Standard Specification for Cold-Formed Electric-Fusion (Arc) Welded High-Strength Low<span class='unicode'>–</span>Alloy Structural Tubing in Shapes, with 50 ksi [345 MPa] Minimum Yield Point

SCOPE
1.1 This specification covers three Types and two Grades of cold formed electric-fusion (arc) welded high-strength low-alloy steel tubing of 50 ksi [345 MPa] minimum yield point for use in welded or bolted construction of buildings and for general structural purposes.
1.2 This tubing is produced in square and rectangular sizes with a periphery of 200 in. [500 cm] or less and a specified wall thickness of 1.00 in. [25 mm] or less. Tubes are joined by two longitudinal electric-fusion (arc) welds. Circumferential welds are disallowed. Sizes outside of those listed in Tables 1 and 2 may be ordered provided all other requirements of the specification are met. Typical lengths are 15–50 ft. [5-15 m].
Note 1—Products manufactured to this specification may not be suitable for those applications such as dynamically loaded elements in welded structures, etc. where low-temperature toughness properties may be important. (See Supplementary Requirement S1)
1.3 This specification covers the following Types:
1.3.1 Type 1—Welded with backing, backing left in the product,
1.3.2 Type 2—Welded with backing, backing removed,
1.3.3 Type 3—Welded without backing.
1.4 Tubing is available in Grades 50 [345] and 50W [345W]. Grade 50 [345] is manufactured from high-strength low-alloy steel. Grade 50W [345W] is manufactured from high-strength low-alloy steel with enhanced atmospheric corrosion resistance. (See 10.1.2) The Grades may not be interchanged without approval of the purchaser. ASTM Specifications for plate that may be applied to Grade 50 [345] and 50W [345W] are listed in Reference Documents and in Table 3.
1.5 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be 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.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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ASTM A1065/A1065M-09 - Standard Specification for Cold-Formed Electric-Fusion (Arc) Welded High-Strength Low<span class='unicode'>&#x2013;</span>Alloy Structural Tubing in Shapes, with 50 ksi [345 MPa] Minimum Yield Point
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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
Designation:A1065/A1065M −09
StandardSpecification for
Cold-Formed Electric-Fusion (Arc) Welded High-Strength
Low–Alloy Structural Tubing in Shapes, with 50 ksi [345
MPa] Minimum Yield Point
This standard is issued under the fixed designation A1065/A1065M; 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.
1. Scope standard. Within the text, the SI units are shown in brackets.
The values stated in each system may not be exact equivalents;
1.1 This specification covers three Types and two Grades of
therefore,eachsystemshallbeusedindependentlyoftheother.
cold formed electric-fusion (arc) welded high-strength low-
Combining values from the two systems may result in noncon-
alloy steel tubing of 50 ksi [345 MPa] minimum yield point for
formance with the standard.
use in welded or bolted construction of buildings and for
1.6 This standard does not purport to address all of the
general structural purposes.
safety concerns, if any, associated with its use. It is the
1.2 This tubing is produced in square and rectangular sizes
responsibility of the user of this standard to establish appro-
withaperipheryof200in.[500cm]orlessandaspecifiedwall
priate safety and health practices and determine the applica-
thickness of 1.00 in. [25 mm] or less. Tubes are joined by two
bility of regulatory limitations prior to use.
longitudinal electric-fusion (arc) welds. Circumferential welds
are disallowed. Sizes outside of those listed in Tables 4 and 5
2. Referenced Documents
may be ordered provided all other requirements of the speci-
2.1 ASTM Standards:
fication are met. Typical lengths are 15–50 ft. [5-15 m].
