1、Designation: A 323 05Standard Specification forFerroboron1This standard is issued under the fixed designation A 323; 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 the y
2、ear 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 ferroboron.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are
3、forinformation only.2. Referenced Documents2.1 ASTM Standards:2A 1025 Specification for Ferroalloys, General Require-mentsE 371 Test Method for the Determination of Boron inFerroboron3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of S
4、pecification A 1025, including anysupplementary requirements 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 Specif
5、ication A 1025, this specificationshall prevail.4. Chemical Composition4.1 The various grades shall conform to the requirements asto chemical composition specified in Table 1. The manufac-turer shall furnish an analysis of each lot showing the percent-age of each element specified.5. Sizing5.1 Ferro
6、boron is available in various sizes such as: 2 in.(50.8 mm) by down, 1 in. (25.4 mm) by down,14 in. (6.35 mm)by down, and 20 mesh (0.841 mm) by down. The size shall beas specified in the order.6. Chemical Analysis6.1 The chemical analysis of the material shall be made inaccordance with Test Method E
7、 371. Where a method is notgiven in Test Method E 371 for the analysis for a particularelement, the analysis shall be made in accordance with aprocedure agreed upon by the manufacturer and purchaser.7. Keywords7.1 ferroboron1This specification is under the jurisdiction of ASTM Committee A01 on Steel
8、,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1949. Last previous edition approved in 2004 as A 323 - 93 (2004).2For referenced ASTM standards, visit the ASTM webs
9、ite, 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 RequirementsComposition, %Grade BoronACarbon Silicon Aluminummin max max max maxA1 12.0 14.0 1.
10、5 2.0 0.5A2 12.0 14.0 1.5 2.0 4.0B1 17.5 19.0 1.5 2.0 0.5B2 17.5 19.0 1.5 2.0 4.0C1 19.0 24.0 1.5 2.0 0.5C2 19.0 24.0 1.5 2.0 4.0ABoron shall be reported to the nearest 0.1 %.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Bo
11、x C700, West Conshohocken, PA 19428-2959, United States.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue,A 323 - 93(2004), that may impact the use of this standard. (Approved May 1, 2005.)(1) Sections 1-10 were either modified or d
12、eleted.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 righ
13、ts, 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 comments are invited either for revision of this standard or for additional
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15、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 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).A323052
