NASA/Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135

A -- EVALUATION OF SHEET GAMMA TIAL SOL RFQ126794 DUE 052799 POC Alice J. Wilson, Contract Specialist, Phone (216) 433-2552, Fax (216) 433-5489, Email Alice.J.Wilson@grc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/GRC/date.html#RFQ126794. E-MAIL: Alice J. Wilson, Alice.J.Wilson@grc.nasa.gov. NASA/GRC plans to issue a Request for Quotation (RFQ) for Evaluation of Sheet Gamma TiAl for Application as Thermal Protection System in Reusable Launch Vehicles Conduct microstructrual characterization of low cost processed XD gamma TiAl sheets (Ti-47Al-2Nb-2Mn-0.8vol% TiB2) Optimization of process parameters for brazing of gamma sheets with TiCuNi 70 filler alloy and diffusion bonding of gamma sheets Conduct hot forming of sheets into corrugations followed by brazing/diffusion bonding of these corrugations to a face sheet to form a subelement(decision on exact configuration will be made after consulting with NASA) This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/GRC intends to purchase the items from Pratt & Whitney (P&W),400 Main Street, East Hartford, CT 06108 THE AUTHORITY FOR OTHER THAN FULL AND OPEN COMPETITION is 10 U.S.C 2304(c)(1), only one responsible source and no other supplies or services will satisfy agency requirements. These sheets areprocessed by two methods: powder metallurgy (P/M) and ingot metallurgy (I/M) methods. Both these processes are expensive. under the EPM/Nozzle program an alternative rolling method was developed by P&W and Plansee, Austria in which cast gamma TiAl plates were directly rolled into thin sheets at elevated temperature. An estimated cost reduction by 35% is sprojected over the conventional P/M and I/M methods. This alternative process termed low cost process. Although the low cost process has been demonstrated for a nuumber of gamma TiAl alloys, only limited microstructural and mechanical property evaluations were made on these materials. The Government does not intend to acquire a commercial item using FAR Part 12. See Note 26. Interested firms have 10 days from the publication of this synopsis to submit in writing to the identified point of contact, their qualifications/capabilities. Such qualifications/capabilities will be used solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. Responses received after the 10 days or without the required information will be considered nonresponsive to the synopsis and will not be considered. A determination by the Government to not compete this proposed effort on a full and open competitive basis, based upon responses to this notice is solely within the discretion of the Government. Oral communications are acceptable in response to this notice. All responsible sources may submit an offer which shall be considered by the agency. OMBUDSMAN STATEMENT REQUIRED] An Ombudsman has been appointed. See Internet Note "B". Posted 05/18/99 (D-SN332825). (0138)

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