A6/A6M Specification for General Requirements for Rolled
NOTE 1—Products manufactured to this specification may not be
suitable for those applications such as dynamically loaded elements in Structural Steel Bars, Plates, Shapes, and Sheet Piling
welded structures, etc. where low-temperature toughness properties may
A242/A242M Specification for High-Strength Low-Alloy
be important. (See Supplementary Requirement S1)
Structural Steel
1.3 This specification covers the following Types:
A572/A572M Specification for High-Strength Low-Alloy
1.3.1 Type 1—Welded with backing, backing left in the
Columbium-Vanadium Structural Steel
product,
A588/A588M Specification for High-Strength Low-Alloy
1.3.2 Type 2—Welded with backing, backing removed,
Structural Steel, up to 50 ksi [345 MPa] Minimum Yield
1.3.3 Type 3—Welded without backing.
Point, with Atmospheric Corrosion Resistance
A656/A656M Specification for Hot-Rolled Structural Steel,
1.4 Tubing is available in Grades 50 [345] and 50W
High-Strength Low-Alloy Plate with Improved Formabil-
[345W]. Grade 50 [345] is manufactured from high-strength
ity
low-alloy steel. Grade 50W [345W] is manufactured from
A700 Practices for Packaging, Marking, and Loading Meth-
high-strength low-alloy steel with enhanced atmospheric cor-
ods for Steel Products for Shipment
rosion resistance. (See 10.1.2) The Grades may not be inter-
A709/A709M Specification for Structural Steel for Bridges
changed without approval of the purchaser. ASTM Specifica-
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
tions for plate that may be applied to Grade 50 [345] and 50W
Alloys, and Ferroalloys
[345W] are listed in Reference Documents and in Table 1.
A945/A945M Specification for High-Strength Low-Alloy
1.5 This specification is expressed in both inch-pound units
Structural Steel Plate with Low Carbon and Restricted
and in SI units; however, unless the purchase order or contract
Sulfur for Improved Weldability, Formability, and Tough-
specifies the applicable M specification designation (SI units),
ness
the inch-pound units shall apply. The values stated in either SI
G101 Guide for Estimating the Atmospheric Corrosion Re-
units or inch-pound units are to be regarded separately as
sistance of Low-Alloy Steels
This test method is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A01.09 on Carbon Steel Tubular Products. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Dec. 1, 2009. Published January 2010. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
A1065_A1065M-09 the ASTM website.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
A1065/A1065M−09
A
TABLE 1 ASTM Plate Specifications
4.1.6 Individual supplementary requirements, if required
Grade 50 [345] A572/A572M, A656/A656M, A709/
(Supplementary Requirements S1 to S4, inclusive).
A709M, A945/A945M
Grade 50W [345] A242/A242M, A588/A588M, A709/
5. Manufacture
A709M HPS 50W
A
5.1 The steel from which the tubing is made shall conform
Individual specifications may have more than one Grade or Type and provide
chemical requirements.
to Specifications A242/A242M, A572/A572M, A588/A588M,
A656/A656M, A709/A709M,or A945/A945M. The Specifi-
cations are identified in Table 1 according to Grade 50 [345] or
TABLE 2 Tensile Requirements
Grade 50W [345W]. The choice of Grade andASTM Standard
Grade 50 [345] Grade 50W [345W]
steel material is at the manufacturer’s option unless identified
Tensile strength, min, 60 000 [415] 70 000 [480]
in the purchase order (See Supplementary Requirement S3).
psi [MPa]
Yield strength, min, psi 50 000 [345] 50 000 [345]
5.2 Two equally shaped pieces of flat-rolled plate product of
[MPa]
the sameASTM plate specification shall be press brake formed
Elongation in 2 in. [50 21 21
mm],min.%
into halves of the finished size.Types 1 and 2 tubing shall have
continuous backup bars tack welded to each leg of one of the
half-sections. The two half sections shall be fitted together and
arc welded with two seam welds to complete the tubing. Type
2.2 AWS Standard
2 tubing shall have the backing removed after seam welding.
AWS D1.1 Structural Welding Code-Steel
Type 3 tubing shall be manufactured without backup bars.
