1、Designation: B 870 02Standard 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 0.59 2.6C17510 0.40 1.81.2 UnitsThe values stated in inch-pound units are stan-dard. The values given in parentheses are mathematical con-versions to SI units, which are provided for information
4、 onlyand 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 toestablish appr
5、opriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:B 194 Specification for Copper-Beryllium Alloy Plate,Sheet, Strip, and Rolled Bar2B 249 Specification for General Requirements for WroughtCopper and C
6、opper-Alloy Rod, Bar, Shapes, and Forgings2B 441 Specification for Copper-Cobalt-Beryllium (UNSNo. C17500) and Copper-Nickel Beryllium (UNS No.C17510) Rod and Bar2B 601 Classification for Temper Designations for Copperand Copper Alloys-Wrought and Cast2B 846 Terminology for Copper and Copper Alloys2
7、E 8 Test Methods for Tension Testing of Metallic Materials3E 18 Test Methods for Rockwell Hardness and RockwellSuperficial Hardness of Metallic Materials3E 527 Practice for Numbering Metals and Alloys (UNS)4E 1004 Practice for Determining Electrical ConductivityUsing the Electromagnetic (Eddy-Curren
8、t) Method53. General Requirements3.1 The following sections of Specification B 249 form apart of this specification:3.1.1 Material and Manufacture,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 R
9、ehearing,3.1.8 Certification,3.1.9 Test Reports, and3.1.10 Packaging and Package Marking.4. Terminology4.14.1.1 For definitions of terms related to copper and copperalloys, see Terminology B 846.4.2 Definitions of Terms Specific to This Standard:4.2.1 extrusion, na uniform metal shape, long in relat
10、ionto 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.4.2.2 forging, na metal part worked to a predeterminedshape by one or more such processes as hammering, upsetting,pressing, rolling, and so
11、forth.NOTE 1Forged and extruded shapes in the context of this specifica-tion are generally construed to be large section products; round, oval, halfround, geometric custom-ordered cross-sections, and asymmetrical metalshapes. This is to generally differentiate products supplied according tothis docu
12、ment as opposed to forged and extruded “Rod and Bar” inSpecification B 441.5. Ordering Information5.1 Include the following information in orders for product:5.1.1 ASTM designation and year of issue,5.1.2 Copper Alloy UNS No. (Section 1),5.1.3 Temper (Section 8) or condition (Section 11),5.1.4 Drawi
13、ng, when required, and1This specification is under the jurisdiction of ASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved Oct. 10, 2002. Published December 2002. Originallyapproved in 19
14、96. Last previous edition approved in 1996 as B 870 - 96.2Annual Book of ASTM Standards, Vol 02.01.3Annual Book of ASTM Standards, Vol 03.01.4Annual Book of ASTM Standards, Vol 01.01.5Annual Book of ASTM Standards, Vol 03.03.1*A Summary of Changes section appears at the end of this standard.Copyrigh
15、t ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.5 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 Tensio
16、n tests (Section 10),5.2.2 Special marking or packaging (Specification B 249),5.2.3 Inspection (Specification B 249),5.2.4 Certification (Specification B 249),5.2.5 Mill test report (Specification B 249),5.2.6 Finish (Section 14), and5.2.7 When material is purchased for agencies of the U.S.governmen
17、t, this shall be specified in the contract or purchaseorder, and the material shall conform to the supplementaryrequirements as defined in the current issue of SpecificationB 249.6. Materials and Manufacture6.1 Materials:6.1.1 The material of manufacture should be a cast billetconforming to the chem
18、ical 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-treating, pre
19、cipitation 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 e
20、stablished 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 orderi
21、ng 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 B 601 aresolution heat treated TB00 (A) and precipitation heat treatedTF00 (AT).9. Physical Property Requirement
22、s9.1 Electrical 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
23、specifi-cation shall conform to the hardness requirements prescribed inTable 3, when tested in accordance with Test Method E 18.10.2 TensileWhen specified in the contact or purchaseorder, the product furnished shall conform to the tensileproperties in Table 3, when tested in accordance with TestMeth
24、ods E 811. 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 cooled.NOTE 2Spe
25、cial 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 drawing that
26、 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 applications.13.
27、2 The purchaser 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 a
28、pplicable methodin Annex A2 of Specification B 194.14.1.2 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 copper beryllium extrusions; copper bery
29、llium forg-ings; UNS Alloy C17500; UNS Alloy C17510TABLE 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 Remai
30、nderTABLE 2 Electrical ConductivityTemper IACS, min, %TF00 (AT) 45B870022SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue (B 870 - 96)that may impact the use of this standard.(1) Document was revised to meet the requirements of For
31、mand Style for ASTM Standards (Blue Book) and the CommitteeB05 Outline of Form of Specifications (OFS).(2) Added Test Methods E 8 to 2.1 and as reference in 10.2.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this st
32、andard. 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.This standard is subject to revision at any time by the responsible technical committee and must be rev
33、iewed 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 International Headquarters. Your comments will receive careful consideration at a meeting of theresponsi
34、ble 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 shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
35、onshohocken, 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).TABLE 3 Mechanical
36、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.B870023
