1、Designation: A407 07 (Reapproved 2013)Standard Specification forSteel Wire, Cold-Drawn, for Coiled-Type Springs1This standard is issued under the fixed designation A407; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers round, cold-drawn, steel springwire having properties and quality intended for the manufac-tu
3、re of the following types of upholstery springs:1.1.1 Type ACoiled (Marshall pack),1.1.2 Type BCoiled and knotted,1.1.3 Type CCoiled and knotted (offset style),1.1.4 Type DCoiled and hooked (single and crosshelicals),1.1.5 Type ECoiled and hooked (short tensionregulartensile strength),1.1.6 Type FCo
4、iled and hooked (short tensionhightensile strength),1.1.7 Type GRegular lacing,1.1.8 Type HAutomatic lacing,1.1.9 Type IZig-zag (U-formed),1.1.10 Type JSquare-formed, and1.1.11 Type KSinuous for furniture spring units.1.2 These types of upholstery springs are used in themanufacture of automotive sea
5、t springs, furniture springs, bedspring units, mattresses, furniture cushions, and automobileseats. This wire is not intended for the manufacture ofmechanical springs.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA700 Practices fo
6、r Packaging, Marking, and Loading Meth-ods for Steel Products for ShipmentE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 AIAG Standard:AIAGB-5 02.00 Primary Metals Identification Tag Applica-tion Standard33. Ordering Information3.1 Orders for ma
7、terial under this specification shouldinclude the following information for each ordered item:3.1.1 Quantity (weight),3.1.2 Name of material (name of specific type required)(Section 1 and Table 1),3.1.3 Diameter (Table 2),3.1.4 Packaging, marking, and loading (Section 12),3.1.5 ASTM designation and
8、date of issue, and3.1.6 Heat (cast) analysis (if desired).NOTE 1A typical ordering description is as follows: 50 000 lb15 000 kg, cold-drawn upholstery spring wire Type B for coiling andknotting, size 0.080 in. 2.0 mm, 1500-lb 700 kg coils on tubularcarriers to ASTM A407 dated.4. Manufacture4.1 The
9、steel shall be made by any of the followingprocesses: open-hearth, basic-oxygen, or electric-furnace.4.2 A sufficient discard shall be made to ensure freedomfrom injurious piping and undue segregation.4.3 The wire shall be cold-drawn to produce the desiredmechanical properties.5. Chemical Compositio
10、n5.1 Upholstery spring wire for coiled-type springs is cus-tomarily produced within the chemical ranges shown below.Chemical composition and processing may vary depending onthe gage of wire and specific use.Carbon, % 0.45 to 0.70AManganese, %, 0.60 to 1.20APhosphorus, max, % 0.040Sulfur, max, % 0.05
11、0AIn any lot in which all the wire is of the same size and type, and submitted forinspection at the same time, the carbon content shall not vary more than 0.20 %,and the manganese content shall not vary more than 0.30 %.5.2 An analysis of each heat (cast) shall be made by theproducer to determine th
12、e percentage of elements specified1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.03 on Steel Rod and Wire.Current edition approved April 1, 2013. Published April 2013. Originallyappro
13、ved in 1957. Last previous edition approved in 2007 as A407 07. DOI:10.1520/A0407-07R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summa
14、ry page onthe ASTM website.3Available from Automotive Industry Action Group (AIAG), 26200 Lahser Rd.,Suite 200, Southfield, MI 48033-7100, www.aiag.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1above. The analysis shall be made
15、from a test sample prefer-ably taken during the pouring of the heat (cast). The chemicalcomposition thus determined shall be reported to the purchaseror his representative upon request.6. Mechanical Properties6.1 Tension Test:6.1.1 RequirementsThe material as represented by tensiontest specimens sha