2.3 Military Standard
MIL-STD-129 Marking for Shipment and Storage
5.3 The electric-fusion (arc) weld shall be deposited by the
2.4 Federal Standard
submerged arc welding process, flux cored arc welding process
Fed. Std. No. 123 Marking for Shipment
or gas metal arc welding process. The electrode shall be of
2.5 Steel Tube Institute
matching strength.
Hollow Structural Sections
5.4 Grade 50W [345W] backing shall be enhanced atmo-
2.6 AISC
sphericcorrosionresistantmaterial.Theelectrodeshallcomply
Manual of Steel Construction
with atmospheric corrosion resistance requirements.
3. Terminology 5.5 The standard weld shall be a partial joint penetration
Single-V-groove weld with groove depth not less than eighty
3.1 Definitions—For definitions of terms used in this speci-
percent of the material thickness. For complete joint penetra-
fication, refer to Terminology A941.
tion welds, see Supplementary Requirement S2.
3.2 Definitions of Terms Specific to This Standard:
5 5.6 The seam welds shall join the smaller flat sides of the
3.2.1 HSS , n—aHollowStructuralSectionisacold-formed
structural section. (See Supplementary Requirement S4 for the
welded steel tube used for welded or bolted construction of
option of joining the larger flat sides).
buildings, bridges and other structures.
5.7 Welding shall be in accordance with AWS D1.1, latest
3.2.2 electric fusion (arc) welded, n—a welding process that
edition.
uses an electric arc as the source of heat to melt and join
metals.
6. Material
3.2.3 weld reinforcement, n—that portion of the weld seam
6.1 Table 1 identifies ASTM high-strength low-alloy stan-
above the plane of the plate surface.
dard specification steel from which the tubing shall be manu-
factured. Some Specifications have more than one Grade or
4. Ordering Information
Type. The Specifications provide chemical compositions.
4.1 Orders for material under this specification shall contain
the following mandatory information:
7. Mechanical Properties
4.1.1 Size (outside dimensions, thickness and length),
7.1 The material as represented by the steel producer shall
4.1.2 Name Cold Formed Arc Welded HSLA Structural
conform to the requirements of Table 2.
Tubing,
4.1.3 Quantity (number of lengths of each size),
8. Permissible Variations in Dimensions
4.1.4 Type (1, 2, or 3),
8.1 Outside Dimensions—The outside dimensions measured
4.1.5 Grade 50 [345] or Grade 50W [345W],
across the flats at positions at least 2 in. [50 mm] from the ends
of the tubing shall not vary from the specified outside dimen-
Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
sions by more than the applicable amount given in Table 3.
Miami, FL 33126, http://www.aws.org.
Measurement shall not include the weld reinforcement. Table 3
Available from Global Engineering Documents, 15 Inverness Way, East
includes allowances for convexity and concavity.
Englewood, CO 80112-5704, http://www.global.ihs.com.
Available from Steel Tube Institute of North America, 2000 Ponce de Leon,
8.2 Thickness—The permissible variation in wall thickness
Suite 600, Coral Gables, FL 33134.
shall be +0.03/-0.01in. [+0.76/-0.25 mm] (Table 1 of Specifi-
Available from American Institute of Steel Construction (AISC), One E.
Wacker Dr., Suite 700, Chicago, IL 60601-2001, http://www.aisc.org. cation A6/A6M).
A1065/A1065M−09
TABLE 3 Permissible Variations in Outside Flat Dimensions
Nominal Outside Large Flat Dimension Permissible Variation Over and Under Nominal Outside Flat Dimensions
Squares and rectangles with a large flat to small flat ratio less than 3.0 0.015 times each flat dimension
Rectangles with a large flat to small flat ratio equal to or greater than 3.0 0.02 times each flat dimension
A
TABLE 4 Permissible Variations in Outside Flat Dimensions
Wall in./mm 0.313 [8] 0.375 [10] 0.500 [13] 0.625 [16] 0.750 [19] 1.000 [25]
Outside Dimensions
in./mm
12 × 12 [300 × 300] XXXXXX
13 × 13 [330 × 330] XXXXXX
14 × 1
...

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