1、Designation: F680 80 (Reapproved 2012)F680 17Standard Test Methods forNails1This standard is issued under the fixed designation F680; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision.Anumber in parentheses
2、indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 These test methods cover procedures for the testing of nails. The test or tests selected, and the requirements for compliance,will be as specified in th
3、e applicable product standard. Performance tests for nail withdrawal and lateral load capability are notincluded as they are covered by Test Methods D1761.1.2 The tests described are as follows:SectionDimensional tests 5Tension test 6Conventional bend test 7Impact bend test 8Rockwell hardness test 9
4、Coating weight test 10Coating adherence test for zinc-coated nails 111.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.4 This stand
5、ard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.5 This international standard
6、 was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenc
7、ed Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy CoatingsA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA428/A428M Test Method for Weight Mass of Coating on Aluminum-Coated Iron or Steel Arti
8、clesD1761 Test Methods for Mechanical Fasteners in WoodE18 Test Methods for Rockwell Hardness of Metallic MaterialsF547 Terminology of Nails for Use with Wood and Wood-Base MaterialsF592 Terminology of Collated and Cohered Fasteners and Their Application Tools (Withdrawn 2017)33. Terminology3.1 Defi
9、nitionsFor definitions of terms used in this test method, refer to Terminology F547 and F592.4. Significance and Use4.1 When specified, the tests selected for application shall be performed to assure conformance with requirements stipulated inthe product specification.1 These test methods are under
10、the jurisdiction of ASTM Committee F16 on Fasteners and are the direct responsibilities of Subcommittee F16.05 on Driven and OtherFasteners.Current edition approved Dec. 1, 2012June 1, 2017. Published January 2013June 2017. Originally approved in 1980. Last previous edition approved in 20072012 asF6
11、80-80(2007).F680-80(2012). DOI: 10.1520/F0680-80R12.10.1520/F0680-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM
12、website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult p
13、rior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
14、9428-2959. United States15. Dimensional Tests5.1 Dimensions to be evaluated include, but shall not be limited to length, stock diameter, diameter or major dimensions of head,straightness, head concentricity to shank, and length of point. For mechanically deformed nails, angle, depth, and configurati
15、onof deformations shall be measured as specified. Other dimensional characteristics shall be measured when required. Any suitablemeasuring means may be applied.6. Tension Test6.1 Nails are not subject to tension testing. However, wire used to make the nails may be tested as required by prior agreeme
16、ntor to affect mill product control. The testing of wire is covered in the general section of Test Methods A370 and Supplement IV,Round Wire Products.7. Conventional Bend Test7.1 This test is used as a means of testing the ductility of certain types of nails or of the wires used in the manufacture o
17、f nails.The angle of bend and the mandrel diameter will be specified in the product specification. The cold bending shall be performedby any hand or power device that will deform the sample closely about a mandrel of specified diameter through the required anglewithout causing damage to the nail sur
18、face. The sample shall be considered to have failed if fracture occurs prior to attainmentof the required minimum bend angle. Unless otherwise specified, the conventional bend test shall not be applied to annularlythreaded nails or to the region of a nail exhibiting gripper marks.8. Impact Bend Test
19、8.1 The impact test is primarily applicable to the testing of pallet nails to assess their suitability for that application. The testingdevice is shown in Fig. 1 and its operation is described in Annex A1. For any given diameter, the data from this test can becorrelated with Rockwell hardness used t
20、o specify the mechanical properties of the nail. The impact bend test is intended as aconvenient test that may be used in manufacturing and consumer quality monitoring of mechanical properties. However, in the caseof dispute, the Rockwell hardness test, supplemented by the conventional bend test, wi
21、ll be considered the governing test.9. Rockwell Hardness Test9.1 This test is used to measure the hardness of heat-treated nails. Prepare flat surfaces by grinding or filing. Take care not toalter the tempered hardness of the nail during preparation of the flats. The width of the prepared flat shall
22、 be sufficient to preventedge bulge adjacent to each hardness impression. The thickness at the test section shall be sufficient to avoid a bulge or other visiblemarkings on the surface opposite to the impression. Hardness can be determined using a shank having prepared parallel surfaces.Determine th
23、e hardness in accordance with Test Methods E18. Usually three readings are made on a nail and these readings areaveraged for the final result.9.2 An alternate method for determining Rockwell hardness is to cut the nail off about 12 in. (13 mm) from the head. Grind thetop of the head to remove scale
