ASTM G4-01

Standard Guide for Conducting Corrosion Tests in Field Applications

SCOPE
1.1 This guide covers procedures for conducting corrosion tests in plant equipment or systems under operating conditions to evaluate the corrosion resistance of engineering materials. It does not cover electrochemical methods for determining corrosion rates.
1.1.1 While intended primarily for immersion tests, general guidelines provided can be applicable for exposure of test specimens in plant atmospheres, provided that placement and orientation of the test specimens is non-restrictive to air circulation.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. See also 10.4.2.

General Information

• Status: Historical
• Publication Date: 09-Oct-2001
• ICS: 77.060 - Corrosion of metals
• Technical Committee: G01 - Corrosion of Metals
• Drafting Committee: G01.14 - Corrosion of Metals in Construction Materials

Relations

• Replaces: ASTM G4-95 - Standard Guide for Conducting Corrosion Coupon Tests in Field Applications
• Effective Date: 10-Oct-2001
• Replaced By: ASTM G4-01(2008) - Standard Guide for Conducting Corrosion Tests in Field Applications
• Effective Date: 01-May-2008
• Referred By: ASTM G111-21a - Standard Guide for Corrosion Tests in High Temperature or High Pressure Environment, or Both
• Effective Date: 10-Oct-2001
• Referred By: ASTM G78-20 - Standard Guide for Crevice Corrosion Testing of Iron-Base and Nickel-Base Stainless Alloys in Seawater and Other Chloride-Containing Aqueous Environments
• Effective Date: 10-Oct-2001
• Referred By: ASTM G199-09(2020)e1 - Standard Guide for Electrochemical Noise Measurement
• Effective Date: 10-Oct-2001
• Referred By: ASTM G217-16(2022) - Standard Guide for Corrosion Monitoring in Laboratories and Plants with Coupled Multielectrode Array Sensor Method
• Effective Date: 10-Oct-2001
• Referred By: ASTM G71-81(2019) - Standard Guide for Conducting and Evaluating Galvanic Corrosion Tests in Electrolytes
• Effective Date: 10-Oct-2001
• Referred By: ASTM G162-18 - Standard Practice for Conducting and Evaluating Laboratory Corrosion Tests in Soils
• Effective Date: 10-Oct-2001
• Referred By: ASTM G96-90(2018) - Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)
• Effective Date: 10-Oct-2001
• Referred By: ASTM D7665-22 - Standard Guide for Evaluation of Biodegradable Heat Transfer Fluids
• Effective Date: 10-Oct-2001
• Referred By: ASTM C1187-20a - Standard Guide for Establishing Surveillance Test Program for Boron-based Neutron Absorbing Material Systems for Use in Nuclear Fuel Storage Racks in Pool Environment
• Effective Date: 10-Oct-2001
• Referred By: ASTM D5372-20 - Standard Guide for Evaluation of Hydrocarbon Heat Transfer Fluids
• Effective Date: 10-Oct-2001
• Referred By: ASTM F3268-18a - Standard Guide for <emph type="bdit">in vitro</emph> Degradation Testing of Absorbable Metals
• Effective Date: 10-Oct-2001

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:G4–01
Standard Guide for
1
Conducting Corrosion Tests in Field Applications
This standard is issued under the fixed designation G 4; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope G37 Practice for Use of Mattsson’s Solution of pH 7.2 to
Evaluate the Stress-Corrosion Cracking Susceptibility of
1.1 This guide covers procedures for conducting corrosion
4
Copper-Zinc Alloys
tests in plant equipment or systems under operating conditions
G41 Practice for Determining Cracking Susceptibility of
to evaluate the corrosion resistance of engineering materials. It
4
Metals Exposed Under Stress to a Hot Salt Environment
does not cover electrochemical methods for determining cor-
G44 Practice for Exposure of Metals and Alloys by Alter-
rosion rates.
nate Immersion in Neutral 3.5 % Sodium Chloride Solu-
1.1.1 While intended primarily for immersion tests, general
4
tion
guidelines provided can be applicable for exposure of test
G46 Guide for Examination and Evaluation of Pitting
specimens in plant atmospheres, provided that placement and
4
Corrosion
orientation of the test specimens is non-restrictive to air
G47 Test Method for Determining Susceptibility to Stress-
circulation.
Corrosion Cracking of 2XXX and 7XXXAluminumAlloy
1.2 The values stated in SI units are to be regarded as the
4
Products
standard. The values given in parentheses are for information
G 58 Practice for Preparation of Stress-Corrosion Test
only.
4
Specimens for Weldments
1.3 This standard does not purport to address all of the
G78 Guide for Crevice Corrosion Testing of Iron-Base and
safety concerns, if any, associated with its use. It is the
Nickel-Base Stainless Alloys in Seawater and Other
responsibility of the user of this standard to establish appro-
4
Chloride-Containing Aqueous Environments
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. See also 10.4.2.
5
3. Significance and Use
2. Referenced Documents 3.1 Observations and data derived from corrosion testing
areusedtodeterminetheaveragerateofcorrosionand/orother
2.1 ASTM Standards:
types of attack (see Terminology G15) that occur during the
A 262 Practices for Detecting Susceptibility to Intergranu-
2 exposure interval. The data may be used as part of an
lar Attack in Austenitic Stainless Steels
3
evaluation of candidate materials of construction for use in
E3 Practice for Preparation of Metallographic Specimens
similar service or for replacement materials in existing facili-
G1 Practice for Preparing, Cleaning, and Evaluating Cor-
4
ties.
rosion Test Specimens
3.2 The data developed from in-plant tests may also be used
G15 Terminology Relating to Corrosion and Corrosion
4
as guide lines to the behavior of existing plant materials for the
Testing
purpose of scheduling maintenance and repairs.
G16 Guide forApplying Statistics toAnalysis of Corrosion
4
3.3 Corrosion rate data derived from a single exposure
Data
generally do not provide information on corrosion rate change
G30 Practice for Making and Using U-Bend Stress Corro-
4
versus time. Corrosion rates may increase, decrease, or remain
sion Test Specimens
constant,dependingonthenatureofthecorrosionproductsand
G36 Practice for Evaluating Stress-Corrosion-Cracking
the effects of incubation time required at the onset of pitting or
Resistance of Metals and Alloys in a Boiling Magnesium
4
crevice corrosion.
Chloride Solution
4. Limitations
4.1 Metal specimens immersed in a specific liquid may not
1
This guide is under the jurisdiction ofASTM Committee G01 on Corrosion of
corrode at the same rate or in the same manner as in equipment
Metals and is the direct responsibility of Subcommittee G01.14 on Corrosion of
in which the metal acts as a heat transfer medium in heating or
Metals in Construction Materials.
Current edition approved Oct. 10, 2001. Published December 2001. Originally
issued as A 224-39. Last previous edition G 4-95.
2
Annual Book of ASTM Standards, Vol 01.03.
3 5
Annual Book of ASTM Standards, Vol 03.01. This guide is consistent with NACE document RP0497, Standard Recom-
4
Annual Book of ASTM Standards, Vol 03.02. mended Practice “Field Corrosion Evaluation Using Metallic Test Specimens”.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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G4–01
cooling the liquid. In certain services, the corrosion of heat- 4.7.6 Stress-corrosion cracking (SCC) may occur under
exchanger tubes may be quite different from that of the shell or con
...