1、Designation: B327 13aB327 16Standard Specification forMaster Alloys Used in Making Zinc Die Casting Alloys1This standard is issued under the fixed designation B327; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last r
2、evision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers aluminumbase and zincbase master alloys used to make zinc die-casting alloys. Alloycompositions s
3、pecified for aluminumbase master alloys (hardeners) are designated as shown in Table 1. Alloy compositionsspecified for the zinc-base master alloys are designated as shown in Table 2.1.2 Aluminum alloy hardeners are added to Special High Grade zinc (per Specification B6) in the proper alloying ratio
4、s, asshown in Table 1, to produce zinc alloys for die casting.1.3 Zinc-base master alloy is added to Special High Grade zinc (per Specification B6) in the proper alloying ratio, as shownin Table 3, to produce zinc alloy for die casting.1.4 Master alloys may be supplied in the form of shot, bar, ingo
5、t or jumbo ingot as specified by the purchaser.1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.6 This standard does not purport t
6、o address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety DataSheet (MSDS)(SDS) for this product/material as provided by the manufacture
7、r, to establish appropriate safety and health practices,and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on date of order acceptance form a part of this specification to the extentreferenced herein:2.2 AS
8、TM Standards:2B6 Specification for ZincB275 Practice for Codification of Certain Zinc, Tin and Lead Die CastingsB899 Terminology Relating to Non-ferrous Metals and AlloysB908 Practice for the Use of Color Codes for Zinc Casting Alloy IngotB949 Specification for General Requirements for Zinc and Zinc
9、 Alloy ProductsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base AlloysE88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical CompositionE5
10、27 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)E536 Test Methods for Chemical Analysis of Zinc and Zinc AlloysE1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry2.3 ISO Standards:3ISO 3815-1 Zinc and zinc alloys Part
11、1: Analysis of solid samples by optical emission spectrometryISO 3815-2 Zinc and zinc alloys Part 2: Analysis by inductively coupled plasma optical emission spectrometry1 This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibili
12、ty of Subcommittee B02.04 on Zincand Cadmium.Current edition approved Aug. 1, 2013May 1, 2016. Published September 2013July 2016. Originally approved in 1958. Last previous edition approved in 2013 as B327 13.13a. DOI: 10.1520/B0327-13A.10.1520/B0327-16.2 For referencedASTM standards, visit theASTM
13、website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York
14、, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommen
15、ds that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700,
16、West Conshohocken, PA 19428-2959. United States13. Terminology3.1 Terms shall be defined in accordance with Terminology B899.3.2 Definitions of Terms Specific to This Standard:3.2.1 hardener, nan aluminum-base master alloy added to Special High Grade Zinc (SHG) to produce a zinc alloy for diecasting
17、.4. Ordering Information4.1 Orders for master alloys under this specification shall include the following information:4.1.1 Alloy (Table 1 or Table 2),4.1.2 Form: that is, shot, bar, ingot or jumbo ingot,4.1.3 Size: that is, maximum shot size or size of bar, ingot, or jumbo ingot,4.1.4 Unit weight:
18、that is, nominal weight of shot per bag or nominal weight of each bar, ingot, or jumbo ingot,TABLE 1 Chemical Requirements for Aluminum-Base Master AlloysNOTE 1The following applies to all specified limits in this table: For purposes of determining conformance with this specification, the observed v
19、alueor calculated value obtained from analysis shall be rounded off “to the nearest unit” in the last right hand place of figures used in expressing the specifiedlimit, in accordance with the rounding method of Practice E29.ASTMAlloyComposition, percentUsageAlu-minum,minCopper Iron,max Silicon,maxMa
20、nga-nese,maxMagnesiumA ZincChro-mium,maxNickel,maxTin,maxLead,maxACad-mium,maxAZG71AB 87.0 1.7 max 0.8 0.7 0.50 0.651.05 6.57.5 0.20 0.20 0.02 0.020 0.010 1 part by weight of ZG71A,B 21parts by weight of Special HighGrade zincC to make ASTMzinc alloy Z33524 (AG40AB )A Carried to one additional decim
