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Table of Contents
                            Scope
Referenced Documents
General Requirements for Delivery
Materials and Manufacture
Chemical Composition
Mechanical Properties
Test Reports
TABLE 1
TABLE 2
Keywords
TABLE 3
TABLE 4
                        
Document Text Contents
Page 1

Designation: A 572/A 572M – 07
American Association State
Highway and Transportation

Officals Standard
AASHTO No.: M223

Standard Specification for
High-Strength Low-Alloy Columbium-Vanadium Structural
Steel1

This standard is issued under the fixed designation A 572/A 572M; 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*

1.1 This specification covers five grades of high-strength
low-alloy structural steel shapes, plates, sheet piling, and bars.
Grades 42 [290], 50 [345], and 55 [380] are intended for
riveted, bolted, or welded structures. Grades 60 [415] and 65
[450] are intended for riveted or bolted construction of bridges,
or for riveted, bolted, or welded construction in other applica-
tions.

1.2 For applications, such as welded bridge construction,
where notch toughness is important, notch toughness require-
ments are to be negotiated between the purchaser and the
producer.

1.3 Specification A 588/A 588M shall not be substituted for
Specification A 572/A 572M without agreement between the
purchaser and the supplier.

1.4 The use of columbium, vanadium, titanium, nitrogen, or
combinations thereof, within the limitations noted in Section 5,
is required; the selection of type (1, 2, 3, or 5) is at the option
of the producer, unless otherwise specified by the purchaser.
(See Supplementary Requirement S90.)

1.5 The maximum thicknesses available in the grades and
products covered by this specification are shown in Table 1.

1.6 When the steel is to be welded, a welding procedure
suitable for the grade of steel and intended use or service is to
be utilized. See Appendix X3 of Specification A 6/A 6M for
information on weldability.

1.7 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.

1.8 The text of this specification contains notes or footnotes,
or both, that provide explanatory material. Such notes and
footnotes, excluding those in tables and figures, do not contain
any mandatory requirements.

1.9 For structural products produced from coil and fur-
nished without heat treatment or with stress relieving only, the
additional requirements, including additional testing require-
ments and the reporting of additional tests, of A 6/A 6M apply.

2. Referenced Documents

2.1 ASTM Standards: 2

A 6/A 6M Specification for General Requirements for
Rolled Structural Steel Bars, Plates, Shapes, and Sheet
Piling

A 36/A 36M Specification for Carbon Structural Steel
A 514/A 514M Specification for High-Yield-Strength,

Quenched and Tempered Alloy Steel Plate, Suitable for
Welding

A 588/A 588M Specification for High-Strength Low-Alloy
Structural Steel, up to 50 ksi [345 MPa] Minimum Yield
Point, with Atmospheric Corrosion Resistance

3. General Requirements for Delivery

3.1 Structural products furnished under this specification
shall conform to the requirements of the current edition of
Specification A 6/A 6M, for the specific structural product
ordered, unless a conflict exists in which case this specification
shall prevail.

3.2 Coils are excluded from qualification to this specifica-
tion until they are processed into a finished structural product.
Structural products produced from coil means structural prod-
ucts that have been cut to individual lengths from a coil. The
processor directly controls, or is responsible for, the operations
involved in the processing of a coil into a finished structural
product. Such operations include decoiling, leveling or
straightening, hot-forming or cold-forming (if applicable),
cutting to length, testing, inspection, conditioning, heat treat-
ment (if applicable), packaging, marking, loading for shipment,
and certification.

NOTE 1—For structural products produced from coil and furnished
without heat treatment or with stress relieving only, two test results are to

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
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.

Current edition approved March 1, 2007. Published March 2007. Originally
approved in 1966. Last previous edition approved in 2006 as A 572/A 572M – 06.

2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [email protected] For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.

1

*A Summary of Changes section appears at the end of this standard.

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be reported for each qualifying coil. Additional requirements regarding
structural products produced from coil are described in A 6/A 6M.

