1、MIL-P-qb77qB L3 W 77777b 0335205 “ 7 4 January 1982 SUPERSEDING (See 6.8) MILITARY SPECIFICATION PELLETS/GRANULES BORON/POTASSIUM NITRATE This Specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers seven (7) types
2、 of igniter pellets/granules for use in rocket motors and fuzes. (see 6.8) 1.2 Classification. Igniter pellets/granules covered by this specification shall be of the following types and classes, as specified (see Tables III and IV): Type I - Cylindrical Type II - B1 - Convex Type III - Modified Cyli
3、ndrical Type IV - As per Drawing 9234458 or Drawing 9311312 (see 2.1) Type V - As per Drawing 657421 (See 2.1 and 6.8) Class 1. Crush Strength: Axial 18,5009, Radial 18,OOOg Class 2. Crush Strength: Axial 7,50g, Radial 7,5009 Class 3. Crush Strength: Axial 3,0009, Radial 2,0009 Type VI - As per Draw
4、ing SK445983 (See 2.1) Type VII - Oblate Spheroid Granules Class 1. 5% max. retained on USS Sieve No. 50 Class 2. 5% max. retained on USS Sieve No. 60 Class 3. 5% max. retained on USS Sieve No. 100 FSC: 1375 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
5、S-,-,-2. APPLICABLE DOCUMENTS 2.1 Issue of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent “ specified herein.- SPECIFICATIONS FEDERAL RR-S-366 PPP-C-96 PPP-B-636 MILITARY MIL-P-116 MIL-
6、B-L31 MIL-P-156 MIL-R-7575 MIL-B-51092 MIL-P-81351 MIL-P-82646 MIL-B-82647 MIL-B-117 MIL-BV-2427 STANDARDS MILITARY MIL-STD-105 MIL-STD-109 MIL-STD-129 MIL-STD-286 MIL-STD-1168 MIL-STD-l218 MIL-STD-l233 ,3 c;* c 1 “ Ca“-. ;i. - Sieve, Test - Cans, Metal, 28 Gauge and Lighter - Boxes, Shipping, Fiber
7、board - Preserva tion, Packaging Method of - Barrier Material, Greaseproofed, - Potassium Nitrate - Resin, Polyester Low Pressure - Boron, Amorphous, Powder - Peroxide, Methyl Ethyl Ketone - Plastic Film, Conductive Heat- - Bag, Plastic, Conductive Heat- - Bags, Sleeves, and Tubing - Interior - Box,
8、 Ammunition Packing: Wood, Waterproofed, Flexible Laminating Sealable, Flexible Sealable, Flexible Packaging Nailed - Sampling Procedures and Tables for Inspection by Attributes. - Quality Assurance Terms and Definitions - Marking for Shfpment and Storage - Propellants, Solid: Sampling, Examination
9、and Testing - Lot Numbering of Ammunition - ACS Chemicals - Procedures for Determining ,Pa.$.tic.le.S.iz, ,i,.t.ic.le Size of Powdered Material. Distribiorl-AaP4ked Density a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-46994B DRAWINGS ARMY
10、9234458 Pellets, Ignition 9311312 Pellet NAVY .657421 Pellet, Boron Potassium Nitrate (Type I) SK445983 2-D Ignition Grain (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring a
11、ctivity or as directed by the contracting officer.) 2.2 Other-publications. The following document forms a part of this specification of the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids shall apply. CODE OF FEDERAL REGULATIONS, TITLE 49, TRA
12、NSPORTATION PARTS 100-199. (The Code of Federal Regulations is available from the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402.) Orders should specify “49 CFR 100-199“ (latest revision). ASTM-E11 - Testing Sieves and Their Uses AST“D2905 - Statements of Number
13、 of Specimens Required to Determine the Average Quality of a Textile Material (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Phila- delphia, PA 19013). (Technical society and technical association specifications and standards are gene
14、rally available for reference from libraries. They are also distributed among technical groups and using Federal agencies.) 3. REQUIREMENTS 3.1 Composition. 3.1.1 Material The constituent materials used in the manufacture of the igniter pellet shall comply with the following requirements: 3 7 Provid
15、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-P-qb97qB 23 977790b 0335208 4- = MIL-P-46994B Constituent Material Conforming to: Potassium Nitrate MIL-P-156 except par ticle size shall be 15 microns maximum (max.) (see 6.5.1) , Boron, Amorphous MIL-B
16、-51092 except parti- cle size shall be 1.5 microns max. and the Boron purity shall be 90% to 92% (see 6.5.2) Polyester Resin MIL-R-7575 Grade A, Class O, Form K (see 6.4.2) Peroxide, Methyl Ethyl MIL-P-81351 (see 6.4.3) Ketone Cobalt Naphthenate (see 6.4.1) 3.1.2 Formula-tion. The igniter compositio
17、ns shall be a homogeneous blend of materials complying with 3.1.1 which have been added in the following proportions (see 6.4, 6.5 and 6.6) TABLE I. Formulation Materials All types except Type IV Type IV Potassium Nitrate, % 70.7 + 2.0 72.2 + 1.5 Boron, Amorphous, % 23.7 T 2.0 22.2 T 1.5 Binder, % 5
