1、Designation: A482/A482M 11Standard Specification forFerrochrome-Silicon1This standard is issued under the fixed designation A482/A482M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parenthe
2、ses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers several grades of ferrochrome-silicon.1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded sep
3、arately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.2.1 This specification is expressed in both inch-poundunits and in
4、 SI units; however, unless the purchase order orcontract specifies the applicable M specification designation(SI units), the inch-pound units shall apply.1.2.2 Within the text, the SI units are shown in brackets.2. Referenced Documents2.1 ASTM Standards:2A1025 Specification for Ferroalloys and Other
5、 AlloyingMaterials, General RequirementsE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE364 Test Methods for Chemical Analysis of Ferrochrome-Silicon33. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of SpecificationA102
6、5, 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
7、, this specification shall prevail.4. Chemical Composition4.1 The various grades shall conform to the requirements asto chemical composition specified in Tables 1 and 2.4.2 The manufacturer shall furnish an analysis of eachshipment showing the percentage of each element specified inTable 1.4.3 The v
8、alues shown in Table 2 are expected maximums.Upon request of the purchaser, the manufacturer shall furnish1This 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
9、 approved May 1, 2011. Published June 2011. Originallyapproved in 1963. Last previous edition approved in 2010 as A482 05 (2010).DOI: 10.1520/A0482_A0482M-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of A
10、STMStandards 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.TABLE 1 Chemical RequirementsElementComposition, %Grade A Grade BChromium 34.038.0 38.042.0Carbon, max 0.060
11、 0.050Silicon 38.042.0 41.045.0Sulfur, max 0.030 0.030Phosphorus, max 0.030 0.030TABLE 2 Supplementary Chemical RequirementsComposition, max, percentElement Ferrochrome-Silicon (Grades Aand B)Nitrogen 0.050Manganese 0.75Nickel 0.50Vanadium 0.50Copper 0.050Molybdenum 0.050Columbium 0.050Tantalum 0.05
12、0Cobalt 0.10Aluminum 0.50Titanium 0.50Zirconium 0.050Arsenic 0.005Lead 0.005Tin 0.005Zinc 0.005Boron 0.005Antimony 0.005Silver 0.005Bismuth 0.0051*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
13、19428-2959, United States.an analysis for any of these elements on a cumulative basisover a period mutually agreed upon between the manufacturerand the purchaser.5. Size5.1 The various grades are available in sizes as listed inTable 3.5.2 The sizes listed in Table 3 are typical as shipped fromthe ma
14、nufacturers 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 n
15、umberrating each product type is shown in the last column of Table3. Definitions applicable to these code numbers are given inSpecification A1025.6. Chemical Analysis6.1 The chemical analysis of the material shall be made inaccordance with the procedure for the ferroalloys as describedin Test Method
16、s E364, or alternative methods, agreed upon bythe purchaser and supplier, that will yield equivalent results.6.2 If alternative methods of analysis are used, in case ofdiscrepancy, Test Methods E364 shall be used for reference.6.3 Where a method is not given in Test Methods E364 forthe analysis of a
17、 particular element, the analysis shall be madein accordance with a procedure agreed upon between themanufacturer and the purchaser.7. Keywords7.1 ferrochrome; ferrochrome siliconTABLE 3 Standard Sizes and TolerancesProduct Standard Sizes TolerancesAFerrochrome-Silicon 75 lb 35 kg by down Maximum lu
18、mp weight -90 lb 40 kg.The maximum allowed proportionof lump weight75 lb 35 kg is 10%75 lb 35 kg by 1 in. 25 mm Maximum lump weight -90 lb 40 kgMaximum allowed weightpassing 1-in. 25 mm sieveis 10% of the total weight75 lb 35 kg by 2 in. 50 mm Maximum lump weight -90 lb 40 kgMaximum allowed weightpa
19、ssing 2-in. 50 mm sieveis 10% of the total weight40 lb 18 kg by down Maximum lump weight -50 lb 23 kg25 lb 10 kg by down Maximum lump weight -30 lb 14 kg4 in. 100 kg by down 10% Maximum weightretained on 4-in. 100 mm sieveis 10% of the total weight3 in. 75 mm by down Maximum weightretained on 3 in.
20、75 mmsieve is 10% of the total weight3 by 1/2 in. 75 by 15 mm Maximum weightretained on 3-in. 75 mm sieveis 10% of the total weightMaximum allowed weightpassing in. 15 mm sieveis 10% of the total weight2 in. 50 mm by down Maximum weightretained on 2-in. 50 mm sieveis 10% of the total weight2 by 1/4
21、in. 50 by 5 mm Maximum weightretained on 2-in. 50 mm sieveis 10% of the total weightMaximum allowed weightpassing in. 5 mm sieveis 10% of the total weight3/4 in. 20 mm by down Maximum weightretained on 3/4 in. 20 mm sieveis 10% of the total weightASpecifications of sieve sizes used to define toleran
22、ces herein are as listed in Specification E11.A482/A482M 112SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue (A482 05(2010) that may impact the use of this standard. (Approved May 1, 2011.)(1) Added section 1.2, revised Table 3.AST
23、M International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are en
24、tirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsa
25、nd should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee
26、on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A482/A482M 113
