1、Designation: B618/B618M 11Standard Specification forAluminum-Alloy Investment Castings1This standard is issued under the fixed designation B618/B618M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A num
2、ber 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 investmentcasti
3、ngs designated as shown in Table 1.1.2 This specification is for aluminum-alloy investmentcastings used in general purpose applications. It may notaddress the mechanical properties integrity testing and verifi-cation required for highly loaded or safety critical applications.1.3 Alloy and temper des
4、ignations are in accordance withANSI H35.1/H35.1 (M). The equivalent Unified NumberingSystem alloy designations are in accordance with PracticeE527.1.4 Unless the order specifies the “M” specification desig-nation, the material shall be furnished to the inch-pound units.1.5 For acceptance criteria f
5、or inclusion of new aluminumand aluminum alloys and their properties in this specification,see Annex A1 and Annex A2.1.6 UnitsThe 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, ea
6、ch system shall be used independently of the other.Combining values from the two systems may result in noncon-formance with the 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 e
7、stablish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced 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 Standar
8、ds:2B179 Specification for Aluminum Alloys in Ingot andMolten Forms for Castings from All Casting ProcessesB275 Practice for Codification of Certain Nonferrous Met-als and Alloys, Cast and WroughtB557 Test Methods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy ProductsB557M Test M
9、ethods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy Products (Metric)B660 Practices for Packaging/Packing of Aluminum andMagnesium ProductsB881 Terminology Relating toAluminum- and Magnesium-Alloy ProductsB917/B917M Practice for Heat Treatment of Aluminum-Alloy Castings from All
10、 ProcessesD3951 Practice for Commercial PackagingE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE34 Test Methods for Chemical Analysis of Aluminum andAluminum-Base AlloysE94 Guide for Radiographic ExaminationE155 Reference Radiographs for Inspection
11、 of Aluminumand Magnesium CastingsE165 Practice for Liquid Penetrant Examination for GeneralIndustryE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)E607 Test Method for Atomic Emission SpectrometricAnalysis Aluminum Alloys by the Point to Plane Tech-nique Nitrogen A
12、tmosphere3E716 Practices for Sampling and Sample Preparation ofAluminum and Aluminum Alloys for Determination ofChemical Composition by Spectrochemical AnalysisE1251 Test Method for Analysis of Aluminum and Alumi-num Alloys by Spark Atomic Emission SpectrometryIEEE/ASTM SI 10 Standard for Use of the
13、 InternationalSystem of Units (SI): The Modern Metric System2.3 ANSI Standard:4H35.1/H35.1 (M) - 2006 American National Standard Alloy1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.01 onAluminum Alloy
14、 Ingots and Castings.Current edition approved Nov. 1, 2011. Published December 2011. Originallyapproved in 1977. Last previous edition approved in 2010 as B618/B618M 10.DOI: 10.1520/B0618_B0618M-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service
15、at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.4Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite
16、 600,Arlington, VA 22209, http:/www.aluminum.org.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.TABLE 1 Chemical Composition RequirementsNOTE 1When single units are s
17、hown, these indicate the maximum amounts permitted.NOTE 2Analysis shall be made for the elements for which limits are shown in this table.NOTE 3The following applies to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated value obtained from
18、 analysis should be roundedoff to the nearest unit in the last right-hand place of figures used in expressing the specified limit (Practice E29).Alloy Composition, %ANSIAUNS Silicon Iron CopperMan-ganeseMag-nesiumChro-miumNickel ZincTitan-iumTinOtherBElementsAluminumEach TotalC201.0 A02010 0.10 0.15
19、 4.05.2 0.200.50 0.150.55 . . . 0.150.35 .D0.05 0.10 remainder204.0 A02040 0.20 0.35 4.25.0 0.10 0.150.35 . 0.05 0.10 0.150.30 0.05 0.05 0.15 remainder242.0 A02420 0.7 1.0 3.54.5 0.35 1.21.8 0.25 1.72.3 0.35 0.25 . 0.05 0.15 remainder295.0 A02950 0.71.5 1.0 4.05.0 0.35 0.03 . . 0.35 0.25 . 0.05 0.15
20、 remainder319.0 A03190 5.56.5 1.0 3.04.0 0.50 0.10 . 0.35 1.0 0.25 . . 0.50 remainder328.0 A03280 7.58.5 1.0 1.02.0 0.200.6 0.200.6 0.35 0.25 1.5 0.25 . . 0.50 remainder355.0 A03550 4.55.5 0.6E1.01.5 0.50E0.400.6 0.25 . 0.35 0.25 . 0.05 0.15 remainderC355.0 A33550 4.55.5 0.20 1.01.5 0.10 0.400.6 . .