18、.6 ? - 0.5 5.6 T - 0.5 3.1.3 Binder. The binder used in the formulation given in 3.1.2 shall be prepared in accordance with the following proportions (see 6.4) : TABLE TI. Bindgg-Canpositioq Ingredients Percent Polyester Resin, (see 6.4.2) 98.0 + 1.0 Catalyst, (see 6.4.3) 15 T 0.1 Accelerator, (see
19、6.4.1) 0.5 7 - 0.01 3.1.4 Boron. The. boron content in the igniter composition shall comply with the follow5ng when tested as.specigied in 4.6.8: Percent Boron Al Types, except Type IV: 21.5 + 2.0% Type IV:. 20.0 T - 1.5% 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without
20、 license from IHS-,-,-MIL-P-46994B 3.2 Dimensions. The pellets/granules shall conform to the dimensions specified in this specification and applicable drawings when determined as specified in 4.6.5. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
21、MIL-P-46994B Co Co O O O O I I h- WO7 oo* * * O0 . ooo“o O 7 H O 7 O +I Ln O w 1 a 3 IIIII IIIII IlIII IIIII IIIII IIIII IIIII IIIII IIIII IIIII 2 H W 1: 1 =I d-Lnacoa LnLnLnLnCo 00000 00000 000“ 00000 CI . . ooooco OCr)U3LOM +l+l+I+l I “Na- . =c;I . N -. CF q a h Ln co =II H NCr)MOO 0000- 00000 Na“
22、- 00000 00000 LnLnFMl- +.l+M$l+.l NNWd-$O “P“ . H 5 n * N d- h Ln =#= W a 3 H n W U v, XXKXX t“c. YYYYY HHHHH IIIII mmmmm HI O O W 7 Lo b F I O O Lo P m 1 N O v) O H 4 H -=c M N Lo QI- U 1. LI 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-4
23、b774B L3 77777Ob 03L.5212 b MIL-P-46994B 3.4 Cracks or laminations. The igniter pellets shall be free of cracks or laminations. 3.5 Granulation. The granulation for Type VII.shal1 be as specified in Table V when determined as specified in 4.6.9. TABLE V Size Requirements Class 1 2 3 Other granulati
24、5% Max. retained on USS Sieve No. 50 60 100 Special Granulations (See 6.1 and 6.7) 6 12 25 40 5% max. thru USS Sieve No. 60 100 140 12 25 50 140 ons may be spec if i ed for spec ia 1 applications. 3.6 First article inspection. This specification makes provisions for first article inspection. Require
25、ments for the submission of first article samples by the contractor shall be as specified in the contract (see 6.1). 3.7 Workmanship. All pellets and pakaging.material shall be free of dirt, grease and other foreign matter (see 4.4.2.1). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspect
26、ion - Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection
27、 requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections. are deemed necessary to assure supplies and services conform to prescribed requirements. Reference shall be
28、 made to MIL-STD-109 to define terms used herein. 4.2 Classification of. inspection. The inspection require- ments specified herein are classified as follows: a. First Article Inspection (see 4.3) b. Quality Cnformance Inspection (see 4.4) 8 Provided by IHSNot for ResaleNo reproduction or networking
29、 permitted without license from IHS-,-,-MIL-P-46994B 4.3 First- article- inspection. 4.3.1 Submission. The contractor shall submit a first article sample as designated by the Contracting Officer for evaluation in accordance with provisions of 4.3.2. The first article shall be sampled as described in
30、 4.5.1. The sample shall be obtained from the first production lot which. has been produced by the contractor using the same production processes, procedures and equipment as will be used in fulfilling the contract. All materials, shall be obtained from the same sources of supply as will be used in
31、regular production. 4.3.2 Inspections-to-be-performed. The sample will be subjected by the Government to any or all of the examinations or tests specified in this specification. 4.3.3 Reection. If any test specimen fails to comply with any of the “TI app Ica e requirements, the first article sample
32、shall be rejected. The Government reserves the right to terminate its inspection upon any failure to an assembly, component, or test speciment in the sample to comply with any of the stated requirements. 4.4 Quality- conformance- inspection. 4.4,l Lot-formation.- A lot shall consist of one or more b
33、atches of pellets/granules produced by one manufacturer, in accordance with the same specification, or same specification revision, under one continuous set of operating conditions. Each lot shall consist of that quantity of pellets/granules that has been subjected to the same unit chemical or physi
