ASTM C1203-04(2014)
(Test Method)Standard Test Method for Quantitative Determination of Alkali Resistance of a Ceramic-Glass Enamel
Standard Test Method for Quantitative Determination of Alkali Resistance of a Ceramic-Glass Enamel
SIGNIFICANCE AND USE
5.1 This test method is intended to be used when a quantitative measurement of the alkali durability of a ceramic-glass enamel is needed. The test is applicable to glass coated with fired enamels where exposure to strong alkalis, or alkalis at elevated temperatures might be encountered in service.
5.2 This test method is intended to be an accelerated, destructive test. Results can be used as an indicator of the relative durability of a particular enamel.
SCOPE
1.1 This test method covers the determination of the resistance of a fired ceramic-glass enamel to a 10 % alkali solution held near its boiling point for 2 h.
1.2 This test method is not applicable to large tempered glass sheets or specimens larger than 9 by 9 cm.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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 9.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C1203 − 04 (Reapproved 2014)
Standard Test Method for
Quantitative Determination of Alkali Resistance of a
Ceramic-Glass Enamel
This standard is issued under the fixed designation C1203; 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 3.1.3 maturity—of a fired ceramic glass enamel, a ceramic
glass enamel has been fired to maturity when porosity of the
1.1 This test method covers the determination of the resis-
ceramic glass enamel has been substantially eliminated, and
tance of a fired ceramic-glass enamel to a 10 % alkali solution
theexpectedsurfaceglossofthefiredceramicglassenamelhas
held near its boiling point for 2 h.
been achieved.
1.2 This test method is not applicable to large tempered
3.1.3.1 Discussion—Refer to GTA Engineering Standards
glass sheets or specimens larger than 9 by 9 cm.
Manual, Section 4, D.3.3.1 and D.3.4.1, for testing criteria for
1.3 The values stated in SI units are to be regarded as maturity.
standard. No other units of measurement are included in this
standard. 4. Summary of Test Method
1.4 This standard does not purport to address all of the
4.1 This test method measures the weight loss of a glass
safety concerns, if any, associated with its use. It is the
specimen decorated with a fired ceramic-glass enamel, when
responsibility of the user of this standard to establish appro-
completely immersed in a 10 % alkali solution near its boiling
priate safety and health practices and determine the applica-
point. A stainless steel beaker containing test samples and a
bility of regulatory limitations prior to use. For specific hazard
10 % alkali solution is heated at 95°C in a temperature
statements, see Section 9.
controlled water bath for 2 h. Chemical dissolution of the
ceramic-glass-enamel coating as well as any loss of weight due
2. Referenced Documents
to the dissolution of the substrate is measured by determining
2.1 ASTM Standards:
weight loss of the specimen after exposure to the hot alkali
C162 Terminology of Glass and Glass Products
solution. Asubstrate without ceramic-glass enamel is tested to
C927 Test Method for Lead and Cadmium Extracted from
determine the expected weight loss due to dissolution of the
the Lip and Rim Area of Glass Tumblers Externally
nondecorated side of the substrate.
Decorated with Ceramic Glass Enamels
E691 Practice for Conducting an Interlaboratory Study to
5. Significance and Use
Determine the Precision of a Test Method
5.1 This test method is intended to be used when a quanti-
tative measurement of the alkali durability of a ceramic-glass
3. Terminology
enamel is needed. The test is applicable to glass coated with
3.1 Definitions:
fired enamels where exposure to strong alkalis, or alkalis at
3.1.1 For additional definitions of terms refer to Terminol-
elevated temperatures might be encountered in service.
ogy C162.
5.2 This test method is intended to be an accelerated,
3.1.2 ceramic glass enamels (also glass enamels or ceramic
destructive test. Results can be used as an indicator of the
enamels)—predominantly colored, silicate-glass fluxes used to
relative durability of a particular enamel.
decorate glassware. C927
6. Interferences
This test method is under the jurisdiction of ASTM Committee C14 on Glass
and Glass Products and is the direct responsibility of Subcommittee C14.10 on
6.1 The extent to which an enamel has been fired to
Glass Decoration.
maturity, as well as the residual stresses remaining after
Current edition approved May 1, 2014. Published May 2014. Originally
annealing of test specimen, can influence results.
approved in 1991. Last previous edition approved in 2009 as C1203 – 04 (2009).
DOI: 10.1520/C1203-04R14.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on GTA Engineering Standards Manual, Glass Tempering Association, Topeka,
the ASTM website. KS, 1992.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1203 − 04 (2014)
6.2 Tests performed on tempered or heat-strengthened pro- 9. Hazards
duction ware should be done by annealing the chosen sheet
9.1 Refer to the manufacturer’s Material Safety Data Sheets
before cutting the specimen.
for information regarding these materials.
9.2 A proper fume hood should be used when handling hot
7. Apparatus
caustic solutions. Chemically resistant gloves, eye protection,
7.1 Balance or Scale, accurate to 0.1 g, to weigh reagents.
and clothing should be worn, and tongs should be used. If
7.2 Balance, accurate to 0.1 mg, to weigh specimens.
accidental contact with caustic is encountered, or if ingestion
occurs, seek medical attention immediately.
7.3 Waterbath, temperature controlled, capable of holding
95 6 3°C.
10. Test Specimen
7.4 Glass Marking Scribe.
10.1 The specimen to be tested should be glass decorated
7.5 Beaker, stainless steel, 1200-mL, with no pouring lip, as
withceramicglassenamel,andannealedtorelievestressesthat
shown in Fig. 1.
could cause chipping or cracking during the test. Test a
7.6 Cover, stainless steel, for beaker.
nondecorated specimen representative of the decorated sub-
strate along with the decorated specimens as a control.
7.7 Sample Holder, as shown in Fig. 1.
10.2 Cut a specimen with a diamond saw or glass cutter to
7.8 Tongs, heavy duty.
a size that will easily fit into a 1200-mL, stainless steel beaker.
7.9 Rubber Gloves, chemically resistant.
Microscopeslideswhichare5by7.5cmcanbeused.Similarly
7.10 Apron or Lab Coat, chemically resistant.
sized glass or sections of fired ware can also be used. The test
specimen should be small enough for accurate weighing to the
7.11 Face Shield.
nearest 0.1 mg.
7.12 Fume
...
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