ASTM C210-95(1999)

Standard Test Method for Reheat Change of Insulating Firebrick

SCOPE
1.1 This test method covers the determination of the permanent linear (and volume) change of insulating firebrick upon reheating under prescribed conditions.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Dec-1998
• ICS: 81.080 - Refractories
• Technical Committee: C08 - Refractories
• Drafting Committee: C08.03 - Physical Properties

Relations

• Replaced By: ASTM C210-95(2005) - Standard Test Method for Reheat Change of Insulating Firebrick
• Effective Date: 01-Mar-2005
• Referred By: ASTM C356-22 - Standard Test Method for Linear Shrinkage of Preformed High-Temperature Thermal Insulation Subjected to Soaking Heat
• Effective Date: 01-Jan-1999
• Referred By: ASTM F1312-19(2023) - Standard Specification for Brick, Insulating, High Temperature, Fire Clay
• Effective Date: 01-Jan-1999
• Referred By: ASTM C155-97(2022) - Standard Classification of Insulating Firebrick
• Effective Date: 01-Jan-1999
• Referred By: ASTM C113-14(2019) - Standard Test Method for Reheat Change of Refractory Brick
• Effective Date: 01-Jan-1999

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C 210–95 (Reapproved 1999)
Standard Test Method for
Reheat Change of Insulating Firebrick
This standard is issued under the fixed designation C 210; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Apparatus
1.1 This test method covers the determination of the perma- 4.1 The test kiln shall be capable of maintaining the
nent linear (and volume) change of insulating firebrick upon required temperature with a variation of not more than one half
reheating under prescribed conditions. a standard pyrometric cone over the hearth area during the
1.2 The values stated in inch-pound units are to be regarded prescribed heating schedule. If a gas- or oil-fired kiln is used,
as the standard. The values given in parentheses are for it shall be of the downdraft type and of such a design as not to
information only. permit the flame from the burner to impinge upon the test
1.3 This standard does not purport to address all of the specimens.The kiln atmosphere during the test shall be kept as
safety concerns, if any, associated with its use. It is the oxidizing as is practicable.
responsibility of the user of this standard to establish appro-
5. Procedure
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5.1 Test Specimens and Measurements:
5.1.1 Thetestspecimensshallconsistofthreebrick(Note1)
2. Referenced Documents 1 1
measuring 9 by 4 ⁄2 by 2 ⁄2 or 3 in. (228 by 114 by 64 or 76
2.1 ASTM Standards: mm) or three pieces of these dimensions cut out of larger
C 24 Test Method for Pyrometric Cone Equivalent (PCE) of shapes.
Fireclay and High Alumina Refractory Materials
NOTE 1—Three supporting brick from the same lot as the test speci-
C 155 Classification of Insulating Firebrick
mens are required also, so that the test sample is comprised of six brick.
E 230 Standard Temperature Electromotive Force (EMF)
5.1.2 Each specimen shall be labeled with ceramic paint,
Tables for Standardized Thermocouple
and before and after heating they shall be carefully measured
E 1256 Test Methods for Radiation Thermometer (Single
for length (Note 2), width, and thickness. Three measurements
Waveband Type)
(Note 3) to the nearest 0.02 in. (0.5 mm) shall be taken for each
dimension and the average of these shall be used. Each
3. Significance and Use
dimension shall be measured in three places along the longi-
3.1 Insulating firebrick (IFB) are classified by their bulk
tudinal center line on opposite faces, one measurement at the
density and reheat change (see Classification C 155). This test
center of the line and one ⁄2 in. (13 mm) in from each edge.
method defines thermal stability by measurement of IFB’s
Fig. 1 shows the location at which these measurements are to
reheat change following 24 h at a test temperature.
be made.
3.2 Sincethistestexposestheentiresampletoanisothermal
temperature condition, the user should be aware that most
NOTE 2—For classifying insulating firebrick according to Classification
applications for IFB involve a thermal gradient which may C 155, obtain the reheat change from the 9-in. (228-mm) dimension
measurements only.
cause the IFB’s dimensions to change differentially.
NOTE 3—Because of the large pore size of some insulating firebrick, it
This test method is under the jurisdiction of ASTM Committee C08 on is difficult to measure by means of calipers directly on the brick surfaces.
Refractories and is the direct responsibility of Subcommittee C08.03 on Physical
Accuracy may be obtained by holding two small pieces of flat polished
Tests.
steel plate of known thickness against the faces between which the
Current edition approved May 15, 1995. Published July 1995. Originally
dimension is to be obtained, and calipering on the outside steel surfaces
published as C 210 – 46. Last previous edition C 210 – 85 (1990). Originally part of
rather than directly against the brick surfaces. It is permissible to use a
C 93.
measuring device to obtain the dimensions of the brick, provided the
Annual Book of ASTM Standards, Vol 15.01.
3 measurements are not affected by large pores in the surface.
Annual Book of ASTM Standards, Vol 14.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C 210
5.2.1 Place the test specimens in the kiln so that each will
rest on a 9 by 2 ⁄2 or 3-in. (228 by 64 or 76-mm) face. Place
each specimen upon the 9 by 2 ⁄2 or 3-in. face of a supporting
brick that shall be from the same lot as the test specimen. Place
between the test specimen and the supporting member a layer
ofsuitablerefractorymaterial,thatisnonreactiveunderthetest
conditions and passes an ASTM No. 16 (1.18-mm) sieve
(equivalent to a 14-mesh Tyler Standard Series) and retained
on an ASTM No. 40 (425-µm) sieve (equivalent to a 35-mesh
Tyler Standard Series). Place each specimen no closer than 1 ⁄2
in. (38 mm) from either the other test specimens or the furnace
wall and parts.
NOTE 1—The dots on the center line of each face are ⁄2 in. (13 mm) in
from each edge, and the cross on the axis is in the center. These positions
6. Temperature Measurement
indicate the points at which three measurements for each dimensions are
to be made.
6.1 Measure the temperature within the kiln by means of an
FIG. 1 Test Brick Showing Measurement Locations
appropriate calibrated thermocouple. Refer to Table 1 and
Table 2 of Standard E 230 for the tolerances and upper
temperature limits for use of various thermocouples.At higher
5.2 Placing Test Specimens in Kiln: temperatures, the thermocouple may be withdrawn and a
TABLE 1 Heating Schedule for Reheat Change of Various Groups of Insulating Firebrick
Elapsed Allowable Temperature of Test Specimen, °F (°C) (The highest temperature in
Time Deviation each column shall be maintained for 24 h)
from from
Group 16 Group 20 Group 23 Group 26 Group 28 Group 30 Group 32 Group 33
Start of Schedule,
1550°F 1950°F 2250°F 2550°F 2750°F 2950°F 3150°F 3250°F
Heating, 6°F (°C)
(845°C) (1065°C) (1230°C) (1400°C) (1510°C) (1620°C) (1730°C) (1790°C)
h
Test Test Test Test Test Test Test Test
150 1050 1310 1470 1750 1750 1750 1750 1750
(28) (565) (710) (800) (955) (955) (955) (955) (955)
1 ⁄2 35 1260 1580 1820 2130 2130 2130 2200 2200
(19.5) (680) (860) (995) (1165) (1165) (1165) (1205) (1205)
220 1420 1790 2050 23
...