1、A-A-52516 = 9999974 0366620 74T MET RI CJ September 7, 1995 SUPERSEDING 7 July 1987 MS52 124 22 September 1972 A-A-525 18 ZZ-T-4 16H COMMERCIAL ITEM DESCRIPTION TIRE, PNEUMATIC: RETREAD AND REPAIR MATERIALS (METRIC) The General Services Administration has authorized the use of this commercial item d
2、escription (CID), for all federal agencies. 1. Scnpe. This CID covers materials and related products for retreading and repairing pneumatic tires used on ground vehicles. 2.1 Materialsandrelatedproducts. Materials and related products covered by this CID shall be of the following types: 2.1.1 and st
3、yles. Tvoe Material Class Style I Tire repair materials Tread gum A Cushion rubber gum B All purpose gum C Low temperature cure gum D Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which may improve this document should be sent by letter to: U.S.
4、Amy Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E, Warren, MI 48397-5000. l3ISTRTRUTTON STATEMENT A. Approved for public release; distribution is unlimited. FSC 2640 Licensed by Information Handling ServicesA-A-525L 9999974 OLb2L bb = A-A-52518 TYP Material II Tire retreading materials Tre
5、ad rubber cushion Bevel stock Wing stock Wing stock (valley) Cushion gum facing Strip form stock hot tread application Cold wind stock Padding stock Filler strip stock Stripping stock Tread rubber Precured tread Relugging Nylon fabric Patches Patch plug and patch mold unit Patches, chemical cure Flu
6、id, vulcanizing Vulcanizing cement, cold Vulcanizing cement, hot Technical talc Rubber solvent Mold lubricant Crayon, rubber marking III Repair fabric and patches IV Processing materials application rubber application 3. Salient characteristics Class A A A A A A B C D E F G A A A, B A B A A B C D E.
7、 Style 1 2 2 3 4 uc, sc cc 1 2 3.1 Materials. The materials and related products covered by this CID shall conform to the physical properties and performance requirements specified herein. After proper installation. the repair and retread materials shall be of a qualiiy capablc of withstanding norma
8、l servicc conditions, The use of recovered material niade in compliance with regulatory rcquiremcnts is acceptable providing that all requirements of this CID are mci (see 6.6). 2 Licensed by Information Handling ServicesA-A-525L rn 9999974 O368822 512 rn A-A-52518 3.1.1 Material.variety. This CID d
9、oes not include all varieties of materials which may be used by the retreading industry, and shall not prohibit the use of such materials if the quality of the end product is not compromised. 3.2 Material definitions. Materials referenced in this CID are defined as follows: 3.2.1 Rubber. Rubber used
10、 to prepare rubber compounds described in this CID and also listed in ASTM D1418 are natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene butadiene rubber (SBR), and rubber hydrocarbon content (RHC). 3.2.2 Carbon black. Carbon black used to prepare tread rubber compounds describ
11、ed in this CID shall be tread type carbon black High Abrasion Furnace (HAF) quality to better (N300 Series ASTM 01765). 3.3 Tire repair materials, type I. All tire repair materials shall meet the requirements of table I and be furnished as specified in table III. 3.3.1 Gum materials (classes A, B, C
12、). Gun1 materials shall meet the applicable requirements of table I for class C, and table II for classcs A and B. and shall be suitable for their intended purpose (see 6.1). 3.4 Tire retreading materials, type Il. The rubber compounds used for retreading tires shall conform to the applicable physic
13、al properties specified in tables I and II, and be furnished as specified in table III. 3.4.1 Physical properties variation. Tread rubber compounds shall have a variance in tensile stress of + 1380 kiloPascal (kPa) at 300% elongation. specific gravity + 0.015 and Shore A hardness + 3 points. The pro
14、perties shall be verified by ASTM D746. 3.4.2 Cushion gum facing. Bevel and wins die size tread rubber shall be faccd with rubber compound not less than .432 mm thickness tor ruck and 3.3 mm thickness for passenger car. 3.4.3 Curing methods. Unvulcanized tread rubber shall be capable of curing (vulc
15、anization) at a matrix surface temperature of not less than 145C. 3.4.4 Storage stability of strip tread rubber. Uncured iread rubber shall be subjected to oven aging at 70 + 1 “C for 70 hours. During oven aging, the material shall be encloscd in cellophane and suspended in the oven. After cooling i
16、o room icnipcrature, the change in properties shall not exceed the limits in table IV when the strip stock is compression molded thereafter in a platen press. Licensed by Information Handling Services - A-A-52518 9999974 0168823 459 W A-A-525 18 3.4.5 shall contain antioxidants and antiozonants of a
