryllium substrates for Rutherford Backscattering (RBS) analysis. There seems to be no more supplier due to berylliums toxicity. I can buy thin foils at STREM for example, but I need a rigid substrate at least 10 mm in diameter and at least 200 um thick. I'd be very grateful for any help, Stefan. ------------------------------------------- Stefan Wiechmann Technical University of Hamburg-Harburg Micro Systems Technology 4-07 Eissendorfer Str. 42 21073 Hamburg GERMANY Tel: ++49 (0)40 42878 2397 Fax: ++49 (0)40 42878 2396 _______________________________________________ MEMS-talk@memsnet.org mailing list: to unsubscribe or change your list options, visit http://mail.mems-exchange.org/mailman/listinfo/mems-talk Hosted by the MEMS Exchange, providers of MEMS processing services. Visit us at http://www.memsnet.org/ 1-360-263-8011