ASTM A20/A20M-06
(Specification)Standard Specification for General Requirements for Steel Plates for Pressure Vessels
Standard Specification for General Requirements for Steel Plates for Pressure Vessels
SCOPE
1.1 This general requirements specification covers a group of common requirements that, unless otherwise specified in the applicable product specification, apply to rolled steel plates for pressure vessels covered by each of the following product specifications issued by ASTM:
1.1.1 This general requirements specification also covers a group of supplementary requirements that are applicable to several of the above product specifications as indicated therein. Such requirements are provided for use if additional testing or additional restrictions are required by the purchaser, and apply only if specified individually in the purchase order.
1.2 Appendix X1 provides information on coil as a source of plates for pressure vessels.
1.3 Appendix X2 provides information on the variability of tensile properties in plates for pressure vessels.
1.4 Appendix X3 provides information on the variability of Charpy-V-Notch impact test properties in plates for pressure vessels.
1.5 Appendix X4 provides information on cold bending of plates, including suggested minimum inside radii for cold bending.
1.6 These materials are intended to be suitable for fusion welding. When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized.
1.7 In case of any conflict in requirements, the requirements of the applicable product specification prevail over those of this general requirements specification.
1.8 Additional requirements that are specified in the purchase order and accepted by the supplier are permitted, provided that such requirements do not negate any of the requirements of this general requirements specification or the applicable product specification.
1.9 For purposes of determining conformance with this general requirements specification and the applicable product specification, values are to be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice E 29.
1.10 The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system is to be used independently of the other.
1.11 This general requirements specification and the applicable product specification are expressed in both inch-pound units and SI units; unless the order specifies the applicable "M" specification designation (SI units), the plates are to be furnished to inch-pound units.
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Designation: A 20/A20M – 06
Standard Specification for
1
General Requirements for Steel Plates for Pressure Vessels
This standard is issued under the fixed designation A 20/A20M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
Pressure Vessel Plates, Five Percent Nickel Alloy Steel, Spe- A 645/A 645M
cially Heat Treated
2
1.1 This general requirements specification covers a group
Pressure Vessel Plates, Carbon-Manganese, for Moderate and A 662/A 662M
of common requirements that, unless otherwise specified in the
Lower Temperature Service
Pressure Vessel Plates, Carbon Steel, Quenched and Tem- A 724/A 724M
applicable product specification, apply to rolled steel plates for
pered, for Welded Layered Pressure Vessels
pressure vessels covered by each of the following product
Pressure Vessel Plates, Alloy Steel and High-Strength Low- A 734/A 734M
specifications issued by ASTM:
Alloy Steel, Quenched and Tempered
Pressure Vessel Plates, Low-Carbon Manganese- A 735/A 735M
ASTM
Molybdenum-Columbium Alloy Steel, for Moderate and Lower
3
Title of Specification Designation
Temperature Service
Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel- A 736/A 736M
Pressure Vessel Plates, Alloy Steel, Chromium-Manganese A 202/A 202M
Copper-Chromium-Molybdenum-Columbium Alloy Steel
Silicon
Pressure Vessel Plates, High-Strength Low-Alloy Steel A 737/A 737M
Pressure Vessel Plates, Alloy Steel, Nickel A 203/A 203M
Pressure Vessel Plates, Heat-Treated, Carbon-Manganese- A 738/A 738M
Pressure Vessel Plates, Alloy Steel, Molybdenum A 204/A 204M
Silicon Steel, for Moderate and Lower Temperature Service
Pressure Vessel Plates, Alloy Steel, Manganese-Vanadium A 225/A 225M
Pressure-Vessel Plates, Quenched and Tempered, A 782/A 782M
Pressure Vessel Plates, Carbon Steel, Low- and Intermediate- A 285/A 285M
Manganese-Chromium-Molybdenum-Silicon-Zirconium
Tensile Strength
Alloy Steel
Pressure Vessel Plates, Carbon Steel, Manganese-Silicon A 299/A 299M
Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum- A 832/A 832M
Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum A 302/A 302M
Vanadium
and Manganese-Molybdenum-Nickel
Pressure Vessel Plates, Produced by the Thermo-Mechanical A 841/A 841M
Pressure Vessel Plates, Alloy Steel, 9 Percent Nickel Double- A 353/A 353M
Control Process (TMCP)
Normalized and Tempered
Pressure Vessel Plates, 9 % Nickel Alloy, Produced by the A 844/A 844M
Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum A 387/A 387M
Direct-Quenching Process
Pressure Vessel Plates, Carbon Steel, High Strength Manga- A 455/A 455M
Pressure Vessel Plates, 9 % Nickel Alloy, Produced by the A 844/A 844M
nese
Direct-Quenching Process
Pressure Vessel Plates, Carbon Steel, for Intermediate- and A 515/A 515M
Pressure Vessel Plates, 9 % Nickel Alloy, Produced by the A 844/A 844M
Higher-Temperature Service
Direct-Quenching Process
Pressure Vessel Plates, Carbon Steel, Moderate- and Lower- A 516/A 516M
Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum- A 1017/
Temperature Service
Tungsten A 1017M
Pressure Vessel Plates, Alloy Steel, High-Strength, Quenched A 517/A 517M
and Tempered
Pressure Vessel Plates, Alloy Steel, Higher Strength A 1041/
Pressure Vessel Plates, Alloy Steel, Quenched and Tempered A 533/A 533M
Chromium-Molybdenum-Tungsten A 1041M
Manganese-Molybdenum and Manganese-Molybdenum-
Nickel
Pressure Vessel Plates, Heat-Treated, Carbon-Manganese- A 537/A 537M
1.1.1 This general requirements specification also covers a
Silicon Steel
group of supplementary requirements that are applicable to
Pressure Vessel Plates, Alloy Steel, Quenched and Tempered A 542/A 542M
Chromium-Molybdenum severaloftheaboveproductspecificationsasindicatedtherein.
Pressure Vessel Plates, Alloy Steel, Quenched and Tempered A 543/A 543M
Such requirements are provided for use if additional testing or
Nickel-Chromium-Molybdenum
additional restrictions are required by the purchaser, and apply
Pressure Vessel Plates, Alloy Steel, Quenched and Tempered A 553/A 553M
8 and 9 Percent Nickel
only if specified individually in the purchase order.
Pressure Vessel Plates, Carbon Steel, Manganese-Titanium A 562/A 562M
1.2 Appendix X1 provides information on coil as a source
for Glass or Diffused Metallic Coatings
of plates for pressure vessels.
Pressure Vessel Plates, Carbon Steel, High Strength, for Mod- A 612/A 612M
erate and Lower Temperature Service
1.3 Appendix X2 provides information on the variability of
tensile properties in plates for pressure vessels.
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