1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to usarmy.detroit.rdecom.mbx.tardec-standardizationmail.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/ST
2、ND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 2640 METRIC A-A-52469A April 5, 2012 SUPERSEDING A-A-52469
3、 July 28, 1993 COMMERCIAL ITEM DESCRIPTION CEMENT, TREAD, RUBBER (METRIC) The General Services Administration has authorized the use of this commercial item description (CID) as a replacement for MIL-C-62123A(AT) for all federal agencies. 1. SCOPE. This CID covers commercially manufactured cements c
4、ontaining resins which are used by the tire retreading industry for applying hot freshly extruded tread rubber compound to buffed tire casings upon which such resin base cements have been sprayed. The cement covered by this CID is intended for use in retreading tires used on military wheeled vehicle
5、s. 2. SALIENT CHARACTERISTICS 2.1 Materials. The cement to be furnished shall be similar to resin based cements developed for, and used by, the tire retread industry for production of quality retread tires built with hot, extruded tread compound. The finished product shall conform to the requirement
6、s of ZZ-T-441 when standard shop practice is used for retreading. 2.1.1 Rubber content. The cement shall contain natural, synthetic natural (cis 1-4 polyisoprene), or styrene-butadiene rubbers in any combination, but shall not contain reclaimed rubber. 2.1.2 Resin content. The cement shall contain r
7、esins dissolved in organic solvents such that the hot extruded tread rubber, when applied at a temperature of 93 degrees Celsius (C), shall be held firmly to a buffed, cemented tire carcass without loosening, sagging, or drooping during and after the period in which the tread stock cools. Provided b
8、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52469A 2 2.2 Adherence capability. The buffed cemented tire shall retain the capability of accepting and adhering to the hot extruded tread rubber for at least 5 hours after the cement has been applied. 2.3 C
9、ement adhesion. The cement adhesion strength of 21.4 kilograms per centimeter (cm) of width shall be attained after curing. This shall be verified by preparing and testing two specimens in accordance with the cement adhesion test of A-A-52518 or other similar test which produces comparable results.
10、2.4 Solubility of resin cements. The addition of rubber solvent shall not cause galling of cement. Rubber solvent addition shall not cause precipitation or settling in the cement so that it cannot be re-dispersed by stirring. The rubber solvent shall consist of a high grade petroleum distillate that
11、 is water-clear, free from foreign material, acid, oil, water, or anti-knock materials. The solvent shall have a boiling range of 38 to 60 C initial, 93 to 138 C end point with no oil residue. 2.5 Viscosity. The viscosity of the resin cement shall be suitable for spray application as removed from th
12、e container. Viscosity shall range between 20 to 65 centipoises at 23 C. Viscosity shall be verified in accordance with method B of ASTM D1084. 2.6 Total solids. The total solids content of the cement shall not be less than 7% by weight. 2.7 Storage stability. The cement shall be usable for 1 year f
13、rom date of manufacture when stored at temperatures not exceeding 24 C. 2.8 Material safety data sheet (MSDS). When applicable an MSDS shall be prepared in accordance with FED-STD-313 (see 6.2 and 6.3). 3. REGULATORY REQUIREMENTS. The offeror/contractor is encouraged to use recovered materials to th
14、e maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 4. PRODUCT CONFORMANCE PROVISIONS 4.1 Responsibility for inspection. The contractor is responsible for the performance of all inspections (examinations and tests). 4.2 Contractor certificat
15、ion. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this CID and that the product conforms to the producers own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects
16、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. Provided by IHSNot for ResaleNo reproduction or networking permit
17、ted without license from IHS-,-,-A-A-52469A 3 5. PACKAGING. Preservation, packing, and marking shall be as specified in the contract or order (see 6.2). 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Addresses for obtain
18、ing copies of referenced documents. 6.1.1 Government specifications and standards. Copies of FED-STD-313 “Material Safety Data, Transportation Data and Disposal Data for Hazardous Materials Furnished to Government Activities”, A-A-52518 “Tire, Pneumatic: Retread and Repair Materials (Metric)”, and Z
19、Z-T-441 “Tire, Pneumatic: Retreaded and Repaired” are available from https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. 6.1.2 Non-Government publications. ASTM D1084 “Standard Test Methods for Viscosi
20、ty of Adhesives” is available from www.astm.org or ASTM International, P.O. Box C700, West Conshohocken, PA 19428-2959. 6.2 Ordering data. Acquisition documents should specify the following: a. Title, number, and date of this CID. b. If required, the specific issue of individual documents referenced
21、. c. Identify activities requiring copies of completed MSDS and specify when the MSDS will be inspected. d. Selection of applicable level of packaging requirements. 6.3 MSDS. Contracting Officers should identify those activities that require copies of completed MSDS prepared in accordance with FED-S
22、TD-313. The pertinent Government mailing addresses for submission of data are listed in appendix B of FED-STD-313. 6.4 Cross reference data. Cement conforming to this CID is interchangeable with cement conforming to MIL-C-62123A(AT), dated 22 June 1987. Provided by IHSNot for ResaleNo reproduction o
23、r networking permitted without license from IHS-,-,-A-A-52469A 4 MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY GSA - FAS Custodian: Army AT Preparing Activity: Army - AT (Project 2640-2011-002) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
