ASTM C416-97(2013)

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:
Alumina (Al2O 3) content of less than 1.50 %.
Titania (TiO2) content of less than 0.20 %.
Iron oxide (FeO3) content of less than 2.50 %.
Calcium oxide (CaO) content of less than 4.00 %.
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 and health practices and determine the applicability of regulatory limitations prior to use.

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 C416-97(2007) - Standard Classification of Silica Refractory Brick
• Effective Date: 01-Sep-2013
• Referred By: ASTM C71-12(2018) - Standard Terminology Relating to 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C416 −97 (Reapproved 2013)
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.
1. Scope 3. Significance and Use
1.1 This classification is limited to silica brick meeting the 3.1 Thepresenceofcertainimpuritiesinsilicabricktendsto
following requirements: lower their refractoriness and service limits. This classification
Alumina (Al O ) content of less than 1.50 %. permits those familiar with refractories to predict the refracto-
2 3
Titania (TiO ) content of less than 0.20 %. riness of silica brick from their alkali and alumina contents.
Iron oxide (FeO ) content of less than 2.50 %.
4. Basis of Classification
Calcium oxide (CaO) content of less than 4.00 %.
Average modulus of rupture of not less than 500 psi (3.45
4.1 FluxFactor —Silica brick are classified on the basis of
MPa).
impurities by the use of a “flux factor,” which is equal to the
percent of alumina plus twice the percent of total alkalies.
1.2 This standard does not purport to address all of the
4.2 Types:
safety concerns, if any, associated with its use. It is the
4.2.1 Type A—Silica brick having a flux factor of 0.50 or
responsibility of the user of this standard to establish appro-
less.
priate safety and health practices and determine the applica-
4.2.2 Type B—All other silica brick falling within the scope
bility of regulatory limitations prior to use.
of this classification.
2. Referenced Documents
5. Test Methods
2.1 ASTM Standards:
5.1 The properties listed in this classification shall be
C133 Test Methods for Cold Crushing Strength and Modu-
determined in accordance with the following ASTM methods:
lus of Rupture of Refractories
5.1.1 Modulus of Rupture—Test Method C133.
5.1.2 Chemical Analysis—XRF and ICP.
NOTE 1—Chemical analysis of refractory products is determined by a
combination of x-ray fluorescence (XRF) and inductively coupled plazma
(ICP) using standard reference materials (SRM), including various types
6. Retests
of minerals and refractory materials that are available from the National
6.1 Because of variables resulting from sampling and the
Institute of Standards and Technology and other appropriate sources.
lack of satisfactory reproducibility in tests conducted by
different laboratories, the material may be resampled and
This classification is under the jurisdiction of A
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