1、MIL-N-51L12A (2) 42 m 79c37706 0234541 3 m MIL-N-5 1112A( EA ) AMENDMENT 2 16 July 1986 . SUPERSEDING AMENDMENT 1 . 14 March i986 1 MILITARY SPECIFICATIB NOSECUP-DEFLECTOR, -C11 This amendment forms a part of MIL-N-51112A(EA) , dated i7 January 1977, and is-approved for use within the Chemical Resea
2、rch, Development and Engineering Center, Department of the Amy and is available for use by all Departments and Agencies of the Department of Defense. . PAGE 3- Add to paragraph 2.2 ASW standards: “D 1925 - Yellowness Index of Plastics“. PAGE 4 Replace paragraph 3.2.2 “Test Slabs“ with the following:
3、 “3.2.2 Test slabs and equivalent cure. Test slabs shall be mlded from stlock representative of the formulation used for preproduction sample and from each sublot during regular production of nosecups in accordance with ASTM D 3182. nosecups. formance with table I at a given cure time and temperatur
4、e and that the percent free sulfur of the slab and the part are equivalent. be submitted in accordance with 4.1.2.3. Once cure time and cure temperature are established, they may not change during production.“ The slabs shall have a cure equivalent to that of regular production Equivalent cure is es
5、tablished when physical properties are in con- Objective evidence shall. Paragraph 3.3.1: Delete “There shall be no visual discoloration of lenses“ and replace with the following: “The ayerage yellowness index of the lenses, when tested in accordance with ASTM D 1925, shall be no more than 14. and n
6、o individual specimen shall be more than 16.“ FSC 4240 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. 1 of 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-51112A( EA) AMENDMENT 2 PAGE 7 Add the following new
7、 paragraph 4.1.2.3: “4.1.2.3 Equivalent cure. After date of award of contract, and prior to submission of preproduction, and without additional cost to the Government, the contractor shall submit the information listed below which will constitute evi- dence for establishing equivalent cure for a giv
8、en formulation at optimal cure time and cure temperature for each mold used. (a) Different combinations of cure time and temperature for slabs and parts, approaching and surpassing optimum cure shall be furnished. (b) Percent free sulfur for slabs and parts shall be furnished for each time/temperatu
9、re combinations. (c) All physical property data from table I shall be generated for slabs and shall be furnished for each time/temperature combination. addition, any physical property data from table I which can be generated for nosecups shall be furnished for each time/temperature combination. In (
10、d) Any other information and data which substantiates the equivalency of cure at the established cure time and cure temperature.“ Custodian : Army - EA 2 Preparing activity: AIXIY - EA Project No. 4240-A854 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
