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ASTM C385-58(1998)

(Test Method)

Standard Test Method for Thermal Shock Resistance of Porcelain-Enameled Utensils

Standard Test Method for Thermal Shock Resistance of Porcelain-Enameled Utensils

SCOPE
1.1 This test method covers the determination of the resistance of porcelain-enameled utensils to thermal shock. This test method is adaptable to any porcelain-enamel utensil that can be filled with water to a depth of 1 in. (25 mm).

General Information

Status
Historical
Publication Date
31-Dec-1997
ICS
25.220.50 - Enamels
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.12 - Materials for Porcelain Enamel and Ceramic-Metal Systems
Current Stage
Ref Project

Relations

Replaced By
ASTM C385-58(2004)e1 - Standard Test Method for Thermal Shock Resistance of Porcelain-Enameled Utensils
Effective Date
01-Aug-2004
Referred By
ASTM C286-22 - Standard Terminology Relating to Porcelain Enamel and Ceramic-Metal Systems
Effective Date
01-Jan-1998

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ASTM C385-58(1998) - Standard Test Method for Thermal Shock Resistance of Porcelain-Enameled UtensilsASTM C385-58(1998) - Standard Test Method for Thermal Shock Resistance of Porcelain-Enameled Utensils
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ASTM C385-58(1998) - Standard Test Method for Thermal Shock Resistance of Porcelain-Enameled Utensils
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 385 – 58 (Reapproved 1998)
Standard Test Method for
Thermal Shock Resistance of Porcelain-Enameled Utensils
This standard is issued under the fixed designation C 385; 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.
NOTE 2—“Identical utensils” signifies utensils of the same size, shape,
1. Scope
and finish.
1.1 This test method covers the determination of the resis-
tance of porcelain-enameled utensils to thermal shock. This
5. Preparations for Test
test method is adaptable to any porcelain-enamel utensil that
5.1 Level the hot plate. Switch on the hot plate and adjust
can be filled with water to a depth of 1 in. (25 mm).
the surface temperature to 475 6 10°F (245 6 5.5°C). Allow
1.2 This standard does not purport to address all of the
the hot plate to preheat at this temperature for at least1hto
safety concerns, if any, associated with its use. It is the
obtain a uniform temperature over the entire heating surface.
responsibility of the user of this standard to establish appro-
5.2 Place the quenching water in a large container. Adjust
priate safety and health practices and determine the applica-
the temperature of the water to 70 6 2°F (21 6 1°C). Measure
bility of regulatory limitations prior to use.
out the amount of water required to fill a test utensil to a depth
of 1 in. (25 mm); this amount of water shall be used for
2. Apparatus
quenching.
2.1 Hot Plate, capable of maintaining over its entire surface
NOTE 3—The test utensils must be at room temperature at the start of
a uniform temperature, that is, less than 20°F (−6.7°C) varia-
the test.
tion over the entire surface. Surface temperature of the hot
plate shall be capable of being adjusted from 475 to
6. Procedure
825 6 10°F (245 to 440 6 5.5°C). The surface temperature of
6.1 Center a dry utensil directly on the preheated hot plate.
the hot plate, determined by any suitable surface temperature
After 3 min remove the utensil from the hot plate and
measuring device, may be varied by changing the wattage
immediately fill the utensil to a depth of 1 in. (25 mm) with
input to the hot plate. If the hot plate surface temperature be
quenching water. After 10 s pour out the quenching water and
calibrated to wattage input, the desired temperature may then
wipe the inside of the utensil with a wrung-out damp sponge.
be set by adjusting wattage input. The wattage input or similar
After a total nonheating period of 20 s replace the utensil on the
calibration shall be made for each surface temperature (see 6.2
hot plate.
and 6.3).
6.2 Immediately after centering the utensil on the hot plate,
2.2 Timing Device, a clock or similar instrument having a
adjust the input to the hot plate so that the hot plate surface
sweep second hand and an integrating minute hand.
temperature will reach 500 6 10°F (260 6 5.5°C). Allow the
2.3 Container, suitable for holding approximately 4 gal of
utensil to heat dry for 8 min with the hot plate adjusted so that
water.
this new surface temperature will be reached.
2.4 Container, for pouring water into utensil.
2.5 Sponge, for wiping utensil dry.
NOTE 4—Do not remove the utensil for surface temperature measure-
ments during the test. The surface temperature of the hot plate should be
3. Quenching Water
calibrated against wattage input before the test is started. The surface
temperature of the hot plate is the maximum temperature to be reached
3.1 Either tap or distilled water shall be used.
during the 8-min heating period (see 2.1).
NOTE 1—In areas where tap water is extremely hard, distilled water is
6.3 After the 8-min heating period, remove the utensil and
recommended.
que
...

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