1、METRIC BUgustL4,1995 SUPERSEDING 15 August 1991 (see 5.5) A-A-525 15 MIL-P-62426(AT) COMMERCIAL ITEM DESCRIPTION POWDER, CHROMIUM CARBIDE-NICKEL CHROMIUM ALLOY (METRIC) The General Services Administration has authorized the use of this commercial item description (CID) for all federal agencies. 1. S
2、COPE. This CID covers a two-component powder containing chromium carbide and nickel chromium alloy particles mechanically distributed in a uniform mixture (75 chromium carbide and 25 nickel chromium) used in plasma spray coating operations. This powder is primarily intended for use as an anti-fretti
3、ng coating for use in environments up to 815 degrees Celsius (“CI. 2. SALTENTCHARACTERISTICS 2.1 Materials * . Unless otherwise specified herein. the materials used shall be in accordance with the manufacturers materials specification. The use of recovered material made in compliance with regulatory
4、 requirements is acceptable providing all requirements of this CID are met (see 5.5). 2.1.1 Formiilation - . The two component mixture shall consist of the percentage by weight as shown in table I. Beneficial comments, recommendations, additions, deletions clarifications, etc. and any other data whi
5、ch may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E, Warren, MI 48397-5000. FSC 9630 IJTION sTATEMF.NT 4. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitt
6、ed without license from IHS-,-,-A-A-52515 9999974 OLbOb2 9L11 Sieve designation l/ A-A-525 15 % by weight Weight Chromium Nickel Passed carbide chromium alloy through sieve TABLE I. Component. percentages .by_Keight. I Component I Percentage (%I Micrometer 53 I B (Nickel chromium alloy) I Remainder
7、74-76 A (Chromium carbide) Mesh Min Max Min Max 270 100 - 1 O0 X - 2.1.2 huickme . The particle size distribution by weight shall be as shown in table II. Elements Manganese Silicon Iron Carbon Chromium Nickel TABLE II. Earticksize distribution bvJ-eight. % by weight Chromium carbide Nickel chromium
8、 alloy Min Max Min Max 2.5 1.5 1 .o - - - - o. 1 - - 0.7 - - 0.25 12.5 - 85.5 - 18.0 22.5 - - 76.0 80.0 Weight Retaine d on sieve I 45 I 325 I - I 1 I - I 1 I I I 5 - 5 X I 1/ Sieve designation in accordance with ASTM El 1. 2.1.3 Chemicalcornpition. The chemical composition of the material shall con
9、form to the percent by weight for each element as specified in table III. TABLE III. Chemical comDosition. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52515 m 9999974 O1b8Ob3 888 m A-A-52515 * 2.1.4 hpertk. The material shall meet the foll
10、owing properties when applied (plasma sprayed) to iron, and nickel-base alloys. a. Bmbmqgh. The bond strength of the plasma-sprayed material shall be not less than 31 megapascals (MPa). b. Cuptest. The amount of draw before spalling of the coating shall not be less than 5.1 millimeters (mm) . 2.2 ho
11、lding the following quantities of powder: 0.5, 1.0,2.5,5.0 and 10.0 kilograms (kg) The containers shall be sealed moisture proof units and large enough to pennit mixing the powder within before use. The containers shali be capable of protecting the powder against damage or contamination until it is
12、ready to be used. . Unless otherwise specified (see 5.3), the unit containers shall be capable of 2.3 Iden- . The identification markings shall be permanent and legible and shall include, as a minimum, the manufacturers CAGE code, part number, and lot number and the part or identification number (PI
13、N) (see 5.3). 2.3.1 Laheling. Unit containers and packages shall be conspicuously labeled “CAUTION: Containers contain powder metal. Use approved respirator.“ 2.3.2 Cantainer. Each container shall be marked “Chromium carbide-nickel chromium alloy powder“. 3. QUALITY-YISIONS 3.1 Reswforpciion. The co
14、ntractor is responsible for the performance of ali inspections (examinations and tests). 3.2 that the product offered meets the salient characteristics of this commercial item description and that the product conforms to the producers own drawings, specifications, workmanship standards, and quality
15、assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be otherwise provided for under the provisions of the contract. * . The contractor
16、shall certify and maintain substantiating evidence 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-525 15 Preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order (see 5.2). 5. NOTES (This section c
17、ontains information of a general or explanatory nature that may be helpful, but is not mandatory.) 5.1 eferenced documents. . Copies of ASTM El 1 “Standard Specifications for Wire 5.1.1 u Cloth Sieves for Testing Purposes” are available from the American Society for Testing and Materiais, 1916 Race
18、Street, Philadelphia, PA 19103. .I 5.2 Orderingdata. Acquisition documents must specify the following: 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 indi
19、vidual document referenced. c. Selection of applicable level and packaging requirements. d. Unit container and PIN number. e. Unit container size if other than specified. 5.3 Part or identification number (PIN). The PINS to be used for powder acquired to this CID, are created as follows: A 52515 -X
20、-Unit of Measure 1 = 0.5 kg 2= 1.0 kg 3 = 2.5 kg 4 = 5.0 kg 5 = 10.0 kg CID number Designates a CID 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52515 . PIN A52515-1 A52515-2 A52515-3 A52515-4 A525 15-5 5.4 m. Powder conforming to this CID i
21、s interchangeable/substitutable with powder conforming to MIL-P-62426(AT). Cross reference to former part number is as indicated in table IV. t Former PIN No. M62426- 0.5 kg M62426- 1.0 kg M62426- 2.5 kg M62426- 5.0 kg M62426- 10.0 kg TAB Unit 1.0 kg 2.5 kg 5.0 kg 10.0 kg 5.5 specification M3965A, d
22、ated 26 April 1982. . This CID supersedes Textron Lycoming (Allied Signal) internal 5.6 Rqghmpqreauiremems. The offerodcontractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practicable. MILITARY INTERESTS: Custodian: Army - AT CIVIL AGENCY COORDINATING ACTIVITY: GSA-FSS PREPARING ACTIVITY: Amy - AT (Project 9639-0032) t 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
