ASTM C545-97(2002)

Standard Classification of Zircon Refractories

SCOPE
1.1 This classification covers fired refractory brick and shapes consisting predominantly of zircon (ZrO2·SiO2) and containing, by chemical analysis, not less than 60 % zirconium oxide (ZrO2) and not less than 30 % silica (SiO2).

General Information

• Status: Historical
• Publication Date: 09-Nov-1997
• ICS: 81.080 - Refractories
• Technical Committee: C08 - Refractories
• Drafting Committee: C08.92 - The Joseph E. Kopanda Subcommittee for Editorial, Terminology and Classification

Relations

• Replaces: ASTM C545-97 - Standard Classification of Zircon Refractories
• Effective Date: 10-Nov-1997
• Replaced By: ASTM C545-97(2007) - Standard Classification of Zircon Refractories
• Effective Date: 01-Oct-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 545 – 97 (Reapproved 2002)
Standard Classification of
Zircon Refractories
This standard is issued under the fixed designation C 545; 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.
1. Scope This classification is considered useful for purchase specifica-
tions and quality control.
1.1 This classification covers fired refractory brick and
shapes consisting predominantly of zircon (ZrO ·SiO ) and
2 2
4. Basis of Classification
containing, by chemical analysis, not less than 60 % zirconium
4.1 Types:
oxide (ZrO ) and not less than 30 % silica (SiO ).
2 2
4.1.1 Type A (Regular)—Zircon refractories having a bulk
3 3
2. Referenced Documents density of less than 240 lb/ft (3.84 g/cm ).
4.1.2 Type B (Dense)—Zircon refractories having a bulk
2.1 ASTM Standards:
3 3
density of 240 lb/ft (3.84 g/cm ) or more.
C 20 Test Methods for Apparent Porosity, Water Absorp-
tion, Apparent Specific Gravity, and Bulk Density of
5. Test Methods
Burned Refractory Brick and Shapes by Boiling Water
5.1 The properties listed in this classification shall be
NOTE 1—Chemical analysis of refractory products are determined by a
determined by the following ASTM methods:
combination of x-ray fluorescence (XRF) and inductively coupled plazma
5.1.1 Bulk Density—Test Methods C 20 or C 830.
(ICP) using standard reference materials (SRM), including various types
5.1.2 Chemical Analysis—XRF and ICP.
of minerals and refractory materials which are available from the National
Institute of Standards and Technology and other appropriate sources.
6. Retests
C 830 Test Methods for Apparent Porosity, Liquid Absorp-
6.1 Because of variables resulting from sampling and the
tion, Apparent Specific Gravity, and Bulk Density of
lack of satisfactory reproducibility in tests conducted by
Refractory Shapes by Vacuum Pressure
different laboratories, the material may be resampled and
3. Significance and Use
retested when requested by either the manufacturer or the
purchaser. This may apply in instances when th
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