16、ll conform to the requirements prescribed inTable 1 for the various sizes and specified types.6.1.2 Number of TestsOne test specimen shall be taken foreach ten coils, or fraction thereof, in a lot. Each heat in a givenlot shall be tested.6.1.3 Location of TestsTest specimens shall be taken fromeithe
17、r end of the coil.TABLE 1 Tensile Strength RequirementsADiameter,in. mmWireGageTensile Strength, ksi MPamin maxType A, Marshall Pack0.0481.2 18255 1800 295 20600.0541.4 17250 1760 290 20100.0621.6 16250 1710 290 19500.0721.8 15240 1680 280 19200.0802.0 14230 1650 270 18900.0922.4 13225 1610 265 1830
18、0.1062.8 12220 1560 260 1780Type B, Coiled and Knotted0.0621.6 16235 1550 270 17900.0721.8 15230 1530 265 17700.0802.0 14225 1500 260 17400.0922.4 13215 1460 250 16800.1062.6 12205 1420 235 16400.1203.0 11195 1380 225 16000.1353.5 10190 1350 220 15600.1483.8 9185 1300 215 15300.1624.2 8180 1300 210
19、1500Type C, Coiled and Knotted (Offset Type)0.0721.8 15215 1450 245 16900.0802.0 14210 1430 240 16700.0922.4 13200 1390 230 16100.1062.6 12195 1360 225 1580Type D, Coiled and Hooked (Cross Helicals)0.0481.2 18215 1490 255 17500.0541.4 17210 1440 250 17000.0621.6 16210 1410 250 1650Type E, Coiled and
20、 Hooked (Short Tension, Regular Tensile Strength)0.0802.0 14200 1410 240 16500.0922.4 13200 1360 240 15800.1062.6 12195 1330 235 1550Type F, Coiled and Hooked (Short Tension, High Tensile Strength)0.0802.0 14225 1550 260 17900.0922.4 13220 1520 255 17400.1062.6 12215 1490 250 1710Type G, Regular Lac
21、ing Wire0.0411.0 19235 1640 275 19100.0481.2 18230 1600 270 18600.0541.4 17225 1560 265 18100.0621.6 16225 1520 265 1760Type H, Automatic Lacing WireTABLE 1 ContinuedDiameter,in. mmWireGageTensile Strength, ksi MPamin max0.0411.0 19250 1740 290 20200.0481.2 18245 1700 285 19600.0541.4 17240 1660 280
22、 19100.0621.6 16235 1620 275 1860Type I, Zig-Zag Type Automobile Seat and Back Spring UnitsClass I Class II0.092 2.4 13 220 1520 250 1720 230 1590 260 18000.106 2.6 12 215 1480 245 1690 225 1550 255 17600.120 3.0 11 210 1450 240 1660 215 1480 245 16900.135 3.5 10 205 1410 235 1620 210 1450 240 16600
23、.148 3.8 9 200 1380 230 1590 205 1410 235 16200.162 4.2 8 190 1310 220 1520 200 1380 230 1590Type J, Square-Formed Type Automobile Seat and Back Spring UnitsClass I Class II0.092 2.4 13 215 1480 245 1690 225 1550 255 17600.106 2.6 12 210 1450 240 1660 220 1520 250 17200.120 3.0 11 205 1410 235 1620
24、215 1480 245 16900.135 3.5 10 200 1380 230 1590 210 1450 240 16600.148 3.8 9 190 1310 220 1520 200 1380 230 15900.162 4.2 8 180 1240 210 1450 190 1310 220 1520Type K, Sinuous Type Furniture Spring Units0.092 2.4 13 235 1660 270 18600.106 2.6 12 235 1620 265 18300.120 3.0 11 230 1590 260 18000.135 3.
25、5 10 225 1550 255 17600.148 3.8 9 220 1520 250 17200.162 4.2 8 215 1480 245 16900.177 4.5 7 210 1450 240 16600.192 5.0 6 207 1430 237 1630ATensile strength values for diameters not shown in this table shall conform to thatshown for the next larger diameter (for example, for diameter 0.128 in. 3.25 m
26、mthe value shall be the same as for 0.135 in. 3.42 mm).TABLE 2 Permissible Variations in Wire DiameterNOTE 1For purposes of determining conformance with thisspecification, all specified limits are absolute as defined in Practice E29.Diameter, in. mm Variations, plus andminus, in. mmPermissible Out-o
27、f-Round, in. mmSizes finer than 0.076 2.0 0.001 0.02 0.001 0.02Sizes 0.076 2.0 to 0.162 4.2, incl 0.002 0.05 0.002 0.05Sizes 0.092 2.2 to 0.192 5.2 0.002 0.05 0.002 0.05A407 07 (2013)26.1.4 Test MethodThe tension test shall be made inaccordance with Test Methods and Definitions A370.6.2 Wrap Test:6.
