ASTM A 618/A 618M Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
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ASTM A 618/A 618M Document Information:
Title
Standard Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
ASTM International
Publication Date:
Mar 1, 2004
Scope:
(Footnote *)
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.
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 G 101 or actual data.
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 nonconformance with the standard.
Footnote * - A Summary of Changes section appears at the end of this
standard.
Keywords:
- high-strength low-alloy steel
- seamless steel tube
- steel tube
- structural steel tubing
- welded steel tubing
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