1、Designation: B 870 08Standard Specification forCopper-Beryllium Alloy Forgings and Extrusions Alloys(UNS Nos. C17500 and C17510)1This standard is issued under the fixed designation B 870; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revis
2、ion, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification establishes the requirements forcopper-beryllium alloy forgings and extrusions.
3、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 are provided fori
4、nformation 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 standard toest
5、ablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 194 Specification for Copper-Beryllium Alloy Plate,Sheet, Strip, and Rolled BarB 249/B 249M Specification for General Requirements forWr
6、ought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB 441 Specification for Copper-Cobalt-Beryllium, Copper-Nickel-Beryllium, and Copper-Nickel-Lead-BerylliumRod and Bar (UNS Nos. C17500, C17510, and C17465)B 601 Classification for Temper Designations for Copperand Copper AlloysWrought and Cas
7、tB 846 Terminology for Copper and Copper AlloysB 950 Guide for Editorial Procedures and Form of ProductSpecifications for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardness of MetallicMaterialsE 527 Practice for Numbering Metals an
8、d Alloys in theUnified Numbering System (UNS)E 1004 Practice for Determining Electrical ConductivityUsing the Electromagnetic (Eddy-Current) Method3. General Requirements3.1 The following sections of Specification B 249/B 249Mform a part of this specification:3.1.1 Material and Manufacture,3.1.2 Sam
9、pling,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 copper and co
10、pperalloys, see Terminology B 846.4.2 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 cross section.4
11、.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 specifica-tion are generally construed to be large section products; round, oval, halfround, geomet
12、ric 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 B 441.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper
13、 Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved April 1, 2008. Published April 2008. Originallyapproved in 1996. Last previous edition approved in 2002 as B 870 - 02.2For referenced ASTM standards, visit the ASTM website,
14、 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Dri
15、ve, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. 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. (Section 1),5.1.3 Temper (Section 8
16、) 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 10),5.2.2 Special marking or
17、 packaging (Specification B 249/B 249M),5.2.3 Inspection (Specification B 249/B 249M),5.2.4 Certification (Specification B 249/B 249M),5.2.5 Mill test report (Specification B 249/B 249M),5.2.6 Finish (Section 14), and5.2.7 When material is purchased for agencies of the U.S.government, this shall be
18、specified in the contract or purchaseorder, and the material shall conform to the supplementaryrequirements as defined in the current issue of SpecificationB 249/B 249M.6. Materials and Manufacture6.1 Materials:6.1.1 The material of manufacture should be a cast billetconforming to the chemical compo
19、sition 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-treating, precipitation
20、 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 may be established
21、 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 the ordering informa
22、tion 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 B 601 aresolution heat treated TB00 (A) and precipitation heat treatedTF00 (AT).9. Physical Property Requirements9.1 Elect
23、rical ConductivityProduct supplied under thisspecification shall conform to the conductivity requirementsprescribed in Table 2 after precipitation heat-treatment whentested in accordance with Practice E 1004.10. Mechanical Property Requirements10.1 HardnessThe product furnished under this specifi-ca
24、tion shall conform to the hardness requirements prescribed inTable 3, when tested in accordance with Test Method 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 TestMethods E811. H
25、eat 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 cooled.NOTE 2Special combina
26、tion 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 drawing that forms a par
27、t 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 applications.13.2 The purcha
28、ser shall specify in the order the conditionor finish required, such as, hot worked, hot worked and cleanedby blasting, pickling, or machining.14. Test Methods14.1 Chemical Composition:14.1.1 The chemical composition shall, in case of disagree-ment, be determined in accordance with the applicable me
29、thodin the Annex of Specification B 194.TABLE 1 Chemical RequirementsElementConcentration, %Copper Alloy UNS No.C17500Copper Alloy UNS No.C17510Beryllium 0.40.7 0.20.6Cobalt 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
30、 Electrical ConductivityTemper IACS, min, %TF00 (AT) 45B87008214.1.2 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 copper beryllium extrusions;
31、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 (B 870 - 02)that may impact the use of this standard. (Approved April 1, 2008)(1) Under section 1.1 revised Beryllium en
32、try for C17500. (2) Document was revised to meet the requirements of Formand Style for ASTM Standards (B 950).ASTM 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
33、 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 years andif not revised, either rea
34、pproved 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 committee, which you may attend. If yo
35、u 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 19428-2959,United States. Individual
36、 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).TABLE 3 Mechanical PropertiesTemper DesignationSizeTensile Strength,ksi
37、 (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.B870083
