1、Designation:A9903(Reapproved 2014)Standard Specification forFerromanganese1This standard is issued under the fixed designationA99;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indica
2、tes the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers ten grades of ferromanganese,designated as follows:Standard ferromanganeseGrade AGrade BGrade CMedium-carbon ferromanganeseGrades A,B,C,and DN
3、itridedLow-carbon ferromanganeseGrade AGrade B1.2 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 ASTM Standards
4、:2A1025/A1025M Specification for Ferroalloys and Other Al-loying Materials,General RequirementsE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A1025/A1025M
5、,includingany supplementary requirements that are indicated in thepurchase order.Failure to comply with the general require-ments of Specification A1025/A1025M constitutes nonconfor-mance with this specification.In case of conflict between therequirements of this specification and Specification A102
6、5/A1025M,this specification shall prevail.4.Chemical Composition4.1 The material shall conform to the requirements as tochemical composition specified in Table 1.4.2 The manufacturer shall furnish an analysis of eachshipment showing the percentage of each element specified.5.Size5.1 The various grad
7、es are available in sizes as listed inTable 2.5.2 The sizes and friability ratings listed in Table 2 aretypical as shipped from the manufacturers plant.These alloysexhibit varying degrees of friability;therefore,some attritionmay be expected in transit,storage,and handling.A codesystem has been deve
8、loped.Therefore,for this purpose,anumber rating for each product type is shown in the lastcolumn of Table 2.Definitions applicable to these codenumbers are given in Specification A1025/A1025M.6.Keywords6.1 ferroalloy;ferromanganese1This specification is under the jurisdiction of ASTM Committee A01 o
9、n Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved Oct.1,2014.Published October 2014.Originallyapproved in 1925.Last previous edition approved in 2009 as A99 03(2009).DOI:10.1520/A0099-03R14.2For referenced ASTM stan
10、dards,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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2
11、959.United States1 SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall apply only when specified by the purchaser in thepurchase order or contract.S1.Chemical RequirementsThe composition shall be further limited to the requirementsof Table S1.1 in addition to those of Table 1.Th
12、e manufacturershall furnish an analysis of each shipment showing the per-centage of the elements specified.TABLE 1 Chemical RequirementsStandard FerromanganeseMedium Carbon FerromanganeseNitridedMediumCarbonFerroman-ganeseLow Carbon Ferro-manganeseGrade AGrade BGrade CGrade AGrade BGrade CGrade DGra
13、de AGrade BManganese,%78.0 to76.0 to74.0 to80.0 to80.0 to80.0 to80.0 to75 to 80A85.0 to80.0 to82.078.076.085.085.085.085.090.085.0Carbon,max,%7.57.57.51.51.51.51.51.5AAs speci-0.75fiedSilicon,max,%1.21.21.21.51.00.700.351.5A2.05.0 to7.0Phosphorus,max,%0.350.350.350.300.300.300.300.30.200.30Sulfur,ma
14、x,%0.0500.0500.0500.0200.0200.0200.0200.0200.0200.020Nitrogen,%4%minABased on metallic content.TABLE 2 Standard Sizes and TolerancesProductStandard SizesTolerancesAFriabilityRatingStandardferromanganeseGrades A,B,C8 4 in.(200 100 mm)90 lb(40.8-kg)lump,max10%max passing 4-in.(100-mm)sieve45 x 2 in.(1
15、25 50 mm)10%max retained on 5-in.(125-mm)sieve10%max passing 2-in.(50-mm)sieve4 1 in.(100 25 mm)10%max retained on 4-in.(100-mm)sieve10%max passing 1-in.(25-mm)sieve2 14in.(50 6.3 mm)10%max retained on 2-in.(50-mm)sieve10%max passing14-in.(6.3-mm)sieve38in.12 mesh(9.5 1.4 mm)5%max retained on38-in.(
16、9.5-mm)sieve5%max passing No.14(1.4-mm)sieve14in.down(6.3 mm down)5%max retained on14-in.(6.3-mm)sieve8 mesh down(2.36 mm down)5%max retained on No.8(2.36-mm)sieve20 mesh down(0.85 mm down)5%max retained on No.20(0.85 mm)sieveMedium-carbonferromanganeseGrades A,B,C,and D8 4 in.(200 100 mm)90-lb(40.8-kg)lump,max10%max passing 4-in.(100-mm)sieve4125 2 in.(125 50 mm)10%max retained on 5-in.(125-mm)sieve10%max passing 2-in.(50-mm)sieve4 in.down(100 mm down)10%max retained on 4-in.(100-mm)sieve12%max
