1、.I di MIL-B-60225 9999906 1552603 411 . . I . . . . - * -. -e. I . . .- .“ . +. . “ . V i .;-.2 1 .-.- - .-.- i .a “- -. . -.- -.* .-.“-I- _.-. _f_-. “ MILITARY SPECIFICATION BRAIDED FUZE MATERIAL 1. SCOPE MIL-B-60225 (m) 14 April 1965 . . * 1.1 This specification covers a bimetallic fuze wire braid
2、ed fuze material. 2. APPLICABLE DOCUMENTS 2.1 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: . . . . .-. -.e I._ . “ . - ,. . . -.- . . - . “. . I . .: - . . .-. .-. “ - . . . . I
3、“ . “. . - - .W. .-.-. “.V_. - - . _l-. I I a.- _ .- . _“ - - . ._ - ( . STANDADS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 - Marking for Shipment and Storage (Copies of specifications and standards required by suppliers in connection with specifi
4、c procurement functions should be obtained from the procuring activity or as directed by-the contracting officer.) 3. ReQUIREMENTS 3.1 Material. Fuze material shall be in wire form - 4M8SB (eight strands of 0.004 inch diameter (each strand), hizh resistance pyrofuze wire coaxially braided in an inte
5、rlocking confignation.). . i _.- .4 -. . i 3 774 I 1- I.*. r I FSC 1390 1 - - (A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-B-60225 m 7779706 1552604 358 m -= . .- . ,. 1):. I. I . ;-.:;- . ; . -. . t L i Kg; :;. . . I . . .- I. - . . . .
6、. . c . - .- - - . . .-.- _.I . I .- U. . -. . . . . . 1 I . . . -.-.-.-. - - . -_ *- . I_- . C.- . I . . . . . . . .- . . . . . 1:x- L . Il.lll L . . -.-.- . . . . .-I_ .- . -A-.+. -e. I ._ : . ,- . , F.:; MIL-B-60225 (MU) . . ,. . . . . . _* - . . . . . . . _I._ . - I . . -.- a . -.-.-.- -._ _.-.-
7、_ .-.-.- .- . I- . . F-= . -. . . .- =:;=; _.-_-_ .-.- I_ _._. .- ._ . -.-. -.-L_. _ .-. . . . I - . “ . -. r“ . . p:. . p. . . , . . . -_ -I. _I *.- . *-.- . - I . L . e . . i 2 . , . p - . : . , p . . p . . . . . : ,:.:cy;.;=; .-f? . . -.- . _._.-_-_.-_._I_ .- . / t -: 3 775 - i . 3.2 Construction
8、. Fuze material shall consist or a metallic shell over a metallic core with net round wire configuration as specified in 3.1. 3.2,l Shell. The shell shall conform to the following chemical composition: Ruthenium - 5.0 2 0.5 percent Palladium - Remainder The residual platinum group elements are to be
9、 counted as pslladium. 3.2.2 Core. The core shall be 5056aluminum and shall conform to the following chemical composition by weight. Silicon, percent, niax. Iron, percent, nax. Copper, percent, max. Zinc, percent, max. Manganese y percent Magnesium, percent Chromium, percent Aluminum y percent . 0.3
10、0 0.40 0.10 0.10 0.05 - 0.20 4.5 - 5.6 0.05 - 0.20 Rema inde r _ Note. composition of the braided wire conforms to the chemical requirements of this specification. The contractor shall furnish a certificate stating that the chemical 3.3 Densitl. The single strand wire from which the braid is fabrica
11、ted shall have the following ratio: milligrams/ZOO millimeters of wire divided by diameter of the wire in mils squared = 0.71 to 0.79*. -, me value of 0.71-to 0.79 is defined as the proportional factor or single strand wire. 3.4 Weinht Der unit lenpth. A foot length of braided fuze material shall we
12、igh 1.46 C 5 milligrams. -3,s Breaking load. be 9.5 pounds minimum. The breaking load of the braided fuze (4M8SB) shall 3.6 Burning rate, The braided fuze material shall have a burning rate of 1300 milliseconds per linear foot at ambient temperature. 3.7 Electrical resistance. B single strand of wir
