ASTM C1048-18

Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass

ABSTRACT
This specification covers heat-treated flat glass - kind HS, kind FT coated and uncoated glass used in general building construction. Glass furnished under this specification shall be of the following conditions: condition A - uncoated surfaces, condition B - spandrel glass, one surface ceramic coated, and condition C - other coated glass. Flat glass furnished under this specification shall be of the following kinds: kind HS - heat-strengthened glass shall be flat glass, either transparent or patterned, in accordance with the applicable requirements, and kind FT - fully tempered glass shall be flat glass, either transparent or patterned in accordance with the applicable requirements. All fabrication, such as cutting to overall dimensions, edgework, drilled holes, notching, grinding, sandblasting, and etching, shall be performed before strengthening or tempering and shall be as specified. Requirements for fittings and hardware shall be as specified. In heat-strengthened and fully tempered glass, a strain pattern, which is not normally visible, may become visible under certain light conditions. The support system and the amount of glass deflection for a given set of wind-load conditions must be considered for design purposes. Heat-treated flat glass cannot be cut after tempering. Heat-treated glass can be furnished with holes, notches, cutouts, and bevels. The expansion fit and porosity of the ceramic coating shall be tested to meet the requirements prescribed. Specimens for evaluation of resistance to alkali and acid shall be prepared and tested to meet the requirements prescribed.
SCOPE
1.1 This specification covers the requirements for monolithic flat heat-strengthened and fully tempered coated and uncoated glass produced on a horizontal tempering system used in general building construction and other applications.  
1.2 This specification does not address bent glass, or heat-strengthened or fully tempered glass manufactured on a vertical tempering system.  
1.3 The dimensional values stated in SI units are to be regarded as the standard. The units given in parentheses are for information only.  
1.4 The following safety hazards caveat pertains only to the test method portion, Section 10, 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.  
1.5 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: Published
• Publication Date: 30-Sep-2018
• ICS: 81.040.30 - Glass products
• Technical Committee: C14 - Glass and Glass Products
• Drafting Committee: C14.08 - Flat Glass

Relations

• Refers: ASTM C162-05(2015) - Standard Terminology of<brk type="line"/> Glass and Glass Products
• Effective Date: 01-Nov-2015
• Refers: ASTM C978-04(2019) - Standard Test Method for Photoelastic Determination of Residual Stress in a Transparent Glass Matrix Using a Polarizing Microscope and Optical Retardation Compensation Procedures
• Effective Date: 01-Feb-2019
• Refers: ASTM C1203-04(2019) - Standard Test Method for Quantitative Determination of Alkali Resistance of a Ceramic-Glass Enamel
• Effective Date: 01-Feb-2019
• Refers: ASTM C724-91(2015) - Standard Test Method for Acid Resistance of Ceramic Decorations on Architectural-Type Glass
• Effective Date: 01-May-2015
• Refers: ASTM C724-91(2020) - Standard Test Method for Acid Resistance of Ceramic Decorations on Architectural-Type Glass
• Effective Date: 01-Aug-2020
• Referred By: ASTM E3120-19 - Standard Specification for Evaluating Accelerated Aging Performance of Environmentally Controlled Dynamic Glazings
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1651-11(2018) - Standard Test Method for Measurement of Roll Wave Optical Distortion in Heat-Treated Flat Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1279-13(2019) - Standard Test Method for Non-Destructive Photoelastic Measurement of Edge and Surface Stresses in Annealed, Heat-Strengthened, and Fully Tempered Flat Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM E772-15(2021) - Standard Terminology of Solar Energy Conversion
• Effective Date: 01-Oct-2018
• Referred By: ASTM E998-19 - Standard Test Method for Structural Performance of Architectural Glass Products Under the Influence of Uniform Static Loads
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1464-21 - Standard Specification for Bent Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1901-21e2 - Standard Test Method for Measuring Optical Retardation in Flat Architectural Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1349-17 - Standard Specification for Architectural Flat Glass Clad Polycarbonate
• Effective Date: 01-Oct-2018
• Referred By: ASTM F3007-19 - Standard Test Method for Ball Drop Impact Resistance of Laminated Architectural Flat Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM F2248-19 - Standard Practice for Specifying an Equivalent 3-Second Duration Design Loading for Blast Resistant Glazing Fabricated with Laminated Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM F3561-23 - Standard Test Method for Forced-Entry-Resistance of Fenestration Systems After Simulated Active Shooter Attack
• Effective Date: 01-Oct-2018
• Referred By: ASTM E2751/E2751M-21 - Standard Practice for Design and Performance of Supported Laminated Glass Walkways
• Effective Date: 01-Oct-2018
• Referred By: ASTM F1882-15 - Standard Specification for Residential Basketball Systems
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1900-20 - Standard Practice for Weathering and Evaluation of Laminated Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM E1300-16 - Standard Practice for Determining Load Resistance of Glass in Buildings
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1401-23 - Standard Guide for Structural Sealant Glazing
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1172-19 - Standard Specification for Laminated Architectural Flat Glass
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1652/C1652M-21 - Standard Test Method for Measuring Optical Distortion in Flat Glass Products Using Digital Photography of Grids
• Effective Date: 01-Oct-2018
• Referred By: ASTM F782-19 - Standard Specification for Doors, Furniture, Marine
• Effective Date: 01-Oct-2018
• Referred By: ASTM C1376-21a - Standard Specification for Pyrolytic and Vacuum Deposition Coatings on Flat Glass
• Effective Date: 01-Oct-2018