21、al place to ensure proper control in the final alloy.B ASTM alloy designations were established in accordance with Practice B275.C ASTM Specification B6, for Zinc.TABLE 2 Chemical and Color Code Requirements for Zinc-Base Master AlloysA,B,CCommon(UNS)ColorCodeD Aluminum MagnesiumIronmaxCoppermaxLead
22、maxCadmiummaxTinmax ZincCommon(UNS)ColorCodeD Aluminum MagnesiumIronmax.Coppermax.Leadmax.Cadmiummax.Tinmax. ZincV12-3(Z33730)Pink 11.712.6 0.0900.16 0.070 0.25 0.005 0.004 0.003 RemainderV125(Z35740)Pink/Black 11.712.6 0.0900.16 0.070 2.13.3 0.005 0.004 0.003 RemainderA Zinc-base master alloys V12-
23、3 (Z33730) and V12-5 (Z35740) used for producing die casting alloys may contain nickel, chromium, silicon, and manganese up to 0.02,0.02, 0.035 and 0.05 %, respectively. No harmful effects have ever been noted due to the presence of these elements in up to these concentrations in die casting alloysa
24、nd, therefore, analyses are not required for these elements, except that nickel analysis is required when producing die casting alloy Z33526.B The UNS assignations were established in accordance with Practice E527.C For purposes of determining conformance with this specification, the observed value
25、or calculated value obtained from analysis shall be rounded off “to the nearest unit”in the last right hand place of figures used in expressing the specified limit, in accordance with the rounding method of Practice E29.D Refer to Practice B908. (Note: Color Codes indicated are for North American ap
26、plications.)TABLE 3 Weight Requirements for Zinc-Base Master Alloy Jumbo IngotsNOTE 1These requirements are based on the use of nominal 2400 lb or 1200 lb jumbo ingots of V12 (Z33730).NominalWeight, lbWeight Range, lbA UsageMinimum Maximum2400 2325 2475 1 part by weight of V12-3 (one 2400 lb jumbo i
27、ngot), 2 parts by weight (two 2400 lb jumbo ingots) of Special HighGrade zinc to make zinc alloy 3 (Zamak 3, UNS Z33524, AG40AB )or1 part by weight of V12-5 (one 2400 lb jumbo ingot), 2 parts by weight (two 2400 lb jumbo ingots) of Special HighGrade zinc to make zinc alloy 5 (Zamak 5, UNS Z35532, AC
28、41AB )1200 1150 1250 1 part by weight of V12-3 (one 1200 lb jumbo ingot), 2 parts by weight (one 2400 lb jumbo ingot) of Special High Gradezinc to make zinc alloy 3 (Zamak 3, UNS Z33524, AG40AB )or1 part by weight of V12-5 (one 1200 lb jumbo ingot), 2 parts by weight (one 2400 lb jumbo ingot) of Spe
29、cial High Gradezinc to make zinc alloy 5 (Zamak 5, UNS Z35532, AC41AB )A Jumbo ingots outside the above weight limits may be acceptable depending upon the chemistry, if mutually agreed upon between the producer and purchaser.B ASTM alloy designations were established in accordance with Practice B275
30、.B327 1624.1.5 Markings on shot bags, bars, ingot or jumbo ingot,4.1.6 Palletizing, if required: means of palletizing and maximum weight per pallet load,4.1.7 Place of inspection (Section 8), and4.1.8 For additional information see Section 4 of Specification B949.5. Materials and Manufacture5.1 The
31、material may be made by any suitable process.5.2 The material covered by this specification shall be of uniform quality and shall be free of dross, flux, or other harmfulcontamination.Also, if the material is in shot form, it shall be sound, uniform in size, and free of a heavily oxidized surface co
32、ating,stringers, and moisture.6. Chemical Requirements6.1 LimitsThe material shall conform to the requirements as to chemical composition prescribed in Table 1 or Table 2. Inaddition there are weight limits for zinc-base master alloys when supplied in jumbo ingot form. The weight of jumbo ingots sha
33、llconform to the requirements as prescribed in Table 3.6.2 In case of dispute the following requirements shall apply:6.2.1 Number of samplesSamples for verification of chemical composition shall be taken as follows:6.2.2 If the master alloys are shipped in carload lots of the same alloy, not less th
34、an five samples shall be taken at random fromthe carload for sampling. If the shipment is in less than carload lots, the following shall apply:6.2.2.1 Aluminum-base master alloysOne sample shall be taken for each 6000 lb (2722 kg) or fraction thereof. When it isdeemed necessary, a sample may be take
35、n from each melt of 500 lb (227 kg) or more of the alloy.6.2.2.2 Zinc-base master alloysOne sample shall be taken for each 10 000 lb (4536 kg) or fraction thereof. When necessary,a sample may be taken from each melt of 1000 lb (454 kg) or more.6.2.3 A sample may consist of an ingot or bar. In the ca
