ASTM A537 - A 537M - 20

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Designation: A537/A537M −20
Standard Speciﬁcation for
Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-
Silicon Steel
1
This standard is issued under the ﬁxed designation A537/A537M; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This speciﬁcation
2
covers heat-treated carbon-
manganese-silicon steel plates intended for fusion welded
pressure vessels and structures.
1.2 Plates furnished under this speciﬁcation are available in
the following three classes:
Class Heat
Treatment Thickness
Yield
Strength,
min, ksi
[MPa]
Tensile
Strength,
min, ksi
[MPa]
1 Normalized 2
1
⁄
2
in. and under [65 mm and
under]
50
[345]
70
[485]
Over 2
1
⁄
2
in.
[Over 65 mm]
45
[310]
65
[450]
2 Quenched
and
tempered
2
1
⁄
2
in. and under [65 mm and
under]
60
[415]
80
[550]
Over 2
1
⁄
2
to4in.
[Over 65 to 100 mm]
55
[380]
75
[515]
Over 4 in.
[Over 100 mm]
46
[315]
70
[485]
3 Quenched
and
tempered
2
1
⁄
2
in. and under [65 mm and
under]
55
[380]
80
[550]
Over 2
1
⁄
2
to4in.
[Over 65 to 100 mm]
50
[345]
75
[515]
Over 4 in.
[Over 100 mm]
40
[275]
70
[485]
1.3 The maximum thickness of plates is limited only by the
capacity of the material to meet the speciﬁed mechanical
property requirements.
1.4 The values stated in either inch-pound units or SI units
are to be regarded separately 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 without combining values in
any way.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
3
A20/A20M Speciﬁcation for General Requirements for Steel
Plates for Pressure Vessels
A435/A435M Speciﬁcation for Straight-Beam Ultrasonic
Examination of Steel Plates
A577/A577M Speciﬁcation for Ultrasonic Angle-Beam Ex-
amination of Steel Plates
A578/A578M Speciﬁcation for Straight-Beam Ultrasonic
Examination of Rolled Steel Plates for Special Applica-
tions
3. General Requirements and Ordering Information
3.1 Plates furnished supplied to this material speciﬁcation
shall conform to Speciﬁcation A20/A20M. These requirements
outline the testing and retesting methods and procedures;
permissible variations in dimensions; and mass, quality, and
repair of defects, marking, loading, and ordering information.
3.2 In addition to the basic requirements of this
speciﬁcation, certain supplementary requirements are available
when additional control, testing, or examination is required to
meet end use requirements. The purchaser is referred to the
listed supplementary requirements in this speciﬁcation and to
the detailed requirements in Speciﬁcation A20/A20M.
1
This speciﬁcation is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved May 1, 2020. Published May 2020. Originally
approved in 1965. Last previous edition approved in 2019 as A537/A537M – 13
(2019). DOI: 10.1520/A0537_A0537M-20.
2
For ASME Boiler and Pressure Vessel Code applications, see related Speciﬁ-
cation SA-537/SA-537M in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

3.3 If the requirements of this speciﬁcation are in conﬂict

with the requirements of Speciﬁcation A20/A20M, the require-

ments of this speciﬁcation shall prevail.

4. Manufacture

4.1 Steelmaking Practice—The steel shall be killed and

conform to the ﬁne austenitic grain size requirement of

Speciﬁcation A20/A20M.

5. Heat Treatment

5.1 All plates shall be thermally treated as follows:

5.1.1 Class 1 plates shall be normalized.

5.1.2 Class 2 and Class 3 plates shall be quenched and

tempered. The tempering temperature for Class 2 plates shall

not be less than 1100°F [595°C] and not less than 1150°F

[620°C] for Class 3 plates.

6. Chemical Requirements

6.1 The steel shall conform to the chemical requirements

shown in Table 1 unless otherwise modiﬁed in accordance with

Supplementary Requirement S17, Vacuum Carbon-Deoxidized

Steel, in Speciﬁcation A20/A20M.

7. Mechanical Requirements

7.1 Tension Tests:

7.1.1 Requirements—The material as represented by the

tension-test specimens shall conform to the requirements

shown in Table 2.

7.1.2 For Class 2 and Class 3 plates with a nominal

thickness of

⁄

in. [20 mm] and under, the 1

⁄

-in. [40-mm]

wide rectangular specimen may be used for the tension test,

and the elongation may be determined in a 2-in. [50-mm] gage

length that includes the fracture and that shows the greatest

elongation.

