ASTM C1422/C1422M-20

Standard Specification for Chemically Strengthened Flat Glass

SCOPE
1.1 This specification covers the requirements for chemically strengthened glass products that are used in general building construction, transportation, solar, and other electronic applications, such as PC screens, notebooks, tablets, smart phones, and E-readers, as well as copy machine scanners, computer disks, and flat glass screens for television monitors. The technique covered in this specification usually involves conducting ion exchange of constituent alkali ions in a glass product by immersing it in a bath of molten salt containing larger alkali ions. Penetration of the larger ions into smaller host sites produces a layer of compression on the surface which strengthens the glass. Techniques such as ion implantation, dealkalization, etch-strengthening, and glaze coatings are specifically excluded from this specification.  
1.2 Classification of chemically strengthened glass products is based on the laboratory measurements of surface compression and case depth (depth of compression) and not on the modulus of rupture (MOR). This specification does not purport to address end-use performance.  
1.3 A test method for the measurement of case depth and surface compression is included in Section 8. Another test method for similar measurement using optically guided-wave equipment is included in Section 9.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.5 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.  
1.6 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: 14-Apr-2020
• ICS: 81.040.20 - Glass in building
• Technical Committee: C14 - Glass and Glass Products
• Drafting Committee: C14.08 - Flat Glass

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:C1422/C1422M −20
Standard Specification for
1
Chemically Strengthened Flat Glass
This standard is issued under the fixed designation C1422/C1422M; 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 1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This specification covers the requirements for chemi-
ization established in the Decision on Principles for the
cally strengthened glass products that are used in general
Development of International Standards, Guides and Recom-
building construction, transportation, solar, and other elec-
mendations issued by the World Trade Organization Technical
tronic applications, such as PC screens, notebooks, tablets,
Barriers to Trade (TBT) Committee.
smart phones, and E-readers, as well as copy machine
scanners, computer disks, and flat glass screens for television
2. Referenced Documents
monitors. The technique covered in this specification usually
2
involves conducting ion exchange of constituent alkali ions in
2.1 ASTM Standards:
a glass product by immersing it in a bath of molten salt
C162Terminology of Glass and Glass Products
containing larger alkali ions. Penetration of the larger ions into
C770Test Method for Measurement of Glass Stress—
smaller host sites produces a layer of compression on the
Optical Coefficient
surface which strengthens the glass. Techniques such as ion
C978Test Method for Photoelastic Determination of Re-
implantation, dealkalization, etch-strengthening, and glaze
sidual Stress in a Transparent Glass Matrix Using a
coatings are specifically excluded from this specification.
Polarizing Microscope and Optical Retardation Compen-
sation Procedures
1.2 Classificationofchemicallystrengthenedglassproducts
C1036Specification for Flat Glass
is based on the laboratory measurements of surface compres-
C1279Test Method for Non-Destructive Photoelastic Mea-
sion and case depth (depth of compression) and not on the
surement of Edge and Surface Stresses in Annealed,
modulusofrupture(MOR).Thisspecificationdoesnotpurport
Heat-Strengthened, and Fully Tempered Flat Glass
to address end-use performance.
C1648Guide for Choosing a Method for Determining the
1.3 A test method for the measurement of case depth and
Index of Refraction and Dispersion of Glass
surface compression is included in Section 8. Another test
E1967Test Method for the Automated Determination of
method for similar measurement using optically guided-wave
Refractive Index of Glass Samples Using the Oil Immer-
equipment is included in Section 9.
sion Method and a Phase Contrast Microscope
1.4 The values stated in either SI units or inch-pound units
F218Test Method for Measuring Optical Retardation and
are to be regarded separately as standard. The values stated in
Analyzing Stress in Glass
each system may not be exact equivalents; therefore, each 3
2.2 ANSI Standard:
system shall be used independently of the other. Combining
Z97.1-2015Z97.1-2015. Safety Glazing Materials Used In
values from the two systems may result in non-conformance
Buildings - Safety Performance SpecificationsAnd Meth-
with the standard.
ods Of Test
1.5 This standard does not purport to address all of the 4
2.3 Federal Document:
safety concerns, if any, associated with its use. It is the
CPSC 16CFR 1201Consumer Product Safety Commission
responsibility of the user of this standard to establish appro-
Safety Standard for Architectural Glazing Materials
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
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
1
This specification is under the jurisdiction ofASTM Committee C14 on Glass Standards volume information, refer to the standard’s Document Summary page on
and Glass Products and is the direct responsibility of Subcommittee C14.08 on Flat the ASTM website.
3
Glass. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Current edition approved April 15, 2020. Published April 2020. Originally 4th Floor, New York, NY 10036, http://www.ansi.org.
4
approved in 1999. Last previous edition approved in 2015 as C1422/C1422M–15. AvailablefromU.S.ConsumerProductSafetyCommission(CPSC),4330East
DOI: 10.1520/C1422_C1422M-20. West Hwy., Bethesda, MD 20814, http://www.cpsc.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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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.
Designation: C1422/C1422M − 15 C1422/C1422M − 20
Standard Specification for
1
Chemically Strengthened Flat Glass
This standard is issued under the fixed designation C1422/C1422M; 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 chemically strengthened glass products that are used in general building
construction, transportation, solar, and other electronic applications, such as PC screens, notebooks, tablets, smart phones, and
E-readers, as well as copy machine scanners, computer disks, and flat glass screens for television monitors. The technique covered
in this specification usually involves conducting ion exchange of constituent alkali ions in a glass product by immersing it in a bath
of molten salt containing larger alkali ions. Penetration of the larger ions into smaller host sites produces a layer of compression
on the surface which strengthens the glass. Techniques such as ion implantation, dealkalization, etch-strengthening, and glaze
coatings are specifically excluded.excluded from this specification.
1.2 Classification of chemically strengthened glass products is based on the laboratory measurements of surface (depth of
compression) compression and case depth (depth of compression) and not on the modulus of rupture (MOR). This specification
does not purport to address end-use performance.
1.3 A test method for the measurement of case depth and surface compression is included in Section 8. Another test method
for similar measurement using optically guided-wave equipment is included in Section 9.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.5 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.
1.6 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
C770 Test Method for Measurement of Glass Stress—Optical Coefficient
C978 Test Method for Photoelastic Determination of Residual Stress in a Transparent Glass Matrix Using a Polarizing
Microscope and Optical Retardation Compensation Procedures
C1036 Specification for Flat Glass
C1279 Test Method for Non-Destructive Photoelastic Measurement of Edge and Surface Stresses in Annealed, Heat-
Strengthened, and Fully Tempered Flat Glass
C1648 Guide for Choosing a Method for Determining the Index of Refraction and Dispersion of Glass
E1967 Test Method for the Automated Determination of Refractive Index of Glass Samples Using the Oil Immersion Method
and a Phase Contrast Microscope
F218 Test Method for Measuring Optical Retardation and Analyzing Stress in Glass
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 Nov. 1, 2015April 15, 2020. Published December 2015April 2020. Originally approved in 1999. Last previous edition approved in 20102015
as C1422/C1422M – 10.C1422/C1422M – 15. DOI: 10.1520/C1422_C1422M-15.10.1520/C1422_C1422M-20.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1422/C1422M − 20
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2.2 ANSI Standard:
Z97.1–2009Z97.1-2015 Z97.1-2015
...