ASTM C545-97(2013)

Standard Classification of Zircon Refractories

SIGNIFICANCE AND USE
3.1 The zircon content and bulk density of a zirconia-silica refractory material have important influences on chemical resistance and its satisfactory use in refractory applications. This classification is considered useful for purchase specifications and quality control.
SCOPE
1.1 This classification covers fired refractory brick and shapes consisting predominantly of zircon (ZrO2·SiO 2) and containing, by chemical analysis, not less than 60 % zirconium oxide (ZrO2) and not less than 30 % silica (SiO 2).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

General Information

• Status: Historical
• Publication Date: 31-Aug-2013
• 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(2007) - Standard Classification of Zircon Refractories
• Effective Date: 01-Sep-2013

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C545 −97 (Reapproved 2013)
Standard Classification of
Zircon Refractories
This standard is issued under the fixed designation C545; 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. Significance and Use
1.1 This classification covers fired refractory brick and 3.1 The zircon content and bulk density of a zirconia-silica
shapes consisting predominantly of zircon (ZrO ·SiO ) and refractory material have important influences on chemical
2 2
containing, by chemical analysis, not less than 60 % zirconium resistance and its satisfactory use in refractory applications.
oxide (ZrO ) and not less than 30 % silica (SiO ). This classification is considered useful for purchase specifica-
2 2
tions and quality control.
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4. Basis of Classification
conversions to SI units that are provided for information only
4.1 Types:
and are not considered standard.
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. Referenced Documents
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.
C20 Test Methods for Apparent Porosity, Water Absorption,
Apparent Specific Gravity, and Bulk Density of Burned
5. Test Methods
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 C20 or C830.
(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
C830 Test Methods for Apparent Porosity, Liquid
6.1 Because of variables resulting from sampling and the
Absorption, Apparent Specific Gravity, and Bulk Density
lack of satisfactory reproducibility in tests conducted by
of Refractory Shapes by Vacuum Pressure
different laboratories, the material may be resampled and
retested when requested by eit
...