Standard Test Method for Chemical Resistance of Protective Linings

SIGNIFICANCE AND USE
The results obtained by this test method should serve as a guide in, but not as the sole basis for, selection of a lining material for particular application. Simple chemical-resistance evaluations of the lining materials may be performed more conveniently by other pertinent methods as a prescreening test for this procedure in accordance with Test Methods C 267 and D 471.
SCOPE
1.1 This test method covers a procedure for evaluating the chemical resistance of a polymer-based protective lining in immersion service. The method closely approximates the service conditions, including the temperature differential between the external and internal surfaces of the equipment, which may accelerate permeation of the lining by a corrosive media.
1.2 This test may be used to simulate actual field use conditions insofar as a qualitative evaluation of the lining system after a predetermined period of exposure.
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.

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Publication Date
09-Oct-2002
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ASTM C868-02 - Standard Test Method for Chemical Resistance of Protective Linings
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Designation:C868–02
Standard Test Method for
1
Chemical Resistance of Protective Linings
This standard is issued under the fixed designation C 868; 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 Profile of Blast Cleaned Steel
D 4541 Test Method for Pull-Off Strength of Coatings
1.1 This test method covers a procedure for evaluating the
Using Portable Adhesion Testers
chemical resistance of a polymer-based protective lining in
D 5162 Practice for Discontinuity (Holiday) Testing of
immersion service. The method closely approximates the
Nonconductive Protective Coating on Metallic Substrates
service conditions, including the temperature differential be-
2.2 NACE Standard:
tween the external and internal surfaces of the equipment,
3
NACE No. 1/SSPC-SP-5 White Metal Blast Cleaning
which may accelerate permeation of the lining by a corrosive
media.
3. Significance and Use
1.2 This test may be used to simulate actual field use
3.1 The results obtained by this test method should serve as
conditions insofar as a qualitative evaluation of the lining
a guide in, but not as the sole basis for, selection of a lining
system after a predetermined period of exposure.
material for particular application. Simple chemical-resistance
1.3 This standard does not purport to address all of the
evaluations of the lining materials may be performed more
safety concerns, if any, associated with its use. It is the
conveniently by other pertinent methods as a prescreening test
responsibility of the user of this standard to establish appro-
for this procedure in accordance with Test Methods C 267 and
priate safety and health practices and determine the applica-
D 471.
bility of regulatory limitations prior to use.
4. Apparatus
2. Referenced Documents
2
4.1 Four-Neck Cylindrical, Borosilicate-Type Glass Test
2.1 ASTM Standards:
4
Cell , similar to the unit shown in Fig. 1.
A 36/A 36M Specification for Carbon Structural Steel
4.1.1 Whereanadditionalinletisneededforathermocouple
A 285/A 285M Specification for Pressure Vessel Plates,
or thermistor to control temperature, a five-neck cell should be
Carbon Steel, Low- and Intermediate-Tensile Strength
used.
C 267 Test Methods for Chemical Resistance of Mortars,
Grouts, and Monolithic Surfacings and Polymer Concretes
NOTE 1—If test solutions that are known to attack glass such as HF or
D 471 Test Method for Rubber Property—Effect of Liquids caustic, a fluorocarbon or other suitable cell should be used.
D 714 Test Method for Evaluating Degree of Blistering of
4.2 Heating Equipment:
Paints
4.2.1 The corrosive media may be heated by an electrical-
D 785 Test Method for Rockwell Hardness of Plastics and
resistant coil fitting inside the test cell. This is protected by a
Electrical Insulating Materials
glass immersion tube. The heater shall be controlled through
D 1474 Test Methods for Indentation Hardness of Organic
the use of a rheostat or thermostat to produce the desired
Coatings
temperature 6 4F° (2C°).
D 2583 Test Method for Indentation Hardness of Rigid
4.2.2 An electrical heating tape may be wrapped around the
Plastics by Means of a Barcol Impressor
exterior of the test cell but not around the test panels and may
D 3363 Test Method for Film Hardness by Pencil Test
not touch the test panels.
D 4417 Test Methods for Field Measurement of Surface
4.3 Reflux Water Condenser, to maintain a constant level
and concentration of the test solution.
1
This test method is under the jurisdiction of ASTM Committee C03 on
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Chemical-Resistant Nonmetallic Materials and is the direct responsibility of Available from the Society for Protective Coatings, 40 24th St., Pittsburgh, PA
Subcommittee C03.03 on Thermoplastic Fabrications. 15222. Web address: http://www.SSPC.org
4
Current edition approved Oct. 10, 2002. Published December 2002. Originally The sole source of supply of the four-neck cylindrical, borosilicate-type glass
e1
published as C 868 – 77. Last previous edition C 868 – 85(1995) . test cell known to the committee at this time is DelVal Glass Inc., 1135 E. 7th St.,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Wilmington, DE. If you are aware of alternative suppliers, please provide this
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the ASTM website. you may attend.
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