13、e shall have an equiva- lent electrical resistance fox I.ts diamete consistent with a bulk resistivity of 62 -5 2 obms per circular mil foot at 20C. - 2 . .: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-B -# L 9 y m . . -. _ _. .-.-. j -. . . - .-
14、 . . . . . 1 . i . . . - . - . . . “ -.-.a . MIL-B-60225 (MU) / 3.8 Performance. When tested as indicated in 4.6.7, material shall undergo a linear disintegration into minute discontinuous globules resulting in the release of approximately 320 calories of heat per gram of reacted material. 4. QUALIT
15、Y ASSURANCE PROVISIONS. 4.1 Responsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or a
16、ny commercial laboratory acceptable to 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 insure supplies and services conform to prescribed requirements. 4.2 Special provisions. 4.2.1 Alte
17、rnative inspection. The supplier may utilize any alternative inspectionprocedure which will insure equal or better assurance of quality by submitting a written proposal with justification and obtaining written approval from the Government prior to instituting the procedure. In case of dispute, the p
18、rocedures of this specification will govern. 4.2.2 Obiective evidence. The supplier shall provide objective evidence acceptable to the contracting officer that the requirements of 3.1, 3.8 and section 5 for which specific inspection has not been provided in this specification have been satisfied. 4.
19、3 W. A lot shall consist of the fuze material produced by one manufacturer, at one plant, from the same materials, under essentially the same manufacturing conditions in one unchanged process. However, the ingredients shall be the product of one manufacturer. 4.4 Sampling for examination and tests.
20、Sampling shall be conducted in accordance with MIL-STD-105, level S-4. A five foot sample of braided fuze wire shall be taken from each spool of wire at least three feet from the free end, labeled clearly for identification as to the type of material and the. lot represented. 4.5 Inspection movision
21、s. 4.5.1 For examination and nondestructive tests. Sample wire shall be examined and tested in accorciance with 4.6 and MIL-STD-105. number is zero. The acceptance Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-60225 9999906 1552606 120 M . ,.
22、 . . .:-.: -.-. .-. -.-. _L- I - -. - - .e I . +. .- -.-. :. .:. 7 /. . I:=: . -. _. . r.:.z:=:.:,: r.:. -: :.-: I :. . . b. . . l. .-.- I-. -I . “. c_- . - -.- . .- . _I.“ . . -.- . . -.- I . -.- . :2.:.-:; . . . . “. . -. - .- . I . -_ . i.:z2:;.: i.:-;: : . . . L:“:.-:. . . . . . . F“ - . . . . .
23、 . . . . . . . . . .- . . . -.-. MIL-B -60225 (MU) “._ . - . . - . . - .-.- .-.I_ - -I-.- . -.- . -_-_ .-.- _. _ - _ -.-. “-.- e . -_ ._._ _ .-._ . I. . b - p. . . . . I - . . .“ . . -.-.- .a . -. .“ .-. . . . . “ . . . . . 1 : Ir:.:.: 4.6 Test procedures. 4.6.1 Material. Laboratory tests shall be p
24、erformed to determine the composition of 3.2.1 and 3.2.2 by approved analyticai methods. 4.6.2 Density. Select a convenient length of strand, about 200 milli- meters, measure its length to the nearest millimeter, and weigh accurately. Determine the diameter with a micrometer to nearest 0.0001 inch.
