1、Designation: B 618/B 618M 08Standard Specification forAluminum-Alloy Investment Castings1This standard is issued under the fixed designation B 618/B 618M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers aluminum-alloy investmentc
3、astings designated as shown in Table 1.1.2 This specification is not intended for aluminum-alloyinvestment castings used in aerospace applications.1.3 Alloy and temper designations are in accordance withANSI H35.1/H35.1 (M). The equivalent Unified NumberingSystem alloy designations are in accordance
4、 with PracticeE 527.1.4 Unless the order specifies the “M” specification desig-nation, the material shall be furnished to the inch-pound units.1.5 For acceptance criteria for inclusion of new aluminumand aluminum alloys and their properties in this specification,see Annex A1 and Annex A2.1.6 UnitsTh
5、e values stated in either SI units or inch-pound units are to be regarded separately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in noncon-formance with the
6、standard.1.7 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Ref
7、erenced Documents2.1 The following documents of the issue in effect on thedate of purchase form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B 179 Specification for Aluminum Alloys in Ingot andMolten Forms for Castings from All Casting ProcessesB 275 Practice for C
8、odification of Certain Nonferrous Met-als and Alloys, Cast and WroughtB 557 Test Methods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy ProductsB 557M Test Methods for Tension Testing Wrought andCast Aluminum- and Magnesium-Alloy Products (Metric)B 660 Practices for Packaging/Pack
9、ing of Aluminum andMagnesium ProductsB 881 Terminology Relating to Aluminum- andMagnesium-Alloy ProductsB 917/B 917M Practice for Heat Treatment of Aluminum-Alloy Castings from All ProcessesD 3951 Practice for Commercial PackagingE29 Practice for Using Significant Digits in Test Data toDetermine Con
10、formance with SpecificationsE34 Test Methods for ChemicalAnalysis ofAluminum andAluminum-Base AlloysE94 Guide for Radiographic ExaminationE 155 Reference Radiographs for Inspection of Aluminumand Magnesium CastingsE 165 Test Method for Liquid Penetrant ExaminationE 527 Practice for Numbering Metals
11、and Alloys in theUnified Numbering System (UNS)E 607 Test Method for Atomic Emission SpectrometricAnalysis Aluminum Alloys by the Point to Plane Tech-nique Nitrogen AtmosphereE 716 Practices for Sampling Aluminum and AluminumAlloys for Spectrochemical AnalysisE 1251 Test Method for Analysis of Alumi
12、num and Alumi-num Alloys by Atomic Emission SpectrometryIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI): The Modern Metric System2.3 ANSI Standard:3H35.1/H35.1 (M) - 2006 American National Standard Alloyand Temper Designation Systems for Aluminum2.4 Military Standards:4MIL-
13、STD-129 Marking for Shipment and StorageMIL-STD-276 Impregnation of Porous Nonferrous MetalCastings1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.01 onAluminum Alloy Ingots and Castings.Current editio
14、n approved June 1, 2008. Published July 2008. Originally approvedin 1977. Last previous edition approved in 2007 as B 618/B 618M 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume inform
15、ation, refer to the standards Document Summary page onthe ASTM website.3Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,Arlington, VA 22209, http:/www.aluminum.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia,
