1、Designation: A 482 05Standard Specification forFerrochrome-Silicon1This standard is issued under the fixed designation A 482; 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 indica
2、tes the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers several grades of ferrochrome-silicon.2. Referenced Documents2.1 ASTM Standards:2A 1025 Specification for Ferroalloys, General Require-
3、mentsE11 Specification for Wire Cloth and Sieves for TestingPurposesE 364 Test Methods for ChemicalAnalysis of Ferrochrome-Silicon3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A 1025, including anysupplementary requi
4、rements that are indicated in the purchaseorder. Failure to comply with the general requirements ofSpecification A 1025 constitutes nonconformance with thisspecification. In case of conflict between the requirements ofthis specification and Specification A 1025, this specificationshall prevail.4. Ch
5、emical 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 values shown in Table 2 are expected maxi
6、mums.Upon request of the purchaser, the manufacturer shall furnishan 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 3.1This specification is un
7、der 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 May 2005. Published May 1, 2005. Originallyapproved in 1963. Last previous edition approved in 2004 as A 482 93 (2004).2
8、For 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.TABLE 1 Chemical RequirementsElementComposition, %Grade A Grad
9、e BChromium 34.038.0 38.042.0Carbon, max 0.060 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 0.0
10、50Molybdenum 0.050Columbium 0.050Tantalum 0.050Cobalt 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 Har
11、bor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 The sizes listed in Table 3 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 te
12、st is not avail-able for rating relative friability of ferroalloys. A code systemhas been developed, therefore, for this purpose, and a numberrating each product type is shown in the last column of Table3. Definitions applicable to these code numbers are given inSpecification A 1025.6. Chemical Anal
13、ysis6.1 The chemical analysis of the material shall be made inaccordance with the procedure for the ferroalloys as describedin Test Methods E 364, or alternative methods, agreed upon bythe purchaser and supplier, that will yield equivalent results.6.2 If alternative methods of analysis are used, in
14、case ofdiscrepancy, Test Methods E 364 shall be used for reference.6.3 Where a method is not given in Test Methods E 364 forthe analysis of a particular element, the analysis shall be madein accordance with a procedure agreed upon between themanufacturer and the purchaser.7. Keywords7.1 ferrochrome;
15、 ferrochrome siliconSUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue,A 482 - 93(2004), that may impact the use of this standard. (Approved May 1, 2005.)(1) Sections 1-10 were either modified or deleted. (2) Appendix X1 was deleted.
16、ASTM 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
17、 entirely 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 standar
18、dsand 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 Committ
19、ee 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
20、or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 3 Standard Sizes and TolerancesProduct Standard Sizes TolerancesAFerrochrome-Silicon 75 lb by down75 lb by 1 in. (25.4 mm)90 lb lump, max90 lb lump, max 10% max, passing 1-in.
21、 (25.0-mm) sieve75 lb by 2 in. (50.8 mm) 90 lb lump, max 10% max, passing 2-in. (50-mm) sieve40 lb by down25 lb by down4 in. (101.6 mm) by down50 lb lump, max30 lb lump, max10% max, retained on 4-in. (100-mm) sieve3 in. (76.2 mm) by down 10% max, retained on 3 in. (75-mm) sieve3by12 in. (76.2 by 12.
22、7 mm) 10% max, retained on 3-in. (75-mm) sieve 10% max, passing12 in. (12.5 mm) sieve2 in. (50.8 mm) by down 10% max, retained on 2-in. (50-mm) sieve2by14 in. (50.8 by 6.35 mm) 10% max, retained on 2-in. (50-mm) sieve 10% max, passing14 in. (6.3-mm) sieve34 in. (19.05 mm) by down 10% max, retained on34 in. (19.0-mm) sieveASpecifications of sieve sizes used to define tolerances herein are as listed in Specification E11.A482052
