1、Designation: F68 10F68 16Standard Specification forOxygen-Free Copper in Wrought Forms for ElectronDevices1This standard is issued under the fixed designation F68; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last re
2、vision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification establishes the requirements for wrought and fabricated shapes made from Copper UNS2 No. C10100,conforming to
3、 the chemical requirements of Specification B170, Grade 1, and suitable for use in electron devices.1.2 The requirements of this specification are in addition to those prescribed in the following product specifications appropriateto the material being ordered: B1, B2, B3, B75B75/B75M, B75M, B152/B15
4、2M, B170, B187/B187M, B188, B272, and B372.In case of conflict, however, this specification shall take precedence.1.3 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 a
5、nd are not considered standard.1.3.1 Exceptiongrain sizes are in metric units and are standard.1.4 The following safety hazard caveat applies to sections 17.4, 17.5 and 18.7 of this specification: This standard does notpurport to address all of the safety concerns, if any, associated with its use. I
6、t is the responsibility of the user of this standard toestablish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B1 Specification for Hard-Drawn Copper WireB2 Specification for Medium-Hard-Drawn
7、 Copper WireB3 Specification for Soft or Annealed Copper WireB75B75/B75M Specification for Seamless Copper TubeB75M Specification for Seamless Copper Tube (Metric)B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled BarB170 Specification for Oxygen-Free Electrolytic CopperRefinery Sha
8、pesB187/B187M Specification for Copper, Bus Bar, Rod, and Shapes and General Purpose Rod, Bar, and ShapesB188 Specification for Seamless Copper Bus Pipe and TubeB193 Test Method for Resistivity of Electrical Conductor MaterialsB272 Specification for Copper Flat Products with Finished (Rolled or Draw
9、n) Edges (Flat Wire and Strip)B372 Specification for Seamless Copper and Copper-Alloy Rectangular Waveguide TubeB577 Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in CopperB846 Terminology for Copper and Copper AlloysE29 Practice for Using Significant Digits in
10、Test Data to Determine Conformance with SpecificationsE112 Test Methods for Determining Average Grain SizeE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)1 This specification is under the jurisdiction ofASTM Committee B05 on Copper and CopperAlloys and is the direc
11、t responsibility of Subcommittee B05.02 on Rod, Bar,Wire, Shapes and Forgings.Current edition approved April 1, 2010Oct. 1, 2016. Published May 2010November 2016. Originally approved in 1966. Last previous edition approved in 20092010 asF68 05F68 10. 1. DOI: 10.1520/F0068-10.10.1520/F0068-16.2 The U
12、NS System for copper and copper alloys (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition ofa prefix “C” and a suffix “00”.“00.” The suffix can be used to accommodate composition variations of the base alloy.3 For referencedASTM standards
13、, 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 website.This document is not an ASTM standard and is intended only to provide the user of an ASTM s
14、tandard 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 prior editions as appropriate. In all cases only the current versionof the standard as published by
15、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 19428-2959. United States12.2 ASTM Adjunct:Comparison Chart43. Terminology3.1 For definitions of ter
16、ms related to this product, refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 extrusion pipe, na lamination resulting from the flow of the oxide surface of a billet into the article being extruded andusually confined to the trailing-end portion of the extruded produc
17、t.3.2.1 rms, nroot-mean-square, a statistical measure of surface roughness usually determined by means of a profilometer.4. Ordering Information4.1 Orders for the product shall include the following information: Include the following specified choices when placing ordersfor product under this specif
18、ication, as appropriate:4.1.1 TheASTM designation and year of issue of both Specification F68 and the basic product specification involved,4.1.2 Shape of product, Temper,4.1.3 Size, Dimensions and form,4.1.4 How furnished: straight lengths of coils,4.1.5 Quantity: Total estimated weight or length or
19、 number of pieces, or both, for each size and shape, pieces of each size,4.1.6 The Specification F68 Class of material,4.1.7 Intended application (for example, wave guide),4.1.7 Temper,4.1.8 Heat identification or traceability details,4.1.9 Certification,4.2 The following options are available: avai
