ASTM C1261-13(2017)e1

Standard Specification for Firebox Brick for Residential Fireplaces

ABSTRACT
This specification covers brick intended for use as the lining in the fireboxes of residential fireplaces. Firebox brick are manufactured from clay, fire clay, shale, or similar naturally occurring earthy substances and subjected to a heat treatment at elevated temperatures (firing). The heat treatment must develop a fired bond between the particulate constituents to provide the strength and durability requirements. Firebox brick shall be shaped during manufacture by molding, pressing, or extruding and cutting. Modulus of rupture test, pyrometric cone equivalent test, size test, and warpage test shall be performed to conform to the specified requirements.
SCOPE
1.1 This specification covers brick intended for use as the lining in the fireboxes of residential fireplaces.  
1.2 Firebox brick are manufactured from clay, fire clay, shale, or similar naturally occurring earthy substances and subjected to a heat treatment at elevated temperatures (firing). The heat treatment must develop a fired bond between the particulate constituents to provide the strength and durability requirements of this specification (see Terminology C1232).
Note 1: Firebox brick are typically installed using ground fire clay mortar or refractory mortar. Mortar joints are typically 1/8 in. (3.2 mm) thick, just thick enough to accommodate dimensional variations in the firebox brick.  
1.3 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this specification.  
1.4 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.  
1.5 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: Historical
• Publication Date: 30-Nov-2017
• ICS: 81.080 - Refractories
• Technical Committee: C15 - Masonry – Manufactured Masonry Units, Mortars and Grouts
• Drafting Committee: C15.02 - Brick and Structural Clay Tile

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
´1
Designation:C1261 −13 (Reapproved 2017)
Standard Specification for
Firebox Brick for Residential Fireplaces
This standard is issued under the fixed designation C1261; 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.
ε NOTE—Reapproved with editorial change in Table 1 in December 2017.
1. Scope Fireclay and High Alumina Refractory Materials
C67 Test Methods for Sampling and Testing Brick and
1.1 This specification covers brick intended for use as the
Structural Clay Tile
lining in the fireboxes of residential fireplaces.
C1232 Terminology for Masonry
1.2 Firebox brick are manufactured from clay, fire clay,
shale, or similar naturally occurring earthy substances and
3. Terminology
subjected to a heat treatment at elevated temperatures (firing).
3.1 Definitions—For definitions of terms relating to this
The heat treatment must develop a fired bond between the
specification, see Terminology C1232.
particulate constituents to provide the strength and durability
requirements of this specification (see Terminology C1232).
4. Materials and Manufacture
NOTE 1—Firebox brick are typically installed using ground fire clay
4.1 Clay, as it occurs in nature, differs in composition and
mortar or refractory mortar. Mortar joints are typically ⁄8 in. (3.2 mm)
physical properties. These differences are compensated for by
thick, just thick enough to accommodate dimensional variations in the
varying the manufacture processes of forming and firing. In
firebox brick.
order to be satisfactory for firebox brick production, clays must
1.3 The text of this specification references notes and
have plasticity that permits them to be shaped or molded when
footnotes that provide explanatory material. These notes and
mixed with water. Clays must also have sufficient tensile
footnotes (excluding those in tables and figures) shall not be
strength to maintain shape.
considered as requirements of this specification.
4.2 Firebox brick are shaped during manufacture by
1.4 The values stated in inch-pound units are to be regarded
molding,pressing,orextrudingandcutting.Fireboxbrickshall
as standard. The values given in parentheses are mathematical
be 100 % solid with no cores or frogs.
conversions to SI units that are provided for information only
and are not considered standard.
4.3 Firebox brick shall be free of defects, deficiencies, and
surface treatments, including coatings, that would interfere
1.5 This international standard was developed in accor-
with the proper setting of the brick or significantly impair the
dance with internationally recognized principles on standard-
strength or performance of the construction.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Physical Properties
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5.1 Modulus of Rupture—Residential firebox brick shall
have a minimum modulus of rupture of 500 psi (3.45 MPa).
2. Referenced Documents
5.2 Pyrometric Cone Equivalent (PCE)—Fireboxbrickshall
2.1 ASTM Standards:
have a minimum pyrometric cone equivalent (PCE) of 13.
C24 Test Method for Pyrometric Cone Equivalent (PCE) of
6. Dimensions and Permissible Variations
6.1 Size—The size of the firebox brick shall be as specified
This specification is under the jurisdiction of ASTM Committee C15 on
by the purchaser. In the sample of units, no firebox brick shall
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.02 on Brick and Structural Clay Tile.
depart from the specified size by more than the maximum
Current edition approved Dec. 1, 2017. Published January 2018. Originally
permissible variation given in Table 1.
approved in 1994. Last previous edition approved in 2013 as C1261 – 13. DOI:
10.1520/C1261-13R17E01.
6.2 Warpage—Tolerances for warpage of face or edges of
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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: C1261 − 13 C1261 − 13 (Reapproved 2017)
Standard Specification for
Firebox Brick for Residential Fireplaces
This standard is issued under the fixed designation C1261; 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.
ε NOTE—Reapproved with editorial change in Table 1 in December 2017.
1. Scope*Scope
1.1 This specification covers brick intended for use as the lining in the fireboxes of residential fireplaces.
1.2 Firebox brick are manufactured from clay, fire clay, shale, or similar naturally occurring earthy substances and subjected to
a heat treatment at elevated temperatures (firing). The heat treatment must develop a fired bond between the particulate constituents
to provide the strength and durability requirements of this specification (see Terminology C1232).
NOTE 1—Firebox brick are typically installed using ground fire clay mortar or refractory mortar. Mortar joints are typically ⁄8 in. (3.2 mm) thick, just
thick enough to accommodate dimensional variations in the firebox brick.
1.3 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of this specification.
1.4 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.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
C24 Test Method for Pyrometric Cone Equivalent (PCE) of Fireclay and High Alumina Refractory Materials
C67 Test Methods for Sampling and Testing Brick and Structural Clay Tile
C1232 Terminology for Masonry
3. Terminology
3.1 Definitions—For definitions of terms relating to this specification, see Terminology C1232.
4. Materials and Manufacture
4.1 Clay, as it occurs in nature, differs in composition and physical properties. These differences are compensated for by varying
the manufacture processes of forming and firing. In order to be satisfactory for firebox brick production, clays must have plasticity
that permits them to be shaped or molded when mixed with water. Clays must also have sufficient tensile strength to maintain
shape.
4.2 Firebox brick are shaped during manufacture by molding, pressing, or extruding and cutting. Firebox brick shall be 100 %
solid with no cores or frogs.
4.3 Firebox brick shall be free of defects, deficiencies, and surface treatments, including coatings, that would interfere with the
proper setting of the brick or significantly impair the strength or performance of the construction.
This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.02 on Brick
and Structural Clay Tile.
Current edition approved Dec. 1, 2013Dec. 1, 2017. Published December 2013January 2018. Originally approved in 1994. Last previous edition approved in 20102013
as C1261 – 10.C1261 – 13. DOI: 10.1520/C1261-13.10.1520/C1261-13R17E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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C1261 − 13 (2017)
5. Physical Properties
5.1 Modulus of Rupture—Residential firebox brick shall have a minimum modulus of rupture of 500 psi (3.45 MP
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