ASTM_A_101_-_04_2014e1.pdf

Designation:A10104(Reapproved 2014)1Standard Specification forFerrochromium1This standard is issued under the fixed designation A101;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made to Table 2 in April 2016.1.Scope1.1 This specification covers two types of ferrochromiumdesignated as high carbon and low carbon,the latter includingnitrogen-bearing and vacuum grades.1.2 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:2A1025 Specification for Ferroalloys and Other AlloyingMaterials,General RequirementsE363 Test Methods for ChemicalAnalysis of Chromium andFerrochromium3.General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A1025,including any supple-mentary requirements that are indicated in the purchase order.Failure to comply with the general requirements of Specifica-tion A1025 constitutes nonconformance with this specification.In case of conflict between the requirements of this specifica-tion and Specification A1025,this specification shall prevail.4.Chemical Composition4.1 The grades shall conform to the requirements as tochemical composition specified in Table 1.The manufacturershall furnish an analysis of each shipment showing the ele-ments specified in Table 1.5.Size5.1 The various grades are available in sizes as listed inTable 2.5.2 The sizes listed in Table 2 are typical,as shipped fromthe manufacturers plant.These alloys exhibit varying degreesof friability;therefore,some attrition may be expected intransit,storage,and handling.A quantitative test is not avail-able for rating relative friability of ferroalloys.A code systemhas been developed,therefore,for this purpose,and a numberrating for each product type is shown in the last column ofTable 2.Definitions applicable to these code numbers are givenin Specification A1025.6.Chemical Analysis6.1 The chemical analysis method shall be agreed upon bythe purchaser and supplier.6.2 In cases of discrepancy,Test Methods E363 shall beused for referee purposes.7.Keywords7.1ferroalloys;ferrochromium;high carbon;low carbon;nitrogen-bearing;vacuum low carbon1This specification is under the jurisdiction of ASTM Committee A01 on 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 A101 04(2009).DOI:10.1520/A0101-04R14E01.2For referenced ASTM standards,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 19428-2959.United States1 SUPPLEMENTARY REQUIREMENTSThe composition shall be limited to the requirements of Table S1.1 in addition to those in Table 1.Upon request of the purchaser,the manufacturer shall furnish an analysis for any of these elements ona cumulative basis over a period mutually agreed upon by the manufacturer and the purchaser.TABLE 1 Chemical RequirementsType FerrochromiumComposition,%GradeChromiumCarbonSiliconSulfur,maxPhosphorus,maxNitrogenHigh carbonABC51.056.056.062.062.0 min6.08.06.08.06.08.06.0 max8.014.03.0 max0.0400.0500.0500.0300.0300.030.Low carbonA60.067.00.025 max1.08.00.0250.030.B67.075.00.025 max1.0 max0.0250.030.C67.075.00.050 max1.0 max0.0250.030.D67.075.00.75 max1.0 max0.0250.030.Vacuum low carbonEG66.070.063.068.00.015 max0.050 max2.0 max2.0 max0.0300.0300.0300.030.5.06.5Nitrogen bearing62.070.00.10 max1.0 max0.0250.0301.05.0TABLE 2 Standard Sizes and TolerancesProductStandard SizesTolerancesFriabilityRatingsFerrochromium:High-carbon8 in.(200 mm)by 4 in.(100 mm)10 in.(250 mm),max10%,max,passing 4-in.(100-mm)sieve46 in.(150 mm)by down10%,max,retained on 6-in.(150-mm)sieve5 in.(125 mm)by 2 in.(50 mm)10%,max,retained on 5-in.(125-mm)sieve10%,max,passing 2-in.(50-mm)sieve4 in.(100 mm)by12in.(12.5 mm)10%,max,retained on 4-in.(100-mm)sieve10%,max,passing12-in.(12.5-mm)sieve3 in.(75 mm)by 1 in.(25 mm)10%,max,retained on 3-in.(75-mm)sieve10%,max,passing 1-in.(25-mm)sieve3 in.(75 mm)by14in.(6.3 mm)10%,max,retained on 3-in.(75-mm)sieve10%,max,passing14-in.(6.3-mm)sieve14in.(6.3 mm)by down5%,max,retained on14-in.(6.3-mm)sieve8 mesh(2.36 mm)by down5%,max,retained on U.S.No.8(2.36-mm)sieveLow-carbon8 in.(200 mm)by down10 in.(250 mm),max18 in.(200 mm)by 4 in.(100 mm)10%,max,retained on 8-in.(200