24、and obtain a flat surface. Grind the transversely cut end flat, using proper precautions not to alterthe tempered hardness of the nail. Place the sample head down on the anvil of the hardness testing machine and determine thehardness on the transverse section.10. Coating Weight Test10.1 This test de
25、als with zinc, aluminum, and copper-clad coatings only and does not deal with other metallic coatings such ascadmium.10.2 Cut the heads and points from samples of zinc-coated or aluminum-coated nails selected for testing. Take a sufficientnumber of such specimens to provide a total length over 12 in
26、. (300 mm), preferably about 24 in. (600 mm). Since the densityof the steel is known (0.2836 lb/in.3 (0.1276 kg/m3), it is not necessary to use a specific total length of specimens.10.3 Determine the weight of zinc coating in accordance with Test Method A90/A90M.10.4 Determine the weight of aluminum
27、 coating in accordance with Test Method A428/A428M.10.5 Determine the thickness of coating of copper-clad nails by one of the following three methods:10.5.1 Accurately measuring the diameter of the wire before and after removing the cladding by any suitable means.10.5.2 Cutting off the wire, grindin
28、g one end smooth, etching the exposed cross section to differentiate between core andcladding, and measuring under suitable magnification.10.5.3 Using electrical indicating instruments.10.6 Calculate the weight of the copper cladding from the thickness as measured above or determine the weight of th
29、e claddingby chemically stripping the copper and accurately weighing the wire sample before and after stripping.11. Coating Adherence Test for Zinc-Coated Nails11.1 Determine the adherence of the zinc coating to the surface of the base metal by cutting or prying with the point of a stoutknife, appli
30、ed with considerable pressure in a manner tending to remove a portion of the coating. The adherence shall be consideredF680 172inadequate if the coating flakes off in the form of a layer or skin so as to expose the base metal in advance of the knife point. Testingcarried out at edges or corners (poi
31、nts of lowest coating adherence) shall not be used to determine adherence of coating. Likewise,removal of small particles of the coating by paring or whittling shall not be used to determine failure.12. Precision and Bias12.1 The precision and bias of these tests have not been determined at this tim
32、e.ANNEX(Mandatory Information)A1. OPERATION OF THE IMPACT BEND TESTER (FIG. NO. 1) NO. 1)A1.1 ScopeThe test is applicable to nails with shank diameters of 0.106 in. (2.7 mm) to 0.135 in. (3.4 mm) and lengths of 112in. (38 mm) to 3 in. (76 mm) and with or without deformations.A1.2 Hold the nail to be
33、 tested in a chuck in such a way that it cantilevers 1532 in. (12 mm) at an angle of 80 to the vertical. Hitits head after the free-fall drop of a 3.50-lb (1.58-kg) weight from a 15716 in. (392 mm) height, thereby applying 54.0 in.lbf (6.1-Jpotential or 4.52-J kinetic) energy to the head of the incl
34、ined nail. As a result of this impacting, soft nails are bent readily withoutNOTE 1This device is available from The National Wooden Pallet and Container Assn., 1625 Massachusetts Ave., Washington, DC 20036FIG. 1 A Typical Impact Bend Tester for the Impact Bend Testing of NailsF680 173breaking and n
35、on-ductile nails fail abruptly partially or completely while being bent only a few degrees. The test includes recordingthe bend angle of the tested nail as well as the number and type of failure, if any.A1.3 The impact bend test device, shown in Fig. 1, shall consist of a 0.750-in. (19.0-mm) diamete
36、r shaft, along which the 3.50-lb(1.58-kg) drop weight slides to hit the head of the nail. A protractor shall be used to measure the angle of the tested nail.A1.4 Measure the dimensions of the nails prior to testing. Replace chuck inserts with worn edges with new ones. Position thespecimen properly b
37、etween the chuck inserts in such a way that the specimen protrudes 1532 in. (12 mm) from the inserts. Tightenthe chuck securely, to prevent the displacement of the nail during application of the impact load, and release the drop weight.Record the type of failure, if any, and the bend angle for each
38、nail and determine the average bend angle for the nails tested.SUMMARY OF CHANGESCommittee F16 has identified the location of selected changes to this standard since the last issue(F680-80(2012) that may impact the use of this standard.(1) 2.1 and 3.1 were revised.ASTM International takes no positio
39、n 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, and the riskof infringement of such rights, are entirely their own responsibility.
40、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 revision of this standard or for additional standardsand should be addressed to ASTM In
41、ternational 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 shouldmake your views known to the ASTM Committee on Standards, at the address show
42、n 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-
43、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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ The last approved version of this historical standard is referenced on www.astm.org.F680 174
