DLA MIL-W-8957 A-1966 WIRE STEEL CARBON HIGH STRENGTH《高强度碳素钢线圈》.pdf

1、.- 1. SCOPE: MIL-W-8957A (ASG) 13 MAY 1966 331LITARY SPECIFICATION NIE, STEEL, CARBON, HIGH STRENGTH This specification has been approved by the Department of the Air Force and by the Naval Air- Systems Command. 1.1 Scope.- This specification cover6 a premium quality round wire of high- carbon steel

2、. 1.2 COE osition,- The chemical composition of the wire shall conform to table 3 (s- 2, APPLICABLE DocWmS 2.1 The following documents, of the issue in effeot on date of invitation for bids or request for proposal, form a part of tNe specification to the extent speci- fied herein: SPECIFICATIONS Fed

3、eral uu-P-271 Paper, Wrapping, Waterproofed Kraft 1mX-121 Barrier Material, Greaseproofed, Waterproofed, Flexible I STANDARN Federal Fed. Test Nethod Std. No. 151 Metals, Test Methods Ydlitary MIIrSTD-163 Steel Ml1 Products Preparation for Shipment and Storage (Copies of specifications, standardrr,

4、drawings, and publications required by suppliers in connection with specific procurernent functions should be obtained from the-procuring activity or as dhcted by the contracting officer,) ad. . s*Ty THIS DOCUMENT CONTAINS “-v- PAGES mmEl Provided by IHSNot for ResaleNo reproduction or networking pe

5、rmitted without license from IHS-,-,-NIL-W-8757A 75 7777706 OLL5277 Lt W- 2.2 Other nubications.- The following documente form a part of this specifi- cation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shell a

6、pply: American Society for Testing and Naterials ASTM A318-56 Tension Testing of Steel Spring Wire (Copies of ASTM publioations may be obtained from the Amerioan Society for Naval Air Engineerinn Center Testing and Materialrs, 1916 Race Street, Philadelphia, Pennsylvania 19103 + ) Drawing Li1711 Spo

7、ol, Towline, Shipping, 500 Pounds Capacity (Copies of NAFX drawings may be obtained from the Aeronautical Materials Laboratory, Naval Air Engineering Center, Philadelphia, Pennsylvania 19112, ) 3. mu1REMENTs 3.1 Chemical composition.- The composition shall conform to the respective limits of table I

8、, the extent indicated in the check analysis column, except that elements in any heat shall not Vary both above and below the sriecified range. Individual determinations may vary fromthe specified range to TABm I. Chemical composition Element Carbon Manganese Silicon Phosphorous Sulfur Chromium Moly

9、bdenum Copper Nickel Nitrogen Carbon- nitrogen I Check analysis Range (percent) I tolerance (mrc ent 0.85 Oe90 ;to* 02 *o2 M.02 W.005 W.005 - 3.2 Dimensions - diametralto1erances.- The permissible variation from the nominal diameter shall be A3 percent of the diameter, roundness shall be half the di

10、ametral tolerance. The tolerance on out-of- . 3.3 Mechanical prowrties - torsional, ductility. and tensile.- The torsion, ductility, and tensile breaking strength minimum requirements shall be a8 specified in table II for various wire diameters, when tested as specified in 4r3.3,2r 4.3.3.3, 4.3.4.2,

11、 and 4.3.5.2, respectively. 3.4 - Joints,- Wire rods and wires may be joined by welding, provided such operations are accomplished in the initial stages of processing, and that varia- tione in microstruoture due to welding are eliminated by repeated annealing and drawing operations, 2 c_-_ -. _-. y=

12、. - Ire Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ire diameter Tolerance on roll groove diameter N.050, -0.00 inch. Tolerance on distance between c eri$er the time the dre il be- transferred to the shipping reels. 4,3.3,2 Method (wire over 0,03

13、2-inch diameter 1.- Specirrons %or the torsiort test of wire over 0.032-inch diameter ehall be not.less than 10 inches long. !he erd of the speuhen shalibe clamped in the fixed head of the testing Kachine &d the ILneT end clamped in the movable head, The distance betvreen the clmps in 72:hich the wi

14、re 5s held shrill be not less than R inches, The wire shall be t,i:l.st,ed at a tmlform rate, 5.n onc ciirsction, until failure occurs. The speed of the rr.acl?ir*o shall be such as not to (:e?.UBB undue heating of the wire, and in no case shall the sped exceed 33 rpm for w5rc dimeters 0,125 inch or

15、 less, or 20 rpm fop wires of arger dianeters, CIKOZ shall he applied longitudinally to the wire to keep it from kinking during tl-e t.cat * Sufficient Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r MIL-W-8757A 75 777770b 01i15300 O W ICCL-W-8957A

