ASTM C416-97(2022)

Standard Classification of Silica Refractory Brick

SIGNIFICANCE AND USE
3.1 The presence of certain impurities in silica brick tends to lower their refractoriness and service limits. This classification permits those familiar with refractories to predict the refractoriness of silica brick from their alkali and alumina contents.
SCOPE
1.1 This classification is limited to silica brick meeting the following requirements:  
1.1.1 Alumina (Al2O3) content of less than 1.50 %.  
1.1.2 Titania (TiO2) content of less than 0.20 %.  
1.1.3 Iron oxide (FeO3) content of less than 2.50 %.  
1.1.4 Calcium oxide (CaO) content of less than 4.00 %.  
1.1.5 Average modulus of rupture of not less than 500 psi (3.45 MPa).  
1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2022
• ICS: 81.080 - Refractories
• Technical Committee: C08 - Refractories
• Drafting Committee: C08.92 - The Joseph E. Kopanda Subcommittee for Editorial, Terminology and Classification

Relations

• Refers: ASTM C133-24 - Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
• Effective Date: 01-Apr-2024
• Refers: ASTM C133-97(2008) - Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
• Effective Date: 01-Aug-2008
• Refers: ASTM C133-97(2008)e1 - Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
• Effective Date: 01-Aug-2008
• Refers: ASTM C133-97(2003) - Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
• Effective Date: 10-Apr-2003
• Refers: ASTM C133-97 - Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
• Effective Date: 01-Jan-1997

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C416 −97 (Reapproved 2022)
Standard Classification of
Silica Refractory Brick
This standard is issued under the fixed designation C416; 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.
Institute of Standards and Technology and other appropriate sources.
1. Scope
1.1 This classification is limited to silica brick meeting the 3. Significance and Use
following requirements:
3.1 Thepresenceofcertainimpuritiesinsilicabricktendsto
1.1.1 Alumina (Al O ) content of less than 1.50 %.
2 3
lower their refractoriness and service limits. This classification
1.1.2 Titania (TiO ) content of less than 0.20 %.
permits those familiar with refractories to predict the refracto-
1.1.3 Iron oxide (FeO ) content of less than 2.50 %.
riness of silica brick from their alkali and alumina contents.
1.1.4 Calcium oxide (CaO) content of less than 4.00 %.
4. Basis of Classification
1.1.5 Average modulus of rupture of not less than 500 psi
(3.45 MPa).
4.1 Flux Factor—Silica brick are classified on the basis of
impurities by the use of a “flux factor,” which is equal to the
1.2 This standard does not purport to address all of the
percent of alumina plus twice the percent of total alkalies.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.2 Types:
priate safety, health, and environmental practices and deter-
4.2.1 Type A—Silica brick having a flux factor of 0.50 or
mine the applicability of regulatory limitations prior to use.
less.
1.3 This international standard was developed in accor-
4.2.2 Type B—All other silica brick falling within the scope
dance with internationally recognized principles on standard-
of this classification.
ization established in the Decision on Principles for the
5. Test Methods
Development of International Standards, Guides and Recom-
5.1 The properties listed in this classification shall be
mendations issued by the World Trade Organization Technical
determined in accordance with the following ASTM methods:
Barriers to Trade (TBT) Committee.
5.1.1 Modulus of Rupture—Test Methods C133.
2. Referenced Documents
5.1.2 Chemical Analysis—XRF and ICP.
2.1 ASTM Standards:
6. Retests
C133 Test Methods for Cold Crushing Strength and Modu-
6.1 Because of variables resulting from sampling and the
lus of Rupture of Refractories
lack of satisfactory reproducibility in tests conducted by
NOTE 1—Chemical analysis of refractory products is determined by a
different laboratories, the material may be resampled and
combination of X-ray fluorescence (XRF)
...