1、METRIC A-A-525 16 august 14,1995 SUPERSEDING 16 August 1991 (see 5.5) MIL-P-62424( AT) Beneficial comments, recommendations, additions, deletions clarifications, etc. and any other data which may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command, ATTN
2、: AMSTA-TR-E, Warren, MI 48397-5000. COMMERCIAL ITEM DESCRIPTION POWDER, YTTRIUM, ALUMINUM, NICKEL-CHROMIUM (METRIC) The General Services Administration has authorized the use of this commercial item description (CID) for all federa1 agencies. 1. SCOPE. This CID covers nickel-chromium, aluminum, ytt
3、rium (94Ni-Cr, 6A1,l.OY) powder used in plasma applications. This powder is primarily intended for use as a plasma spray deposited material providing increased oxidation and hot corrosion resistance. 2. SALLENTCHARACTERISTICS. 2.1 Materials * . Unless otherwise specified herein, the materials used s
4、hall be in accordance with the manufacturers materials specification. The use of recovered material made in compliance with regulatory requirements is acceptable providing all requirements of this CID are met (see 5.5). 2.1.1 Process. Powder shall be produced by vacuum or inert atmosphere melting pr
5、ocess followed by atomizing in an inert atmosphere. FSC 9630 PTSTWX?TJ.QN STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-525 16 Sieve designation i/ 71 Micrometer Mesh Percenta
6、ge (%) by weight Weight passed (Maximum) -kough sieve 2.1.2 lbmeaze * . The particle size of the powder shall be as specified in table I. 45 TABLE I. Earticlesize_distributi&. 325 20 X 75 I 200 I 5 I 2.1.3 percent by weight for each element as specified in table II. * * . The chemical composition of
7、 the material shall conform to the TABLE II. Chemicalcomposition. (%) by weight Elements Carbon Chromium Aluminum Yttrium Phosphorus Sulfur Nitrogen i/ Hydrogen il Other elements, Nickel total Y Minimum Maximum 0.02 23.00 11.00 1.20 0.01 o 0.010 0.020 (200 ppm) 2/ 0.005 (50 ppm) 0.50 Remainder Y Det
8、ermination of nitrogen and hydrogen elements shall not be required for acceptance. 2/ ppm = parts per million. Y Other elements are the sum percentage of individual elements that may be present but not mentioned specifically in the composition. The producer normally shall analyze only for impurities
9、 (elements) which are possibly present because of raw materials or manufacturing processes and which affect the product significantly. It is not implied by this statement that an analysis need be made for each element of he periodic table not mentioned specifically in the composition. L 2 Provided b
10、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52516 * 2.1.4 hpmtki. The powder shall meet the following properties requirements when applied (plasma sprayed) to steel and cobalt, and nickel-base alloys. a. Bond strength The bond strength of the plasma-sp
11、rayed material shall be not less than 28 megapascals (MPa). b. Cup test. The amount of draw before spalling of the coating shall not be less than 7.6 millimeters (mm). 2.2 . Unless otherwise specified (see 5.3), the unit containers shall be capable of holding the following quantities of powder: 0.5,
12、2.5 and 10 kilograms (Kg). The containers shall be sealed moisture proof units and large enough to permit mixing the powder within before use. The containers shall be capable of protecting the powder against damage or contamination until it is ready to be used. . 2.3 shall include, as a minimum, the
13、 manufacturers CAGE code, part number, lot number and the part or identification number (PIN) (see 5.3). gs. The identification markings shall be permanent and legible and 2.3.1 LabeIing. Unit containers and packages shall be conspicuously labeled “CAUTION: Containers contain powder aluminum. Use ap
14、proved respirator.” 2.3.2 Container. Each container shall be marked “Nickel-chromium, aluminum, yttrium powder”. 3. QUAT.ITYASSURANCESIONS 3.1 Eesponsibilitvform. The contractor is responsible for the performance of ali inspections (examinations and tests). 3.2 that the product offered meets the sal
15、ient characteristics of this commercial item description and that the product conforms to the producers own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right t
16、o require proof of such conformance prior to the first delivery and thereafter as may be otherwise provided for under the provisions of the contract. atim. The contractor shall certify and maintain substantiating evidence 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without
17、 license from IHS-,-,-A-A-52516 9 9999974 OLb8069 2Tb = A-A-525 I6 Preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order (see 5.2). 5. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandator
18、y.) 5.1 * * coDiesofenceci.documents. . Copies of ASTM Ell “Standard Specifications for Wire 5.1.1 Cloth Sieves for Testing Purposes” are available from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103. 5.2 Q&mnh . Acquisition documents must specify the follow
19、ing: a. Title, number, and date of this CID. b. Issue of Department of Defense Index of Specifications and Standards (DODISS) to be cited in the solicitation, and if required, the specific issue of individual documents referenced. c. Selection of applicable level and packaging requirements. d. Unit
20、container and PIN number. e. Unit container size if other than specified. 5.3 PartM-umbedm). The PINS to be used for powder acquired to this CID, are created as follows: Unit of Measure 1 = 0.5 Kg 2 = 2.5 Kg 3 = 10.0 Kg I -CIDnumber Designates a CID 4 Provided by IHSNot for ResaleNo reproduction or
21、networking permitted without license from IHS-,-,-A-A-5253b 9999974 O368070 TI8 D Unit Container size 0.5 Kg 2.5 Kg 10.0 Kg A-A-52516 * Former PIN PIN No. A52516-1 MS62424-0.5Kg A525 16-2 MS62424-2.5Kg A52516-3 MS62424-10.OKg 5.4 m. Powder conforming to this CID is interchangeable/substitutable with
22、 in table IV. i powder conforming to MIL-P-62424(AT). Cross reference to former part number is as indicated I TABLE IV. Crosxreference. 5.5 7 . This CID supersedes Textron Lycoming (Allied Signal) internal specification M3960B, dated 26 April 1982. 5.6 l&qmqreauirements. The offeror/contractor is en
23、couraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practicable. MILITARY INTERESTS: Custodian: Amy - AT CIVIL AGENCY COORDINATING ACTIVITY: GSA-FSS PREPARING ACTIVITY: Army - AT (Project 9630-0034) c r 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