25、Calculate the density using the following formula: w/L Density = D2 where W = weight in milligrams L = length in millimeters D = diameter (mils) .I Make three determinations from different spools and report as an average. 4.6.3 Weight per unit. Test specinens shall be selected at least 3 feet from t
26、he end of a spool. “he braided wire shall be drawn from the spool under low even tension so that no elongation of the wire takes place. Each test specimen shall be cut to a length of one foot. shall be folded upon itself several times and twisted to make a compact bundle. The operators hands shall b
27、e clean and dry. handled with extreme care when actual weighngs are being made. three weighing shall be made. The test specimen The balance shall be At least 4.6.4 Tensile strenath, Tensile strength shall be determined using standard measuring equipment of a pendulurn_typet.ensile machine reading to
28、 an accuracy of at least 5 grams and capable of applying force at a uniform rate of 12 inches per minute. Make five determinations from different spools or one determination from each spool if sample size is less than five. Report results as an average. 4.6.5 Burning rate. From each lot, a test samp
29、le of wire approximately 12 inch long shall be taken. device capable of holding a ten (10) inch length of the specimen horizontally. an electrical contact at each end of the 10 inch specimen, and a start-stop chronograph for timing the burning rate. At ambient temperature, the burning rate of the sa
30、mples tested shall be 1 second plus or minus 5 percent when measured at one atmosphere of air pressure at 70F. Use a test fixture consisting of a clamping 4.6.6 Electrical resistance. Eleccrical resistance shall be determined by means of 8 Wheatstone bridge. average value determined from not less th
31、an five measurements on one-foot lengths of braided wire selected from the sample. Resistance shall be reported as the &;i, t .:. . - *- , g.?; - . . i.: . -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- w . . . . . lIL-B-60225 = 9999906 1552607
32、Ob7 I - -. . . .+ . . . . . _ ._. _ .-_ ._._ ._ -_._-. y .-. . . . . . . . . _- . - . . P“ .- “ . .- . . . “ . .-.I_ .“ . . . .“. . . - . . . . - . . . “. -. .“ . -. I . “._ -.1_1- - “ . - -.- - _I.-. , - . 3. I I . . . . . . . . . . “ . . . . .I . “ .- I . . . .-. - . -. . I“ -. “ “ . .“.“ri+l . “.
33、 . . .I“ -.-. . “ . “.“I. . “ . .- .-_.-. . . . - “.I . .- . . . _.“ .“ 1 . . . “ .- I . - .-. -11. “ 1 .-. . . . . I . I . . . +. . . . . - . . . i . . - . “ MIL-B-60225 (MU) . . . . . . . . 4.6.7 Performance. performance shall.be determined using a calorimeter Five determinations shall be made fro
34、m specimen taken from the bomb. sample. Report results as an average. 5. PREPARATION FOR DELIVERY 5.1 Packaninp. 5.1.1 Level C. Unless otherwise specified, the wire shall be furnished wound upon a spool. The quantity of wire per spool shall be in accordance with standard comercial practice. 5.2 Pacl
35、cinq. 5.2.1 Level C. Spools shall be.packed in containers in such a manner as to ineure carrier acceptance and safe delivery to the point of destination. 5.3 Markinq. Each spool, whether packed in a container, bunbled, or - shipped, shall carry an identification tag or label on which is clearly stam
36、ped, or -indelibly printed, the date of manufacture, dimension, customr - order numbe,.quantity of feet, material designation, and bar number or numbers. 5.3.1 In addition to any special aarking required by the contract or purchase order, unit pac!iages and shipping containers shall be marked in acc
37、ordance with MIL-STD-129. -_ . 6. NOTES 6.1 Intended use. This material is intended to be used as a fuze wire which will actuate when externally heated at: a rapid xate. will perforin in any atmosphere. The material 6.2 Orderin.- data. Procurement documents should specify the following: (a) (b) Quan
38、tity 02 material, (c) Place of inspection Title, numbe, and date of this specification. 6.3 Al1 wire destroyed or consumed in conducting the tests required by this specification should be in addition to the quantities of wire ordered ancl the cost thereof should be included in the contract ar order. Custodian: Preparing activity : Army - Mu Army - MU Project No. 1390-A433 Review interest: . _ (1 i., Army -Mi If Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
