By Authority Of
THE UNITED STATES OF AMERICA
Legally Binding Document
By the Authority Vested By Part 5 of the United States Code 552(a) and
Part 1 of the Code of Regulations 51 the attached document has been duly
INCORPORATED BY REFERENCE and shall be considered legally
binding upon all citizens and residents of the United States of America.
HEED THIS NOTICE: Criminal penalties may apply for noncompliance.
Official Incorporator:
THE EXECUTIVE DIRECTOR
OFFICE OF THE FEDERAL REGISTER
WASHINGTON, D.C.
Document Name:
CFR Section(s):
Standards Body:
e
ASTM A570: Hot-Rolled Carbon Steel Sheet and Strip,
Structural Quality
24 CFR 200, Subpart S
American Society for Testing and Materials
ANSljASTMA 570 - 79
Standard Specification for
HOT-.ROLLED CARBON STEEL SHEET AND STRIP,
STRUCTURAL QUALlTY1
This Standard is issued under the fixed designation A 570; the number immediately following the designation indicates
the year of original adoption or, in the case-of revision,. the year oflast revision. A number in parenthese_s indicates the
year of last reapproval.
This specification has been approved for use by agencies of the Department of Defonse and for listing in the DoD Index of
Specifications and Standards. -
1. Scope
1.1 This specification covers hot-rolled
carbon steel sheet and strip of structural qual-
ity in cut lengths or coils. This material is
intended for structural pUI:poses where me-
chanical test values are required, and is avail"
able in a maximum thickness of 0.2299 in.
(5.8 mm) except as limited by Specification
A 568.
1.1.2 The following grades are covered in
this specification:
Grade
30
33
36
40
45
50
Mechanical Properties
Yield Point, min,
psi (MPa)
30 000 (2\0)
33 000 (230)
36 000 (250)
40 000 (280)
45 000 (3\0)
50 000 (340)
Tensile Strength,
min, psi (MPa)
49 000 (340)
52 000 (360)
53 000 (365)
55 000 (380)
60 000 (4\0)
65 000 (450)
NOTE I-The values stated in inch-pound units
are to be regarded as the standard.
2. Applicable Documents
2.1 ASTM Standard:
A 568, Specification for Steel, Carbon arid
High-Strength Low-Alloy
Sheet, Hot-Rolled Strip, and Cold-
Rolled Sheet, General Requirements
2
3. General Requirements for Delivery
3.1 Material furnished under this specifi-
cation shall conform to the applicable require-
ments of the current edition of Specification
A 568, unless otherwise provided herein.
4. Ordering Information
4.1 Orders for material under this specifi-
530
cation shall include the following information,
as required, to describe the required material
adequately: - ,
4.1.1 ASTM specifieation number and
date of issue, and grade,
4.1.2 Copper-bearing steel (if required),
4.1.3 Special requirements (if required),
4.1.4 Name of material sheets
or strip),
4.1.5 Condition (Material t6 this specifi-
cation is furnished in the hot-rolled condition.
Pickled (or blast cleaned) should be specified
if required. Material so ordered will be oiled
unless ordered dry), .
4.1.6 Dimensions, including type of edges,
4.1.7 Coil size requirements, and
4.1.8 Cast or heat (formerly ladle) analysis
or test report (request, ifrequired).
NOTE 2 - A typical ordering description is as
follows: ASTM A 570, Grade 36, Hot-Rolled
Sheets, 0.075 by 36 cut edge by 96 in.
S. Chemical Requirements
5.1 The cast or heat analysis of the steel
shall conform to the requirements prescribed
in Table 1.
6. Physical Requirements
6.1 Tensile Properties-The material as
1 This specification is under the jurisdiction .of ASTM
Committee A-l on Steel, Stainless Steel and Related
Alloys, and, is the direct responsibility of Subcommittee
A01.l9 oil Sheet Steel and Steel Sheets.
Current edition approved Aug. 31, 1979. Published Oc-
tober 1979. Originally published as A 570 - 66 T. Last pre-
vious edition A 570 - 78.
2 Annual Book of ASTM Standards, Part 3.
represented by the test specimens shall con-
form to the requirements as to tensile prop-
erties prescribed in Table 2.
6.2 Bending Properties- The bend test
specimens shall stand being bent at room
temperature in any direction through 180 deg
without cracking on the outside of the bent
portion to an inside diameter which shall have
a relation to the thickness of the specimen as
prescribed in Table 3.
7. Test Specimens
7.1 Tension test specimens shall be taken
longitudinally.
8. Number of Tests
8.1 Two tension tests and two bend tests
shall be made from each heat or from each lot
of 50 tons (45 Mg). When the amount of
A 570
finished material from a heat or lot is less than
50 tons, only one tension test and one bend
test shall be made. When material rolled from
one heat differs 0.050 in. (1.27 mm) or more
in thickness, one tension test and one bend
test shall be made from both the thickest and
thinnest material rolled regardless of the
weight represented.
8.2 Retests - If one test fails, two more
tests shall be run from the same lot, in which
case both tests shall conform to the require-
ments prescribed in this specification; other-
wise, the lot under test shall stand rejected.
9. Packaging
9.1 Coil Size - Small coils result from the
cutting of full-size coils for center test pur-
poses. These small coils are acceptable under
this specification.
TABLE 1 Chemical Requirements
Tensile strength, min, psi
(MPa)
Yield point, min, psi
(MPa)
Elongation in 2 in. (50
mm), min, %, for
thicknesses:
0.2299 to 0.0972 in.
(5.84 to 2.46 mm),
inel
0.0971 to 0.0636 in.
(2.45 to 1.62 mm),
inel
0.0635 to 0.0255 in.
(1.61 to 0.65 mm),
incl
Elongation in 8 in. (200
mm), min, %, for
thicknesses:
0.2299 to 0.0972 in.
(5.84 to 2.46 mm),
inel
0.0971 to 0.0892 in.
(2.45 to 2.26 mm),
inel
Element
Carbon, max
Manganese, max
Phosphorus, max
Sulfur, max
Copper, when copper is
specified, min
Composition, %
Grades 30,
33, 36, and 40
0.25
0.90
0.04
0.05
0 2 0 ~
Grades 45
and 50
0.25
1.35
0.04
0.05
0.20
TABLE 2 Tensile Requirements
Grade 30 Grade 33 Grade 36 Grade 40
49 000 (340) 52 000 (360) 53 000 (365) 55 000 (380)
30 000 (210) 33 000 (230) 36 000 (250) 40 000 (280)
25.0 23.0 22.0 21.0
24.0 22.0 21.0 20.0
21.0 18.0 17.0 15.0
19.0 18.0 17.0 16.0
17.0 16.0 15.0 14.0
531
Grade 45 Grade 50
60 000 (410) 65 000 (450)
45 000 (310) 50 000 (340)
19.0 17.0
18.0 16.0
13.0 11.0
14.0 12.0
12.0 10.0
~ ~ ~ A 570
TABLE 3 Bend Test Requirements
Grade
30
33
36
40
45
50
Ratio of Bend Diameter to
Thickness of Specimen
iY2
1>'.
2
21'2
3
The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in
connection with any item mentionetf in this standard. Users oJ this stantfard are expressly aavised that determination of the
validity of any such patent rights, and the risk of infringement of such rights, are entirely their own resppnsibility.
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 reviston of this standard or
for additional standards and should be addressed to ASTM 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, 1916 Race St., Philadelphia, Pa.
19103, which 'will schedule a further hearing ,regarding your comments. Failing satisfaction there, you may appeal to the
ASTM Board of Directors.
532
