1、Designation: A101 04 (Reapproved 2009)Standard 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 parenthe
2、ses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.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
3、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
4、AlloyingMaterials, General RequirementsE363 Test Methods for Chemical Analysis of Chromiumand Ferrochromium3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of SpecificationA1025, including any supple-mentary requirements that are indica
5、ted 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.
6、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
7、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,
8、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 case
9、s of discrepancy, Test Methods E363 shall beused for referee purposes.7. Keywords7.1 ferroalloys; 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 direc
10、t responsibility of SubcommitteeA01.18 on Castings.Current edition approved Oct. 1, 2009. Published January 2010. Originallyapproved in 1925. Last previous edition approved in 2004 as A101 04. DOI:10.1520/A0101-04R09.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact AST
11、M Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.SUPPLEMENTARY REQUIREMENTSThe
12、 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 Ch
13、emical RequirementsType FerrochromiumComposition, %Grade Chromium Carbon SiliconSulfur,maxPhosphorus,maxNitrogenHigh carbon ABC51.056.056.062.062.0 min6.08.06.08.06.08.06.0 max8.014.03.0 max0.0400.0500.0500.0300.0300.030.Low carbon A 60.067.0 0.025 max 1.08.0 0.025 0.030 . . .B 67.075.0 0.025 max 1.
14、0 max 0.025 0.030 . . .C 67.075.0 0.050 max 1.0 max 0.025 0.030 . . .D 67.075.0 0.75 max 1.0 max 0.025 0.030 . . .Vacuum low carbon EG66.070.063.068.00.015 max0.050 max2.0 max2.0 max0.0300.0300.0300.030.5.06.5Nitrogen bearing 62.070.0 0.10 max 1.0 max 0.025 0.030 1.05.0TABLE 2 Standard Sizes and Tol
15、erancesProduct Standard Sizes TolerancesFriabilityRatingsFerrochromium:High-carbon 8 in. (200 mm) by 4 in. (100 mm) 10 in. (250 mm), max 10 %, max, passing 4-in. (100-mm) sieve 46 in. (150 mm) by down 10 %, max, retained on 6-in. (150-mm) sieve5 in. (125 mm) by 2 in. (50 mm) 10 %, max, retained on 5
16、-in. (125-mm) sieve 10 %, max, passing 2-in. (50-mm) sieve4 in. (100 mm) by in. (12.5 mm) 10 %, max, retained on 4-in. (100-mm) sieve 10 %, max, passing12-in. (12.5-mm) sieve3 in. (75 mm) by 1 in. (25 mm) 10 %, max, retained on 3-in. (75-mm) sieve 10 %, max, passing 1-in. (25-mm) sieve3 in. (75 mm)
17、by14 in. (6.3 mm) 10 %, max, retained on 3-in. (75-mm) sieve 10 %, max, passing14-in. (6.3-mm) sieve14 in. (6.3 mm) by down 5 %, max, retained on14-in. (6.3-mm) sieve8 mesh (2.36 mm) by down 5 %, max, retained on U.S. No. 8 (2.36-mm)sieveLow-carbon 8 in. (200 mm) by down 10 in. (250 mm), max 18 in.
18、(200 mm) by 4 in. (100 mm) 10 %, max, retained on 8-in. (200-mm) sieve 5 %, max, passing 4-in. (100-mm) sieve4 in. (100 mm) by down 10 %, max, retained on 4-in. (100-mm) sieve3 in. (75 mm) by 1 in. (25 mm) 10 %, max, retained on 3-in. (75-mm) sieve 10 %, max, passing 1-in. (25-mm) sieve8 mesh (2.36
19、mm) by down 5 %, max, retained on U.S. No. 8 (2.36-mm)sieveVacuum lowcarbonbrick or pellet designated by manufacturerA101 04 (2009)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard
20、 are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are 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 n
21、ot revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which
22、 you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee 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,Uni
23、ted 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
24、also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE S1.1 Supplementary Chemical RequirementsTypeComposition, max, %High Carbon Low Carbon Vacuum Low CarbonANitrogen BearingGrade A, B C All Grades E G Nitrogen 0.050 0.050 0.12 0.050Manganese 0.75 0.75 0.75 0.75 0.75 0.75Nickel 0.50
25、0.50 0.50 0.50 0.50 0.50Vanadium 0.50 0.50 0.50 0.50 0.50 0.50Copper 0.050 0.050 0.050 0.050 0.050 0.050Molybdenum 0.050 0.050 0.050 0.050 0.050 0.050Columbium 0.050 0.050 0.050 0.050 0.050 0.050Tantalum 0.050 0.050 0.050 0.050 0.050 0.050Cobalt 0.10 0.10 0.10 0.10 0.10 0.10Aluminum 0.25 0.25 0.10 0
26、.10 0.10 0.10Titanium 0.50 0.30 0.050 0.050 0.050 0.050Zirconium 0.050 0.050 0.01 0.01 0.01 0.01Antimony 0.01 0.01 0.01 0.01 0.01 0.01Arsenic 0.005 0.005 0.005 0.005 0.005 0.005Lead 0.005 0.005 0.005 0.005 0.005 0.005Tin 0.005 0.005 0.005 0.005 0.005 0.005Zinc 0.005 0.005 0.005 0.005 0.005 0.005Boron 0.005 0.005 0.005 0.005 0.005 0.005Silver 0.005 0.005 0.005 0.005 0.005 0.005Bismuth 0.005 0.005 0.005 0.005 0.005 0.005AThe inert oxide (SiO2+ CaO + MgO + Al2O3) content of vacuum low-carbon ferrochromium shall be specified as 3.50 % max.A101 04 (2009)3
