NASA/Langley Research Center, Mail Stop 144, Industry Assistance Office, Hampton, VA 23681-0001

95 -- GRADE 200 MARAGING STAINLESS STEEL DUE 081597 POC Linda P. Fitzgerald, Procurement Analyst, Phone (757)-864-2461, Fax (757) 864-7898, Email L.P.FITZGERALD@larc.nasa.gov -- Lisa M. Harvey, Contract Specialist, Phone (757)-864-2444, Fax (757) 864-8863, Email L.M.HARVEY@larc.nasa.gov WEB: Click here for the latest information about this notice, http://procurement.nasa.gov/EPS/LaRC/date.html#SS270. E-MAIL: Linda P. Fitzgerald, L.P.FITZGERALD@larc.nasa.gov. NASA Langley Research Center is hereby soliciting information for potential sources for GRADE 200 MARAGING STAINLESS STEEL in various shapes and sizes, including round and rectangular stock. No solicitation exists; therefore, do not request a copy of the solicitation. Grade 200 Maraging Steel shall be in accordance with the following: A. Shall be an induction vacuum melted/consumable electrode vacuum remelted alloy steel B. Shall be in accordance with MIL-S-46850D as amended 22 November 1991 for a Type IV Grade 200 classification but with the following exceptions; 1. Paragraph 3.3 (TABLE I.) with regard to the chemical composition: Element Content (percent by weight) Nickel 18.25 -- 18.75 Cobalt 0.50 max Molybdeum 2.85 3.15 Titanium 0.68 -- 0.78 Aluminum 0.05 -- 0.15 Carbon 0.10 max Manganese 0.10 max Silicon 0.10 max Tungsten 0.15 max Chromium 0.45 max OR 1. Paragraph 3.3 (TABLE I.) with regard to the chemical composition: Element Content (percent by weight) Nickel 17 -- 19 Cobalt 8.00—9.00 max Molybdeum 3 -- 4.5 Titanium 0.15 -- 0.30 Aluminum 0.05 -- 0.15 Carbon 0.10 max Manganese 0.10 max Silicon 0.10 max Tungsten 0.15 max Chromium 0.45 max 2. Paragraph 3.5.1 (TABLE II.), the minimum Charpy V-notch Impact Energy Toughness shall be 20 foot-pounds, in lieu of the stated 26 foot-pounds, tested to a minimum of at least -300 deg F. 3. Paragraph 3.5.3, Fracture Toughness, data KIC shall be provided for information only, in lieu of being a minimum requirement. 4. Paragraph 3.2 (Material Conditions), first sentence shall be changed to read: Unless otherwise specified, the material shall be furnished in the solution-annealed (A), descaled, and oiled condition, or machined sufficient to allow ultrasonic inspection 5. Paragraph 3.11 (Workmanship) shall be deleted and replaced with the following: The bar, plate, sheet, strip, forging or extrusion shall be uniform in quality and condition, smooth, and free from defects, such as pits, laps, cracks, flakes, twists, seams, heat checks, slag, hard spots, porosity, slivers, scabs, rolled-in scale, fissures, gas cavities, sponginess, segregations, and non-metallic inclusions to the satisfaction of a visual inspection. 6. Paragraph 6.2 (f) -- (Acquisition Requirements). Transverse mechanical properties not required. C. Shall be ultrasonically inspected in conformance with the attached NASA Technical Memorandum 84625 and satisfy the conditions for a Class AA straight beam inspection and a Class 1 angle beam inspection. REQUESTS FOR DEVIATIONS SHALL BE ADDRESSED AS INDICATED BELOW IN PARAGRAPH E. D. Material certification(s) and inspection report(s) shall be furnished to the Government at the time of delivery. The Government reserves the right to perform a repeat ultrasonic inspection to verify the material at delivery prior to acceptance. E. Vendors having the capabilities necessary to meet or exceed the stated requirements are invited to submit appropriate documentation, literature, brochures, and references. Specifically, technical product data of the proposed alloy that meets the above specification and current nominal price per lb. shall be submitted. Also address any minimum lot sizes in terms of dimensions and weight requirements. Please provide a list of references/prior customers of this alloy, with emphasis on cryogenic applications. Responses should be submitted to NASA Langley Research Center, Attn: William M. Kimmel, Mail Stop 238, Hampton, VA 23681-0001 or by e-mail to w.m.kimmel@larc.nasa.gov. In addition, any deviations from Paragraph C. above, which addresses ultrasonic inspection, SHALL be formally submitted and addressed to the Primary Point of Contact listed above. In any resultant contract, NASA intends to reserve the right to witness the ultrasonic inspection at the Offeror s facility Please advise if the requirement is considered to be a commercial or commercial-type product. A commercial item is defined in "Note A". This synopsis is for information and planning purposes and is not to be construed as a commitment by the Governmentnor will the Government pay for information solicited. Respondents will not be notified of the results of the evaluation. Firms responding should indicate whether they are a socially or economically disadvantaged business firm, an 8(a) firm, a small business, and/or woman-owned business. The Government reserves the right to consider a small business or 8(a) set-aside based on responses hereto. All responses shall be submitted to identified point of contact no later than 08/15/97. In responding reference ss270. Any referenced numbered notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nnotes.htm . (0219)

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