1、Designation: C 861 93 (Reapproved 2005)Standard Practice forDetermining Metric Dimensions of Standard SeriesRefractory Brick and Shapes1This standard is issued under the fixed designation C 861; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers dimensions in millimetres forstandard series refractory brick and shapes
3、 of all compositions.1.2 A standard method for converting all other dimensionsof shaped refractory articles from inch-pound to SI units isincluded.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 A
4、STM Standards:2IEEE/ASTM SI 10 American National Standard for Use ofthe International System of Units (SI): The Modern MetricSystem3. Significance and Use3.1 This practice is provided in the interest of facilitating thetransition of dimensional practice for standard refractory brickand shapes from i
5、nch-pound units to metric (SI) units.3.2 The standard dimensions are based on a 38-mm module(taken as the equivalent to 1.5 in.) and are developed with theaim of preserving a modular relationship between the dimen-sions of the principal rectangular refractory shapes.4. Standard Dimensions4.1 Table 1
6、 lists the standard nominal dimensions in milli-metres, with corresponding standard dimensions in inch-poundunits shown for reference only. Note that these dimensions arenot exact conversions, but in all but two cases are within14 %of the exact value.5. Conversion5.1 For dimensions not listed in Tab
7、le 1, multiply thedimension in inches by the factor 25.4 to obtain the exactconversion in millimetres. For description or specification ofrefractory shapes, round the dimension to the nearest wholemillimetre. For example:1 in. 3 25.4 = 25.4 mm, expressed as 25 mm11 in. 3 25.4 = 279.4 mm, expressed a
8、s 279 mm2212 in. 3 25.4 = 571.5 mm, expressed as 572 mm6. Standard Equivalent6.1 For closest approximation to inch-pound units, themetric (SI) Standard Equivalent is based upon the 228 by 114by 64-mm straight. One Standard Equivalent thus contains1.6635 dm3(101.51 in.3).NOTE 1For comparison, the Sta
9、ndard Equivalent in inch-pound unitsis based on the 9 by 412 by 212-in. straight and thus contains 101.25 in.3,or 1.6592 dm3. The difference, 0.0043 dm3(0.26 in.3), amounts to a0.26 % increase over the older value.1This practice is under the jurisdiction of ASTM Committee C08 on Refracto-ries, and i
10、s the direct responsibility of Subcommittee C08.92, The Joseph E.Kopanda Subcommittee for Editorial, Terminology and Classification.Current edition approved Dec. 1, 2005. Published January 2006. Originallyapproved in 1971. Last previous edition approved in 2000 as C 861 93 (2000).2For referenced AST
11、M 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoho
12、cken, 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 validity of any such patent rights, and the risk
13、of 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 comments are invited either for revision of this
14、 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 have not received a fair hearing you shouldmake y
15、our 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 copies) of this standard may be obtained by c
16、ontacting 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 Standard Dimensions for Refractory Brick and ShapesIn. Committee C08, mm ISO,Amm, min114 32 32112 38 38212 64 6437676412 114 1146 152 150634 171 1729 228 23012 304 3001312 342 34515 380 . . .18 456 . . .AInternational Standards Organization.C 861 93 (2005)2