34、cal process intended to make the final product homogenous. The lot shall comply with the provisions for submission of product as specified in MIL-STD-105. The criteria and procedure for the assignment of lot numbers shall be in accordance with MIL-STD-1168. 4.4.2 Examination. Unless otherwise specif
35、ied sampling plans and procedures for major and minor defects shall be in accordance with MIL-STD-105, Inspection Level II. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl (II Cr a, PI a, c 0 H * m . W M b dp O Gv 9 ln W O O . . I I -4 c 14 c a,
36、 z O o“ (II 24 U rd U LI PI O W O -4 3 W Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-B rl t $i W O I n t rl r( rd m I 5 111 .rl -111 -4 3 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl m . m
37、 dp W O * rll 4 Q) O m 4 Po E r2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A r N NN m mm . *. OQ O dPOQ mm cy WU) O O0 1 5 a, .-I C W CI hi a, a m U LI d E. rlN O0 Ncv Provided by IHSNot for ResaleNo reproduction or networking permitted without
38、 license from IHS-,-,-. IIL-P-4bqqLtB 13 W 977770b 03152I,B 7 MIL-P-46994B 4.5 Testinq. PRECAUTION: This specification covers sampling and testing of toxic or hazardous materials. Accordingly, it is emphasized that all applicable safety rules, regulations and procedures must be followed in handling
39、and processing these materials. 4.5.1 Samplinq. 4.5.1.1 Samplinq- for-Boron-Content;-Moisture-and-Burnin Rate. Two separate representative samples of approximately QOOg each of the igniter blend shall be selected from each lot for these test. One sample shall be obtained prior to pelletizing and the
40、 second sample near the end of the pelletizing operation. The lot shall be rejected if either test sample fails to meet the requirements given in Table IV for Burning Rate, Moisture and Boron Content as given in 3.1.4 when tested in accordance with the applicable paragraph given in 4.6 (Burning Rate
41、 paragraph 4.6.2, moisture 4.6.6, Boron Content 4.6.8). 4.5.1.2 Sampling-Pellets-for-Required-Tests (see 3.2 and 3.3). A minimum of seventy five pellets shall be removed from the beginning of the pelletizing operation and a minimum of seventy five shall be removed from the end of the pelletizing ope
42、ration. These two sub samples shall be thoroughly combined to assure a random distribution and used for the following tests: Weight, Crush Strength, Heat of Reaction, Dimensions, Density. The lot shall be rejected if any test sample fails to meet the requirements specified on the applicable dr.awing
43、s or this specification. 4.5.1.3 Sampling- for-Granulation. Two (2) independent and representative samples, approximately log each, shall be obtained for this test. The lot shall be rejected if either sample fails to comply with the requirements given in 3.5 when tested in accordance with 4.6.9. 45.
44、1.4 Classification.of.Defects. The classification of defects shall be as given in Table VI: TABLE-VI-Classification-of Defects InspectionJRequirements Boron (see 3.1.4) Physical Properties (see Tables III C IV Ballistic Properties (see Table IV) Granulation (see Table. V) Dimensions (see 3.2) De.f e
45、ct - Classif cation Major Defect Major Defect Major Defect Major Defect 1 Majot Defect 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-46994B a 4.5.2 Inspection equipment. For the performance of all tests and examinations specified in 4.6, c
46、ommercial inspection equipment should be employed. The contractor shall have avail- able, and utilize correctly, this equipment and is charged with the responsibility of assuring that proper calibration proce- dures are followed. Government approval of all inspection equipment is required prior to i
47、ts use for acceptance purposes. (See 6.3) . 4.6 Test methods and procedures. “ (See 6.3) The following tests shall be performed on the samples obtained as per 4.5.1, to determine compliance with the requirements given in section 3 of this specification and the applicable drawings. The tests for mois
48、ture and boron content shall be performed on each of the two samples (see 4.5.1.1) using prescribed procedures for replicate determinations given in standard analytical text books or AST“D2905. Also, unless otherwise specified herein, all chemicals shall be reagent grade or ACS grade in accordance with MIL-STD-1218. 4.6.1 Weight. Weigh 15 pellets to the nearest milligram. Obtain the average weight of a pellet by dividing the total weight obtained by 15. Repeat the weighing on 15 different pellets and calculate the average
