ASTM C162-03
(Terminology)Standard Terminology of Glass and Glass Products
Standard Terminology of Glass and Glass Products
SCOPE
1.1 This terminology defines terms generally used in the glass industry.
1.2 In some cases in which a usage is specific to a ceertain industry, that is spelled out within the definition. For completeness and hisotrical purposes, terms that are outdated are listed as being archaic. The reader is cautioned that some companies or industries may define or use terms differently than the way these terms are defined within this terminology.
1.3 Other sources of glass glossaries are Glass Association of North America's Glazing Manual, Engineering Standards Manual for Tempered Glass, Laminated Glass Design Guide,and ASTM Committee C-14 standards.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 162 – 03
Standard Terminology of
1
Glass and Glass Products
This standard is issued under the fixed designation C 162; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope lines at 486.1 and 656.3 nm, respectively. See synonymous
term nu-value and related term dispersion.
1.1 This terminology defines terms generally used in the
acid polishing—the polishing of a glass surface by acid
glass industry.
treatment.
1.2 In some cases in which a usage is specific to a certain
air bells—bubbles of irregular shape formed generally during
industry, that is spelled out within the definition. For complete-
the pressing or molding operations in the manufacture of
ness and historical purposes, terms that are outdated are listed
optical glass.
as being archaic. The reader is cautioned that some companies
alabaster glass—a milky-white glass that diffuses light with-
or industries may define or use terms differently than the way
out fiery color.
these terms are defined within this terminology.
alcove—a narrow channel to convey molten glass from refiner
1.3 Other sources of glass glossaries are Glass Association
2
to forehearth or to the revolving pot where it is gathered by
of North America’s Glazing Manual, Engineering Standards
2
the Owens machine.
Manual for Tempered Glass, Laminated Glass Design
2
alkali—an industrial term for the oxide of sodium or potas-
Guide, and ASTM Committee C-14 standards.
sium; less frequently of lithium.
2. Referenced Documents
ampoule—a glass container designed to be filled and sealed by
fusion of the glass neck.
2.1 ASTM Standards:
anneal—to attain acceptably low stresses, or desired structure,
C 148 Test Methods for Polariscopic Examination of Glass
3
or both, in glass by controlled cooling from a suitable
Containers
temperature.
C 336 Test Method for Annealing Point and Strain Point of
3
annealing—a controlled cooling process for glass designed to
Glass by Fiber Elongation
3
reduce residual stress to a commercially acceptable level and
C 338 Test Method for Softening Point of Glass
modify structure.
C 598 Test Method for Annealing Point and Strain Point of
3
annealing point (A.P.)—that temperature corresponding either
Glass by Beam Bending
to a specific rate of elongation of a glass fiber when
C 1048 Specification for Heat-Treated Glass—Kind HS,
3
measured by Test Method C 336, or a specific rate of
Kind FT Coated and Uncoated Glass
midpoint deflection of a glass beam when measured by Test
C 1172 Specification for Laminated Architectural Flat
3
Method C 598. At the annealing point of glass, internal
Glass
stresses are substantially relieved in a matter of minutes.
3. Terminology
annealing range—the range of glass temperature in which
stress in glass can be relieved at a commercially practical
Abbé value—the reciprocal dispersive power, a value used in
rate. For purposes of comparing glasses, the annealing range
optical design, expressed mathematically as:
is assumed to correspond with the temperature between the
Abbé value5~n 2 1!/~n 2 n !
d F C
annealing point (A.P.) and the strain point (St.P.).
where n is the refractive index for the helium line at 587.6
d
antimony—an industrial term for an oxide of antimony.
nm and n and n are the refractive indices for the hydrogen
F C
arch, n—a part of a melter; a crown.
arch, v—to heat a pot in a pot arch.
arrest mark—See dwell mark.
1
This terminology is under the jurisdiction of ASTM Committee C14 on Glass
arsenic—an industrial term for an oxide of arsenic.
and Glass Products and is the direct responsibility of Subcommittee C14.01 on
Nomenclature and Definitions. aventurine—glass containing colored, opaque spangles of
Current edition approved July 10, 2003. Published August 2003. Originally
nonglassy material.
approved in 1941. Last previous edition approved in 1999 as C 162 – 99.
back wall—the wall at the charging end of a melter.
2
Glass Association of North America, 3310 S.W. Harrison, Topeka, KS
66611-2279.
3
Annual Book of ASTM Standards, Vol 15.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C 162–03
baffle—a mold part used to close the delivery or baffle hole in blanket feed—a method for charging batch designed to
a blank mold. produce an even distribution of batch across the width of the
baffle mark—a mark or seam on a bottle resulting from a mold melter.
joint between blank mold and baffle. blank mold—the metal mold
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.