ASTM C416-97(2002)

Standard Classification of Silica Refractory Brick

SCOPE
1.1 This classification is limited to silica brick meeting the following requirements:
Alumina (Al2O3) 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: 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 C416-97 - Standard Classification of Silica Refractory Brick
• Effective Date: 10-Nov-1997
• Replaced By: ASTM C416-97(2007) - Standard Classification of Silica Refractory Brick
• Effective Date: 01-Oct-2007
• Referred By: ASTM C71-12(2018) - Standard Terminology Relating to Refractories
• Effective Date: 10-Nov-1997

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 416 – 97 (Reapproved 2002)
Standard Classification of
Silica Refractory Brick
This standard is issued under the fixed designation C 416; 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 permits those familiar with refractories to predict the refracto-
riness of silica brick from their alkali and alumina contents.
1.1 This classification is limited to silica brick meeting the
following requirements:
4. Basis of Classification
Alumina (Al O ) content of less than 1.50 %.
2 3
4.1 FluxFactor —Silica brick are classified on the basis of
Titania (TiO ) content of less than 0.20 %.
impurities by the use of a “flux factor,” which is equal to the
Iron oxide (FeO ) content of less than 2.50 %.
percent of alumina plus twice the percent of total alkalies.
Calcium oxide (CaO) content of less than 4.00 %.
4.2 Types:
Average modulus of rupture of not less than 500 psi (3.45
4.2.1 Type A—Silica brick having a flux factor of 0.50 or
MPa).
less.
1.2 This standard does not purport to address all of the
4.2.2 Type B—All other silica brick falling within the scope
safety concerns, if any, associated with its use. It is the
of this classification.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Test Methods
bility of regulatory limitations prior to use.
5.1 The properties listed in this classification shall be
determined in accordance with the following ASTM methods:
2. Referenced Documents
5.1.1 Modulus of Rupture—Test Method C 133.
2.1 ASTM Standards:
5.1.2 Chemical Analysis—XRF and ICP.
C 133 Test Methods for Cold Crushing Strength and Modu-
lus of Rupture of Refractories
6. Retests
NOTE 1—Chemical analysis of refractory products is determined by a
6.1 Because of variables resulting from sampling and the
combination of x-ray fluorescence (XRF) and inductively coupled plazma
lack of satisfactory reproducibility in tests conducted by
(ICP) using standard reference materials (SRM), including various types
different laboratories, the material may be resampled and
of minerals and refractory materials that are available from the National
3 retested when requested by either the manufacturer or the
Inst
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