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ASTM C149-86(2005)

(Test Method)

Standard Test Method for Thermal Shock Resistance of Glass Containers

Standard Test Method for Thermal Shock Resistance of Glass Containers

ABSTRACT
This test method covers the determination of the relative thermal shock resistance of commercial bottles and jars and is intended to apply to all types of glass containers that are required to withstand sudden changes in temperature in service. The test apparatus consists essentially of a basket for holding the glassware upright, a hot water tank, a cold water tank, and a timed means for immersing and transferring the basket from the hot to the cold bath. Indicating controllers or dial thermometers should be used to maintain the temperatures of the baths. Test procedures included in this specification include pass tests, progressive tests to a predetermined percent of breakage, total progressive tests, and high-level tests.
SCOPE
1.1 This test method covers the determination of the relative resistance of commercial glass containers (bottles and jars) to thermal shock and is intended to apply to all types of glass containers that are required to withstand sudden temperature changes (thermal shock) in service such as in washing, pasteurization, or hot pack processes, or in being transferred from a warm to a colder medium or vice versa .  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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
31-Aug-2005
ICS
81.040.30 - Glass products
Technical Committee
C14 - Glass and Glass Products
Drafting Committee
C14.07 - Glass Containers
Current Stage
Ref Project

Relations

Replaces
ASTM C149-86(2000) - Standard Test Method for Thermal Shock Resistance of Glass Containers
Effective Date
01-Sep-2005
Replaced By
ASTM C149-86(2010) - Standard Test Method for Thermal Shock Resistance of Glass Containers
Effective Date
01-Mar-2010
Referred By
ASTM F2179-20 - Standard Specification for Annealed Soda-Lime-Silicate Glass Containers That Are Produced for Use as Candle Containers
Effective Date
01-Sep-2005
Referred By
ASTM C224-78(2020) - Standard Practice for Sampling Glass Containers
Effective Date
01-Sep-2005

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ASTM C149-86(2005) - Standard Test Method for Thermal Shock Resistance of Glass ContainersASTM C149-86(2005) - Standard Test Method for Thermal Shock Resistance of Glass Containers
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ASTM C149-86(2005) - Standard Test Method for Thermal Shock Resistance of Glass Containers
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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.
Designation:C149–86 (Reapproved 2005)
Standard Test Method for
Thermal Shock Resistance of Glass Containers
This standard is issued under the fixed designation C149; 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 Department of Defense.
1. Scope bottles from the hot to the cold bath. A suitable type of
apparatus is illustrated in Fig. 1.
1.1 This test method covers the determination of the relative
3.2 A device shall be provided to maintain the temperature
resistance of commercial glass containers (bottles and jars) to
of the baths within 61.1°C (2°F) of the specified temperatures.
thermal shock and is intended to apply to all types of glass
Indicating controllers that control the heating of the hot water
containers that are required to withstand sudden temperature
and the cooling of the cold water are recommended. Otherwise
changes (thermal shock) in service such as in washing,
dial thermometers should be attached and the temperatures
pasteurization, or hot pack processes, or in being transferred
controlled manually.
from a warm to a colder medium or vice versa.
3.3 The capacity of each tank shall be at least 3.8 L (1 gal)
1.2 The values stated in SI units are to be regarded as the
for each 0.45 kg (1 lb) of glass tested.
standard. The values given in parentheses are for information
only.
4. Sampling
1.3 This standard does not purport to address all of the
4.1 Methods of sampling a minimum lot from a group of
safety concerns, if any, associated with its use. It is the
containers of a given type are given in Practice C224, for the
responsibility of the user of this standard to establish appro-
various situations to which it may apply.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Procedure
5.1 Adjustthetemperaturesofthebathssothatthecoldbath
2. Referenced Documents
is at 21°C (70°F) and the hot bath is at a temperature hotter
2.1 ASTM Standards:
thanthecoldbathbyaspecifieddifferential.(Inmostcasesthis
C224 Practice for Sampling Glass Containers
differential will be 42°C (75°F) for the first immersion (Note
2.2 ASTM Adjuncts:
1). Fill, or partially fill, the basket, with empty bottles, and
ADJC0149 Apparatus for thermal shock test of glass con-
3 when the temperatures of the baths are within 6 1.1°C (2°F) of
tainers (6 Drawings)
those specified immerse the basket in the hot bath in such a
3. Apparatus manner that the bottles become completely filled with hot
water, allow to soak for 5 min, transfer to the cold bath, and
3.1 The apparatus shall consist essentially of a basket for
immerse for 30 s, and then remove from the cold bath. Control
holding the glassware upright, two tanks, one containing hot
the 5-min immersion in the hot bath within 10 s, and the time
water and one containing cold water, and an automatically
of transfer from the hot to the cold bath shall be 15 61s.
timed means for immersing and transferring the basket of
During the test, protect the apparatus from drafts in a sheltered
area. Observe the number of containers failing in the test by
individual inspection of each.
This method is under the jurisdiction of ASTM Committee C14 on Glass and
NOTE 1—If a cold bath temperature other than 21°C (70°F) is used, the
Glass Products and is the direct responsibility of Subcommittee C14.07 on Glass
Containers. specifieddifferentialmaybedecreased(increased)by0.5°C(1°F)foreach
Current edition approved Sept. 1, 2005. Published October 2005. Originally
increase (decrease) of 5.6°C (10°F) above (below) the recommended cold
approvedin1939.Lastpreviouseditionapprovedin2000asC149–86(2000).DOI:
bath temperature.
10.1520/C0149-86R05.
5.2 Use one of the following test procedures depending
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@ast
...

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This test method covers the determination of the relative thermal shock resistance of commercial bottles and jars and is intended to apply to all types of glass containers that are required to withstand sudden changes in temperature in service. The test apparatus consists essentially of a basket for holding the glassware upright, a hot water tank, a cold water tank, and a timed means for immersing and transferring the basket from the hot to the cold bath. Indicating controllers or dial thermometers should be used to maintain the temperatures of the baths. Test procedures included in this specification include pass tests, progressive tests to a predetermined percent of breakage, total progressive tests, and high-level tests.
SCOPE
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1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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1.1 This test method covers the determination of the density of glasses at or near 25 °C, by buoyancy.  
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SCOPE
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SCOPE
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1.2 This practice applies to vertical and sloped glazing in buildings for which the specified design loads consist of wind load, snow load and self-weight with a total combined magnitude less than or equal to 15 kPa (315 psf). This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves.  
1.3 This practice applies only to monolithic and laminated glass constructions of rectangular shape with continuous lateral support along one, two, three, or four edges. This practice assumes that (1) the supported glass edges for two, three, and four-sided support conditions are simply supported and free to slip in plane; (2) glass supported on two sides acts as a simply supported beam; and (3) glass supported on one side acts as a cantilever. For insulating glass units, this practice only applies to insulating glass units with four-sided edge support.  
1.4 This practice does not apply to any form of wired, patterned, sandblasted, drilled, notched, or grooved glass. This practice does not apply to glass with surface or edge treatments that reduce the glass strength.
Note 1: Ceramic enamel is known to affect glass load resistance. Consult the manufacturer for guidance.  
1.5 This practice addresses only the determination of the resistance of glass to uniform lateral loads. The final thickness and type of glass selected also depends upon a variety of other factors (see 6.3).  
1.6 Charts in this practice provide a means to determine approximate maximum lateral glass deflection. Appendix X1 provides additional procedures to determine maximu...

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  • Standard
    65 pages
    English language
    sale 15% off