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:C1048 −18
Standard Specification for
1
Heat-Strengthened and Fully Tempered Flat Glass
This standard is issued under the fixed designation C1048; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope C724Test Method for Acid Resistance of Ceramic Decora-
tions on Architectural-Type Glass
1.1 This specification covers the requirements for mono-
C978Test Method for Photoelastic Determination of Re-
lithic flat heat-strengthened and fully tempered coated and
sidual Stress in a Transparent Glass Matrix Using a
uncoated glass produced on a horizontal tempering system
Polarizing Microscope and Optical Retardation Compen-
used in general building construction and other applications.
sation Procedures
1.2 This specification does not address bent glass, or heat-
C1036Specification for Flat Glass
strengthened or fully tempered glass manufactured on a verti-
C1203TestMethodforQuantitativeDeterminationofAlkali
cal tempering system.
Resistance of a Ceramic-Glass Enamel
C1279Test Method for Non-Destructive Photoelastic Mea-
1.3 The dimensional values stated in SI units are to be
regardedasthestandard.Theunitsgiveninparenthesesarefor surement of Edge and Surface Stresses in Annealed,
Heat-Strengthened, and Fully Tempered Flat Glass
information only.
C1376Specification for Pyrolytic and Vacuum Deposition
1.4 The following safety hazards caveat pertains only to the
Coatings on Flat Glass
test method portion, Section 10, of this specification: This
E1300PracticeforDeterminingLoadResistanceofGlassin
standard does not purport to address all of the safety concerns,
Buildings
if any, associated with its use. It is the responsibility of the user
2.2 ANSI Standard:
of this standard to establish appropriate safety, health, and
Z97.1Safety Performance Specifications and Methods of
environmental practices and determine the applicability of
4
Test for Safety Glazing Materials Used in Buildings
regulatory limitations prior to use.
2.3 Other Documents:
1.5 This international standard was developed in accor-
CPSC 16 CFR 1201 Safety Standard for Architectural
dance with internationally recognized principles on standard-
5
Glazing Materials
ization established in the Decision on Principles for the
GANA 01-0116Proper Procedures for Cleaning Architec-
Development of International Standards, Guides and Recom-
tural Glass Products
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions—For definitions of terms used in this
2. Referenced Documents
specification, refer to Terminology C162 and Specification
2,3
2.1 ASTM Standards:
C1036.
C162Terminology of Glass and Glass Products
3.2 Definitions of Terms Specific to This Standard:
C346Test Method for 45-deg Specular Gloss of Ceramic
3.2.1 bow—the deviation in flatness of a lite of glass,
Materials
expressed over the entire width or length dimension of the
glass or over a smaller, local area (see 10.7 for measurement
1
This specification is under the jurisdiction ofASTM Committee C14 on Glass technique).
and Glass Products and is the direct responsibility of Subcommittee C14.08 on Flat
3.2.2 coating voids, condition B—uncoated areas forming
Glass.
unintentional discernable irregularities in the intended flood
Current edition approved Oct. 1, 2018. Published November 2018. Originally
ε1
approved in 1985. Last previous edition approved in 2012 as C1048–12a . DOI:
coat, pattern, or image.
10.1520/C1048-18.
2
Reference to these documents shall be the latest issue unless otherwise
4
specified by the authority applying this specification. Available from American National Standards Institute, 25 W. 43rd St., 4th
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Floor, NewYork, NY10036, and theAccredited Standards Committee Z97 website
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM in electronic format at www.ansiz97.com.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Superintendent of Documents, U.S. Government Printing
the ASTM website. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1048−18
3.2.3 edge curl (also edge lift, edge kink)—an
...

