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ASTM C283-97

(Test Method)

Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling Acid

Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling Acid

SCOPE
1.1 These test methods cover the determination of the resistance of porcelain enamel coatings used on utensils to attack by boiling acid.
1.2 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
09-Oct-1997
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 C283-97(2002) - Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling Acid
Effective Date
10-Oct-1997
Referred By
ASTM C286-22 - Standard Terminology Relating to Porcelain Enamel and Ceramic-Metal Systems
Effective Date
10-Oct-1997

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ASTM C283-97 - Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling AcidASTM C283-97 - Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling Acid
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ASTM C283-97 - Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling Acid
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 283 – 97
Standard Test Methods for
Resistance of Porcelain Enameled Utensils to Boiling
Acid
This standard is issued under the fixed designation C 283; 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.
1. Scope 3.5.1 Punch and Die (Fig. 2),
3.5.2 Shears,
1.1 These test methods cover the determination of the
3.5.3 Abrasive Cut-off Wheel,
resistance of porcelain enamel coatings used on utensils to
3.5.4 Cutting Torch,or
attack by boiling acid.
3.5.5 Any Other Suitable Equipment
1.2 This standard does not purport to address all of the
3.6 Analytical Balance, having a sensitivity of 0.0001 g.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Reagent
priate safety and health practices and determine the applica-
4.1 The test solution shall contain6gofACS grade citric
bility of regulatory limitations prior to use.
acid per 94 g of distilled water and shall be prepared fresh for
2. Significance and Use each test.
2.1 Test Method A provides the producers of porcelain
5. Test Specimens
enameled utensils with a quality control method of testing for
5.1 The test specimens shall consist of three plates, 3 ⁄4 in.
resistance to boiling acid for parts randomly selected from the
(82 mm) in diameter, cut from the bottoms of three identical
production line.
utensils.
2.2 Test Method B provides the supplier of porcelain
enamel raw materials with a laboratory method for testing the
NOTE 1—“Identical utensils” signifies utensils of the same size, shape,
resistance of different coatings (intended for use on utensils) to and finish.
boiling acid.
6. Preparation of Test Specimens
TEST METHOD A
6.1 After the test specimens have been cut from the utensils,
file their edges with a triangular file to remove any loose
3. Apparatus
enamel chips.
3.1 Hot Plate, capable of maintaining over its entire surface
6.2 Thoroughly wash the test specimens with soap and
a uniform temperature that will keep the test solution at a
water to remove any grease picked up in handling. Rinse with
rolling boil (see section 7.5). The heating element should
distilled water. Place the specimens in a drier at 220°F (104°C).
occupy an area at least 8 in. (203 mm) in diameter.
After 10 min, remove the test specimens and place them in a
3.2 Chemical Glassware—Beakers, a desiccator, and a
desiccator containing calcium chloride.
500-mL graduated cylinder.
7. Procedure
3.3 Drier, capable of maintaining a temperature of at least
220°F (104°C).
7.1 Level the hot plate, turn the switch on in the high heat
3.4 Boiling Acid Resistance Apparatus, as shown in Fig. 1.
position, and allow to preheat for at least1hto obtain a
Three sets will be required.
uniform temperature over the entire heating element.
3.5 Cutting Equipment, suitable for cutting a 3 ⁄4 -in. (82-
7.2 Remove the test specimens, one at a time, from the
mm) diameter plate from the bottom of a porcelain-enameled
desiccator, hold at the edges, and inspect the edges for loose
steel utensil, as follows:
chips. Remove any chips found, before the initial weighing.
7.3 Weigh each specimen on an analytical balance, record-
ing its weight to the nearest 0.0001 g.
These test methods are under the jurisdiction of ASTM Committee B-8 on
Metallic and Inorganic Coatings and are the direct responsibility of Subcommittee
7.4 Place the heat-resistant gasket above the hole in the
B08.12 on Materials for Porcelain Enamel and Ceramic-Metal Systems.
base-plate of the boiling-acid resistance apparatus (Fig. 1).
Current edition approved Oct. 10, 1997. Published March 1998. Originally
Place the test specimen over the gasket, with the surface from
published as C283 – 51. Last previous edition C283 – 54 (1993).
the inside of the utensil up. Next, place a rubber jar ring on the
Test Method A is based on the boiling acid resistance test developed by the
Enameled Utensil Manufacturers’ Council; see Section 16 of Commercial Standard
test specimen. This serves as a seal between the test specimen
CS100-47, Porcelain Enameled Steel Utensils, United States Department of Com-
and the heat-resistant glass tube, which shall be placed over it.
merce.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
C 283
in. mm in. mm in. mm in. mm
1 1 1
⁄16 1.6 1 ⁄4 32 2.5 64 4 ⁄16 103
1 25 1 1
⁄8 3.2 1 ⁄32 45 3 ⁄4 82 4 ⁄8 105
1 1 3 1
⁄4 6.4 2 ⁄4 57 3 ⁄8 86 5 ⁄2 140
⁄8 9.5 2.31 59 4 102 14 356
(a) Assembly (b) Details
FIG. 1 Boiling-Acid Resistance Apparatus
Place another rubber jar ring on top of the glass tube, set the 220°F (104°C) for 10 min. Place the specimens in a desiccator
cover-plate on it, and clamp in place by tightening the wing and cool to room temperature.
nuts. Tighten the wing nuts until a seal is obtained between the 7.7 After the test specimens are cool, again weigh them
glass tube and the test specimen. This can be determined by separately on the analytical balance.
inspecting the seal ring, when the nuts are tight enough, the
8. Calculations and Report
outside edge
...

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SCOPE
1.1 This specification covers asbestos-free asphalt roof coatings of brushing or spraying consistency.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 The following precautionary caveat pertains only to the test method portion, Section 8, of this specification:  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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
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