ASTM_B_806_-_14.pdf

Designation:B80614Standard Specification forCopper Alloy Permanent Mold Castings for GeneralApplications1This standard is issued under the fixed designation B806;the number immediately following the designation indicates the year oforiginal adoption or,in the 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification establishes requirements for copperalloy2permanent mold castings for general applications.Nominal compositions of the alloys under this specification areshown in Table 1.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form part of this specification to the extentreferenced herein:2.2 ASTM Standards:3B208 Practice for Preparing Tension Test Specimens forCopper Alloy Sand,Permanent Mold,Centrifugal,andContinuous CastingsB824 Specification for General Requirements for CopperAlloy CastingsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)3.Ordering Information3.1 Orders for casting under this specification shall includethe following information:3.1.1 Quantity of castings required,3.1.2 Copper Alloy UNS number(Table 2)and temper(as-cast,heat-treated,and so forth),(4.2),3.1.3 Specification number,title,and year of issue.3.1.4 Pattern or drawing number,and condition(cast,machined,and so forth),3.1.5 Pressure test requirements,if specified in the purchaseorder(Specification B824),3.1.6 Soundness requirements,if specified in the purchaseorder(Specification B824),3.1.7 Repair of castings(Section 7),3.1.8 Certification,if specified in the purchase order(Speci-fication B824),3.1.9 Foundry test report,if specified in the purchase order(Specification B824),3.1.10 Witness inspection,if specified in the purchase order(Specification B824),3.1.11 Product marking,if specified in the purchase order(Specification B824),and3.1.12 Castings for Seawater Service(Section 4).3.2 When material is purchased for agencies of the U.S.government,the Supplementary Requirements of SpecificationB824 may be specified.4.Materials and Manufacture4.1 For better corrosion resistance in sea water applications,castings in Copper Alloy UNS No.C95800 shall be given atemper anneal heat treatment at 1250 6 50F(675 6 10C)for6 h minimum.Cooling shall be the fastest means possible thatwill not cause excess distortion or cracking.Propeller castingsshall be exempt from this requirement.5.Chemical Composition5.1 The castings shall conform to the chemical requirementsspecified in Table 2.5.2 These specification limits do not preclude the presenceof other elements.Limits may be established for unnamedelements by agreement between the manufacturer and thesupplier and the purchaser.Copper or zinc may be given as theremainder and may be taken as the difference between the sumof all the elements analyzed and 100%.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.05 onCastings and Ingots for Remelting.Current edition approved April 1,2014.Published May 2014.Originallyapproved in 1990.Last previous edition approved in 2008 as B806 08a.DOI:10.1520/B0806-14.2The UNS system for copper and copper alloys(see Practice E527)is a simpleexpansion of the former standard designation system accomplished by the additionof a prefix“C”and a suffix“00”.The suffix can be used to accommodatecomposition variations of the base alloy.3For referenced ASTM standards,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 International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Mechanical Properties6.1 Mechanical properties shall be determined from sepa-rately cast test bar castings and shall meet the requirementsshown in Table 3.7.Casting Repair7.1 Alloys included in this specification are generally weld-able.Weld repairs may be made at the manufacturers discre-tion.7.2 The castings shall not be impregnated without approvalof the purchaser(3.1.7).8.General Requirements8.1 Material furnished under this specification shall con-form to the applicable requirements of Specification B824.9.Sampling9.1 A lot shall be as defined in Specification B824 with theexception that a lot shall consist of not more than 1000 lbs(455kg)of castings(gates and risers removed).9.2 Test bar castings shall