ASTM A847/A847M-05
(Specification)Standard Specification for Cold-Formed Welded and Seamless High-Strength, Low-Alloy Structural Tubing with Improved Atmospheric Corrosion Resistance
Standard Specification for Cold-Formed Welded and Seamless High-Strength, Low-Alloy Structural Tubing with Improved Atmospheric Corrosion Resistance
ABSTRACT
This specification covers standard requirements for cold-formed welded and seamless high-strength, low-alloy round, square, rectangular, or special shaped structural tubing for welded, riveted, or bolted construction of bridges and buildings and for general structural purposes where high strength and enhanced atmospheric corrosion resistance are required. Round and shaped tubing shall meet the required tensile properties such as tensile strength, yield strength, and elongation. Heat and product analysis shall be performed wherein steel materials shall conform to the required chemical composition for carbon, manganese, phosphorus, sulphur, and copper. Outside dimension tolerances for square and rectangular tubing shall not exceed the specified plus and minus tolerances. Length tolerance for structural tubing shall be in accordance with the specified values. Twist tolerances for square and rectangular structural tubing shall be indicated.
SCOPE
1.1 This specification covers cold-formed welded and seamless high-strength, low-alloy round, square, rectangular, or special shaped structural tubing for welded, riveted, or bolted construction of bridges and buildings and for general structural purposes where high strength and enhanced atmospheric corrosion resistance are required (Note 0). The atmospheric corrosion resistance of this steel in most environments is substantially better than carbon steel with or without copper addition (). When properly exposed to the atmosphere, this steel can be used bare (unpainted) for many applications. When this steel is used in welded construction, the welding procedure shall be suitable for the steel and the intended service.
1.2 This tubing is produced in welded sizes with a maximum periphery of 64 in. [1626 mm] and a maximum wall of 0.625 in. [15.9 mm], and in seamless with a maximum periphery of 32 in. [813 mm] and a maximum wall of 0.500 in. [12.7 mm]. Tubing having other dimensions may be furnished provided such tubing complies with all other requirements of this specification.
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 is to be used independently of the other, without combining values in any way.Note 0Products manufactured to this specification may not be suitable for those applications where low temperature notch toughness properties may be important, such as dynamically loaded elements in welded structures, etc. Note 2
For methods of estimating the atmospheric corrosion resistance of low alloy steels see Guide G 101 or actual data.
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Standards Content (Sample)
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Designation: A847/A847M – 05
Standard Specification for
Cold-Formed Welded and Seamless High-Strength, Low-
Alloy Structural Tubing with Improved Atmospheric
1
Corrosion Resistance
This standard is issued under the fixed designationA847/A847M; 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.
properties may be important, such as dynamically loaded elements in
1. Scope*
welded structures, etc.
1.1 This specification covers cold-formed welded and seam-
NOTE 2—For methods of estimating the atmospheric corrosion resis-
less high-strength, low-alloy round, square, rectangular, or
tance of low alloy steels see Guide G101 or actual data.
special shaped structural tubing for welded, riveted, or bolted
2. Referenced Documents
construction of bridges and buildings and for general structural
2
purposes where high strength and enhanced atmospheric cor-
2.1 ASTM Standards:
rosion resistance are required (Note 1). The atmospheric
A370 Test Methods and Definitions for Mechanical Testing
corrosion resistance of this steel in most environments is
of Steel Products
substantially better than carbon steel with or without copper
A700 PracticesforPackaging,Marking,andLoadingMeth-
addition (Note 2). When properly exposed to the atmosphere,
ods for Steel Products for Shipment
this steel can be used bare (unpainted) for many applications.
A751 Test Methods, Practices, andTerminology for Chemi-
When this steel is used in welded construction, the welding
cal Analysis of Steel Products
procedure shall be suitable for the steel and the intended
G101 Guide for Estimating the Atmospheric Corrosion
service.
Resistance of Low-Alloy Steels
1.2 This tubing is produced in welded sizes with a maxi-
3. Ordering Information
mum periphery of 64 in. [1626 mm] and a maximum wall of
0.625 in. [15.9 mm], and in seamless with a maximum
3.1 Orders for material under this specification should
periphery of 32 in. [813 mm] and a maximum wall of 0.500 in.
include the following, as required, to describe the desired
[12.7 mm]. Tubing having other dimensions may be furnished
material adequately:
provided such tubing complies with all other requirements of
3.1.1 ASTM specification number,
this specification.
3.1.2 Quantity (feet, metres, or number of lengths),
1.3 The values stated in either inch-pound units or SI units
3.1.3 Name of material (cold-formed tubing),
are to be regarded separately as standard. Within the text, the
3.1.4 Method of manufacture (welded or seamless),
SI units are shown in brackets. The values stated in each
3.1.5 Size (outside diameter and nominal wall thickness for
system are not exact equivalents; therefore, each system is to
round tubing and the outside dimensions and nominal wall
be used independently of the other, without combining values
thickness for square and rectangular tubing),
in any way.
3.1.6 Length (specific or random, see 10.3),
3.1.7 End condition (see 14.2),
NOTE 1—Products manufactured to this specification may not be
3.1.8 Burr removal (see 14.2),
suitable for those applications where low temperature notch toughness
3.1.9 Certification (see Section 17),
3.1.10 End use, and
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
2
A01.09 on Carbon Steel Tubular Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2005. Published November 2005. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1985. Last previous edition approved in 2003 as A847 – 99a(2003). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0847_A0847M-05. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A847/A847M – 05
TABLE 2 Chemical Requirements
3.1.11 Special requirements.
Elements Heat Analysis Product Analysis
4. Process
Carbon, max 0.20 0.24
Manganese, max 1.35 1.40
4.1 The steel shall be made by one or more of the following
A
Phosphorus, max 0.15
processes: open hearth, basic oxygen, or electric furnace.
Sulphur, max 0.05 0.06
B B
Copper, min 0.20 0.18
5. Manufacture
A
Because of the degree to which phosphorus segregates, product analysis for
this element is not technologically appropriate for rephosphorized steels unless
5.1 The tubing shall be made by a welded or seamless
misapp
...
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