16、( ASG) 4.3.3.3 Method (wire 0.032-inch diameter and less),- The torsion specimen for this wire shall be not more than 30 inches long. shall be passed around a hook held in the movable head of the testing machine. loose ends shall then be clamped together in the stationary head and the test con- duct

17、ed as specified in 4.3.3.2. The center of this length of wire The 4.3.4 Ductility test. - 4.3.4.1 Samplinp.- All the wire supplied in accordance with this specification shall be tested. 4.3.4.2 Method.- Wire shall be passed through a series of five rolls or sheaves as it is being transferred from ma

18、nufacturing coils or reels to shipping reels. The sheaves shall be of the size and spacing between centers of rotation indicated by table II for the respective wire size. as indicated on figure 1. Breakage of the wire shall be cause for rejection of all lengths of wire less than the minimum individu

19、al lengths specified in table III for the respective wire size. No joining or splicing or retest of shorter lengths will be permitted. The sheaves shall be arranged 4.3.5 Tensile test.- 4.3.5.1 Sampling.- One specimen shall be selected fromthe first, last, and one intermediate shipping reel from eac

20、h manufacturing coil at the time the wire is being transferred to the shipping reels and subsequent to the ductility test of 4.3.4. 4.3.5.2 Method.- Wire specimens shall be tested in accordance with ASTM Method A3i8-56. 4.3.6 Re.iection criteria.- Failure of any specimen or sample to meet the inspec

21、tion and test requirements specified herein shall be cause for rejection of the lot (coil) represented. 5. PREPARATION FOR DELIVERY 5.1 Preservation.- A light grade of preservative oil shall be applied to the wire-surfaces. forming to W-P-271 and a layer of greaseproof material conforming to MIL-B-1

22、21 shall be applied to the barrel of the reel and inner surfaces of the flanges. wire is in place a lyer each of greaseproof and waterproof barrier material shall be applied in a manner to enclose the wire, with the waterproof material on the outside. The barrier materials shall be held in place by

23、wire bands or metal straps, Prior to winding on the reel, a layer of waterproof material con- After the 5.2 Level A, B, and C, packaging and i7acking.- Unless otherwise specified, wire shall be packaged, preserved, and packed for domestic or overseas shipment in accord- ance with MIL-STD-163, except

24、 that unit and intermediate package identification mark- ing shall include the items indicated in 5.3. desired shall be as specified by the procuring activity (see 6.2). Wire shall be of lengths as indicated in table III and shall be wound on shipping reels of dimensions as indicated on Drawing NAEC

25、 D-11711 for Navy procurement. Air Force procurement, the wire shall be wound on reels as specified or agreed on by the procuring activity. The wire shall be evenly wound under a uniform tension of approximately 40 pounds. When winding is complete, the end shall be fastened to the flange of the reel

26、 by means of a Ti“ or IIJIl bolt. The level of packaging and packing 5.2.1 Level A, packaging and packing (applicable to .O45 and .05lwire only).- For t- - - 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6 -E - I Y Y X u) Provided by IHSNot for

27、ResaleNo reproduction or networking permitted without license from IHS-,-,-/ MIL-W-8757A 75 7779906 OLL5302 4 m EIL-W-8957A (ASG) TABLE III. Chipping reel amounts of wire Wire diameter Individual lengths, Total per reel, 28,000, 56,000, 84,000 84jW 051 22,000, 44,000, 66,000 66,000 051 35,000, 70,00

28、0 70,000 (inch) (feet ) approximate (feet) approxjmate a 0.045 5.3 tarkinq.- Shipping reels shall be identified with aluminum marking plates securely attached to the ends of the reels and marked with the following Information: Purchase order or contract number Kanufacturer 1s name Wire diameter and

29、approximate length Lengths individual wires EfILW-8957A In addition, a tag with the above marking information shall be firmly fhed to the outside of the waterproof wrapping paper in such manner that the information will be fully visible on reels stacked end-on-end. 6. NOTES 6.1 intended use.- The wi

30、re is intended for use in aerial target towline and other applications requiring high-strength steel wire. 6.2 Ordering data.- Procurement documents should specify: (a) Title, number, and date of this specification. (b) Wire diameter, lengths of wire, and total amount of wire desired (c) For Air For

31、ce procurement, the type of shipping reel (see 5.2.1)* (d) Applicable levels of packaging and packing (see 5.2). (see 1.2, tables I, II, and III). custodians: Navy - AS Air Force - (ll) Reviewer activities : Navy - Air Force - (11) Preparing activity: Navy - -33 7 r Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-