4. Materials and Manufacture

4.1 The steel shall be semi-killed or killed

5. Chemical Composition

5.1 The heat analysis shall conform to the requirements
prescribed in Table 2 and Table 3.

5.2 The steel shall conform on product analysis to the
requirements prescribed in Table 2 and Table 3, subject to the
product analysis tolerances in Specification A 6/A 6M.

6. Mechanical Properties

6.1 Tensile Properties:
6.1.1 The material as represented by the test specimens shall

conform to the tensile properties given in Table 4.

7. Test Reports

7.1 In addition to the Test Reports requirements in Specifi-
cation A 6/A 6M, when Specification A 588/A 588M is substi-
tuted for Specification A 572/A 572M, the test report shall
include the statement “Specification A 588/A 588M substi-
tuted” and the heat analysis of all elements required in
Specification A 588/A 588M.

TABLE 1 Maximum Product Thickness or Size

Grade

Yield Point, min Maximum Thickness or Size

Zees and Rolled
Teesksi [MPa]

Plates and Bars
Structural Shape

Flange or Leg
Thickness Sheet Piling

in. [mm] in. [mm]

42 [290]A 42 [290] 6 [150] all all all all
50 [345]A 50 [345] 4B [100]B all all all all
55 [380] 55 [380] 2 [50] all all all all
60 [415]A 60 [415] 11⁄4C [32]C 2 [50] all all
65 [450] 65 [450] 11⁄4 [32] 2 [50] not available all

A In the above tabulation, Grades 42, 50, and 60 [290, 345, and 415], are the yield point levels most closely approximating a geometric progression pattern between
36 ksi [250 MPa], min, yield point steels covered by Specification A 36/A 36M and 100 ksi [690 MPa], min, yield strength steels covered by Specification A 514/A 514M.

B Round bars up to and including 11 in. [275 mm] in diameter are permitted.
C Round bars up to and including 31⁄2 in. [90 mm] in diameter are permitted.

TABLE 2 Chemical RequirementsA

(Heat Analysis)

Diameter, Thickness,
or Distance

Between Parallel
Faces, in. [mm]
Plates and Bars

Structural
Shape

Flange or
Leg

Thickness,
in. [mm]

Grade
Carbon,
max, %

Manganese,B

max, %
Phosphorus,

max, %

Sulfur,
max,

%

Silicon

Plates to 11⁄2 in. [40
mm] Thick,

Shapes with
Flange or Leg

Thickness to 3 in.
[75 mm] inclusive,

Sheet Piling,
Bars, Zees, and

Rolled TeesC

Plates Over 11⁄2 in.
[40 mm] Thick and
Shapes with Flange

Thickness
Over 3 in.
[75 mm]

max, % range, %

6 [150] all 42 [290] 0.21 1.35D 0.04 0.05 0.40 0.15–0.40
4 [100]E all 50 [345] 0.23 1.35D 0.04 0.05 0.40 0.15–0.40
2 [50]F all 55 [380] 0.25 1.35D 0.04 0.05 0.40 0.15-0.40
11⁄4 [32]F # 2 [50] 60 [415] 0.26 1.35D 0.04 0.05 0.40 G

>1⁄2 – 11⁄4 [13–32] >1-2 [25-50] 65 [450] 0.23 1.65 0.04 0.05 0.40 G

# 1⁄2 [13]H # 1H 65 [450] 0.26 1.35 0.04 0.05 0.40 G

A Copper when specified shall have a minimum content of 0.20 % by heat analysis (0.18 % by product analysis).
B Manganese, minimum, by heat analysis of 0.80 % (0.75 % by product analysis) shall be required for all plates over 3⁄8 in. [10 mm] in thickness; a minimum of 0.50 %

(0.45 % by product analysis) shall be required for plates 3⁄8 in. [10 mm] and less in thickness, and for all other products. The manganese to carbon ratio shall not be less
than 2 to 1.