17、 quality to provide standard commercial resistance to weathering. . .e+treadrubber ozone resistance. Tread rubber used for commercial tires 3.4.6 Milky tirefreabrub ber ozone resistance. Tread rubber used for retreading nondirectional military tires shall be ozone resistant. 3.4.7 Striofomutd: I - _
18、 I not less than 1 complete tire. - 2/ Tapered to a thin edge. 9 Licensed by Information Handling ServicesA-A-5251 8 TABLE IV. Change in properties after oven aging of uncured stock and subscqucnt press cure. 1 Change Maximum limit (%) Tensile strength Ultimate elongation Hardness durometcr - 1/ The
19、 marking codc TABLE V. CID PIN A52518-1 A52518-2 A52518-3 A52518-4 A52518-5 A52518-6 A525 18-7 A52518-8 A52518-9 45251 8-10 4525 18-1 1 452518-1 2 A52518-14 A52518-13 452518-15 452518-16 452518-1 7 452518-1 8 4525 18- 19 4525 18-20 4525 18-21 452518-22 452518-23 452518-24 45251 8-25 Patch construct
20、ion and idcntificat ion. I Foriiicr MS Pari Nunibcr MS52 124- 1 MS.53174-2 MS52 124-4 MS52 1 24-5 MS52174-7 MS52 124-S MS52 174-3 MS52 124-0 MS52 124-9 MS52174-10 MS52 174- 1 1 MS52124-17 MS5217-I-I4 MS57 174- 1.3 MS52 174- 1 5 MS52 124- 1 6 MS52 134- 1 7 MS52174-18 MS52I 24- I9 MS52 124-70 MS5212-I
21、-31 MS52 12-4-22 MS52 12-4-23 MS5212-t-25 MS5212-1-24 Marking Code li k4EStI - O - A MESI1 -O - A MES11 - O - A MESII - O - A 3-6-6 7- 19-6 7 - 13 - 10 .i - IC) - 10 3 - 13 - 14 4 - I9 - 14 4-75-14 6-38- 14 6 - 64 - 14 6-76- 14 8-51 - 18 8-76- 18 8-89. i8 10 - 76 - 24 12 - I57 - 28 14 - 137 - 37 16
22、- 137 - 36 18 - 178 - 36 4 - 76 - I 4- IU3-1 6- 140-T - I Overall Patch Dimension mm) JI 60 79 118 76 102 127 i 52 178 203 254 353 305 356 356 4-32 48 3 559 610 660 71 1 762 305 356 483 :notes the number of plies in the patch. the maximum injury size in mm and the ply rating of the tire for which th
23、e paich is intended. Example: 6 - 102 - 8/12 indicates 6 plies to the patch, 102 mm maximum tire injury size and patch suitable Cor 8 and 12 ply tires. A “O“ indicates nail hole injury size, “.4“ indicates use with all ply ratings. and “T“ indicates tractor tires. 10 Licensed by Information Handling
24、 ServicesA-A-525 18 iechanical pr TABLE VI. Vulcanizing cement physical and r 4 Vulcanizing cement Brush grade Style 1 I 10 1 400-4000 Brook field percent (Centipoise) Minimum viscosity 11 solid - Spray grade Style 1 I 4 I 20-65 Hot Rubber Application, Style 2 6 20 minimurr Minimum storage life (mon
25、ths) 12 12 - 1/ Based on a number 3 spindle at 6 rpm. iperties. 6.2.2 Non-Government documents. Copies of ASTM D746 “Standard Test Method for Brittleness Temperature of Plastics and Elasomcrs by Impact“. ASTM D 1418 “Rubber and Rubber Latices - Nomenclature, Practice for“ and ASTM D 1765 “Carbon Bla
26、cks Used in Rubber Products Classification System“ are available from the American Society for Testing and Materials, 1916 Race Street, Philadelphia. PA 1910.3. 6.2.2.1 Tire and rim yearbook. Copies of “Tirc and Rim Association Yearbook“ are available from the Tire and Rim Association, Inc., 3200 We
27、st Markct Street, Akron, OH 44313. 6.3 Ordering data. Acquisition documents must spccity the following: a. Title, number, and date of this CID. b. PIN number and quantity requircd. c. Issue of DODISS to be cited in the soliciiaiion aiici thc specific issue of individual documents referenced. d. Sele
28、ction of applicable levels and packaging rcqiiircments. e. Type, class, and style of material required. f. Type of vehicle service for tread rulhci-. g. Physical properties if other than spccificd. h. Low temperature properties. if required. i. Strip form stock dimensions. j. Applicable CIDSS. 11 Li
29、censed by Information Handling ServicesA-A-52518 9999974 0168831 525 A-A-52518 6.4 Eartaridentificationnumber (PIN). The PINS to be used for materials acquired to this CID are created at follows: A 52518-XX - Dash number CID number CID designator 6.5 Crosse. Pneumatic tire retread and repair materia
30、ls conforming to this CID are interchangeablehbstitutable with retread and repair materials conforming to ZZ-T416H and MS52124. 6.6 Begtiiab. The offerorkontractor is encouraged to use recovered materials in accordance with Pubic Law 94-580 to the maximum extent practicable. MILITARY INTERESTS: Custodians : Amy - AT Air Force - 99 Review Activities: Navy - MC Air Force - 84 CIVIL AGENCY COORDINATING ACTIVITY: DOT - AC0 USDA - AFS JUSTICE - FPI GSA - FSS PREPARING ACTIVITY: Army - AT (Project 2640-0209) 12 I Licensed by Information Handling Services
