1、Designation: A 324 08Standard Specification forFerrotitanium1This standard is issued under the fixed designation A 324; 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 th
2、e year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers four grades of ferrotitanium,designated A, B, C, and D.2. Referenced Documents2.1 ASTM Standards:2A 1025 Specification for Ferroalloys and Ot
3、her AlloyingMaterials, General Requirements3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A 1025, including anysupplementary requirements that are indicated in the purchaseorder. Failure to comply with the general req
4、uirements ofSpecification A 1025 constitutes nonconformance with thisspecification. In case of conflict between the requirements ofthis specification and Specification A 1025, this specificationshall prevail.4. Chemical Requirements4.1 The chemical requirements are shown in Tables 1 and 2.5. Size5.1
5、 The various grades are available in sizes as listed inTable 3.5.2 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 test is not
6、 avail-able for rating relative friability of ferroalloys. A code systemhas been developed, for this purpose, and a number rating eachproduct type is shown in the last column of Table 4. Definitionsapplicable to these code numbers are given in SpecificationA 1025.6. Chemical Analysis6.1 The chemical
7、 analysis of the material shall be inaccordance with a procedure agreed upon between the manu-facturer and the purchaser.7. Keywords7.1 ferrotitanium1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Sub
8、committeeA01.18 on Castings.Current edition approved March 1, 2008. Published April 2008. Originallyapproved in 1949. Last previous edition approved in 2004 as A 32473(2004).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For
9、Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*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 19428-2959, United States.SUMMAR
10、Y OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue (A 324-73(2004) that may impact the use of this standard. (Approved March 1, 2008.)(1) Section 2: Reference standards E 29 and E 32 deleted.A 1025 added.(2) Section 3: Title change and tex
11、t to reflect inclusion ofA 1025.(3) Section 4: Title and text change to identify Table 1 andTable 2 only for chemical requirements.(4) Section 5: Title change and reference to A 1025 included.(5) Section 6: Former content deleted due to inclusion ofA 1025. New title added.(6) Sections 7 9: Former co
12、ntent deleted due to inclusion ofA 1025. Keywords section added.(7) Table 1: Footnotes deleted.(8) Table 2: Chemical symbols used in place of names.Footnote A shortened.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin
13、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 any time by the responsible technical committee and must
14、 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 comments will receive careful consideration at a meeting of ther
15、esponsible 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 by ASTM International, 100 Barr Harbor Drive, PO Box C700,
16、 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).TABLE 1 Chem
17、ical RequirementsGradeComposition, %Titanium Carbon, max Silicon, max Aluminum, maxA 65.075.0 0.15 0.25 0.50B 65.075.0 0.20 0.25 5.0C 35.045.0 0.15 5.0 8.0D 15.025.0 5.0 5.0 8.0TABLE 2 Supplementary Chemical RequirementsGrade Composition, %AMn P S Cr Ni Mo Cu Co V Pb As Bi Sn Zn Zr B NA 0.50 0.050 0
18、.050 1.0 0.050 0.050 0.15 0.030 0.50 0.010 0.010 0.010 0.050 0.010 0.10 0.010 0.15B 1.5 0.050 0.050 1.0 0.050 0.25 0.20 0.050 1.5 0.030 0.010 0.010 0.050 0.020 0.50 0.020 0.20C 1.5 0.10 0.050 1.0 0.050 0.25 0.20 0.050 1.5 0.030 0.010 0.010 0.050 0.020 0.50 0.020 0.20D 1.5 0.10 0.050 1.0 0.050 0.25 0
19、.20 0.050 1.5 0.050 0.010 0.010 0.050 0.020 0.50 0.020 0.20AMaximum limits.TABLE 3 Size Requirements (All Grades)Category Tolerances2 in. (50 mm) by down 10 %, max retained on USA Standard 2 in. (50 mm) Sieve10 %, max passing USA Standard No. 20 (850 m) Sieve1 in. (25 mm) by down 10 %, max retained
20、on USA Standard 1 in. (25.0 mm) Sieve10 %, max passing USA Standard No. 20 (850 m) Sieve12 in. (12.5 mm) by down 10 %, max retained on USA Standard12 in. (12.5 mm) Sieve15 %, max passing USA Standard No. 30 (600 m) Sieve8 M (2.36 mm) by down 10 %, max retained on USA Standard No. 8 (2.36 mm) Sieve10 %, max passing USA Standard No. 200 (75 m) SieveTABLE 4 Friability RatingAll grades Number 3A324082
