1、Designation: B327 12B327 13Standard 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 re
2、vision. 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 sp
3、ecified 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 ratios
4、, 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, ingot
5、 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 to
6、 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) for this product/material as provided by the manufacturer, to
7、establish appropriate safety and health practices, anddetermine 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 ASTM Sta
8、ndards:2B6 Specification for ZincB899 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 Alloy ProductsE29 Practice for Using Significant Digits in Test Data to Determ
9、ine 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 CompositionE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UN
10、S)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 1: Analysis of solid samples by optical emission spectrometryISO 3815-2 Zinc an
11、d 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 responsibility of Subcommittee B02.04 on Zincand Cadmium.Current edition approved May 1, 20
12、12Feb. 1, 2013. Published July 2012March 2013. Originally approved in 1958. Last previous edition approved in 20092012 as B327 0912.1. DOI: 10.1520/B0327-12.10.1520/B0327-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For A
13、nnual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only
14、 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 recommends that users consult prior editions as appropriate. In all cases only the current versio
15、nof 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, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 Terms shall be defined
16、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.4. Ordering Information4.1 Orders for master alloys under this specification shall inclu
17、de the following information:4.1.1 Alloy (Table 1 or Table 2),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 valueor calculated value obtaine
18、d 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,maxManga-nese,maxMagnesiumA ZincChro
19、-mium,maxNickel,maxTin,maxLead,maxACad-mium,maxAZG71A 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, 21parts by weight of Special HighGrade zincB to make ASTMzinc Alloy Z33520 (AG40A)Editorially corrected.TABLE 1 Chemical Requirements for Aluminum-Bas
20、e Master AlloysNOTE 1The following applies to all specified limits in this table: For purposes of determining conformance with this specification, the observed valueor calculated value obtained from analysis shall be rounded off “to the nearest unit” in the last right hand place of figures used in e
21、xpressing the specifiedlimit, in accordance with the rounding method of Practice E29.ASTMAlloy(UNS)Composition, percentUsageAlu-minum,minCopper Iron,max Silicon,maxManga-nese,maxMagnesiumA ZincChro-mium,maxNickel,maxTin,maxLead,maxACad-mium,maxAZG71A(A07131)87.0 1.7 max 0.8 0.7 0.50 0.651.05 6.57.5
22、0.20 0.20 0.02 0.020 0.010 1 part by weight of ZG71A, 21parts by weight of Special HighGrade zincB to make ASTMzinc Alloy Z33524 (AG40A)A Carried to one additional decimal place to ensure proper control in the final alloy.B ASTM Specification B6, for Zinc.TABLE 2 Chemical and Color Code Requirements
23、 for Zinc-Base Master AlloysA,B,CCommon(UNS)ColorCodeDAluminumMagnesiumIronmax.Coppermax.Leadmax.Cadmiummax.Tinmax.ZincV12-3(Z33730)Pink11.712.60.0900.160.0700.250.0050.0040.003RemainderV125(Z- - - - -)Pink/Black11.712.60.0900.160.0702.13.30.0050.0040.003RemainderV125(Z35740)TABLE 3 Weight Requireme
24、nts 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 ingot), 2 parts by weight (two 2400 l
25、b jumbo ingots) of Special HighGrade zinc to make zinc alloy 3 (Zamak 3, UNS Z33520, AG40A)2400 2325 2475 1 part by weight of V12-3 (one 2400 lb jumbo ingot), 2 parts by weight (two 2400 lb jumbo ingots) of Special HighGrade zinc to make zinc alloy 3 (Zamak 3, UNS Z33524, AG40A)or1 part by weight of
26、 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 Z35531, AC41A)1 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 (
27、Zamak 5, UNS Z35532, AC41A)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 Z33520, AG40A)1200 1150 1250 1 part by weight of V12-3 (one 1200 lb jumbo ingot), 2 parts by weight
28、(one 2400 lb jumbo ingot) of Special High Gradezinc to make zinc alloy 3 (Zamak 3, UNS Z33524, AG40A)or1 part by weight of V12-5 (one 1200 lb jumbo ingot), 2 parts by weight (one 2400 lb jumbo ingot) of Special High Gradezinc to make zinc alloy 5 (Zamak 5, UNS Z35531, AC41A)1 part by weight of V12-5
29、 (one 1200 lb jumbo ingot), 2 parts by weight (one 2400 lb jumbo ingot) of Special High Gradezinc to make zinc alloy 5 (Zamak 5, UNS Z35532, AC41A)A Jumbo ingots outside the above weight limits may be acceptable depending upon the chemistry, if mutually agreed upon between the producer and purchaser
30、.B327 1324.1.2 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: that is, nominal weight of shot per bag or nominal weight of each bar, ingot, or jumbo ingot,4.1.5 Markings on shot bags, bars, ingot or jumbo
31、 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 material may be made by any suitable process.5.2 The mater
32、ial 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 coating,stringers, and moisture.6. Chemical Requirements6.1
33、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 shallconform to the requirements as prescribed in Table 3.6.2
34、 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 than five samples shall be taken at random fromthe carload f
35、or 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 taken from each melt of 500 lb (227 kg) or more of the alloy.6
36、.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 case of metal in shot form, a small representative lot of th
37、e 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 used to cast the jumboingots.6.3 Methods of SamplingSample
38、s 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 piece or pieces to obtain a weight of prepared sample not
39、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 shall be suitable for the form of material being analyzed an
40、d 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 spectrographic or chemical analysis, or both.6.3.2.2 Samples may also
41、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 described in 6.3.2.2.6.4 Method of AnalysisThe determinati
42、on 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 Method E1251) or other methods. In case of dispute, the result
43、s 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 3815-2 is not specific for zinc-base master alloy, but may b
44、eused 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 upon betweenthe producer and purchaser.7. Size and Shape7.
45、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.B327 1337.2.1 The weight of zinc master alloy jumbo ingots is important because th
46、ey 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.8. Source Inspection8.1 See Section 9 of Specification B949.9. Rejection
47、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 test, the producer or supplier maymake claim for a rehearing.
48、 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 Section 8 of Specification B949.10. Identification Marking
49、10.1 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 10 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 12)that may impact th
