1、Designation: A101 04 (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 parenth
2、eses 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,
3、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 AST
4、M Standards:2A1025 Specification for Ferroalloys and Other AlloyingMaterials, General RequirementsE363 Test Methods for Chemical Analysis of Chromium andFerrochromium3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A102
5、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
6、, 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
7、 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
8、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 s
9、hall be agreed upon bythe purchaser and supplier.6.2 In cases 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
10、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 reference
11、d 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 Cons
12、hohocken, PA 19428-2959. United States1SUPPLEMENTARY 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 m
13、utually agreed upon by the manufacturer and the purchaser.TABLE 1 Chemical 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
14、A 60.067.0 0.025 max 1.08.0 0.025 0.030 . . .B 67.075.0 0.025 max 1.0 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
15、.0 0.10 max 1.0 max 0.025 0.030 1.05.0TABLE 2 Standard Sizes and TolerancesProduct 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. (1
16、50-mm) sieve5 in. (125 mm) by 2 in. (50 mm) 10 %, max, retained on 5-in. (125-mm) sieve 10 %, max, passing 2-in. (50-mm) sieve4 in. (100 mm) by12 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-
17、in. (75-mm) sieve 10 %, max, passing 1-in. (25-mm) sieve3 in. (75 mm) 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-
18、mm)sieveLow-carbon 8 in. (200 mm) by down 10 in. (250 mm), max 18 in. (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
19、-in. (75-mm) sieve 10 %, max, passing 1-in. (25-mm) sieve8 mesh (2.36 mm) by down 5 %, max, retained on U.S. No. 8 (2.36-mm)sieveVacuum lowcarbonbrick or pellet designated by manufacturer Editorially corrected.A101 04 (2014)12ASTM International takes no position respecting the validity of any patent
20、 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 entirely their own responsibility.This standard is subject to revision at
21、 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 standardsand should be addressed to ASTM International Headquarters. Your comment
22、s 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 on Standards, at the address shown below.This standard is copyrighted b
23、y 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
24、); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ S1.1 Supplementary Chemical RequirementsTypeComposition, max, %High Carbon Low Carbon V
25、acuum 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 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 0.050Columbi
26、um 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 0.10 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 0.0
27、05 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 (2014)13