8. Keywords

8.1 carbon steel plate; pressure containing parts; pressure

vessel steels; steel plates for pressure vessel application

TABLE 1 Chemical Requirements

Element Composition, %

Carbon, max

0.24

Manganese:

⁄

in. [40 mm] and under in thickness:

Heat analysis 0.70–1.35

Product analysis 0.64–1.46

Over 1

⁄

in. [40 mm] in thickness:

Heat analysis 1.00–1.60

Product analysis 0.92–1.72

Phosphorus, max

0.025

Sulfur, max

0.025

Silicon:

Heat analysis 0.15–0.50

Product analysis 0.13–0.55

Copper, max:

Heat analysis 0.35

Product analysis 0.38

Nickel, max:

Heat analysis 0.25

Product analysis 0.28

Chromium, max:

Heat analysis 0.25

Product analysis 0.29

Molybdenum, max:

Heat analysis 0.08

Product analysis 0.09

Applies to both heat and product analyses.

Manganese may exceed 1.35 % on heat analysis, up to a maximum of 1.60 %,

and nickel may exceed 0.25 % on heat analysis, up to a maximum of 0.50 %,

provided the heat analysis carbon equivalent does not exceed 0.57 % when based

upon the following equation:

CE 5C1Mn

61Cr1Mo1V

51Ni1Cu

When this option is exercised, the manganese and nickel contents on product

analysis shall not exceed the heat analysis content by more than 0.12 % and

0.03 %, respectively.

TABLE 2 Tensile Requirements

Class 1 Class 2 Class 3

ksi [MPa] ksi [MPa] ksi [MPa]

Tensile strength:

⁄

in. and under

[65 mm and under]

70–90

[485–620]

80–100

[550–690]

80–100

[550–690]

Over 2

⁄

to 4 in., incl

[Over 65 to 100 mm, incl]

65–85

[450–585]

75–95

[515–655]

75–95

[515–655]

Over 4 in.

[Over 100 mm]

65–85

[450–585]

70–90

[485–620]

70–90

[485–620]

Yield strength, min:

⁄

in. and under

[65 mm and under]

[345]

[415]

[380]

Over 2

⁄

to 4 in., incl

[Over 65 to 100 mm, incl]

[310]

[380]

[345]

Over 4 in.

[Over 100 mm]

[310]

[315]

[275]

Elongation in 2 in.

[50 mm], min, %:

4 in. [100 mm] and under

Over 4 in. [100 mm]

Elongation in 8 in.

[200 mm], min, %

See Speciﬁcation A20/A20M for elongation adjustments.

There is no requirement for elongation in 8 in.

A537/A537M − 20

SUPPLEMENTARY REQUIREMENTS

Supplementary requirements shall not apply unless speciﬁed in the order.

A list of standardized supplementary requirements for use at the option of the purchaser are included

in Speciﬁcation A20/A20M. Several of those considered suitable for use with this speciﬁcation are

listed by title. Other tests may be performed by agreement between the supplier and the purchaser.

S1. Vacuum Treatment,

S2. Product Analysis,

S3. Simulated Post-Weld Heat Treatment of Mechanical

Test Coupons,

S4.1 Additional Tension Test,

S5. Charpy V-Notch Impact Test,

S6. Drop Weight Test (for Material 0.625 in. [16 mm] and

over in Thickness),

S7. High-Temperature Tension Test,

S8. Ultrasonic Examination in accordance with Speciﬁca-

tion A435/A435M,

S9. Magnetic Particle Examination,

S11. Ultrasonic Examination in accordance with Speciﬁca-

tion A577/A577M,

S12. Ultrasonic Examination in accordance with Speciﬁca-

tion A578/A578M, and

S17. Vacuum Carbon-Deoxidized Steel.

SUMMARY OF CHANGES

Committee A01 has identiﬁed the location of selected changes to this standard since the last issue

(A537/A537M – 13 (2019)) that may impact the use of this standard. (Approved May 1, 2020.)

(1) Revised 1.2 and 1.3 to reﬂect change in maximum thick-

ness.

(2) Revised Table 2 to reﬂect removal of maximum thickness.

Deleted Table Footnote A and relabeled the subsequent table

footnotes accordingly.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned

in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk

of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ﬁve years and

if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards

and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the

responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should

make your views known to the ASTM Committee on Standards, at the address shown below.

This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,

United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above

address or at 610-832-9585 (phone), 610-832-9555 (fax), or service@astm.org (e-mail); or through the ASTM website

(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222

Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http://www.copyright.com/

A537/A537M − 20

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ASTM A537 - A 537M - 20 是美国材料与试验协会（ASTM）发布的最新版本标准规范，主要涵盖经热处理的碳锰硅钢压力容器用钢板，包括标准规格的普通强度与较高强度等级。该标准适用于制造锅炉、压力容器及储存设备中承受中低温或高温工况的钢板材料，特别强调钢板的化学成分、力学性能、热处理工艺（如正火或回火）以及冲击韧性要求。ASTM A537 Class 1 和 Class 2 两个级别分别对应不同的屈服强度和抗拉强度范围，广泛应用于石油化工、能源及重型机械行业。本规范还包含板厚范围、

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