1、Designation: A 324 73 (Reapproved 2004)Standard 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 parent
2、heses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers four grades of ferrotitanium,designated A, B, C, and D.2. Referenced Documents2.1 ASTM Standards:2E 29 Practice for Using Si
3、gnificant Digits in Test Data toDetermine Conformance with SpecificationsE 32 Practices for Sampling Ferroalloys and Steel Additivesfor Determination of Chemical Composition3. Ordering Information3.1 The material furnished under this specification shall becrushed to the specified size, and mixed bef
4、ore packaging, sothat the quality in each package is uniform with the lot.3.2 The reported percentage of titanium as obtained bychemical analysis shall be used to determine the billing of thematerial to the purchaser.4. Chemical Composition4.1 The various grades shall conform to the requirements ast
5、o chemical composition prescribed in Tables 1-4.5. Chemical Analysis5.1 The chemical analysis of the material shall be made inaccordance with a procedure agreed upon between the manu-facturer and the purchaser.6. Sampling6.1 The material shall be sampled in accordance withPractices E 32.7. Inspectio
6、n7.1 The inspector representing the purchaser shall have freeentry, at all times while work on the contract of the purchaseris being performed, to all parts of the manufacturers worksthat concern the sampling, packaging, and shipping of materialordered. The manufacturer shall afford the inspector al
7、l rea-sonable facilities, without charge, to satisfy him that thematerial is being furnished in accordance with this specifica-tion.7.2 If the purchaser so elects, the material may be sampledby him at the destination, in which case at least 10 % of theshipment shall be sampled.8. Rejection8.1 Any cl
8、aims or rejections based on check analysis shallbe made to the manufacturer within 45 days from receipt ofmaterial by the purchaser.9. Packaging9.1 Ferrotitanium shall be packaged in sound containers insuch manner that none of the metal is lost in shipment.1This specification is under the jurisdicti
9、on of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved Oct. 1, 2004. Published October 2004. Originallyapproved in 1949. Last previous edition approved in 2000 as A 324 73 (2000).2For reference
10、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.TABLE 1 Chemical RequirementsAGradeComposition, %TitaniumBCarbon, max Silic
11、on, 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 8.0AFor purposes of determining conformance with these specifications, thereported analysis shall be rounded to the nearest unit in the last right-hand placeof figures used in expressing t
12、he limiting value, in accordance with the roundingmethod of recommended Practice E 29.BFor purposes of determining the titanium content of any shipment, titaniumshall be reported to the nearest 0.01 %, applying the same rounding procedure asprescribed in Footnote A.1Copyright ASTM International, 100
13、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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 va
14、lidity 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 not revised, either reapproved or withdrawn. Your co
15、mments 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 you may attend. If you feel that your comments hav
16、e 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,United States. Individual reprints (single or multiple
17、 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 2 Supplementary Chemical RequirementsGrade Composition, %AManga-nesePhos-phorusSulfur Chro-miu
18、mNickel Molyb-denumCopper Cobalt Vana-diumLead Arsenic Bismuth Tin Zinc Zirco-niumBoron NitrogenA 0.50 0.050 0.050 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 0.05
19、0 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 0.20 0.050 1.5 0.050 0.010 0.010 0.050 0.020 0.50 0.020 0.20AMaximum limits allowable unless otherwise stated.TABLE 3 Size Requirements (All Grades)Category Tolerances2 in. (50 mm) by down 10
20、 %, 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 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 3A 324 73 (2004)2
