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ASTM C155-97(2007)

(Classification)

Standard Classification of Insulating Firebrick

Standard Classification of Insulating Firebrick

SIGNIFICANCE AND USE
This classification establishes an orderly grouping of insulating firebrick to provide group identifications for use by those producing or purchasing these materials. The group identification number is not meant to specifically designate the maximum service temperature although the number times 100 does approximate the temperature (in degrees Fahrenheit) to be used to check the reheat change and can be used as a guide for relative temperature stability. The bulk density limits the weight per unit volume for any group as sold, but is not meant to be used for detailed engineering calculations.
SCOPE
1.1 This classification covers heat insulating material known as insulating firebrick. This material is suitable for lining certain kinds of industrial furnaces.
Note 1—Insulating materials for use below 1000°F (538°C) are covered by ASTM Committee C-16 on Thermal Insulation.

General Information

Status
Historical
Publication Date
28-Feb-2007
ICS
81.080 - Refractories
Technical Committee
C08 - Refractories
Drafting Committee
C08.92 - The Joseph E. Kopanda Subcommittee for Editorial, Terminology and Classification
Current Stage
Ref Project

Relations

Replaces
ASTM C155-97(2002) - Standard Classification of Insulating Firebrick
Effective Date
01-Mar-2007
Replaced By
ASTM C155-97(2013) - Standard Classification of Insulating Firebrick
Effective Date
01-Sep-2013
Referred By
ASTM C767-20 - Standard Test Method for Thermal Conductivity of Carbon Refractories
Effective Date
01-Mar-2007
Referred By
ASTM C201-93(2019)e1 - Standard Test Method for Thermal Conductivity of Refractories
Effective Date
01-Mar-2007
Referred By
ASTM F1312-19(2023) - Standard Specification for Brick, Insulating, High Temperature, Fire Clay
Effective Date
01-Mar-2007
Referred By
ASTM C210-95(2019) - Standard Test Method for Reheat Change of Insulating Firebrick
Effective Date
01-Mar-2007
Referred By
ASTM C182-19 - Standard Test Method for Thermal Conductivity of Insulating Firebrick
Effective Date
01-Mar-2007
Referred By
ASTM C202-19 - Standard Test Method for Thermal Conductivity of Refractory Brick
Effective Date
01-Mar-2007

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ASTM C155-97(2007) - Standard Classification of Insulating Firebrick
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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:C155 −97(Reapproved 2007)
Standard Classification of
Insulating Firebrick
This standard is issued under the fixed designation C155; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope weight per unit volume for any group as sold, but is not meant
to be used for detailed engineering calculations.
1.1 This classification covers heat insulating material
known as insulating firebrick. This material is suitable for
4. Basis of Classification
lining certain kinds of industrial furnaces.
4.1 The classification of insulating firebrick in accordance
NOTE 1—Insulating materials for use below 1000°F (538°C) are
with Table 1 is based on bulk density (weight per cubic foot)
covered by ASTM Committee C-16 on Thermal Insulation.
and the behavior in the reheat change test conducted at the
specified temperature.
2. Referenced Documents
2.1 ASTM Standards:
5. Test Methods
C134 Test Methods for Size, Dimensional Measurements,
5.1 The properties enumerated in this classification shall be
and Bulk Density of Refractory Brick and Insulating
determined in accordance with the following ASTM test
Firebrick
methods:
C210 TestMethodforReheatChangeofInsulatingFirebrick
5.1.1 Bulk Density—Test Methods C134.
5.1.2 Reheat Change—Test Method C210. For the purpose
3. Significance and Use
of this classification, the percentage of reheat change shall be
3.1 This classification establishes an orderly grouping of
obtained from only the 9-in. (228-mm) dimension of the test
insulating firebrick to provide group identifications for use by
brick.
those producing or purchasing these materials. The group
identification number is not meant to specifically designate the
6. Retests
maximum service temperature although the number times 100
6.1 Because of variables resulting from sampling and the
does approximate the temperature (in degrees Fahrenheit) to be
lack of satisfactory reproducibility in tests conducted by
used to check the reheat change and can be used as a guide for
different laboratories, the material may be resampled and
relative temperature stability. The bulk density limits the
retested when requested by either the manufacturer or the
purchaser. This may apply in instances when the first test
This classification is under the jurisdiction of ASTM Committee C08 on results do not conform to the requirements prescribed in this
Refractories and is the direct responsibility of Subco
...

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1.2.1 Exception—In 7.3, the equivalent SI unit is expressed in parentheses.  
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4.1 This test method was developed for use both by manufacturers as a process control tool for the production of AZS fusion-cast refractories, and by glass manufacturers in the selection of refractories and design of glass-melting furnaces.  
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4.3 The procedures and results may be applied to other refractory types or applications (that is, reheat furnace skid rail brick) in which glass exudation is considered to be important.
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1.1 This test method covers a procedure for causing the exudation of a glassy phase to the surface of fusion-cast specimens by subjecting them to temperatures corresponding to glass furnace operating temperatures.  
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2.1 This test method provides a guide for evaluating the resistance of refractories in glass-melting furnace superstructures to vapor attack. This test method may also be useful for evaluating refractories in other applications where vapor attack occurs.  
2.2 An electric-heated furnace is recommended. Water vapor and other atmospheric components in a gas- or fuel-fired furnace may participate in the chemical and physical reactions being studied. Results may differ, therefore, depending upon the nature and type of firing employed.  
2.3 The degree of correlation between this test method and service performance is not fully determinable. This is intended to be an accelerated test method that generates a substantial degree of reaction in a relatively short amount of time. This acceleration may be accomplished by changing the composition and/or concentration of the reactants, increasing temperatures, or by performing the test in an isothermal environment.  
2.4 Since the test method may not accurately simulate the service environment, observed results of this test method may not be representative of those found in service. It is imperative that the user understand and consider how the results of this test method may differ from those encountered in service. This is particularly likely if the reaction products, their nature, or their degree differ from those normally found in the actual service environment.  
2.5 It is incumbent upon the user to understand that this is an aggressive, accelerated test method and to be careful in interpreting the results. If, for example, the reaction species have never been found in a real-world furnace, then this test method should not necessarily be considered valid to evaluate the refractory in question.
SCOPE
1.1 This test method covers a procedure for comparing the behavior of refractories in contact with vapors under conditions intended to simulate the environment within a glass-melting or other type of furnace when refractories are exposed to vapors from raw batch, molten glass, fuel, fuel contaminants, or other sources. This procedure is intended to accelerate service conditions for the purpose of determining in a relatively short time the interval resistance to fluxing, bloating, shrinkage, expansion, mineral conversion, disintegration, or other physical changes that may occur.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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3.1 Fireclay steel-teeming nozzles and sleeves are classified by volume reheat change. Bloating of some refractories results in irregular reheat dimensions, which are difficult to measure. This practice determines the volume without depending upon physical linear measurements.  
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SCOPE
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1.3 The values stated in SI units are to be regarded as the standard.  
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