21、 0.10 0.20 . 0.05 0.15 remainder356.0 A03560 6.57.5 0.6E0.25 0.35E0.200.45 . . 0.35 0.25 . 0.05 0.15 remainderA356.0 A13560 6.57.6 0.20 0.20 0.10 0.250.45 . . 0.10 0.20 . 0.05 0.15 remainder443.0 A04430 4.56.0 0.8 0.6 0.50 0.05 0.25 . 0.50 0.25 . . 0.35 remainderB443.0 A24430 4.56.0 0.8 0.15 0.35 0.
22、05 . . 0.35 0.25 . 0.05 0.15 remainder514.0 A05140 0.35 0.50 0.15 0.35 3.54.5 . . 0.15 0.25 . 0.05 0.15 remainder520.0 A05200 0.25 0.30 0.25 0.15 9.510.6 . . 0.15 0.25 . 0.05 0.15 remainder535.0 A05350 0.15 0.15 0.05 0.100.25 6.27.5 . . . 0.100.25 .F0.05 0.15 remainder705.0 A07050 0.20 0.8 0.20 0.40
23、0.6 1.41.8 0.200.40 . 2.73.3 0.25 . 0.05 0.15 remainder707.0 A07070 0.20 0.8 0.20 0.400.6 1.82.4 0.200.40 . 4.04.5 0.25 . 0.05 0.15 remainder710.0GA07100 0.15 0.50 0.350.65 0.05 0.60.8 . . 6.07.0 0.25 . 0.05 0.15 remainder712.0GA07120 0.30 0.50 0.25 0.10 0.500.65 0.400.6 . 5.06.5 0.150.25 . 0.05 0.2
24、0 remainder713.0 A07130 0.25 1.1 0.401.0 0.6 0.200.50 0.35 0.15 7.08.0 0.25 . 0.10 0.25 remainder771.0 A07710 0.15 0.15 0.10 0.10 0.81.0 0.060.20 . 6.57.5 0.100.20 . 0.05 0.15 remainder850.0 A08500 0.7 0.7 0.71.3 0.10 0.10 . 0.71.3 . 0.20 5.57.0 . 0.30 remainder851.0GA08510 2.03.0 0.7 0.71.3 0.10 0.