C Bars over 11⁄2 in. [40 mm] in diameter, thickness, or distance between parallel faces shall be made by a killed steel practice.
D For each reduction of 0.01 percentage point below the specified carbon maximum, an increase of 0.06 percentage point manganese above the specified maximum

is permitted, up to a maximum of 1.60 %.
E Round bars up to and including 11 in. [275 mm] in diameter are permitted.
F Round bars up to and including 31⁄2 in. [90 mm] in diameter are permitted.
G The size and grade is not described in this specification.
H An alternative chemical requirement with a maximum carbon of 0.21 % and a maximum manganese of 1.65 % is permitted, with the balance of the elements as shown

in Table 2.

A 572/A 572M – 07

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8. Keywords

8.1 bars; bolted construction; bridges; buildings;
columbium-vanadium; high-strength; low-alloy; plates; riveted
construction; shapes; sheet piling; steel; structural steel;
welded construction

SUPPLEMENTARY REQUIREMENTS

Supplementary requirements shall not apply unless specified in the order or contract. Standardized
supplementary requirements for use at the option of the purchaser are listed in Specification A 6/A 6M.
Those that are considered suitable for use with this specification are listed by title:

S5. Charpy V-Notch Impact Test.
S18. Maximum Tensile Strength
S30. Charpy V-Notch Impact Test for Structural Shapes: Alternate Core Location
S32. Single Heat Bundles.
In addition, the following supplementary requirements are suitable for use:

S81. Tensile Strength

S81.1 For Grade 50 [345] steel of thicknesses 3⁄4 in. [20
mm] and less, the tensile strength shall be a minimum of 70 ksi
[485 MPa].

S90. Type

S90.1 The specific type of steel shall be as specified by the
purchaser in the order or contract.

TABLE 3 Alloy Content

TypeA Elements
Heat

Analysis, %

1 ColumbiumB 0.005–0.05C

2 Vanadium 0.01–0.15
3 ColumbiumB

Vanadium
Columbium plus vanadium

0.005-0.05C

0.01–0.15
0.02–0.15D

5 Titanium
Nitrogen
Vanadium

0.006-0.04
0.003–0.015
0.06 max

A Alloy content shall be in accordance with Type 1, 2, 3, or 5 and the contents
of the applicable elements shall be reported on the test report.

B Columbium shall be restricted to the following thicknesses and sizes unless
killed steel is furnished. Killed steel shall be confirmed by a statement of killed steel
on the test report, or by a report on the presence of a sufficient quantity of a strong
deoxidizing element, such as silicon at 0.10 % or higher, or aluminum at 0.015 %
or higher. See table below.

C Product analysis limits = 0.004 to 0.06 %.
D Product analysis limits = 0.01 to 0.16 %.

Grades

Maximum Plate, Bar,
Sheet

Piling, Zees, and Rolled
Tee Thicknesses, in. [mm]

Maximum Structural
Shape Flange or Leg

Thickness,
in. [mm]

42, 50, and 55 3⁄4 1.5
[290, 345, and
380]

[20] [40]

60 and 65 1⁄2 1
[415 and 450] [13] [25]

TABLE 4 Tensile RequirementsA

Grade

Yield Point, min Tensile Strength, min
Minimum Elonga-

tion, % B,C,D

ksi [MPa] ksi [MPa]
in 8 in.

[200 mm]
in 2 in.

[50 mm]

42 [290] 42 [290] 60 [415] 20 24
50 [345] 50 [345] 65 [450] 18 21
55 [380] 55 [380] 70 [485] 17 20
60 [415] 60 [415] 75 [520] 16 18
65 [450] 65 [450] 80 [550] 15 17
A See specimen Orientation under the Tension Tests section of Specification

A 6/A 6M.
B Elongation not required to be determined for floor plate.
C For wide flange shapes over 426 lb/ft [634 kg/m], elongation in 2 in. [50 mm]

of 19 % minimum applies.
D For plates wider than 24 in. [600 mm], the elongation requirement is reduced

two percentage points for Grades 42, 50, and 55 [290, 345, and 380], and three
percentage points for Grades 60 and 65 [415 and 450]. See elongation require-
ment adjustments in the Tension Tests section of Specification A 6/A 6M.

A 572/A 572M – 07

3
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