ASTM G4-01(2014)
Standard Guide for Conducting Corrosion Tests in Field Applications

Standard No.

ASTM G4-01(2014)

Release Date

2001

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM G4-01(2014)

Scope

Note 1: This guide is consistent with NACE Standard RP0497.

3.1 Observations and data derived from corrosion testing are used to determine the average rate of corrosion or other types of attack, or both (see Terminology G15), that occur during the exposure interval. The data may be used as part of an evaluation of candidate materials of construction for use in similar service or for replacement materials in existing facilities.

3.2 The data developed from in-plant tests may also be used as guide lines to the behavior of existing plant materials for the purpose of scheduling maintenance and repairs.

3.3 Corrosion rate data derived from a single exposure generally do not provide information on corrosion rate change versus time. Corrosion rates may increase, decrease, or remain constant, depending on the nature of the corrosion products and the effects of incubation time required at the onset of pitting or crevice corrosion.

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.

ASTM G4-01(2014) Referenced Document

• ASTM A262 Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
• ASTM E3 Standard Practice for Preparation of Metallographic Specimens
• ASTM G1 Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
• ASTM G15 Standard Terminology Relating to Corrosion and Corrosion Testing
• ASTM G16 Standard Guide for Applying Statistics to Analysis of Corrosion Data
• ASTM G30 Standard Practice for Making and Using U-Bend Stress-Corrosion Test Specimens
• ASTM G36 Standard Practice for Evaluating Stress-Corrosion-Cracking Resistance of Metals and Alloys in a Boiling Magnesium Chloride Solution
• ASTM G37 Standard Practice for Use of Mattsson's Solution of pH 7.2 to Evaluate the Stress-Corrosion Cracking Susceptibility of Copper-Zinc Alloys
• ASTM G41 Standard Practice for Determining Cracking Susceptibility of Metals Exposed Under Stress to a Hot Salt Environment
• ASTM G44 Standard Practice for Exposure of Metals and Alloys by Alternate Immersion in Neutral 3.5?% Sodium Chloride Solution
• ASTM G46 Standard Guide for Examination and Evaluation of Pitting Corrosion
• ASTM G47 Standard Test Method for Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products
• ASTM G58 Standard Practice for Preparation of Stress-Corrosion Test Specimens for Weldments
• ASTM G78 Standard Guide for Crevice Corrosion Testing of Iron-Base and Nickel-Base Stainless Alloys in Seawater and Other Chloride-Containing Aqueous Environments

ASTM G4-01(2014) history

• 2001 ASTM G4-01(2014) Standard Guide for Conducting Corrosion Tests in Field Applications
• 2001 ASTM G4-01(2008) Standard Guide for Conducting Corrosion Tests in Field Applications
• 2001 ASTM G4-01 Standard Guide for Conducting Corrosion Tests in Field Applications
• 1995 ASTM G4-95 Standard Guide for Conducting Corrosion Coupon Tests in Field Applications