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: C1048 − 12 C1048 − 18
Standard Specification for
1
Heat-Strengthened and Fully Tempered Flat Glass
This standard is issued under the fixed designation C1048; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1
ε NOTE—Section 9 was updated editorially in November 2012.
1. Scope
1.1 This specification covers the requirements for monolithic flat heat-strengthened and fully tempered coated and uncoated
glass produced on a horizontal tempering system used in general building construction and other applications.
1.2 This specification does not address bent glass, or heat-strengthened or fully tempered glass manufactured on a vertical
tempering system.
1.3 The dimensional values stated in SI units are to be regarded as the standard. The units given in parentheses are for
information only.
1.4 The following safety hazards caveat pertains only to the test method portion, Section 10, 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.
1.5 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 ,3
2.1 ASTM Standards: ,
C162 Terminology of Glass and Glass Products
C346 Test Method for 45-deg Specular Gloss of Ceramic Materials
C724 Test Method for Acid Resistance of Ceramic Decorations on Architectural-Type Glass
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
C1203 Test Method for Quantitative Determination of Alkali Resistance of a Ceramic-Glass Enamel
C1279 Test Method for Non-Destructive Photoelastic Measurement of Edge and Surface Stresses in Annealed, Heat-
Strengthened, and Fully Tempered Flat Glass
C1376 Specification for Pyrolytic and Vacuum Deposition Coatings on Flat Glass
E1300 Practice for Determining Load Resistance of Glass in Buildings
2.2 ANSI Standard:
4
Z97.1 Safety Performance Specifications and Methods of Test for Safety Glazing Materials Used in Buildings
2.3 Other Documents:
5
CPSC 16 CFR 1201 Safety Standard for Architectural Glazing Materials
GANA 01-0116 Proper Procedures for Cleaning Architectural Glass Products
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 March 15, 2012Oct. 1, 2018. Published May 2012November 2018. Originally approved in 1985. Last previous edition approved in 20042012
ε1
as C1048 – 04.C1048 – 12a . DOI: 10.1520/C1048-12E01.10.1520/C1048-18.
2
Reference to these documents shall be the latest issue unless otherwise specified by the authority applying this specification.
3
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.
4
Available from American National Standards Institute, 25 W. 43rd St., 4th Floor, New York, NY 10036, and the Accredited Standards Committee Z97 website in electronic
format at www.ansiz97.com.
5
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1048 − 18
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Terminology C162 and Specification C1036.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 bow, bow—n—the deviation in flatness of a lite of glass, expressed over the
...