ASTM C545-97

Standard Classification of Zircon Refractories

SCOPE
1.1 This classification covers fired refractory brick and shapes consisting predominantly of zircon (ZrO2[dot]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
• Technical Committee: C08 - Refractories
• Drafting Committee: C08.92 - The Joseph E. Kopanda Subcommittee for Editorial, Terminology and Classification

Relations

• Replaced By: ASTM C545-97(2002) - Standard Classification of Zircon Refractories
• Effective Date: 10-Nov-1997

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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