1、MIL-1-81970 (AS) 5 April1974 MILITARY SPECIFICATION IGNITION COMPOUND This specification has been approved by the Naval Air Systems Command, Department of the Navy. 1. SCOPE 1.1 Scope. This purchase description covers the minimum arequirements for thre types of ignition compounds composed of magnesi
2、um and polytetrafluoroethylene. 1.2 Classification, The ignition compound shall be of the following types and will be referred to herein as “Type“. Configuration Type I Powder II Pellet (Figure 1) III Powder and Wafer (Figure 2) BLE DOCUMENTS 2. APPL 2.1 The following documents-of the issue in effec
3、t on the date of invitation for bids or request for proposal form a part of this document to the extent specified herein. - SPECIFICATIONS Federal L-P-403- Plastic Molding Material, Polytetrafluoro- ethylene . Military MIL-D-3464 s Desiccants, Activated, Bagged Packaging, Use and Static Dehumidifica
4、tion. I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I- 81970 (AS). SPECIFICATIONS (Contd) Mi lit ar y MIL-P-14067 Powders, Metal, Atomized (For Use In Ammu- nition). STANDARDS Mi lit ary MIL-STD-129 Marking for Shipment and Storage. PUBLICATI
5、ONS Naval Air Systems Command (Code Ident 30003) AD 578 Instructions for Blending Ignition Com- pound, Loading and Assembly of Igniter, Bomb, Mark 273 Mod 1. Naval Ordnance Systems Command (Code Ident 10001) OD 30752 Instructions for Blending Ignition Com- pound and Loading and Assembly of Igniter,
6、Bomb, Mark 273 Mod O. (Copies of specifications, standards, drawings and other publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the con- tracting officer.) 2.2 Other publications. The following docum
7、ent forms a part of this document to the extent specified herein. Unless otherwise indi- cated, the issue in effect on date of invitation for bids or request for proposal shall apply. Code of Federal Regulations 49 CFR 171-179 Transportation. (Application for copies should be addressed to the Superi
8、ntendent of Documents, Government Printing Office, Washington, D.C., 20402.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-81970 (AS) 3. REQUIREMENTS 3.1 First article lot. A first article lot consisting of a minimum of 20 pounds of Type 1
9、and 20 pounds of Type II compound or, as applicable, 40 pounds of Type III, Table IB, of which 20 pounds are of powder configuration and 20 pounds are of wafer configuration shall be manu- factured. posed for all following production lots. selected and tested as specified in Section 4. The compound
10、shall be blended using methods and procedures pro- Samples from this lot shall be 3.1.1 First article approval. The supplier shall obtain written approval of the first article sample by the procuring activity before proceed- ing with regular production. supplier, prior to the approval of the first a
11、rticle sample, shall be at the suppliers risk. Further production of the compound, by the 3.1.2 Retest. At the discretion of the procuring activity during the course of production any or all of the first article lot tests or any portion thereof, shall be repeated under any of the following condi- t
12、ions : (a) The supplier has modified his product such as a change of process, production procedures, or methods, It shall be the responsibility of the supplier to notify the procuring activity prior to the incorpora- tion of any such changes and procure written approval of these changes. The notific
13、ation procedure shall provide quantitative evidence of the effect of such changes on the performance characteristics of the product. an evaluation of the evidence supplied. Requirement for such tests will be based on (b) Where there is evidence that the quality of the product has not been maintained
14、. be in the form of accumulated failure reports of the igniter, of system failures attributable to the igniter, or failure of the igniter to pass any of the tests for quality conformance that may be conducted by or for the procuring activity. This evidence may (c) Any change in design or documentati
15、on by the procuring activity . 3.2 Conformance to documents. The compounds shall conform to the requirements specified herein and to the applicable documents listed in Section 2. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-2770 13 W 77777
16、06 036023i-1 T W MIL-I- $1970 (AS) 3.3 Composition - physical and performance characteristics. 3.3.1 Type I and Type ILI. The Type I or, as applicable Type III compound shall be a completely homogeneous mixture consisting of the in- gredients and percentages as specified in Table I, Table IA or Tabl
