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ASTM C1547-02(2007)

(Classification)

Standard Classification for Fusion-Cast Refractory Blocks and Shapes

Standard Classification for Fusion-Cast Refractory Blocks and Shapes

SIGNIFICANCE AND USE
This classification categorizes the defined types of fused-cast refractory blocks and shapes into distinct classes based on mineralogical composition. Such classes have historically been useful for relating the defined types and classes with specific industrial applications and for developing product or purchasing specifications.
SCOPE
1.1 This classification covers commercial fusion-cast refractory blocks and shapes. Its purpose is to set forth the various types and classes of these materials according to their mineralogical compositions. These compositions are important to determining their suitability for use in specified applications. This standard is not intended to cover commercial fused grains or beads.
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 requirements prior to use.

General Information

Status
Historical
Publication Date
30-Sep-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 C1547-02 - Standard Classification for Fusion-Cast Refractory Blocks and Shapes
Effective Date
01-Oct-2007
Replaced By
ASTM C1547-02(2013) - Standard Classification for Fusion-Cast Refractory Blocks and Shapes
Effective Date
01-Sep-2013

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ASTM C1547-02(2007) - Standard Classification for Fusion-Cast Refractory Blocks and ShapesASTM C1547-02(2007) - Standard Classification for Fusion-Cast Refractory Blocks and Shapes
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ASTM C1547-02(2007) - Standard Classification for Fusion-Cast Refractory Blocks and Shapes
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C1547 −02(Reapproved 2007)
Standard Classification for
1
Fusion-Cast Refractory Blocks and Shapes
This standard is issued under the fixed designation C1547; 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 3. Terminology
1.1 Thisclassificationcoverscommercialfusion-castrefrac- 3.1 For definitions of terms used in this classification, see
tory blocks and shapes. Its purpose is to set forth the various Terminology C71.
types and classes of these materials according to their miner-
4. Significance and Use
alogical compositions. These compositions are important to
4.1 This classification categorizes the defined types of
determining their suitability for use in specified applications.
fused-cast refractory blocks and shapes into distinct classes
This standard is not intended to cover commercial fused grains
basedonmineralogicalcomposition.Suchclasseshavehistori-
or beads.
cally been useful for relating the defined types and classes with
1.2 This standard does not purport to address all of the
specific industrial applications and for developing product or
safety concerns, if any, associated with its use. It is the
purchasing specifications.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Basis of Classification
bility of regulatory requirements prior to use.
5.1 Fused alumina refractories are classified by the content
of soda, Na O, as determined by chemical analysis and the
2
2. Referenced Documents
resulting beta- (β-) alumina (NaAl O ) or beta"-(β"-) alu-
11 17
2
2.1 ASTM Standards:
mina (NaMg Al O ) content as determined by quantitative
2 15 25
C1118 Guide for Selecting Components for Wavelength-
x-ray diffraction (XRD) or by quantitative image analysis of
Dispersive X-Ray Fluorescence (XRF) Systems (With-
representative polished sections.
3
drawn 2011)
NOTE 2—Differential rates of solidification at the surface and the
E1479 Practice for Describing and Specifying Inductively- interior of fusion cast shapes, result in different grain sizes. Likewise, the
segregation of one or more components may occur during solidification.
Coupled Plasma Atomic Emission Spectrometers
Therefore the most representative specimens are small, rapidly cooled
2.2 Other Document:
ladles or shapes (no dimension >3 in. (>75 mm)) obtained by casting into
“A Practical Guide for the Preparation of Specimens for
metallic or graphite molds directly from the pouring stream of the fusion
furnace.
X-Ray Fluorescence and X-Ray Diffraction Analysis,”
Victor E. Buhrke, Ron Jenkins and Deane K. Smith, eds.,
5.2 Fused alumina-zirconia-silica (AZS) and high zirconia
John Wiley & Sons, Inc., New York, 1998
refractory types are classified by the content of monoclinic
zirconia (ZrO ) as determined by chemical analysis or quanti-
2
NOTE 1—Chemical analysis of refractory products are determined by a
tative image analysis on representative polished sections.
combination of x-ray fluorescence (XRF) and inductively coupled plasma
(ICP) analyses using standard reference materials (SRM), including
5.3 Fused aluminosilicate refractories are classified by their
various types of minerals and refractory materials which are available
alumina to silica (Al O :SiO ) ratios as determined by chemi-
from the National Institute of Standards and Technology and other 2 3 2
appropriate sources. cal analysis and by the amount of monoclinic zirconia present
asdeterminedbyx-raydiffraction(XRD)orquantitativeimage
analysis.
1
This classification is under the jurisdiction of ASTM Committee C08 on
5.4 Fused chromium-containing refractories are classified
Refractories and is the direct responsibility of Subcommittee C08.92 on The Joseph
by the amount of chromia present by chemical analysis and by
E. Kopanda Subcommittee for Editorial, Terminology and Classification.
its mineralogical form as determined by x-ray diffraction
Current edition approved Oct. 1, 2007. Published November 2007. Originally
approved in 2002. Last previous edition approved in 2002 as C1547 – 02. DOI:
(XRD) or by quantitative image analysis.
10.1520/C1547-02R07.
2
5.5 Magnesia-containing fused refractories are classified by
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the amount and type of MgO (periclase) and spinel phases
2+
Standards volume information, refer to the standard’s Document Summary page on 3+ 2+
(R R O , where R represents the relevant divalent cations
2 4
the ASTM website.
3+
3
and R represents the relevant
...

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SCOPE
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3.1 The oxidation of silicon carbide refractories at elevated temperatures is an important consideration in the application of these refractories. The product of oxidation is amorphous silica or cristobalite, depending upon the temperature at which oxidation takes place. This oxide formation is associated with expansion and degradation of strength. The quantity of water vapor in the atmosphere greatly affects the rate of oxidation.  
3.2 The test, which creates and measures the expansion, is suitable for guidance in product development and relative comparison in application work where oxidation potential is of concern. The variability of the test is such that it is not recommended for use as a referee test.
SCOPE
1.1 This test method covers the evaluation of the oxidation resistance of silicon carbide refractories at elevated temperatures in an atmosphere of steam. The steam is used to accelerate the test. Oxidation resistance is the ability of the silicon carbide (SiC) in the refractory to resist conversion to silicon dioxide (SiO2) and its attendant crystalline growth.  
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