ASTM A618-01

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

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. Note 1--For methods of estimating the atmospheric corrosion resistance of low alloy steels see Guide G101 or actual data.
1.3 The values stated in inch-pound units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-2001
• 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 A618-99 - Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
• Effective Date: 10-Mar-2001
• Replaced By: ASTM A618/A618M-04 - Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
• 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 618 – 01
Standard Specification for
Hot-Formed Welded and Seamless High-Strength Low-Alloy
1
Structural Tubing
This standard is issued under the fixed designation A 618; 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 3. Ordering Information
1.1 This specification covers grades of hot-formed welded 3.1 Orders for material under this specification should
and seamless high-strength low-alloy square, rectangular, include the following as required to describe the material
round, or special shape structural tubing for welded, riveted, or adequately:
bolted construction of bridges and buildings and for general 3.1.1 Quantity (feet or number of lengths),
structural purposes. When the steel is used in welded construc- 3.1.2 Grade (Table 1 and Table 2),
tion, the welding procedure shall be suitable for the steel and 3.1.3 Material (round, square, or rectangular tubing),
the intended service. 3.1.4 Method of manufacture (seamless, buttwelded, or
1.2 Grade II has atmospheric corrosion resistance equiva- hot-stretch-reduced electric-resistance welded),
lent to that of carbon steel with copper (0.20 minimum Cu) 3.1.5 Size (outside diameter and nominal wall thickness for
Grades Ia and Ib have atmospheric corrosion resistance sub- round tubing and the outside dimensions and calculated nomi-
stantially better than that of Grade II (Note 1). When properly nal wall thickness for square and rectangular tubing),
exposed to the atmosphere, Grades Ia and Ib can be used bare 3.1.6 Length (specific or random, see 8.2),
(unpainted) for many applications. When enhanced corrosion 3.1.7 End condition (see 9.2),
resistance is desired, Grade III, copper limits may be specified. 3.1.8 Burr removal (see 9.2),
3.1.9 Certification (see 12.1),
NOTE 1—For methods of estimating the atmospheric corrosion resis-
3.1.10 Specification designation,
tance of low alloy steels see Guide G 101 or actual data.
3.1.11 End use, and
1.3 The values stated in inch-pound units are to be regarded
3.1.12 Special requirements.
as the standard.
4. Process
2. Referenced Documents
4.1 The steel shall be made by one or more of the following
2.1 ASTM Standards:
processes: open-hearth, basic-oxygen, or electric-furnace.
A 370 Test Methods and Definitions for MechanicalTesting
4.2 Steel may be cast in ingots or may be strand cast. When
2
of Steel Products
steels of different grades are sequentially strand cast, identifi-
A 700 Practices for Packaging, Marking, and Loading
cation of the resultant transition material is required. The
3
Methods for Steel Products for Domestic Shipment
producer shall remove the transition material by any estab-
A 751 Test Methods, Practices, and Terminology for
lished procedure that positively separates the grades.
2
Chemical Analysis of Steel Products
G 101 Guide for Estimating the Atmospheric Corrosion
5. Manufacture
4
Resistance of Low-Alloy Steels
5.1 The tubing shall be made by the seamless, furnace-
buttwelded (continuous-welded), or hot-stretch-reduced
electric-resistance-welded process.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
6. Chemical Composition
A01.09 on Carbon Steel Tubular Products.
Current edition approved Mar. 10, 2001. Published May 2001. Originally
6.1 Whensubjectedtotheheatandproductanalysis,respec-
published as A 618 – 68. Last previous edition A 618 – 99.
2 tively, the steel shall conform to the requirements prescribed in
Annual Book of ASTM Standards, Vol 01.03.
3
Table 1.
Annual Book of ASTM Standards, Vol 01.05.
4
Annual Book of ASTM Standards, Vol 03.02.
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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.
A 618–01
TABLE 1 Chemical Requirements
Element Composition, %
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 . . . . . . . . . . . . 0.30 0.33 0.30 0.35
B B
Copper, min 0.20 0.18 0.20 0.18 0
...