16、 PA 19111-5098, http:/www.dodssp.daps.mil.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.TABLE1ChemicalCompositionRequirementsNOTE1Whensingleunitsareshown,theseindica
17、tethemaximumamountspermitted.NOTE2Analysisshallbemadefortheelementsforwhichlimitsareshowninthistable.NOTE3Thefollowingappliestoallspecifiedlimitsinthistable:Forpurposesofacceptanceandrejection,anobservedvalueoracalculatedvalueobtainedfromanalysisshouldberoundedofftothenearestunitinthelastright-handp
18、laceoffiguresusedinexpressingthespecifiedlimit(PracticeE29).AlloyComposition,%ANSIAUNSSiliconIronCopperMan-ganeseMag-nesiumChro- miumNickelZincTitan- iumTinOtherBElementsAluminumEachTotalC201.0A020100.100.154.05.20.200.500.150.55.0.150.35.D0.050.10remainder204.0A020400.200.354.25.00.100.150.35.0.050
19、.100.150.300.050.050.15remainder242.0A024200.71.03.54.50.351.21.80.251.72.30.350.25.0.050.15remainder295.0A029500.71.51.04.05.00.350.03.0.350.25.0.050.15remainder319.0A031905.56.51.03.04.00.500.10.0.351.00.25.0.50remainder328.0A032807.58.51.01.02.00.200.60.200.60.350.251.50.25.0.50remainder355.0A035
20、504.55.50.6E1.01.50.50E0.400.60.25.0.350.25.0.050.15remainderC355.0A335504.55.50.201.01.50.100.400.6.0.100.20.0.050.15remainder356.0A035606.57.50.6E0.250.35E0.200.45.0.350.25.0.050.15remainderA356.0A135606.57.60.200.200.100.250.45.0.100.20.0.050.15remainder443.0A044304.56.00.80.60.500.050.25.0.500.2
21、5.0.35remainderB443.0A244304.56.00.80.150.350.05.0.350.25.0.050.15remainder514.0A051400.350.500.150.353.54.5.0.150.25.0.050.15remainder520.0A052000.250.300.250.159.510.6.0.150.25.0.050.15remainder535.0A053500.150.150.050.100.256.27.5.0.100.25.F0.050.15remainder705.0A070500.200.80.200.400.61.41.80.20
22、0.40.2.73.30.25.0.050.15remainder707.0A070700.200.80.200.400.61.82.40.200.40.4.04.50.25.0.050.15remainder710.0GA071000.150.500.350.650.050.60.8.6.07.00.25.0.050.15remainder712.0GA071200.300.500.250.100.500.650.400.6.5.06.50.150.25.0.050.20remainder713.0A071300.251.10.401.00.60.200.500.350.157.08.00.
23、25.0.100.25remainder771.0A077100.150.150.100.100.81.00.060.20.6.57.50.100.20.0.050.15remainder850.0A085000.70.70.71.30.100.10.0.71.3.0.205.57.0.0.30remainder851.0GA085102.03.00.70.71.30.100.10.0.30.7.0.205.57.0.0.30remainder852.0GA085200.400.71.72.30.100.60.9.0.91.5.0.205.57.0.0.30remainderAASTMallo
24、ydesignationsareinPracticeB275.B“Others”includeslistedelementsforwhichnospecificlimitisshownaswellasunlistedmetallicelements.Theproducermayanalyzesamplesfortraceelementsnotspecifiedinthespecification.However,suchanalysisisnotrequiredandmaynotcoverallmetallic“Others”elements.Shouldanyanalysisbythepro
25、ducerorthepurchaserestablishthatan“Others”elementexceedsthelimitof“Each”orthattheaggregateofseveral“Others”elementsexceedsthelimitof“Total,”thematerialshallbeconsiderednonconforming.COtherElementsTotalshallbethesumofunspecifiedmetallicelements0.010%ormore,roundedtotheseconddecimalbeforedeterminingth
26、esum.DContainssilver0.401.0%.EIfironexceeds0.45%,manganesecontentshallnotbelessthanonehalfoftheironcontent.FContainsberyllium0.0030.007%,boron0.002%max.G710.0formerlyA712.0,712.0formerlyD712.0,851.0formerlyA850.0,852.0formerlyB850.0.B 618/B 618M 0822.5 Federal Standard:Fed. Std. No. 123 Marking for
27、Shipment (Civil Agencies)42.6 AMS Standard:5AMS 2771 Heat Treatment of Aluminum Alloy Castings2.7 NAVSEA Standard:6S9074-AR-GIB-010/278 Requirements for FabricationWelding and Inspection, and Casting Inspection andRepair for Machinery, Piping, and Pressure Vessels2.8 Other Standards:7CEN EN 14242 Al
