ASTM A618/A618M-04

Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing

ABSTRACT
This specification covers grades of hot-formed welded and seamless high-strength low-alloy square, rectangular, round, or special shape structural tubing for welded, riveted, or bolted construction of bridges and buildings and for general structural purposes. These grades are: Grade Ia and Ib; Grade II; and Grade III. When the steel is used in welded construction, the welding procedure shall be suitable for the steel and the intended service. The tubing shall be made by the seamless, furnace-buttwelded (continuous-welded), or hot-stretch-reduced electric-resistance-welded process. Tensile test and bend test shall be performed for the material to conform to the requirements specified. If the results of the mechanical tests representing any heat do not conform to a requirement, retests shall be made.
SCOPE
1.1 This specification covers grades of hot-formed welded and seamless high-strength low-alloy square, rectangular, round, or special shape structural tubing for welded, riveted, or bolted construction of bridges and buildings and for general structural purposes. When the steel is used in welded construction, the welding procedure shall be suitable for the steel and the intended service.
1.2 Grade II has atmospheric corrosion resistance equivalent to that of carbon steel with copper (0.20 minimum Cu) Grades Ia and Ib have atmospheric corrosion resistance substantially better than that of Grade II (Note 1). When properly exposed to the atmosphere, Grades Ia and Ib can be used bare (unpainted) for many applications. When enhanced corrosion resistance is desired, Grade III, copper limits may be specified. For methods of estimating the atmospheric corrosion resistance of low alloy steels see Guide G 101 or actual data.
1.3 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 shall be used independently of the other. Combining values from the two systems may result in non conformance with the standard.

General Information

• Status: Historical
• Publication Date: 29-Feb-2004
• ICS: 23.040.10 - Iron and steel pipes
• ICS: 23.040.40 - Metal fittings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.09 - Carbon Steel Tubular Products

Relations

• Replaces: ASTM A618-01 - Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
• Effective Date: 01-Mar-2004
• Replaced By: ASTM A618/A618M-04(2010) - Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
• Effective Date: 01-Apr-2010
• Referred By: ASTM C1802-23 - Standard Specification for Design, Testing, Manufacture, Selection, and Installation of Horizontal Fabricated Metal Access Hatches for Utility, Water, and Wastewater Structures
• Effective Date: 01-Mar-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A618/A618M – 04
Standard Specification for
Hot-Formed Welded and Seamless High-Strength Low-Alloy
1
Structural Tubing
This standard is issued under the fixed designationA618/A618M; 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 Department of Defense.
1. Scope* A370 Test Methods and Definitions for Mechanical Testing
of Steel Products
1.1 This specification covers grades of hot-formed welded
A700 PracticesforPackaging,Marking,andLoadingMeth-
and seamless high-strength low-alloy square, rectangular,
ods for Steel Products for Shipment
round, or special shape structural tubing for welded, riveted, or
A751 Test Methods, Practices, andTerminology for Chemi-
bolted construction of bridges and buildings and for general
cal Analysis of Steel Products
structural purposes. When the steel is used in welded construc-
G101 Guide for Estimating the Atmospheric Corrosion
tion, the welding procedure shall be suitable for the steel and
Resistance of Low-Alloy Steels
the intended service.
1.2 Grade II has atmospheric corrosion resistance equiva-
3. Ordering Information
lent to that of carbon steel with copper (0.20 minimum Cu)
3.1 Orders for material under this specification should
Grades Ia and Ib have atmospheric corrosion resistance sub-
include the following as required to describe the material
stantially better than that of Grade II (Note 1). When properly
adequately:
exposed to the atmosphere, Grades Ia and Ib can be used bare
3.1.1 Quantity (feet, metres, or number of lengths),
(unpainted) for many applications. When enhanced corrosion
3.1.2 Grade (Table 1 and Table 2),
resistance is desired, Grade III, copper limits may be specified.
3.1.3 Material (round, square, or rectangular tubing),
NOTE 1—For methods of estimating the atmospheric corrosion resis-
3.1.4 Method of manufacture (seamless, buttwelded, or
tance of low alloy steels see Guide G101 or actual data.
hot-stretch-reduced electric-resistance welded),
1.3 The values stated in either SI units or inch-pound units
3.1.5 Size (outside diameter and nominal wall thickness for
are to be regarded separately as standard. Within the text, the
round tubing and the outside dimensions and calculated nomi-
SI units are shown in brackets. The values stated in each
nal wall thickness for square and rectangular tubing),
system may not be exact equivalents; therefore, each system
3.1.6 Length (specific or random, see 8.2),
shall be used independently of the other. Combining values
3.1.7 End condition (see 9.2),
from the two systems may result in non-conformance with the
3.1.8 Burr removal (see 9.2),
standard.
3.1.9 Certification (see 12.1),
3.1.10 Specification designation (A618 or A618M, includ-
2. Referenced Documents
ing yeardate),
2
2.1 ASTM Standards:
3.1.11 End use, and
3.1.12 Special requirements.
1 4. Process
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
4.1 The steel shall be made by one or more of the following
A01.09 on Carbon Steel Tubular Products.
processes: open-hearth, basic-oxygen, or electric-furnace.
Current edition approved March 1, 2004. Published March 2004. Originally
4.2 Steel may be cast in ingots or may be strand cast. When
approved in 1968. Last previous edition approved in 2001 as A618–01. DOI:
10.1520/A0618_A0618M-04.
steels of different grades are sequentially strand cast, identifi-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cation of the resultant transition material is required. The
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
producer shall remove the transition material by any estab-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. lished procedure that positively separates the grades.
*A Summary of Changes section appears at the end of this standard.
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A618/A618M – 04
TABLE 1 Chemical Requirements
Composition, %
Element Grade Ia Grade Ib Grade II Grade III
Heat Product Heat Product Heat Product Heat Product
A A
Carbon, max 0.15 0.18 0.20 . . . 0.22 0.26 0.23 0.27
A A
Manganese 1.00 max 1.04 max 1.35 max 1.40 max 0.85–1.25 1.30 max 1.35 max 1.40 max
Phosphorus, max 0.15 0.16 0.025 0.035 0.025 0.035 0.025 0.035
Sulfur, max 0.025 0.045 0.025 0.035 0.025 0.035 0.025 0.035
Silicon, max
...