ASTM A334/A334M-04a(2021)
(Specification)Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service
Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service
ABSTRACT
This specification covers standard specification for several grades of minimum-wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, cobalt, and molybdenum. The number of tubes in a heat-treatment lot shall be determined from the size of the tubes. The tubes shall have a hardness number that does not exceed the prescribed Rockwell and Brinell hardness values. Several grades of steel shall conform to the following tensile properties: tensile strength, yield strength, and elongation. For Grades 1, 3, 6, 7, and 9, the notch-bar impact properties of each set of three impact specimens, including specimens for the welded joint in welded pipe, shall not be less than the prescribed values. Several mechanical tests shall be conducted, namely: flattening test; flare test (seamless tubes); flange test (welded tubes); reverse flattening test; hardness test; and impact tests. Hydrostatic or nondestructive electric test shall also be performed. Materials shall be tested for impact resistance at the prescribed temperature for the respective grades. Impact temperature reduction values shall be by any amount equal to the difference between the temperature reduction corresponding to the actual material thickness and the temperature reduction corresponding to Charpy specimen width actually tested.
SCOPE
1.1 This specification2 covers several grades of minimum-wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
1.2 Supplementary Requirement S1 of an optional nature is provided. This shall apply only when specified by the purchaser.
Note 1: For tubing smaller than 1/2 in. [12.7 mm] in outside diameter, the elongation values given for strip specimens in Table 1 shall apply. Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in outside diameter and with a wall thickness under 0.015 in. [0.4 mm].
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 must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
General Information
Standards Content (Sample)
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.
Designation:A334/A334M −04a (Reapproved 2021)
Standard Specification for
Seamless and Welded Carbon and Alloy-Steel Tubes for
1
Low-Temperature Service
This standard is issued under the fixed designationA334/A334M; 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 2. Referenced Documents
2 3
1.1 This specification covers several grades of minimum- 2.1 ASTM Standards:
wall-thickness, seamless and welded, carbon and alloy-steel A370 Test Methods and Definitions for Mechanical Testing
tubes intended for use at low temperatures. Some product sizes of Steel Products
may not be available under this specification because heavier A1016/A1016M Specification for General Requirements for
wall thicknesses have an adverse affect on low-temperature Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
impact properties. Steel Tubes
E23 Test Methods for Notched Bar Impact Testing of Me-
1.2 Supplementary Requirement S1 of an optional nature is
tallic Materials
provided. This shall apply only when specified by the pur-
chaser.
3. Ordering Information
1
NOTE 1—For tubing smaller than ⁄2 in. [12.7 mm] in outside diameter,
3.1 Orders for material under this specification should
the elongation values given for strip specimens in Table 1 shall apply.
1 include the following, as required to describe the desired
Mechanical property requirements do not apply to tubing smaller than ⁄8
material adequately:
in. [3.2 mm] in outside diameter and with a wall thickness under 0.015 in.
[0.4 mm].
3.1.1 Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (seamless or welded tubes),
1.3 The values stated in either inch-pound units or SI units
3.1.3 Grade (Table 1),
are to be regarded separately as standard. Within the text, the
3.1.4 Size (outside diameter and minimum wall thickness),
SI units are shown in brackets. The values stated in each
3.1.5 Length (specific or random),
system are not exact equivalents; therefore, each system must
3.1.6 Optional requirements (other temperatures, Section
be used independently of the other. Combining values from the
14; hydrostatic or electric test, Section 16),
two systems may result in nonconformance with the specifi-
3.1.7 Test report required, (Certification Section of Specifi-
cation. The inch-pound units shall apply unless the “M”
cation A1016/A1016M),
designation of this specification is specified in the order.
3.1.8 Specification designation, and
1.4 This standard does not purport to address all of the
3.1.9 Special requirements and any supplementary require-
safety concerns, if any, associated with its use. It is the
ments selected.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. General Requirements
mine the applicability of regulatory limitations prior to use.
4.1 Material furnished under this specification shall con-
1.5 This international standard was developed in accor-
form to the applicable requirements of the current edition of
dance with internationally recognized principles on standard-
Specification A1016/A1016M, unless otherwise provided
ization established in the Decision on Principles for the
herein.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Materials and Manufacture
Barriers to Trade (TBT) Committee.
5.1 The tubes shall be made by the seamless or automatic
welding process with no addition of filler metal in the welding
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
operation.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved Sept. 1, 2021. Published October 2021. Originally
3
approved in 1951. Last previous edition approved in 2016 as A334/A334M – 04a For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(2016). DOI: 10.1520/A0334_A0334M-04AR21. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA-334 in Section II of that Code. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.