20、lable but may not be included unless specified at the time of placing the order whenrequired:4.2.1 Heat identification or traceability details,4.2.2 Certification,4.2.3 Mill test report,4.2.4 Special packaging,4.2.5 Special marking,4.2.6 If special temper requirements for sheet and strip for gasket
21、applications are required.5. Materials and Manufacture5.1 MaterialThe material shall be oxygen-free electronic copper which conforms to the requirements of Specification B170,Grade 1.5.2 ManufactureThe manufacturing process shall conform to the requirements of this specification and to the basic pro
22、ductspecification to which the product was ordered.6. Chemical Composition6.1 The cast refinery shape shall conform to the requirements specified in Specification B170, Grade 1, Table 1.6.1.1 Copper shall be taken as the difference between the sum of results for Grade 1 specified elements in Table 1
23、 and 100 %.6.2 These composition limits do not preclude the possible presence of other unnamed elements. Limits may be established andanalysis required for elements not specified in Table 1 of B170 by agreement between the manufacturer and the purchaser.7. Temper7.1 The temper of the wrought or fabr
24、icated product supplied shall conform to the requirements of the basic productspecification to which it was ordered.8. Physical Properties8.1 Electrical ResistivityThe maximum mass resistivity shall be 0.15176 ohms g/m2 (conductivity (conductivity 101.0 %minimum, International Annealed Copper Standa
25、rd (IACS) at 20C when tested in the annealed condition.8.2 ScalingWhen agreed upon between customer and supplier, the test specimens of oxygen-free copper shall showsubstantial surface oxide adherence when subjected to test as described in 18.7.4 Available from ASTM International Headquarters. Order
26、 Adjunct No. ADJF0068. Original adjunct produced in 1966.F68 162NOTE 1The purpose of this test is to distinguish between oxygen-free copper and deoxidized copper. Deoxidized copper will not retain the surfaceoxide in this test.9. Mechanical Properties9.1 All products shall conform to the mechanical
27、property requirements of the basic product specification to which the item wasordered, with the following exception:9.1.1 Sheet and strip with a thickness of 0.125 in. or less and intended for gaskets or for deep drawing shall conform to therequirements prescribed in Table 1, and when so specified 4
28、.2.44.2.6 of Ordering Information.10. Hydrogen Embrittlement (Reverse Bend Test Method)10.1 Specimens shall withstand a minimum of ten reverse bends without breaking when prepared in accordance with B577 TestMethod D. Evidence of blisters, upon visual examination, shall be cause for rejection.NOTE 2
29、Fractured areas of the bent samples should show some reduction in area and have a distorted, smeared surface. The ideal break will havethe appearance of a cup and cone tensile failure.11. General Examination11.1 When examined the samples shall have:11.1.1 A relatively uniform surface free of irregul
30、ar rough spots sometimes termed open grains,11.1.2 Edges free of seams, laps and cracks,11.1.3 Cross sections free of breaks, inclusions or extrusion pipe.12. Special Examinations12.1 Special Macro Examination:Special Macro Examination:12.1.1 The samples shall show no subsurface defects in excess of
31、 the following limits:12.1.1.1 Tubular Products:Tubular Products:(1) Tubes for Exhaust (Pinch-off) Purposes:(1) Tubes for Exhaust (Pinch-off) Purposes:(a) For wall thickness over 0.1 in. (2.5 mm), no defects on the external surface deeper than 0.005 in. (0.13 mm).(b) For wall thicknesses up to 0.1 (
32、2.5 mm) inclusive, no defects on the external surface deeper than 5 % of the wall thickness.(c) No significant defects on the inside surface when examined with fiber optics or a boroscope.(2) WaveguidesNo defects on the external surface deeper than 0.005 in. (0.13 mm) or 5 % of the wall thickness, w
33、hicheveris smaller. No significant defects on the inside surface when examined with fiber optics or a boroscope.(3) Tube for Other ApplicationsNo defects on either the internal or external surfaces deeper than 0.020 in. (0.51 mm) or 5 %of the wall thickness, whichever is the smaller.(a) For wall thi
34、ckness over 0.1 in. (2.5 mm), no defects on the external surface deeper than 0.005 in. (0.13 mm).(b) For wall thicknesses up to 0.1 (2.5 mm) inclusive, no defects on the external surface deeper than 5 % of the wall thickness.(c) No significant defects on the inside surface when examined with fiber o
