ASTM A595-04
(Specification)Standard Specification for Steel Tubes, Low-Carbon, Tapered for Structural Use
Standard Specification for Steel Tubes, Low-Carbon, Tapered for Structural Use
SCOPE
1.1 This specification covers three grades of seam-welded, round, tapered steel tubes for structural use. Grades A and B are of low-carbon steel composition and Grade C is of weather-resistant steel composition.
1.2 This tubing is produced in welded sizes in a range of diameters from 2 3/8 to 30 in. (63.5 to 762.0 mm) inclusive. Wall thicknesses range from 0.1046 to 0.375 in. (2.66 to 9.53 mm). Tapers are subject to agreement with the manufacturer.
1.3 The values stated in inch-pound units are to be regarded as the standard.
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Designation: A 595 – 04
Standard Specification for
Steel Tubes, Low-Carbon or High-Strength Low-Alloy,
1
Tapered for Structural Use
This standard is issued under the fixed designation A 595; 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.
1. Scope* 3.1.4 Supplementary requirements, if any.
1.1 This specification covers three grades of seam-welded,
4. General Requirements for Delivery
round, tapered steel tubes for structural use. Grades A and B are
4.1 Required date of shipment or date of receipt, and
of low-carbon steel or high-strength low-alloy steel composi-
4.2 Special shipping instructions, if any.
tion and Grade C is of weather-resistant steel composition.
1.2 This tubing is produced in welded sizes in a range of
5. Manufacture
3
diameters from 2 ⁄8 to 30 in. (63.5 to 762.0 mm) inclusive. Wall
5.1 Tube steel shall be hot-rolled aluminum-semikilled or
thicknesses range from 0.1046 to 0.375 in. (2.66 to 9.53 mm).
fine-grained killed sheet or plate manufactured by one or more
Tapers are subject to agreement with the manufacturer.
of the following processes: open-hearth, basic-oxygen, or
1.3 The values stated in inch-pound units are to be regarded
electric-furnace.
as the standard.
5.2 Tubes shall be made from trapezoidal sheet or plate that
2. Referenced Documents is preformed and then seam welded. Tubes shall be brought to
2 final size and properties by roll compressing cold on a
2.1 ASTM Standards:
hardened mandrel.
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
6. Chemical Composition
A 588/A 588M Specification for High-Strength Low-Alloy
6.1 Steel shall conform to the requirements for chemical
Structural Steel with 50 ksi [345 MPa] Minimum Yield
composition as prescribed in Table 1 and chemical analysis
Point to 4-in. [100-mm] Thick
shall be in accordance with Test Methods, Practices, and
A 606 Specification for Steel, Sheet and Strip, High-
Terminology A 751.
Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with
6.2 For Grade C material, the atmospheric corrosion-
Improved Atmospheric Corrosion Resistance
resistance index, calculated on the basis of the chemical
A 751 Test Methods, Practices, and Terminology for
composition of the steel, as described in Guide G 101, shall be
Chemical Analysis of Steel Products
6.0 or higher.
G 101 Guide for Estimating the Atmospheric Corrosion
Resistance of Low-Alloy Steels
NOTE 1—The user is cautioned that the Guide G 101 predictive
equation for calculation of an atmospheric corrosion-resistance index has
3. Ordering Information
been verified only for the composition limits stated in that guide.
3.1 The inquiry and order should indicate the following:
6.3 When required by the purchase order, the manufacturer
3.1.1 Large and small diameters (in.), length (ft), wall
shall supply guidance concerning corrosion resistance that is
thickness (in.), and taper (in./ft);
satisfactory to the purchaser.
3.1.2 (see Table 1 and Table 2);
7. Mechanical Properties
3.1.3 Extra test material requirements, if any; and
7.1 Tension Test:
7.1.1 Requirements—The material as represented by the test
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
specimens shall conform to the requirements as to tensile
Stainless Steel, and Related Alloys, and is the direct responsibility of Subcommittee
properties as prescribed in Table 2.
A01.09 on Carbon Steel Tubular Products.
Current edition approved Jan. 1, 2004. Published February 2004. Originally
7.1.2 Number of Tests:
approved in 1969. Last previous edition approved in 2002 as A 595 – 98 (2002).
7.1.2.1 For coil—One or more tension tests as defined in
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Table 2 shall be made from the large end of one tube produced
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
from each coil when the trapezoidal sheets are made from coil.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*A Summary of Changes section appears at the end of this standard.
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A595–04
TABLE 1 Chemical Requirements
Composition, %
A
Element Grade A Grade B Grade C
Heat Product Heat Product Heat Product
min max min max min max min max min max min max
Carbon 0.15 0.25 0.12 0.29 0.15 0.25 0.12 0.29 — 0.12 — 0.15
Manganese 0.30 0.90 0.26 0.94 0.40 1.35 0.35 1.40 0.20 0.50 0.17 0.53
Phosphorus — 0.035 — 0.045 — 0.035
...
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