1、flIL-C-b3198 C11 777770b 1725228 T43 MIL-P-63198 (AR) AMENDMENT 1 1 April 1992 MILITARY SPECIFICATION PRIMER, STAB: PA505 PARTS FOR, AND LOADING, ASSEMBLING AND PACKING This Amendment forms a part of Military Specification MIL- P163198 (AR), dated 14 October 1977, and is approved for use by the US A
2、rmy Armament, Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 14 4.5.2: Delete paragraph 4.5.2 in its entirety and substitute A tared dried aluminum dish 2 inches in diameter shall be covered with a sheet of polytetrafluoroe
3、thylene (PTFE) 2- 112 inches square and sufficiently flat to form a tight cover. An accurately weighed portion of approximately 2 grams shall be transferred to the moisture dish while both the cover and dish are on the balance pan. The dish and contents shall be transferred to an oven and dried at 9
4、5 +/- 5 degrees C for 2 hours. The cover shall be placed in a desiccator during the drying period. After drying, the dish shall be quickly transferred to the desiccator and allowed to cool to room temperature. The PTFE cover shall be placed on the dish and the assembly weighed. The loss in weight sh
5、all be calculated to percentage of moisture in the lead azide has follows: fi 4.5.2 Determination of moisture content of lead azide. Percentage of moisture = 100(A - B) A Where : A = weight of specimen before drying B = weight of specimen after drying 4.5.2.1 Determination of moisture content of lea
6、d azide, alternate method. The procedure is the same as paragraph 4.5.2 with the following exception. The sample shall be dried in a vacuum oven at a temperature of 95 +/- 5 degrees C and a pressure of 80 +/- 10 mm mercury for 45 minutes. I 1 of 2 AMSC NIA FSC 1375 DISTRIBUTION STATEMENT A. Approved
7、 for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63198 (AR) AMENDMENT 1 4.5.3: substitute: e “4.5.3 Delete paragraph 4.5.3 in its entirety and Determination of moisture content of primer mixture. o
8、f the primer mixture to a tared aluminum weighing dish provided with a polytetrafluroethylene (PTFE) cover while both the dish and cover are on the balance pan. dish and contents with the cover removed in an oven maintained at 60 +/- 5 degrees C for 2 hours. shall be placed in a desiccator during th
9、e drying period. After drying, transfer the dish and contents quickly to a desiccator and cool to room temperature. cover and weigh. the cover, and the contents to percent moisture in the sample. mixture, alternate method. The procedure is the same as paragraph 4.5.3. with the following exception. T
10、he sample shall be dried in a vacuum oven at a temperature of 60 +/- 5 degrees C and a pressure 80 +/- i0 mm of mercury for 45 minutes. Transfer weighed portion of approximately 1 gram Place the The cover Replace the PTFE Calculate the loss in weight of the dish, 4.5.3.1 Determination of moisture content of primer Custodian: Army-AR Preparing activity Army-AR (Project 1375-A480) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