28、2.1 RequirementsThe wire for zig-zag-type and forsquare-formed-type springs for automobile seat and backspring units, except that for coiled-type springs Type A(Marshall pack), shall wrap on itself as an arbor withoutbreakage. The wire for sinuous-type furniture spring units shallwrap on a mandrel t
29、wice the diameter of the wire withoutbreakage. The wire shall wrap on itself as an arbor withoutbreakage.6.2.2 Number of TestsOne test specimen shall be taken foreach ten coils, or fraction thereof, in a lot. Each heat in a givenlot shall be tested.6.2.3 Location of TestsTest specimens shall be take
30、n fromeither end of the coil.6.2.4 Test MethodThe wrap test shall be made in accor-dance with Supplement IV of Test Methods and DefinitionsA370.7. Dimensions and Permissible Variations7.1 The diameter of the wire shall not vary from thatspecified by more than the tolerances specified in Table 2.8. W
31、orkmanship8.1 Surface ConditionThe surface of the wire as receivedshall be smooth and have a uniform finish suitable for coilingor shaping the various types of springs. No serious die marks,scratches, or seams may be present.8.2 The wire shall be properly cast. To test for cast, a fewconvolutions of
32、 wire shall be cut from the coil and allowed tofall on a flat surface. The wire shall lie substantially flat onitself and shall not spring up and show a wavy condition.8.3 Each coil shall be one continuous length of wire,properly coiled. Welds made prior to cold drawing are permit-ted. Weld areas ne
33、ed not meet the mechanical requirements ofthis specification.9. Retests9.1 If any test specimen exhibits obvious defects or showsthe presence of a weld, it may be discarded and anotherspecimen substituted.10. Inspection10.1 The manufacturer shall afford the purchasers inspectorall reasonable facilit
34、ies necessary to satisfy him that thematerial is being produced and furnished in accordance withthis specification. Mill inspection by the purchaser shall notinterfere unnecessarily with the manufacturers operations. Alltests and inspections shall be made at the place of manufacture,unless otherwise
35、 agreed to.11. Rejection and Rehearing11.1 Unless otherwise specified, any rejection based on testsmade in accordance with this specification shall be reported tothe manufacturer within a reasonable length of time.11.2 Failure of any of the test specimens to comply with therequirements of this speci
36、fication shall constitute grounds forrejection of the lot represented by the specimen. The lot may beresubmitted for inspection by testing every coil for the char-acteristic in which the specimen failed and sorting out thedefective coils.11.3 The material must be adequately protected and cor-rectly
37、identified in order that the producer may make properinvestigation.12. Packaging, Marking, and Loading12.1 Packaging of the coils of wire shall be by agreementbetween the producer and the purchaser. This agreement shallinclude coil dimensions and weights.12.2 When specified, the packaging, marking,
38、and loadingshall be in accordance with Practices A700.12.3 Marking shall be by a tag securely attached to each coilof wire and shall show the identity of the producer, size of thewire, type, and ASTM specification designation.12.4 Bar CodingIn addition to the previously-stated iden-tification requir
39、ements, bar coding is acceptable as a supple-mentary identification method. Bar coding should be consistentwith AIAG Standard AIAGB-5 02.00, Primary Metals Identi-fication Tag Application. The bar code may be applied to asubstantially affixed tag.13. Keywords13.1 coiled-type; cold-drawn; sinuous; sp
40、rings; square-formed; upholstery; wire; zig-zagASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights,
41、and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revi
42、sion of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you
43、shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A407 07 (2013)3
