1、Designation: C155 97 (Reapproved 2013)Standard Classification ofInsulating Firebrick1This standard is issued under the fixed designation C155; 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 p
2、arentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This classification covers heat insulating materialknown as insulating firebrick. This material is suitable forlining certain kinds of industrial
3、furnaces.NOTE 1Insulating materials for use below 1000F (538C) arecovered2by ASTM Committee C-16 on Thermal Insulation.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information on
4、lyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2C134 Test Methods for Size, Dimensional Measurements,and Bulk Density of Refractory Brick and InsulatingFirebrickC210 Test Method for Reheat Change of Insulating Firebrick3. Significance and Use3.1 This classification estab
5、lishes an orderly grouping ofinsulating firebrick to provide group identifications for use bythose producing or purchasing these materials. The groupidentification number is not meant to specifically designate themaximum service temperature although the number times 100does approximate the temperatu
6、re (in degrees Fahrenheit) to beused to check the reheat change and can be used as a guide forrelative temperature stability. The bulk density limits theweight per unit volume for any group as sold, but is not meantto be used for detailed engineering calculations.4. Basis of Classification4.1 The cl
7、assification of insulating firebrick in accordancewith Table 1 is based on bulk density (weight per cubic foot)and the behavior in the reheat change test conducted at thespecified temperature.5. Test Methods5.1 The properties enumerated in this classification shall bedetermined in accordance with th
8、e following ASTM testmethods:5.1.1 Bulk DensityTest Methods C134.5.1.2 Reheat ChangeTest Method C210. For the purposeof this classification, the percentage of reheat change shall beobtained from only the 9-in. (228-mm) dimension of the testbrick.6. Retests6.1 Because of variables resulting from samp
9、ling and thelack of satisfactory reproducibility in tests conducted bydifferent laboratories, the material may be resampled andretested when requested by either the manufacturer or thepurchaser. This may apply in instances when the first testresults do not conform to the requirements prescribed in t
10、hisclassification. The final results to be used shall be the averageof at least two sets of results, each of which has been obtainedby following in detail the specified testing procedures.7. Keywords7.1 bulk density; insulating firebrick; refractories; reheatchange1This classification is under the j
11、urisdiction of ASTM Committee C08 onRefractories and is the direct responsibility of Subcommittee C08.92 on The JosephE. Kopanda Subcommittee for Editorial, Terminology and Classification.Current edition approved Sept. 1, 2013. Published September 2013. Originallyapproved in 1940. Last previous edit
12、ion approved in 2007 as C155 97 (2007).DOI: 10.1520/C0155-97R13.2For referenced 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 websi
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18、 from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Grouping of Insulating FirebrickGroupNo.Reheat Change, NotMore Than 2 %When Tested atF (C)Bulk DensityNot GreaterThan lb/ft3(g/cm3)16 1550 (845) 34 (0.54)20 1950 (1065) 40 (0.64)23 2250 (1230) 48 (0.77)26 2550 (1400) 54 (0.86)28 2750 (1510) 60 (0.96)30 2950 (1620) 68 (1.09)32 3150 (1730) 95 (1.52)33 3250 (1790) 95 (1.52)C155 97 (2013)2