25、10 . 0.30.7 . 0.20 5.57.0 . 0.30 remainder852.0GA08520 0.40 0.7 1.72.3 0.10 0.60.9 . 0.91.5 . 0.20 5.57.0 . 0.30 remainderAASTM alloy designations are in Practice B275.B“Others” includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may anal
26、yze samples for trace elements not specified in the specification. However, suchanalysis is not required and may not cover all metallic “Others” elements. Should any analysis by the producer or the purchaser establish that an “Others” element exceeds the limit of “Each” or that the aggregate ofsever
27、al “ Others” elements exceeds the limit of “Total,” the material shall be considered nonconforming.COther ElementsTotal shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.DContains silver 0.401.0 %.EIf iron exceeds 0.45 %, mang
28、anese content shall not be less than one half of the iron content.FContains beryllium 0.0030.007 %, boron 0.002 % max.G710.0 formerly A712.0, 712.0 formerly D712.0, 851.0 formerly A850.0, 852.0 formerly B850.0.B618/B618M112and Temper Designation Systems for Aluminum2.4 Military Standards:5MIL-STD-12
29、9 Marking for Shipment and StorageMIL-STD-276 Impregnation of Porous Nonferrous MetalCastings2.5 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)52.6 AMS Standard:6AMS 2771 Heat Treatment of Aluminum Alloy Castings2.7 NAVSEA Standard:7S9074-AR-GIB-010/278 Requirements for Fab
30、ricationWelding and Inspection, and Casting Inspection andRepair for Machinery, Piping, and Pressure Vessels2.8 Other Standards:8CEN EN 14242 Aluminum and Aluminum Alloys, Chemi-cal Analysis, Inductively Coupled Plasma Optical Emis-sion Spectral Analysis3. Terminology3.1 Definitions: Refer to Termin
31、ology B881 for definitionsof product terms used in this specification.3.1.1 investment castinga metal object produced by sur-rounding (investing) 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
32、 heat, andthen filling the resulting cavity with molten metal and allowingit to solidify.4. Ordering Information4.1 Orders for material under this specification shall includethe following information (Sections 1.4 and 1.6):4.1.1 This specification designation (which includes thenumber, the year, and
33、 the revision letter, if applicable),NOTE 1For inch-pound application, specify Specification B618 andfor metric application specify Specification B618M. 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 Th
34、e quantity in either pieces or pounds kilograms.4.2 Additionally, orders for material to this specificationshall include the following information 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 casting
35、s 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 Whether 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
36、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 producersworks (see 19.1),4.2.7 Whether surface requirements shall be checkedagainst observational standards where such standards areestablished (see 20.1),4.2.
37、8 Whether liquid penetrant inspection is required (see20.3),4.2.9 Whether radiographic inspection is required (see20.4),4.2.10 Whether certification is required (see 22.1),4.2.11 Whether foundry control is required (10),4.2.12 Whether Practices B660 applies and, if so, the levelsof preservation, pac
38、kaging and packing required (24.3),4.2.13 Whether marking in accordance with Fed. Std. 123or D3951 or MIL-STD 129 applies ( 24.3).5. Responsibility for Quality Assurance5.1 Responsibility for Inspection and TestsUnless other-wise specified in the contract or purchase order, the producershall be resp
39、onsible 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 facilities for the performance of the inspec-tion and test requirements specified herein, unless disapproved
40、by 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 conforms to prescribed requirements.6. Materials and Manufacture6.1 The responsibility of furnishing cast
41、ings 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 patternequipment is furnished by the purchaser.6.1.1 Unless otherwise specified, only aluminum alloy con-form
42、ing to the requirements of Specification B179 or produc-ers foundry scrap (identified as being made from alloyconforming to Specification B179) shall be used in the remelt-ing furnace from which molten metal is taken for pouringdirectly into castings. Additions of small amounts of modifiersand grain
43、 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 taken and adjusted toconform to Table 1 prior to pouring any castings.7. Chemical Composition7.1 The pro
44、duct 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 E716 and analyzed in accordancewith E607, E1251, E34 or EN 14242. If the producer hasdetermined the compositi
45、on of the material during casting, theyshall not be required to sample and analyze the finishedproduct.5Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.6Available from Society of Automotive Engin
46、eers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001, http:/www.sae.org.7Available from Naval Sea Systems Command (NAVSEA), 1333 Isaac HullAve., SE, Washington, DC 20376, http:/www.navsea.navy.mil.8Available from European Committee for Standardization (CEN), 36 rue deStassart, B-1050, Brussels
47、, Belgium, http:/www.cenorm.be.B618/B618M 113TABLE 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
48、 to the nearest 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 A020
49、40 T4 45.0 28.0 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 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 1
