ASTM C1464-21

Standard Specification for Bent Glass

ABSTRACT
This specification covers the standard for bent glass proposed for use in general building construction, furniture, display, and various other non-automotive applications. When the glass is specified as chemically strengthened, heat-strengthened, or fully tempered, the fabrication processes must be completed prior to the strengthening. The glass specimen shall also undergo impact testing for safety glazing.
SCOPE
1.1 This specification covers the requirements for bent glass used in general building construction, furniture, display, and various other non-automotive applications.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.3 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification.  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.  
1.4 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-2021
• ICS: 81.040.20 - Glass in building
• Technical Committee: C14 - Glass and Glass Products
• Drafting Committee: C14.08 - Flat Glass

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: C1464 −21
Standard Specification for
1
Bent Glass
This standard is issued under the fixed designation C1464; 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.
3
1. Scope 2.2 ANSI Standard:
ANSI-Z97.1 Safety Glazing Materials Used in Buildings -
1.1 This specification covers the requirements for bent glass
Safety Performance Specifications and Methods of Test
used in general building construction, furniture, display, and
4
2.3 Federal Standard:
various other non-automotive applications.
CPSC 16 CFR 1201 Consumer Product Safety Commission
1.2 The values stated in SI units are to be regarded as
Safety Standard for Architectural Glazing Material
standard. The values given in parentheses after SI units are
3. Terminology
provided for information only and are not considered standard.
3.1 Definitions:
1.3 The following safety hazards caveat pertains only to the
3.1.1 Refer to Terminology C162, Specifications C1036,
test method portion, Section 8, of this specification. This
C1422/C1422M, C1376, and C1172, as appropriate.
standard does not purport to address all of the safety concerns,
3.1.2 blemishes in flat glass—refer to Specifications C1036,
if any, associated with its use. It is the responsibility of the user
C1048, C1422/C1422M, C1376, and C1172, as appropriate.
of this standard to establish appropriate safety, health, and
environmental practices and determine the applicability of
3.2 Definitions of Terms Specific to This Standard:
regulatory limitations prior to use.
3.2.1 arc—see girth.
1.4 This international standard was developed in accor-
3.2.2 bend axis—the imaginary pivot point around which a
dance with internationally recognized principles on standard-
radius sweeps, and which may be extended along a line, to
ization established in the Decision on Principles for the
further describe how a surface is being shaped.
Development of International Standards, Guides and Recom-
3.2.3 bend profile—aprofileofthecurvaturetakenatacross
mendations issued by the World Trade Organization Technical
section of the shape perpendicular to the bend axis.
Barriers to Trade (TBT) Committee.
3.2.4 bent glass—flat glass that has been shaped while hot
into a body having curved surfaces.
2. Referenced Documents
3.2.5 chord—a straight line segment that joins two points of
2
2.1 ASTM Standards:
an arc.
C162 Terminology of Glass and Glass Products
3.2.6 complex bend—a profile shape composed of curvature
C1036 Specification for Flat Glass
not easily defined by multiple radii that can result in a bent
C1048 Specification for Heat-Strengthened and Fully Tem-
shapeononeormoreaxis,typicallydefinedbymodelormold;
pered Flat Glass
see Fig. 1.
C1172 Specification for Laminated Architectural Flat Glass
C1376 Specification for Pyrolytic and Vacuum Deposition
3.2.7 compound bend—a profile shape composed of curva-
Coatings on Flat Glass
ture of more than one radius, curved on two or more axes.
C1422/C1422M Specification for Chemically Strengthened
3.2.8 concave surface—the curved major surface closest to
Flat Glass
an imaginary center point of a circle.
3.2.9 convex surface—the curved major surface farthest
away from an imaginary center point of a circle.
1
This specification is under the jurisdiction of ASTM Committee C14 on Glass
3.2.10 craze—the splitting or bunching of a coating result-
and Glass Products and is the direct responsibility of Subcommittee C14.08 on Flat
ing from pivot of the major glass surfaces about the centerline
Glass.
Current edition approved Sept. 1, 2021. Published November 2021. Originally
approved in 2000. Last previous edition approved in 2016 as C1464 – 16. DOI:
3
10.1520/C1464-21. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4th Floor, New York, NY 10036, http://www.ansi.org.
4
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1464 − 21
FIG. 1 Complex Bend
as the glass is bent, and which is a function of the pro
...

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.
Designation: C1464 − 16 C1464 − 21
Standard Specification for
1
Bent Glass
This standard is issued under the fixed designation C1464; 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
1.1 This specification covers the requirements for bent glass used in general building construction, furniture, display, and various
other non-automotive applications.
1.2 The dimensional values, values stated in SI units are to be regarded as the standard. The values given in parentheses after SI
units are provided for information only.only and are not considered standard.
1.3 The following safety hazards caveat pertains only to the test method portion, Section 78, of this specification. 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 safety, health, and healthenvironmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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
2.1 ASTM Standards:
C162 Terminology of Glass and Glass Products
C1036 Specification for Flat Glass
C1048 Specification for Heat-Strengthened and Fully Tempered Flat Glass
C1172 Specification for Laminated Architectural Flat Glass
C1376 Specification for Pyrolytic and Vacuum Deposition Coatings on Flat Glass
C1422C1422/C1422M Specification for Chemically Strengthened Flat Glass
3
2.2 ANSI StandardStandard:
ANSI Z -97.1ANSI-Z97.1 Safety Glazing Materials Used in Buildings—Safety Buildings - Safety Performance Specifications
and Methods of Test
4
2.3 Federal Document:Standard:
CPSC 16 CFR 1201 Consumer Product Safety Commission Safety Standard for Architectural Glazing Material
3. Terminology
3.1 Definitions:
1
This specification is under the jurisdiction of ASTM Committee C14 on Glass and Glass Products and is the direct responsibility of Subcommittee C14.08 on Flat Glass.
Current edition approved May 1, 2016Sept. 1, 2021. Published June 2016November 2021. Originally approved in 2000. Last previous edition approved in 20062016 as
C1464 – 06 (2011).C1464 – 16. DOI: 10.1520/C1464-16.10.1520/C1464-21.
2
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.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.Superintendent of Documents, 732 N. Capitol St., NW,
Washington, DC 20401-0001, http://www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1464 − 21
3.1.1 Refer to Terminology C162, Specifications C1036, C1422C1422/C1422M, C1376, and C1172, as appropriate.
3.1.2 Blemishesblemishes in Flat Glass—flat glass—Referrefer to Specifications C1036, C1048, C1422C1422/C1422M, C1376,
and C1172, as appropriate.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 arc—see girth.
3.2.2 bend axis—the imaginary pivot point around which a radius sweeps, and which may be extended along a line, to further
describe how a surface is being shaped.
3.2.3 bend profile—a profile of the curvature taken at a cross section of the shape perpendicular to the bend axis.
3.2.4 bent glass—flat glass that has been shaped while hot into a body having curved surfaces.
3.2.5 chord—a straight line segment that joins two points of an arc.
3.2.6 complex bend—a profile shape composed of curvature not easily defined by multiple radii that can result in a bent shape on
one or more axis, typically defined by model or mold.mold; see Fig. 1.
3.2.7 compound bend—a profile shape composed of curvature of more than one radii,radius, curved on two or more axes.
3.2.8
...