28、uminum and Aluminum Alloys, Chemi-cal Analysis, Inductively Coupled Plasma Optical Emis-sion Spectral Analysis3. Terminology3.1 Definitions: Refer to Terminology B 881 for definitionsof product terms used in this specification.3.1.1 investment castinga metal object produced by sur-rounding (investin
29、g) an expendable pattern (usually wax orplastic) with a refractory slurry that sets at room temperature,after which the pattern is removed through the use of heat, andthen filling the resulting cavity with molten metal and allowingit to solidify.4. Ordering Information4.1 Orders for material under t
30、his specification shall includethe following information (Sections 1.4 and 1.6):4.1.1 This specification designation (which includes thenumber, the year, and the revision letter, if applicable),NOTE 1For inch-pound application, specify Specification B 618 andfor metric application specify Specificat
31、ion B 618M. Do not mix units.4.1.2 Alloy (Section 7 and Table 1),4.1.3 Temper (Section 11 and Table 2 Table 3),4.1.4 Applicable drawing or part number,4.1.5 The quantity in either pieces or pounds kilograms.4.2 Additionally, orders for material to this specificationshall include the following inform
32、ation when required by thepurchaser:4.2.1 Whether chemical analysis and tensile property re-ports are required (Table 1, Table 2 Table 3),4.2.2 Whether castings or test specimens or both may besupplied in the artificially agedT5 temper for alloys 705.0,707.0, 712.0, and 713.0 (see 11.2),4.2.3 Whethe
33、r test specimens cut from castings are requiredin addition to or instead of separately cast specimens (see 11.3and 12.2),4.2.4 Whether heat treatment is to be performed in accor-dance with AMS 2771 (see 16)4.2.5 Whether repairs are permissible (see 17.1),4.2.6 Whether inspection is required at the p
34、roducersworks (see 19.1),4.2.7 Whether surface requirements shall be checkedagainst observational standards where such standards areestablished (see 20.1),4.2.8 Whether liquid penetrant inspection is required (see20.3),4.2.9 Whether radiographic inspection is required (see20.4),4.2.10 Whether certif
35、ication is required (see 22.1),4.2.11 Whether foundry control is required (10),4.2.12 Whether the material shall be packaged or marked, orboth, in accordance with Practices B 660, MIL-STD-129,D 3951, and Fed. Std. No. 123 (see 24.3).5. Responsibility for Quality Assurance5.1 Responsibility for Inspe
36、ction and TestsUnless other-wise specified in the contract or purchase order, the producershall be responsible for the performance of all inspection andtest requirements specified herein. Except as otherwise speci-fied in the contract or order, the producer may use his own orany other suitable facil
37、ities for the performance of the inspec-tion and test requirements specified herein, unless disapprovedby the purchaser. The purchaser shall have the right to performany of the inspections and tests set forth in this specificationwhere such inspections are deemed necessary to confirm thatmaterial co
38、nforms to prescribed requirements.6. Materials and Manufacture6.1 The responsibility of furnishing castings that can be laidout and machined to the finished dimensions within thepermissible variations specified, as shown on the blueprints ordrawings, shall rest with the producer, except where patter
