Standard Practice for Determining Metric Dimensions of Standard Series Refractory Brick and Shapes

SIGNIFICANCE AND USE
This practice is provided in the interest of facilitating the transition of dimensional practice for standard refractory brick and shapes from inch-pound units to metric (SI) units.  
The standard dimensions are based on a 38-mm module (taken as the equivalent to 1.5 in.) and are developed with the aim of preserving a modular relationship between the dimensions of the principal rectangular refractory shapes.
SCOPE
1.1 This practice covers dimensions in millimetres for standard series refractory brick and shapes of all compositions.  
1.2 A standard method for converting all other dimensions of shaped refractory articles from inch-pound to SI units is included.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

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Historical
Publication Date
31-Oct-2010
Current Stage
Ref Project

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ASTM C861-93(2010) - Standard Practice for Determining Metric Dimensions of Standard Series Refractory Brick and Shapes
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C861 − 93(Reapproved 2010)
Standard Practice for
Determining Metric Dimensions of Standard Series
Refractory Brick and Shapes
This standard is issued under the fixed designation C861; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 The standard dimensions are based on a 38-mm module
(taken as the equivalent to 1.5 in.) and are developed with the
1.1 This practice covers dimensions in millimetres for
aim of preserving a modular relationship between the dimen-
standardseriesrefractorybrickandshapesofallcompositions.
sions of the principal rectangular refractory shapes.
1.2 A standard method for converting all other dimensions
of shaped refractory articles from inch-pound to SI units is
4. Standard Dimensions
included.
4.1 Table 1 lists the standard nominal dimensions in
1.3 The values stated in SI units are to be regarded as
millimetres, with corresponding standard dimensions in inch-
standard. The values given in parentheses are for information
pound units shown for reference only. Note that these dimen-
only.
sions are not exact conversions, but in all but two cases are
within ⁄4 % of the exact value.
2. Referenced Documents
5. Conversion
2.1 ASTM Standards:
IEEE/ASTM SI10American National Standard for Use of
5.1 For dimensions not listed in Table 1, multiply the
theInternationalSystemofUnits(SI):TheModernMetric
dimension in inches by the factor 25.4 to obtain the exact
System
conversion in millimetres. For description or specification of
refractory shapes, round the dimension to the nearest whole
3. Significance and Use
millimetre. For example:
3.1 Thispracticeisprovidedintheinterestoffacilitatingthe
1 in. × 25.4 = 25.4 mm, expressed as 25 mm
transition of dimensional practice for standard refractory brick
11 in. × 25.4 = 279.4 mm, expressed as 279 mm
and shapes from inch-pound units to metric (SI) units.
22 ⁄2 in. × 25.4 = 571.5 mm, expressed as 572 mm
6. Standard Equivalent
ThispracticeisunderthejurisdictionofASTMCommitteeC08onRefractories
and is the direct responsibility of Subcommittee C08.92The Joseph E. Kopanda
6.1 For closest approximation to inch-pound units, the
Subcommittee for Editorial, Terminology and Classification.
metric (SI) Standard Equivalent is based upon the 228 by 114
Current edition approved Nov. 1, 2010. Published November 2010. Origin
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