1、Designation: B870 08 (Reapproved 2014)Standard Specification forCopper-Beryllium Alloy Forgings and Extrusions Alloys(UNS Nos. C17500 and C17510)1This standard is issued under the fixed designation B870; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification establishes the requirements forcopper-beryllium alloy forgings a
3、nd extrusions. The followingalloys are specified:Copper AlloyUNS No.Nominal Composition, %Beryllium Cobalt NickelC17500 0.50 2.6C17510 0.40 1.81.2 UnitsThe values stated in inch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI units that ar
4、e provided forinformation only and are not considered standard.1.3 The following safety hazard caveat pertains to Sections10 and 11 of this specification:This standard does not purportto address all of the safety concerns, if any, associated with itsuse. It is the responsibility of the user of this
5、standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B194 Specification for Copper-BerylliumAlloy Plate, Sheet,Strip, and Rolled BarB249/B249M Specification for General Requirem
6、ents forWrought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB441 Specification for Copper-Cobalt-Beryllium, Copper-Nickel-Beryllium, and Copper-Nickel-Lead-BerylliumRod and Bar (UNS Nos. C17500, C17510, and C17465)B601 Classification for Temper Designations for Copper andCopper AlloysWrought
7、 and CastB846 Terminology for Copper and Copper AlloysB950 Guide for Editorial Procedures and Form of ProductSpecifications for Copper and Copper AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE527 Practice for Numberi
8、ng Metals and Alloys in theUnified Numbering System (UNS)E1004 Test Method for Determining Electrical ConductivityUsing the Electromagnetic (Eddy-Current) Method3. General Requirements3.1 The following sections of Specification B249/B249Mform a part of this specification:3.1.1 Material and Manufactu
9、re,3.1.2 Sampling,3.1.3 Number of Tests and Retests,3.1.4 Specimen Preparation,3.1.5 Significance of Numerical Limits,3.1.6 Inspection,3.1.7 Rejection and Rehearing,3.1.8 Certification,3.1.9 Test Reports, and3.1.10 Packaging and Package Marking.4. Terminology4.1 For definitions of terms related to c
10、opper and copperalloys, see Terminology B846.4.2 Definitions of Terms Specific to This Standard:4.2.1 extrusion, na uniform metal shape, long in relationto its cross-sectional dimensions, produced by forcing a suit-ably preheated billet or pre-formed shape through an orifice(die) of the desired cros
11、s section.4.2.2 forging, na metal part worked to a predeterminedshape by one or more such processes as hammering, upsetting,pressing, rolling, and so forth.NOTE 1Forged and extruded shapes in the context of this specificationare generally construed to be large section products; round, oval, halfroun
12、d, geometric custom-ordered cross-sections, and asymmetrical metalshapes. This is to generally differentiate products supplied according tothis document as opposed to forged and extruded “Rod and Bar” inSpecification B441.1This specification is under the jurisdiction ofASTM Committee B05 on Copperan
13、d Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved April 1, 2014. Published May 2014. Originallyapproved in 1996. Last previous edition approved in 2008 as B870 - 08. DOI:10.1520/B0870-08R14.2For referenced ASTM stan
14、dards, 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 Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM Intern
15、ational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Ordering Information5.1 Include the following information when placing ordersfor product under this specification, as applicable:5.1.1 ASTM designation and year of issue,5.1.2 Copper Alloy UNS No. (Sectio
16、n 1),5.1.3 Temper (Section 8) or condition (Section 11),5.1.4 Drawing, when required, and5.1.5 Quantity: number of pieces or pounds.5.2 The following requirements are optional under thisspecification and shall be included in the contract or purchaseorder, when specified.5.2.1 Tension tests (Section
17、10),5.2.2 Special marking or packaging (Specification B249/B249M),5.2.3 Inspection (Specification B249/B249M),5.2.4 Certification (Specification B249/B249M),5.2.5 Mill test report (Specification B249/B249M),5.2.6 Finish (Section 14), and5.2.7 When material is purchased for agencies of the U.S.govern
18、ment, this shall be specified in the contract or purchaseorder, and the material shall conform to the supplementaryrequirements as defined in the current issue of SpecificationB249/B249M.6. Materials and Manufacture6.1 Materials:6.1.1 The material of manufacture should be a cast billetconforming to
19、the chemical composition requirements for thealloy specified in the ordering information and shall be of suchpurity and soundness as to be suitable for processing into theproduct prescribed herein.6.2 Manufacture:6.2.1 The product shall be manufactured by hot working orextrusion, solution heat-treat
