1、MIL-R-17143D!41L-R-17343C30 April 1963(See 6.6)MILITARY SPECIFICATIONThis specification is mandatoryment of Defmn8a.1. SCOPE1.1 m. This specificationpose us2. APPLZCASLE UOCUMENTS2.1 ihe followng documents ofrequest for proposal, fom a part ofSPECIFICATIONSFEDEFUJROPE, NYLONfor use”by all Department
2、s and A90ncies of the Depart-covers the requirements of nylon rope for general pur-the issue in effect on date of invitation for bids orthe specification to the extent specified herein.UU-T-S1 - Tags, Shipping and Stock.CCC-T-191 - Textile Test Methods.MILITARYMIL4.2.5.3.2.24.2 .5.44.2.5.5.14.2.5.S.
3、24.2.5.626004.2.5.7467A,?2.5.8per individ. Reeultsunit of product reported se:Pass or fail1 Pass or fail3 Average or 3 deter.to nearest 1/16inch IL Reported to nearest0.1 ft. for ropes5 inches or less incircumference endto the neare3t 0.01ft.for ropes overS in. in circum-ference.33993332nearest 10 l
4、bs. cal-culated to neareet0.1 percentlAver. of 9 deter. tonearest 1 3b.hrer. of 9 deter. toneareet 1 lb. cal-culated nearest 0.1percent.kver. of 3 deter. tonearest 0.1 percentIAver. of 3 deter.to nearest 1.0 lb.verage of 3 deter.to nearest 1.0 lb.verage of 2 deter.to nearest 0.1 per-centFass or fail
5、rass or fail1tem or fail-:/ Te5tS to determine Complian= with Specification require-nts including quantity of delivemay be under prevailing atmospheric conditions except in settlement of dispute in whichcase the tests shall be made upon material which has reached equilibrium under etandardconditions
6、 aa secified in CCC-T-191./Test reports showing conformance to this specification shall be available for each lot ofrope. Reports shall contain actual test, examination or other verifiable quality da/ The time of exposure shall be 40 standard fading hours.6Provided by IHSNot for ResaleNo reproductio
7、n or networking permitted without license from IHS-,-,-241L-R-1734304.2.5.1 Determination circumference. The circumference shall be measured a71t thebeginning of the breaking strength test with the specimen under the load P” specified intable II. A hard fiber shall be passed snugly around the rope a
8、nd cut where it overlaps.The cut len shall be straightened and measured to the nearest l/16 inch. This determina-tion shall be repeated at least three times in different positions not less than two turnsof rope apart. The average of these determinations shalA be the circumference of the ropa.4.2.s.2
9、 -termination of len th er ound. A minimum of 20 feet of rope shall benmamured to nearest /4 inch%n&h%_t%hin plus or .iS 0.5 Percan- of its totalweight. The feet per pound shall be calculated using the following a71quatim:Feet per pound = L x (1 + e/100)wWhere:L . Meaaured length of specimen (feet)w
10、 . aaured weight of specimen (pOUndS)e - percent a71longation at load P (see table II, deteined a71s 8Peci-fiad in 4.2.5.4)4.2.5.3 Determination breeking strength.4.2.5.3.1 Initial. Tha breaking strength shall be detemined in accordance withmethod 4106 of Cl except aa modified herein. Lengths for th
11、e brezdcingstrength shallbe taken from each sample and spliced at each end with at least four full tucks. Shouldsplice slippage be notad during the test, six fuil tucks shall be used in each splice. Theinside Length of each eye) measured with the sides of the eye in contact shall be not lessthan 12
12、inches. The length between tha inner ends of the splices shall be betwesh 3.and 5feet. Clamps or capstan arrangements may be used in lieu of splices but in case of dispute,spAiceclepscimens shall be used.4.2.5.3.2 Meat . The test specimens shall be heated in a convection air ovenfor 5 days at a =&sr