17、e IB, when tested in accordance with 4.6.l(b). Table I. Composition of Type I Ingredient Magnesium Polytetra- fluoroethylene (Teflon 5-B or equivalent) Percent by weight by ingredient 60 + 3 - 40 + 3 - Applicable specification MIL-E-14067, Type I 22 - +.8 microns L-P-403, Type II, except that partic
18、le size shall be 275 + 100 microns and apparent density, (grams/ liter), shall be 625 - + 75 Ingredient Table IA. Alternate Composition of Type I Magnes ium Polytetrafluoro- ethylene (Teflon 5-B or equivalent) Percent by weight by ingredient 60 + 3 - 40 + 3 - 4 Applicable specification MIL-P-14067,
19、Type IV, except that granulation and apparent density shall be as .foLlows: Sieve Percentage on 200 mesh 0.0-1,O on 325 mesh 27.0-36.0 thru 325 mesh 63.0-72.0 Apparent density, (gram/ milliliter) shall be 0.410 minimum. L-P-403, Type II, except that particle size shall be 275 + 100 microns and appar
20、ent density, (grams liter), shall be 625 - + 75, , Percent by weight by analysis :3.3.1, 4.6.1) 40 + 3 - Percent by weight by analys is 3.3.1, 4.6.1) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI1 Table IB. Proprietary Alternate Composition of T
21、ype III Ingredient Magnesium Polytetrafluoro- ethylene (Teflon 7 or equivalent) Percent by weight by ingredient 60 + 3 - 40 + 3 - Applicable specification MIL-P-14067, Type IV, except that granulation and apparent density shall be as follows: Sieve Percentage on 200 mesh o .o-1 .o on 325 mesh 27 .O-
22、36. O thru 325 mesh 63.0-72.0 Apparent density, (gram/ milliliter) shall be 0.410 minimum. L-P-403, Type IV -I- 81970 (AS) (see 6.5) Percent by weight by analys is :3.3.1, 4.6.1) - 40 + 4 - 3.3.2 Type II. The Type II compound shall be a completely homogeneous mixture consisting of the ingredients an
23、d percentages as speci- fied in Table II or Table IIA, when tested in accordance with 4.6.l(d). Table II. Composition of Type II Percent ingredient- Ingredient weight by Magnesium : 23.2 - + 2 I Magnesium Polytetra- f luoroethylene (Teflon 5-B or equivalent) Perchloropenta- cyclodecane (Dechlorane 4
24、070 or equivalent) 7 32.6 - + 2 37.2 - + 2 7.0 + 1 - Applicable specification MIL-P-14067, Type I 22 + 8 microns MIL-P-14067, Type I 200 + 25 microns L-P-403, Type II, except that particle size shall be 275 + 100 microns and apparent density , (grams/ liter), shall be 625 + - 75 40 - 70 micron parti
25、cle size - - Percent by weight by ana lys is 3.3.2, 4.6.1) - e- 37.2 - + 2 7.0 + 1 - 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-I-B1770 13 m 7777706 0360236 3 m Table IIA. Alternate Composition of Type II Ingredient Magnesium Magnesium
26、Polytetrafluoro- ethylene (Teflon 5-B or equivalent) Perchloropenta- cy clo decane (Dechlorane 4070 or equivalent) 16 + 2 - 38.5 + 3 - 38 + 3 - 7.5 5 1 Percent by weight by ingredient Applicable specification MIL-P-14067, Type IV, except that granulation and apparent density shall be. as follows: Si
27、eve Percentage on 200 mesh o 0-1 .o on 325 mesh 27.0-36.0 thru 325 mesh 63.0-72.0 Apparent density, (gram/ milliliter) shall be O. 410 minimum. MIL-P-14067, Type I, 200 + 25 microns. - L-P-403, Type II, except that particle size shall be 275 + 100 microns and apparent density, (grams/ liter) , shall
28、 be 625 + 75. 40-70 micron particle size - - Percent by weight by analysis (3.3.2, 4.6.1) - 38 + 4 - 7.5 + 1.5 - 3.3.3 Moisture content. The moisture content of the ignition cornpounds (Types I, II, and III) shall not exceed 0.5 percent, of the total sample weight, when tested in accordance with 4.6
29、.2. 3.3.4 Heat of reaction. The heat of reaction of the ignition compounds shall be not less than 1,350 calories per gram (caL/gm) for Type I, 1,250 cal/gm for Type III (Table IB) and 1,200 cal/gm for Type II, when tested in accordance with 4.6.3. 3.3.5 Burn time, The burn time of the Type II compou
30、nd (pellet) and Type III compound (wafer) shall be a minimum average of 2.5 seconds and 2.2 seconds respectively, when tested in accordance with 4.6.4. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-81970 13 m 7777706 0360237 5 m MIL-1-81970
31、 (AS) 3.3.6 Crush strength. The Type II compound (pellet) shall have an arithmetic mean crush strength of 16,500 + 1,500 grams with an observed standard deviation of not more than 1,500 grams on the observed mean, when tested in accordance with 4.6.5. 3.3.7 Configuration. The Type I1 compound (pelle
32、t) shall meet the requirements specified in Figure 1 while the Type III compound (wafer) shall meet the requirements specified in Figure 2 when tested in accordance with 4.6.6. 3.3.8 Weight. When tested in accordance with 4.6.7, the weight of the Type II compound, after being pressed into pellet for
