ASTM A595/A595M-22

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Designation: A595/A595M − 18 A595/A595M − 22
Standard Specification for
Steel Tubes, Low-Carbon or High-Strength Low-Alloy,
Tapered for Structural Use
This standard is issued under the fixed designation A595/A595M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. 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 or high-strength low-alloy steel composition and Grade C is of weather-resistant steel composition.
1.1.1 The product may be modified from its round cross section into other shapes without subsequent retesting.
1.2 This tubing is produced in welded sizes in a range of diameters from 2 ⁄8 to 30 in. [60 to 762 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 either SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance with the standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A588/A588M Specification for High-Strength Low-Alloy Structural Steel, up to 50 ksi [345 MPa] Minimum Yield Point, with
Atmospheric Corrosion Resistance
A606/A606M Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with Improved
Atmospheric Corrosion Resistance
A751 Test Methods and Practices for Chemical Analysis of Steel Products
A1011 Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength
Low-Alloy with Improved Formability, and Ultra-High Strength
A1018 Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial, Drawing, Structural,
High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.09
on Carbon Steel Tubular Products.
Current edition approved Nov. 1, 2018Sept. 1, 2022. Published November 2018September 2022. Originally approved in 1969. Last previous edition approved in 20142018
as A595/A595M – 14.A595/A595M – 18. DOI: 10.1520/A0595_A0595M-18.10.1520/A0595_A0595M-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A595/A595M − 22
G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels
3. Ordering Information
3.1 The inquiry and order should indicate the following:
3.1.1 Large and small diameters (in.) [mm], length (ft) [m], wall thickness (in.) [mm], taper (in./ft) [mm/m];
3.1.2 (see Table 1 and Table 2);
3.1.3 Extra test material requirements, if any; and
3.1.4 Supplementary requirements, if any.
4. General Requirements for Delivery
4.1 Required date of shipment or date of receipt, and
4.2 Special shipping instructions, if any.
5. Manufacture
5.1 Tube steel shall be hot-rolled aluminum-semikilled or fine-grained killed sheet or plate manufactured by one or more of the
following processes: open-hearth, basic-oxygen, or electric-furnace.
5.2 Tubes shall be made from trapezoidal sheet or plate that is preformed and then seam welded. Tubes shall be brought to final
size and properties by roll compressing cold on a hardened mandrel.
6. Chemical Composition
6.1 Steel shall conform to the requirements for chemical composition given in Tables 1 and 3Table 1 and Table 3. Chemical
requirements for high-strength low-alloy steels shall be found in Specifications A1011 and A1018. Information regarding chemical
requirements for improved atmospheric corrosion resistant steels shall be found in Specification A606/A606M. Chemical analysis
shall be in accordance with Test Methods, Practices, and Terminology A751.
6.2 For Grade C material, the atmospheric corrosion-resistance index, calculated on the basis of the chemical composition of the
steel, as described in Guide G101, shall be 6.0 or higher.
NOTE 1—The user is cautioned that the Guide G101 predictive equation for calculation of an atmospheric corrosion-resistance index has been verified
only for the composition limits stated in that guide.
6.3 When required by the purchase order, the manufacturer shall supply guidance concerning corrosion resistance that is
satisfactory to the purchaser.
7. Mechanical Properties
7.1 Tension Test:
7.1.1 Requirements—The material, as represented by the test specimens, shall conform to the requirements as to tensile properties
given in Table 2.
7.1.2 Number of Tests:
7.1.2.1 For coil—One or more tension tests as defined in Table 2 shall be made from the large end of one tube on each 100, or
fewer, tubes produced from each coil in the applicable thickness class (see Table 4).
7.1.2.2 For plate—One or more tension tests as defined in Table 2 shall be made from the large end of one tube on a lot produced
from a single heat of plate product of uniform thickness.
