ASTM C824-91(2005)

Standard Practice for Specimen Preparation for Determination of Linear Thermal Expansion of Vitreous Glass Enamels and Glass Enamel Frits by the Dilatometer Method

SIGNIFICANCE AND USE
The dilatometer method of measuring linear thermal expansion of vitreous glass enamels and glass enamel frits has the advantage of simplicity, lends itself to automatic, self-recording arrangements, and requires test specimens of simple configuration.
SCOPE
1.1 This practice covers the preparation of vitreous glass enamels and glass enamel frit specimens for the measurement of linear thermal expansion using Test Method E228.
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. For specific hazard statements, see Section 6.

General Information

• Status: Historical
• Publication Date: 31-Aug-2005
• ICS: 25.220.50 - Enamels
• Technical Committee: C14 - Glass and Glass Products
• Drafting Committee: C14.10 - Glass Decoration

Relations

• Replaces: ASTM C824-91(2000) - Standard Practice for Specimen Preparation for Determination of Linear Thermal Expansion of Vitreous Glass Enamels and Glass Enamel Frits by the Dilatometer Method
• Effective Date: 01-Sep-2005
• Replaced By: ASTM C824-91(2010) - Standard Practice for Specimen Preparation for Determination of Linear Thermal Expansion of Vitreous Glass Enamels and Glass Enamel Frits by the Dilatometer Method
• Effective Date: 01-Mar-2010

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C824–91(Reapproved 2005)
Standard Practice for
Specimen Preparation for Determination of Linear Thermal
Expansion of Vitreous Glass Enamels and Glass Enamel
Frits by the Dilatometer Method
This standard is issued under the fixed designation C824; 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 practice covers the preparation of vitreous glass
enamels and glass enamel frit specimens for the measurement
of linear thermal expansion using Test Method E228.
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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard
statements, see Section 6.
2. Referenced Documents
2.1 ASTM Standards:
E228 Test Method for Linear Thermal Expansion of Solid
Materials With a Push-Rod Dilatometer
3. Significance and Use NOTE 1—Material: No. 316 stainless steel.
FIG. 1 Powder Pressing Die
3.1 The dilatometer method of measuring linear thermal
expansion of vitreous glass enamels and glass enamel frits has
the advantage of simplicity, lends itself to automatic, self-
so designed that the temperature variation over the length of
recording arrangements, and requires test specimens of simple
the test specimen shall be less than 2°C during the entire range
configuration.
of heating.
4.4 Scale or Caliper, capable of measuring the length of the
4. Apparatus
test specimen to an accuracy of 0.1 %.
4.1 Powder Pressing Die, whose top and bottom sections
5. Reagents and Materials
are free to move such that density variations within the bar are
minimized (see Fig. 1).
5.1 Hydroxypropyl Cellulose Solution in Water
4.2 Hydraulic Press.
(1 weight% ).
4.3 Furnace, for firing test specimen, electrically heated and
5.2 Powder Sample.
controlled to a minimum rate of heating of 1°C/min from room
6. Hazards
temperature to the maximum temperature of the test. It shall be
6.1 Appropriate ventilation should be provided when han-
dling powdered frits or enamels containing toxic ingredients.
This practice is under the jurisdiction of ASTM Committee C14 on Glass and
6.2 Ingestion or inhalation of test materials should be
Glass Products and is the direct responsibility of Subcommittee C14.10 on Glass
avoided. Protective clothing such as gloves, respirators, etc.,
Decoration.
Current edition approved Sept. 1, 2005. Published October 2005. Originally
may be advisable. If in
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