33、m, shall be 2.2 grams minimum average for the standard compound and 1.9 grams minimum average for the alternate compound. The weight of the Type III (Table IB) alternate compound, after being pressed into wafer form shall be 45.0 grams minimum average. 3.3.9 Density. The density of the Type III (Tab
34、le IB) alternate compound after being pressed into wafer form, shall be 1.40 gm/cc minimum average when tested in accordance with 4.6.8. 3.3.10 Mixing procedures. The mixing procedures of OD 30752/AD 578 are advisory for the mixing of the ignition compounds (see Section 2). CAUTION Personnel engaged
35、 in the mixing, handling and testing of ignition compound should be familiar with the safety provisions of Section 6. 3.4- Workmanship. Workmanship shall be that required to assure conformance with all the requirements of this document and the appli- cable drawings and specifications. evaluated to d
36、etermine acceptability and conformance to the best commercial standards and practices. The workmanship exhibited will be 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance
37、of all inspection requirements as specified herein, Except as otherwise specified in the contract or order, the supplier may utilize his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. Government reserves
38、 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. The 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-I-8
39、L970 13 = 99777Ob 03b0238 7 MIL-I- 81970 (AS) 4.2 - Lot. A lot of Type I, Type II or Type III compound shall be defined as al1 compounds prepared from raw materials from single accepted lots of raw materials and blended or consolidated at one time under homo- geneous Conditions of manufacture. 4.2.1
40、 Sublot. A sublot of Type II or Type III compound shall consist of consolidated compound from a single lot produced in one continuous operation under homogeneous conditions of manufacture by a single powder press. Lot designation;. q inning with the first sublot pro- e nmerically identified by + 4.2
41、.2 duced under the contract, the lotzs 11 master and sublot designations. occur any time that a new batch of any chemical component is employed and the sublot designation numbering shall be started over again. A change in the master lot designation shall I 4.2.3 Lot identification. The lot shall be
42、traceable to the date of certification of raw materials, date of blending, serial number of blending or consolidating machine, date of consolidating and date of accept- ance. 4.3 Classification of tests. Tests shall be classified as follows : (a) First article lot tests (see 4.4). (b) Quality confor
43、mance. (Acceptance tests) (see 4.5). 4. First article lot tests. 4.4.1 Type I or Type III. Random samples shall be selected and tested as specified in Table III or, as applicable, Table IIIA. Failure of any sample to meet the requirements specified herein shall be cause for rejection of the first ar
44、ticle lot. Upon completion of the tests, the re- mainder of the lot shall be destroyed. The maximum number of repetitions of each test as required in Table III or, as applicable, Table IIIA shall be performed if any one of the minimum repetitions fails to meet the test requirements specified herein.
45、 all of the additional-repetitions shall meet the minimum requirements as specified herein. When the maximum number of repetions is used, 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1- $1970 (AS) Table III. First Article Lot Tests for Type
46、I or, as Applicable, Type III (Powder) Test paragraph Requirement paragraph 3.3.3 Sample size and number of repetitions required 25 grams for 5 repetitions min. 10 repetitions max. Test 4.6.2 boisture content 25 grams for 5 repetitions min. 10 repetitions max. Chemical analysis (opt ional) 3.3.1 4.6
47、.1 4.6.3 30 grams for 15 repetitions min. 30 repetitions max. Heat of reaction 3.3.4 Table IIIA. First Article Lot Tests. for Type III (wafer) Requirement paragraph Test paragraph Sample size and number of repetitions required Test 10 wafers for 5 repetitions min. 10 repetitions max. Chemical analys
48、is (optional) 3.3.1 3.3.3 3.3.4 3.3.5 3.3.9 3.3.7 3.3.8 4.6.1 4.6.2 4.6.3 4.6.4 4.6.8 4.6.6 4.6.7 5 wafers for 5 repetitions Moisture content 15 wafers for 15 repetitions min. 30 repetitions max. Heat of reaction 30 wafers for 30 repetitions min. 60 repetitions max. Burn time 15 wafers for 15 repeti
49、tions Density 30 wafer,s for 30 repetitions Configuration Weight 15 wafers for 15 repetitions 4.4.2 Type II. (see 3.1), shall have random samples drawn and tested as specified-in Table IV. Failure of any sample to meet the requirements specified herein shall be cause for rejection of the lot represented. tions of each test as required in Table IV shall be performed if any one of the minimum repetitions fai