A595/A595M − 22
TABLE 1 Chemical Requirements
Composition by Heat Analysis, %
Grade A Grade B Grade C
Elements Carbon HSLA SS HSLAS Cl1 HSLAS Cl2 Carbon Steel HSLA SS HSLAS Cl1 HSLAS Cl2 A 606 A 588/A A 588/B A 588/C A 588/K
Steel
Carbon 0.15–0.25 0.25 max 0.23 max 0.15 max 0.15–0.25 0.25 max 0.26 max 0.15 max 0.22 max 0.19 max 0.20 max 0.15 max 0.17 max
Manganese 0.30–0.90 1.35 max 1.35 max 1.35 max 0.40–1.35 1.35 max 1.50 max 1.50 max 1.25 max 0.80–1.25 0.75–1.35 0.80–1.35 0.50–1.20
A
Phosphorous 0.035 max 0.035 max 0.04 max 0.04 max 0.035 max 0.035 max 0.04 max 0.04 max 0.04 max 0.04 max 0.04 max 0.04 max
Sulfur 0.035 max 0.04 max 0.04 max 0.04 max 0.035 max 0.04 max 0.04 max 0.04 max 0.04 max 0.05 max 0.05 max 0.05 max 0.05 max
B B B B B B B B A
Silicon 0.060 max 0.060 max 0.060 max 0.060 max 0.060 max 0.060 max 0.060 max 0.060 max 0.30–0.65 0.15–0.50 0.15–0.40 0.25–0.50
C,D A
Copper . 0.20 max 0.20 max 0.20 max . 0.20 max 0.20 max 0.20 max 0.25–0.40 0.20–0.40 0.20–0.50 0.30–0.50
C A
Copper . 0.20 max 0.20 max 0.20 max . 0.20 max 0.20 max 0.20 max 0.25–0.40 0.20–0.40 0.20–0.50 0.30–0.50
C,E A
Chromium . 0.15 max 0.15 max 0.15 max . 0.15 max 0.15 max 0.15 max 0.40–0.65 0.40–0.70 0.30–0.50 0.40–0.70
A
Chromium . 0.15 max 0.15 max 0.15 max . 0.15 max 0.15 max 0.15 max 0.40–0.65 0.40–0.70 0.30–0.50 0.40–0.70
C A
Nickel . 0.20 max 0.20 max 0.20 max . 0.20 max 0.20 max 0.20 max 0.40 max 0.50 max 0.25–0.50 0.40 max
A
Nickel . 0.20 max 0.20 max 0.20 max . 0.20 max 0.20 max 0.20 max 0.40 max 0.50 max 0.25–0.50 0.40 max
C,E A A A
Molybdenum . 0.06 max 0.06 max 0.06 max . 0.06 max 0.06 max 0.06 max . 0.10 max
A A A
Molybdenum . 0.06 max 0.06 max 0.06 max . 0.06 max 0.06 max 0.06 max . 0.10 max
F A
Vanadium . 0.008 max 0.01 min 0.01 min . 0.008 max 0.01 min 0.01 min . 0.02–0.10 0.01–0.10 0.01–0.10
A
Vanadium . 0.008 max 0.01 min 0.01 min . 0.008 max 0.01 min 0.01 min . 0.02–0.10 0.01–0.10 0.01–0.10
F,G A A A
Niobium . 0.008 max 0.005 min 0.005 min . 0.008 max 0.005 min 0.005 min . 0.005–0.05
D A A A
Niobium . 0.008 max 0.005 min 0.005 min . 0.008 max 0.005 min 0.005 min . 0.005–0.05
A A A A A A
Nitrogen . . . . . . .
B A A A A A A A A
Aluminum . . . . .
A
There There is no limit; however, the analysis shall be reported.
B
Silicon Silicon or silicon in combination with aluminum must be sufficient to ensure uniform mechanical properties. Their sum shall be greater than or equal to 0.020 %.
C
For HSLA steels the sum of copper, nickel, chromium, and molybdenum shall not exceed 0.50 % on heat analysis. When one of these elements are specified by the purchaser, the sum does not apply, in which case
only the individual limits of the remaining elements shall apply. “{” means there is no requirement.
D
For HSLA steels when copper is specified, the copper limit is a minimum requirement. When copper steel is not specified, the copper limit is a maximum requirement.
E
For SS steel the sum of chromium and molybdenum shall not exceed 0.16 % on heat analysis. When one or more of these elements are specified by the purchaser, the
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