36、se of metal in shot form, a small representative lot of the shot may bemelted and poured to form a thin chill-cast bar approximately 14 in. (6.4 mm) thick or a suitable spectrographic mold sample. Inthe case of a jumbo ingot, the sample may be a cast spectrographic specimen taken from the same pour
37、used to cast the jumboingots.6.3 Methods of SamplingSamples for determination of chemical composition shall be taken in accordance with one of thefollowing methods:6.3.1 Samples for chemical analysis shall be taken from the material by drilling, sawing, milling, turning, or clipping arepresentative
38、piece or pieces to obtain a weight of prepared sample not less than 100 g. Sampling shall be in accordance withPractice E88.6.3.2 By agreement between the producer and the purchaser, other methods of sampling cast products for spectrochemical andother methods of analysis may be used. Such methods sh
39、all be suitable for the form of material being analyzed and the type ofanalytical method used.6.3.2.1 An optional method of sampling for analysis may be to melt together representative portions of each ingot selected, andthen sample the liquid composite by casting suitable specimens for spectrograph
40、ic or chemical analysis, or both.6.3.2.2 Samples may also be in the form of separately cast spectrographic specimens taken from the same pour used to cast theingot.6.3.3 As there is no generally accepted method for obtaining a representative sample from a jumbo ingot, the method of choicewill be as
41、described in 6.3.2.2.6.4 Method of AnalysisThe determination of chemical composition shall be in accordance with suitable methods.6.4.1 For aluminum-base master alloysThe determination of chemical composition shall be in accordance with suitablechemical (Test Methods E34), spectrochemical (Test Meth
42、od E1251) or other methods. In case of dispute, the results of TestMethods E34 shall be the basis of acceptance.6.4.2 For zinc-base master alloysThe determination of chemical composition shall preferably be in accordance with suitablechemical (Test Method E536), ISO 3815-1, ISO 3815-2, (note: ISO 38
43、15-2 is not specific for zinc-base master alloy, but may beused in a generic manner with suitable validation), or other methods. Because there is no specific ASTM or ISO method coveringthe composition of this zinc-base master alloy, the test method used as the basis of acceptance shall be as agreed
44、upon betweenthe producer and purchaser.7. Size and Shape7.1 Aluminum alloy hardener may be supplied in the form of shot, bar or ingot but typically is supplied as shot.7.2 Zinc-base master alloy may be supplied as ingot or jumbo ingot but is typically supplied as jumbo ingot.7.2.1 The weight of zinc
45、 master alloy jumbo ingots is important because they are added in a fixed ratio to Special High Gradezinc jumbo ingots. The weight of jumbo ingots shall be 1200 6 50 lbs or 2400 6 75 lbs. Other sizes or weight limits, or both,may be as agreed upon by the producer and customer.B327 1638. Source Inspe
46、ction8.1 See Section 9 of Specification B949.9. Rejection and Rehearing9.1 Material that fails to conform to the requirements of this specification may be rejected. Rejection should be reported to theproducer or supplier promptly and in writing. In case of dissatisfaction with the results of the tes
47、t, the producer or supplier maymake claim for a rehearing. If the rehearing establishes that the material does not conform to the requirements of this specification,as much of the rejected original material as possible shall be returned to the producer or supplier.9.2 For additional information see
48、Section 8 of Specification B949.10. Identification Marking10.1 All shot bags, bars, ingots, or jumbo ingots shall be properly marked for identification with the producers name or brand.10.2 For additional information see Section 10 of Specification B949.11. Preparation for Delivery11.1 See Section 1
49、0 of Specification B949.12. Keywords12.1 aluminum alloy hardener; aluminum-base master alloy; master alloy; V12; zinc-base master alloy; zinc die casting alloySUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue(B327-13)13a) that may impact the use of this standard. (Approved May 1, 2016August 1, 2013.).)(1) Specification B275 is referenced by a footnote in Tables 1 and 3 and is added to Section 2.The references to specific sectionsin Specification B949 were removed.(2) Alloy A07131 wa
