ASTM D6137 - 97(2012)

    Standard Test Method for Sulfuric Acid Resistance of Polymer Linings for Flue Gas Desulfurization Systems

    Active Standard ASTM D6137 | Developed by Subcommittee: D33.09

    Book of Standards Volume: 06.02


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    Significance and Use

    3.1 The results obtained by this test method can be used in combination with other test methods for the selection of a lining for surfaces in flue gas desulfurization (FGD) systems that will be exposed to hot unscrubbed flue gas or to scrubbed gas that has been reheated well above the water dew point.

    3.1.1 This test method does not evaluate or correlate to areas within the scrubber or scrubbed gas streams at temperatures at or below the water dew point.

    3.2 This test method is intended to evaluate the combined effects of heat and exposure to sulfuric acid upon a lining system as applied to a carbon steel substrate. It does not produce the thermal gradient through the lining that may exist in actual applications. Actual lining performance may also be affected by concurrent physical or mechanical effects and other chemicals that may be present in the flue gas.

    3.3 This test method evaluates major failure modes of linings applied to square test panels that are cycled from room temperature to a designated elevated temperature.

    3.4 The recommended test temperatures of 200°F (93°C) and 350°F (177°C) are based on typical maximum operating zone temperatures in flue gas desulfurizations systems. Other temperatures may be evaluated as desired. Cycling to lower temperatures, including freezing, may be considered if applicable.

    3.5 The standard acid concentration for all tests is 20 %, recognizing that the concentration will quickly rise to the equilibrium at the selected test temperature.

    1. Scope

    1.1 This test method is intended to evaluate the sulfuric acid resistance at elevated temperatures of polymer linings applied to carbon steel substrates subject to sulfuric acid attack.

    1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A36/A36M Specification for Carbon Structural Steel

    C868 Test Method for Chemical Resistance of Protective Linings

    D660 Test Method for Evaluating Degree of Checking of Exterior Paints

    D661 Test Method for Evaluating Degree of Cracking of Exterior Paints

    D714 Test Method for Evaluating Degree of Blistering of Paints

    D772 Test Method for Evaluating Degree of Flaking (Scaling) of Exterior Paints

    D1186 Test Methods for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base

    D1474 Test Methods for Indentation Hardness of Organic Coatings

    D4138 Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means

    D4417 Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel

    D5162 Practice for Discontinuity (Holiday) Testing of Nonconductive Protective Coating on Metallic Substrates

    Steel Structures Painting Council Standards

    SSPCNo.SP5 Blast Cleaning to White Metal


    ICS Code

    ICS Number Code 13.040.99 (Other standards related to air quality)

    UNSPSC Code

    UNSPSC Code 40161607(Flue gas desulphurization system)


    Referencing This Standard

    DOI: 10.1520/D6137-97R12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D6137-97(2012), Standard Test Method for Sulfuric Acid Resistance of Polymer Linings for Flue Gas Desulfurization Systems, ASTM International, West Conshohocken, PA, 2012, www.astm.org

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