13、ature of 175” + 2*F. Upon removal from the oven, the specimens shallbe allowed to reach equilibria undc the standard condition specified in Section 4 ofCCC-T-191 before being tested for breaking strength.4.2.5.3.2.1 Spliced ropes. Three test specimens prepared as specified in 4.2.5.3.1shall be eubjt
14、?ctedto tne tast specilied ia 4.2.5-3.2= The breaking strength test shallbe conduct-d aa specified in 4.2.S.3.1. The percent change in strength shall be calculatedbased on the avaraqe initial strength and after heat aging.4.2.5.3.2.2 Alternate method u- lied arns. Select from each strand of the test
15、% kt less than 48 inches. Heat seal tiesample unit one 3-ply yarn, w=ianqth shaends of each selected yarn to insure a71gainst the loss of twiet and remove from the strand.After folding in two a71quaL lengths, each yarn shall be halved by heat sealing at the mid-int. These respective lengths shall th
16、en be separatad into two sets each consisting of9 yarns. One set shall be employed as a control, whila the other shail be subjected to thetest specified in 4.2.5.3.2. The brsaking strength for each set shall be determined ina71ccordance with method 4102 of CCC-T-191 except the elongation shall not b
17、e required. Thepercent change shall be based on the average strength of the control set and the heat aged“set.4.2.5.4 Determination o elon ation. A 20 inch gage, minimum, shall be mazked off onth tensile specimen in the spL&ed condition. The specimen shall be tensioned tothe load “P= specified in ta
18、ble XI for the respective size rope. The elongation under thistension shall be measured for ekch breaking strength specimen averaged to the nearest 0.1percent and recorded as the value “e- for use in determining length per pound (see 4.2.5.2).The a71longation at the breaking point shall be determine
19、d and calculated to percent as speci-fied in method 4206 of CCC-T-191.4.2.5.5 tiardness.4.2.5.5.1 Initital. The length of rope used for the weight determination shall besecurely taped of at each end. A 14 inch marlinespike, equivalent or conforming to typeI of IYIL-!4-L5926,shall be ineerted between
20、 strands until visibla on the opposite “side.The spike shall be inserted at leaet 5 feet from a cut a71nd or 5 feet frcm an area which hasbeen subjected to a previous hardness test. The spike inserted in the rope shall ba placedin a com.preasiontesting machine in such a manner that the force necessa
21、ry to push thespike through the rope will be measured with the rope in a relaxed stata without tension andcompletely free to absorb the force of the penetrating spike. Rate of loading shall be 6inchs +1 Lnch per minute. The load necessary to force the spika to the 1/2 inch diametarmark sKall be meas
22、ured on ropes up to 2-3/4 inch circumference inclusive. The 1 inch dia-meter mark shall be used for larger size ropes.7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.2.5.7 Detet?!unatlonof spliceabillty. A breaking strenyth specmen shall be ?re-pa
23、red ana spliced at each enwth four full tucks. Tt.cspecmen snail then be alioec torest 24 hours. Three of &he tucks shall then be %acked out of tn rope. The pozticns ofthe rope from which the tucks &re removed ehall be examined fox yarn displacement and strandcockles.4.2.5.8 Determination fastness o
24、f -lenqtFK bm-ar=mately 1-1/2rintea matter of the identification marker $2sale water and mineral oil. Three fee=,-o-cfiie=ned as a control, will be ewloyed in this deteination. Immerseone length for two hours in synthetic sea water, composed of 3.0 percant sodium chlorideand 0.5 percent anhydrous ma
