Common grades covered under this specification included:
: For handling acidic fluids and high-pressure environments.
1.1 This specification covers high-strength, low-alloy structural steel plates produced by quenching and tempering.
: The primary guide for laboratory immersion corrosion testing for all metals, including stainless steel.
The standard applies directly to both profiles and cold-finished bars. These are typically supplied with standard mill test certificates (MTCs) to verify chemical and physical alignment. 2. Core Material Grades and Chemical Compositions Astm A279 Pdf
: The general industry standard for laboratory immersion corrosion testing.
: Must be solution annealed by heating to a high temperature range followed by rapid water quenching or air cooling.
: Require normalizing and tempering or liquid quenching to unlock specified hardness levels. Surface Finish Varieties
Withdrawn. Users looking for total immersion protocols are now generally directed to Modern Replacements & Related Standards Common grades covered under this specification included: :
2.2 :
The ASTM A279 total immersion test is crucial because it evaluates uniform corrosion under controlled laboratory acceleration. The data gathered allows engineers to calculate the or millimeters per year (mm/y) of material loss, which directly influences the calculated lifespan of industrial equipment like tanks, piping, and valves. Core Laboratory Procedure
: To determine the suitability of specific stainless steel grades for service in corrosive chemical environments. Methodology
The test methods outlined in standards like ASTM A279 and G31 are essential for validating material performance in: Chemical processing equipment. Marine and offshore environments. Power generation plants (boilers and heat exchangers). The standard applies directly to both profiles and
: Seamless tubes, welded tubes, hexagonal rods, and round bars. Chemical & Mechanical Properties
Thorough cleaning and degreasing were mandatory to remove oils and contaminants that could interfere with the corrosion process. Weighing: Specimens were weighed to the nearest 2. The Test Solution
Below is a summary of vendors that list the standard for sale:
The United States Nuclear Regulatory Commission has specifically investigated this matter and determined that references to ASTM A279/A279M as a material standard are incorrect. This finding was documented during the review of critical safety-related applications, lending significant weight to the conclusion that ASTM A279 is not a valid material specification for stainless steel bars.