20、ing, precipitation hardening, andstraightening as may be necessary to meet the propertiesspecified.7. Chemical Composition7.1 The material shall conform to the chemical compositionin Table 1 for the alloy specified.7.1.1 These composition limits do not preclude the presenceof other elements. Limits
21、may be established and analysisrequired for unnamed elements by agreement between themanufacturer and purchaser.7.1.2 Copper, given as the remainder, is the differencebetween the sum of results of all elements determined and100 %.7.1.3 When all elements listed in Table 1 for the alloyspecified in th
22、e ordering information are determined the sum ofresults shall be 99.5 % minimum.8. Temper8.1 The standard temper designations available under thisspecification and as prescribed in Classification B601 aresolution heat treated TB00 (A) and precipitation heat treatedTF00 (AT).9. Physical Property Requ
23、irements9.1 Electrical ConductivityProduct supplied under thisspecification shall conform to the conductivity requirementsprescribed in Table 2 after precipitation heat-treatment whentested in accordance with Test Method E1004.10. Mechanical Property Requirements10.1 HardnessThe product furnished un
24、der this specifica-tion shall conform to the hardness requirements prescribed inTable 3, when tested in accordance with Test Methods E18.10.2 TensileWhen specified in the contact or purchaseorder, the product furnished shall conform to the tensileproperties in Table 3, when tested in accordance with
25、 TestMethods E8/E8M.11. Heat Treatment11.1 The majority of the product supplied under this speci-fication is in the TF00 (AT) temper. When product is purchasedin the TB00 (A) temper, it should be heat treated to a uniformtemperature in the range from 800 to 900F (454 to 482C) for3 h and then air coo
26、led.NOTE 2Special combination of properties may be obtained by specialheat treatments. These requirements shall be agreed upon by the manu-facturer or supplier and purchaser.12. Dimensions and Permissible Variations12.1 The dimensions and tolerances for these product formsshall be those shown on the
27、 drawing that forms a part of eachorder or as agreed upon between the manufacturer and thepurchaser.13. Workmanship, Finish, and Appearance13.1 The product forms shall be of uniform quality andcondition and shall not have laps, cracks, bursts, or otherinjurious defects that interfere with normal app
28、lications.13.2 The purchaser shall specify in the order the conditionor finish required, such as, hot worked, hot worked and cleanedby blasting, pickling, or machining.TABLE 1 Chemical RequirementsElementConcentration, %Copper Alloy UNS No.C17500Copper Alloy UNS No.C17510Beryllium 0.40.7 0.20.6Cobal
29、t 2.42.7 0.3 maxNickel . 1.42.2Iron, max 0.10 0.10Aluminum, max 0.20 0.20Silicon, max 0.20 0.20Copper Remainder RemainderTABLE 2 Electrical ConductivityTemper IACS, min, %TF00 (AT) 45B870 08 (2014)214. Test Methods14.1 Chemical Composition:14.1.1 The chemical composition shall, in case ofdisagreemen
30、t, be determined in accordance with the applicablemethod in the Annex of Specification B194.14.1.2 Test methods to be followed for the determination ofelement(s) resulting from contractual or purchase-order agree-ment shall be as agreed upon between the manufacturer and thepurchaser.15. Keywords15.1
31、 copper beryllium extrusions; copper beryllium forg-ings; UNS Alloy C17500; UNS Alloy C17510SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue (B870 - 02)that may impact the use of this standard. (Approved April 1, 2008)(1) Under sec
32、tion 1.1 revised Beryllium entry for C17500.(2) Document was revised to meet the requirements of Formand Style for ASTM Standards (Guide B950).ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of th
33、is 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.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five ye
34、ars 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 International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical commi
35、ttee, 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 shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 194
36、28-2959,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 st
37、andard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 3 Mechanical PropertiesTemper DesignationSizeTensile Strength,ksi (MPa)Yield Strength,ksi (MPa)Rockwell HardnessB ScaleStandard FormerTB00Solution Heat-Treated(A) All 3055 (207380) 1030 (69207) 50 maxTF00Precipitation Hardened(AT) Up to 4 in. incl. 100130A(690897) 80100A(550690) 92 minOver 4 in. to 6 in. incl. 95125A(655863) 7595A(517656) 92 minOver 6 in. to 8 in. incl. 90120A(620828) 7090A(483620) 92 minOver 8 in. 80100A(550690) 6080A(414550) 90 minAThe upper limits are for design guidance only.B870 08 (2014)3
