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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
14-Mar-2012
Technical Committee
Drafting Committee
Current Stage
Ref Project

Relations

Effective Date
15-Mar-2012

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ASTM C1048-12e1 - Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass
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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
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Designation:C1048 −12
Standard Specification for
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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.
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ε NOTE—Section 9 was updated editorially in November 2012.
1. Scope Polarizing Microscope and Optical Retardation Compen-
sation Procedures
1.1 This specification covers the requirements for mono-
C1036Specification for Flat Glass
lithic flat heat-strengthened and fully tempered coated and
C1203TestMethodforQuantitativeDeterminationofAlkali
uncoated glass produced on a horizontal tempering system
Resistance of a Ceramic-Glass Enamel
used in general building construction and other applications.
C1279Test Method for Non-Destructive Photoelastic Mea-
1.2 This specification does not address bent glass, or heat-
surement of Edge and Surface Stresses in Annealed,
strengthened or fully tempered glass manufactured on a verti-
Heat-Strengthened, and Fully Tempered Flat Glass
cal tempering system.
C1376Specification for Pyrolytic and Vacuum Deposition
Coatings on Flat Glass
1.3 The dimensional values stated in SI units are to be
regardedasthestandard.Theunitsgiveninparenthesesarefor E1300PracticeforDeterminingLoadResistanceofGlassin
Buildings
information only.
1.4 The following safety hazards caveat pertains only to the 2.2 ANSI Standard:
test method portion, Section 10, of this specification:This Z97.1Safety Performance Specifications and Methods of
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standard does not purport to address all of the safety concerns, Test for Safety Glazing Materials Used in Buildings
if any, associated with its use. It is the responsibility of the user
2.3 Other Documents:
of this standard to establish appropriate safety and health
CPSC 16 CFR 1201 Safety Standard for Architectural
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practices and determine the applicability of regulatory limita-
Glazing Materials
tions prior to use.
3. Terminology
2. Referenced Documents
3.1 Definitions—For definitions of terms used in this
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2.1 ASTM Standards: ,
specification, refer to Terminology C162 and Specification
C162Terminology of Glass and Glass Products
C1036.
C346Test Method for 45-deg Specular Gloss of Ceramic
3.2 Definitions of Terms Specific to This Standard:
Materials
3.2.1 bow, n—the deviation in flatness of a lite of glass,
C724Test Method for Acid Resistance of Ceramic Decora-
expressed over the entire width or length dimension of the
tions on Architectural-Type Glass
glass or over a smaller, local area (see 10.7 for measurement
C978Test Method for Photoelastic Determination of Re-
technique). Also known as warp.
sidual Stress in a Transparent Glass Matrix Using a
3.2.2 heat-treated glass, n—a term used to reference both
heat-strengthened and fully tempered glass.
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This specification is under the jurisdiction ofASTM Committee C14 on Glass
3.2.3 heat-treating, v—the process of heating and cooling
and Glass Products and is the direct responsibility of Subcommittee C14.08 on Flat
annealed glass in a tempering system to produce either
Glass.
heat-strengthened or fully tempered glass.
Current edition approved March 15, 2012. Published May 2012. Originally
approved in 1985. Last previous edition approved in 2004 as C1048–04. DOI:
10.1520/C1048-12E01.
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Reference to these documents shall be the latest issue unless otherwise
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specified by the authority applying this specification. Available from American National Standards Institute, 25 W. 43rd St., 4th
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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 service@astm.org. For Annual Book of ASTM in electronic format at www.ansiz97.com.
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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
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C1048−12
3.2.4 thermal stress, n—edge stress caused by thermal 6. Ordering Information
gradients across the glass surface.
6.1 Purchasersshouldselectthepreferredoptionspermitted
in this specification and include the following information in
4. Classification
procurement documents:
6.1.1 Number, date, and title of this specification.
4.1 Kinds—Flat glass furnished under this specification
shall be of the following kinds, as speci
...

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