25、gnesium chlorlde, whiie the remaining length shall be soaked for2 hours in mineral oil, conforming to Military Symbol 3050 of MIL-!=15016. The fastness ofthe printed matter shall be considered satisfactory when no perceptible change in color orin legibility is noted during a visual comparison of the
26、 exposed specimens with the controlspecimen following removal from the respective environments.5. PREPAWTION FOR DELLVERY(The preparation for dqlivery requirements specified herein a71pply only for directGovernment procurements. For the extent of applicability of the preparation for deliveryrequirem
27、ents or referenced documents listed in section 2, see 6.S.)5.1 Packaging, packing, and marking shall be ea specified in MIL-C-3131. The level ofprotection shall be A, B, or C as wpecified in tie contract or order (ae 6.2).6. NOTES-6.1 Intended use.” The rope covered by this specification is intended
28、 for generalpurpoee uaea where h strenqth or stretch is required a71a in mooring towing and hoistingoperations.6.2 “Ordering data. Procurement documents should specify the following:(a) Title, number, and date of this specification.(b) specific color (shade) if othor than natural (ace 3.101.(c) When
29、 information on identification marker is other than specified (see 3.11).(d) Put-up required (aeo 3.13).(8) Selection of a71pplicable lewls of pnea-ation, packaging and packing (eee5.1).(f) whether test a71pparatua is other than a71pecified (see table VII).(g) That PUrChSSer will accept at original
30、weight, any unit which hu &eonshortened or cut for test 8pecimans, if in coqUiance with this specifica-tion (aae 6.4).(h) That nylon rope shall be purchased on a price-per-pound bamis-net weight.6.3 Standard ale (De artment of onl ).?or accees to etandard samples, andrope ffyeinginstructlona a e pro
31、curngce issuing tSe invitation for bide.Procuring offices ehould note requirements of 3.4 where the prohibition agaanet heat settingof rope may require a waiver when color is required other than natural.moieture wii 6.4 M ustment for hi h moieture content. Material furniehcd containing an excess ofa
32、ccepted y an a71djuatmant an weight to the 5 psrcent moisture baais.6.5 SUb-contxactea material and arta. The preparation for delivery requirements efreferenced documents hated in Se.nk not a71pply when m.terial a71nd parts a71re procuredby the eupplier for incorporation into the equim=nt and lose t
33、heir separate identity whanthe equipment is ehippad.8Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-17343D6.6 CMANGES ?RW PREVIOUS ISSUE. TXE OUTSIDE MARGINS OF THIS =UBUMT NAVE B&EN MARXED4” IND!CATE -cDmoNs, ADbITsoNs, ETc.) PROM TNE PREVIOU
34、S ISSUE NAVE SEENnADE. THIS UAS BEEN 00NE AS A COWWIENC.E ONLY AND THE GOVEIW4EXT ASSUMES NO LIABILITY WHAT-SOEVER FOR ANY INACCURACIES IN THESE NOTATIONS. BIDDER5 AND CONTRACTORS ARE CAVTXONED TOEVALUATE THE REQUIREMENTS OF THIS 00CU.MENTBASED ON I= ENTIM C3NTEXT AS WRITTEN IRRESPECT-IVE OF THE MAR
35、GINAL NOTATIONS AND RELATIONSHIP TO THE LAST PREVIOUS ISSUE.custodians: Preparing a71ctivity:-GL Navy - SHNavy - Ski (Project 4020-0122)fir ?orce - %2Review activities:- GLNavy - Ski,YDAir Force - 82, 85DSA - ISUser a71ctivities:my - MI, MUNavy - UC, 0s, CG9Provided by IHSNot for ResaleNo reproducti
36、on or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDIZATION DOCUMENT IMPROVEMENT PROPOSAL(J%lnnmctims- RpmeSide)CUMSNT NVMUR Z OOCUMENT TITLE1NAME OF SUMITTINQ OROAMiZATION TYPE O? ORGANI-710N iMd o-)nVENOOna75 WRn1 MANUFACTURERhc.ME O 8UBMl=En (kc ?ht, Ml) - OptJau, mnlufwl AtJonE= stRo& CIQ, sum, Zx? C*) . Optlonu E. OAT- OP 8UOMIEE10-N (YYMMDD)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