39、nequipment is furnished by the purchaser.6.1.1 Unless otherwise specified, only aluminum alloy con-forming to the requirements of Specification B 179 or produc-ers foundry scrap (identified as being made from alloyconforming to Specification B 179) shall be used in theremelting furnace from which mo
40、lten metal is taken forpouring directly into castings. Additions of small amounts ofmodifiers and grain refining elements or alloys are permitted.6.1.2 Pure materials, recycled materials, and master alloysmay be used to make alloys conforming to this specification,provided chemical analysis can be t
41、aken and adjusted toconform to Table 1 prior to pouring any castings.7. Chemical Composition7.1 The product shall conform to the chemical compositionlimits prescribed in Table 1. Conformance shall be determinedby the producer by taking samples at the time castings arepoured in accordance with E 716
42、and analyzed in accordancewith E 607, E 1251, E34or EN 14242. If the producer hasdetermined the composition of the material during casting, theyshall not be required to sample and analyze the finishedproduct.7.2 If it becomes necessary to analyze castings for conform-ance to chemical composition lim
43、its, the method used tosample castings for the determination of chemical compositionshall be by agreement between the producer and the purchaser.Analysis shall be performed in accordance with E 716, E 607,E 1251, E34or EN 14242 (ICP method).5Available from Society of Automotive Engineers (SAE), 400
44、CommonwealthDr., Warrendale, PA 15096-0001, http:/www.sae.org.6Available from Naval Sea Systems Command (NAVSEA), 1333 Isaac HullAve., SE, Washington, DC 20376, http:/www.navsea.navy.mil.7Available from European Committee for Standardization (CEN), 36 rue deStassart, B-1050, Brussels, Belgium, http:
45、/www.cenorm.be.B 618/B 618M 083TABLE 2 Tensile RequirementsA(Inch-Pound Units)NOTE 1 For purposes of determining conformance with this specification, each value for tensile strength and yield strength shall be rounded to thenearest 0.1 ksi and each value for elongation shall be rounded to the neares
46、t 0.5 %, both in accordance with the rounding method of Practice E29.AlloyTemperBTensileStrength, min,ksiYield Strength(0.2 % offset)min, ksiElongation in2 in. or 43diameter,min, %TypicalBrinell Hard-ness,C500kgf, 10 mmANSIDUNS201.0 A02010 T6 60.0 50.0 5.0 .T7 60.0 50.0 3.0 .204.0 A02040 T4 45.0 28.
47、0 6.0 .T6 30.0EE115242.0 A02420 OF23.0 70T61 32.0 20.0E105295.0 A02950 T4 29.0 13.0 6.0 60T6 32.0 20.0 3.0 75T62 36.0 28.0B95T7 29.0 16.0 3.0 70319.0 A03190 F 23.0 13.0 1.5 70T6 31.0 20.0 1.5 80328.0 A03280 F 25.0 14.0 1.0 60T6 34.0 21.0 1.0 80355.0 A03550 T6 32.0 20.0 2.0 80T51 25.0 18.0E65T71 30.0
48、 22.0E75C355.0 A33550 T6 36.0 25.0 2.5 .356.0 A03560 F 19.0E2.0 55T6 30.0 20.0 3.0 70T7 31.0EE75T51 23.0 16.0E60T71 25.0 18.0 3.0 60A356.0 A13560 T6 34.0 24.0 3.5 80443.0 A04430 F 17.0 7.0 3.0 40B443.0 A24430 F 17.0 6.0 3.0 40514.0 A05140 F 22.0 9.0 6.0 50520.0 A05200 T4 42.0 22.0 12.0 75535.0 A0535
49、0 F 35.0 18.0 9.0 70705.0 A07050 T1Gand T5H30.0 17.0I5.0 65707.0 A07070 T1G33.0 22.0I2.0 85T7 37.0 30.0I1.0 80710.0JA07100 T1G32.0 20.0 2.0 75712.0JA07120 T1Gand T5H34.0 25.0I4.0 75713.0 A07130 T1Gand T5H32.0 22.0 3.0 75771.0 A07710 T5 42.0 38.0 1.5 100T51 32.0 27.0 3.0 85T52 36.0 30.0 1.5 85T6 42.0 35.0 5.0 90T71 48.0 45.0 2.0 120850.0 A08500 T5 16.0E5.0 45851.0JA08510 T5 17.0E3.0 45852.0JA08520 T5 24.0 18.0E60AIf agreed upon by the producer and the purchaser, other mechani