35、ptics or a boroscope.(2) WaveguidesNo defects on the external surface deeper than 0.005 in. (0.13 mm) or 5 % of the wall thickness, whicheveris smaller. No significant defects on the inside surface when examined with fiber optics or a boroscope.(3) Tube for Other ApplicationsNo defects on either the
36、 internal or external surfaces deeper than 0.020 in. (0.51 mm) or 5 %of the wall thickness, whichever is the smaller.12.1.1.2 Bar and Plate ProductsNo defects deeper than 0.06 in. (1.6 mm) or 5 % of the thickness, whichever is the smaller.12.1.1.3 Sheet, Strip and Flat Wire ProductsNo defects deeper
37、 than 0.005 in. (0.13 mm) or 5 % of the thickness, whicheveris smaller.12.1.1.4 Rod and Wire Products:Rod and Wire Products:(1) Rod and Wire less than 0.19 in. (4.8 mm) in DiameterNo defects deeper than 0.005 in. (0.13 mm) or 5 % of the diameter,whichever is smaller.(1) Rod and Wire less than 0.19 i
38、n. (4.8 mm) in DiameterNo defects deeper than 0.005 in. (0.13 mm) or 5 % of the diameter,whichever is smaller.TABLE 1 Grain SizeThicknessAverage GrainSize,max, mmHardnessHRFA maxLess than 0.040 in. (1.0 mm) 0.035 750.040 to 0.125 in. (1.0 to 3.2 mm) 0.050 75A For information only.F68 163(2) Rod and
39、Wire 0.19 in. (4.8 mm) and Over in DiameterNo defects deeper than 0.06 in. (1.6 mm) or 5 % of the diameter,whichever is smaller.(2) Rod and Wire 0.19 in. (4.8 mm) and Over in DiameterNo defects deeper than 0.06 in. (1.6 mm) or 5 % of the diameter,whichever is smaller.12.2 Special Microscopical Exami
40、nation:Special Microscopical Examination:12.2.1 Samples shall be classified by comparison to Plate 1, which is available from ASTM International Headquarters as anadjunct (see 2.2).12.2.1.1 Product whose samples have an appearance in conforming to either Class 1 or Class 2 shall be considered accept
41、able.12.2.1.2 Subsurface microporosity similar to those typical of Class 3, 4 or 5 as illustrated in Plate 1, are permissible in Class1 and 2 material provided the microporosity does not appear below the metal surface at depths exceeding the following:(1) Tubular Products:(1) Tubular Products:(a) Tu
42、bes for Exhaust Purposes and WaveguidesNo indications at any depth below the surface.(b) Tubes for Other ApplicationsMicroporosity permissible to depths of 0.020 in. (0.51 mm) or 5 % of the tube wall,whichever is smaller.(2) Bar and PlateMicroporosity permissible to depths of 0.06 in. (1.5 mm) or 5
43、% of the thickness, whichever is smaller.(3) Sheet, Strip and Flat WireMicroporosity permissible to depths of 0.010 in. (0.25 mm) or 5 % of the thickness, whicheveris smaller.(4) Rod and Wire Products:(a) Rod and Wire less than 0.19 in. (4.8 mm) in DiameterMicroporosity permissible to depths of 0.01
44、0 in. (0.25 mm) or5 % of the diameter or thickness, whichever is smaller.(b) Rod and Wire 0.19 in. (4.8 mm) and Over in DiameterMicroporosity permissible to depths of 0.06 in. (1.5 mm) or 5 %of the diameter or thickness, whichever is the smaller.(a) Tubes for Exhaust Purposes and WaveguidesNo indica
45、tions at any depth below the surface.(b) Tubes for Other Applications Microporosity permissible to depths of 0.020 in. (0.51 mm) or 5 % of the tube wall,whichever is smaller.(2) Bar and PlateMicroporosity permissible to depths of 0.06 in. (1.5 mm) or 5 % of the thickness, whichever is smaller.(3) Sh
46、eet, Strip and Flat WireMicroporosity permissible to depths of 0.010 in. (0.25 mm) or 5 % of the thickness, whicheveris smaller.(4) Rod and Wire Products:(a) Rod and Wire less than 0.19 in. (4.8 mm) in DiameterMicroporosity permissible to depths of 0.010 in. (0.25 mm) or5 % of the diameter or thickn
47、ess, whichever is smaller.(b) Rod and Wire 0.19 in. (4.8 mm) and Over in DiameterMicroporosity permissible to depths of 0.06 in. (1.5 mm) or 5 %of the diameter or thickness, whichever is the smaller.12.2.1.3 Product whose samples have an appearance corresponding to Class 3, 4 or 5 and not in conform
48、ance with 12.2.1.2,shall be acceptable only by agreement between the manufacturer or supplier and the purchaser.13. Dimensions, Mass and Permissible Variations13.1 The dimensional tolerances for the product described by this specification shall be as prescribed in the basic productspecification to w
49、hich it was ordered.14. Workmanship, Finish and Appearance14.1 The product shall be prepared and handled in such a manner as to be substantially free from surface oxide and the presenceof foreign material such as metal chips, dirt and grease.15. Sampling15.1 The sampling practice shall be as prescribed in the basic product specification to which it was ordered.15.1.1 The number of sample pieces to be selected, however, shall be twice the number prescribed in the basic productspecification.16. Number of Tests and Retests16.1 TestsThe number of
