ASTM A20
Standard Specification for General Requirements for Steel Plates for Pressure Vessels
Published by ASTM International (ASTM)
The CFR incorporates ASTM A20 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.
The 3 editions the CFR requires
Different parts name different editions; each applies where its part says so. Newest first.
ASTM A20/A20M-19, approved May 1, 2019
As the CFR lists it: “ASTM A20/A20M-19, Standard Specification for General Requirements for Steel Plates for Pressure Vessels, approved May 1, 2019 (“ASTM A20/A20M”)”
ASTM A20/A20M-97a
As the CFR lists it: “ASTM A 20/A 20M-97a, Standard Specification for General Requirements for Steel Plates for Pressure Vessels”
- Listed in 46 CFR 154.1; required by46 CFR 154.610 ↗
ASTM A20/A20M-93a, 1993
As the CFR lists it: “ASTM A 20/A 20M-93a Standard Specification for General Requirements for Steel Plates for Pressure Vessels, 1993”
- Listed in 49 CFR 171.7(v)(1); required by49 CFR 178.337-2 ↗
How to read it
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ASTM A20 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.