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Abstract
This specification covers nominal-wall-thickness, seamless and welded austenitic steel tubing for general corrosion-resisting and low- or high-temperature service. All material shall be furnished in the heat-treated condition. The steel shall conform to the chemical composition requirements. Different mechanical test requirements that includes, flaring test, flange test, hardness test, and reverse flattening test are presented. Also, each tube shall be subjected to the non-destructive electric test or the hydrostatic test. Finally the hardness requirements for different grades of tubes are highlighted.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. Scope
1.1 This specification covers grades of nominal-wall-thickness, stainless steel tubing for general corrosion-resisting and low- or high-temperature service, as designated in Table 1.
Grade | Composition, % | ||||||||||||||
TP | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | |
UNS DesignationA | S24000 | S31254 | S31266 | S31725 | S31726 | S31727 | S32053 | S30600A | S32654 | S34565 | S35045 | N08367 | N08925 | N08926 | N08904 |
Carbon | 0.08 | 0.020 | 0.030 | 0.035 | 0.035 | 0.030 | 0.030 | 0.018 | 0.020 | 0.030 | 0.06– | 0.030 | 0.020 | 0.020 | 0.020 |
Manganese | 11.5– | 1.00 | 2.00–4.00 | 2.00 | 2.00 | 1.00 | 1.00 | 2.0 | 2.0– | 5.0– | 1.50 | 2.00 | 1.00 | 2.00 | 2.00 |
Phosphorus | 0.060 | 0.030 | 0.035 | 0.045 | 0.045 | 0.030 | 0.030 | 0.020 | 0.030 | 0.030 | 0.045 | 0.040 | 0.045 | 0.030 | 0.040 |
Sulfur. | 0.030 | 0.015 | 0.020 | 0.030 | 0.030 | 0.030 | 0.010 | 0.020 | 0.005 | 0.010 | 0.015 | 0.030 | 0.030 | 0.010 | 0.030 |
Silicon | 1.00 | 0.80 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 3.7–4.3 | 0.50 | 1.00 | 1.00 | 1.00 | 0.50 | 0.50 | 1.00 |
Nickel | 2.3– | 17.5– | 21.0–24.0 | 13.5– | 14.5– | 14.5– | 24.0– | 14.0– | 21.0– | 16.0– | 32.0– | 23.5– | 24.0–26.0 | 24.0– | 23.0– |
Chromium | 17.0– | 19.5– | 23.0–25.0 | 18.0– | 17.0– | 17.5– | 22.0– | 17.0– | 24.0– | 23.0– | 25.0– | 20.0– | 19.0–21.0 | 19.0– | 19.0– |
Molybdenum | ... | 6.0– | 5.2–6.2 | 4.0– | 4.0– | 3.8– | 5.0– | 0.20 | 7.0– | 4.0– |
| 6.0– | 6.0–7.0 | 6.0– | 4.0– |
Titanium | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | 0.15– | . . . | . . . | . . . | . . . |
Columbium | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | 0.10 | . . . | . . . | . . . | . . . | . . . |
Tantalum | . . . | . . . | . . . | . . . | . . . |
| . . . |
| . . . | . . . | . . . | . . . | . . . | . . . | . . . |
NitrogenF | 0.20– | 0.18– | 0.35–0.60 | 0.20 | 0.10– | 0.15– | 0.17– |
| 0.45– | 0.40– | . . . | 0.18– | 0.10–0.20 | 0.15– | 0.10 |
Vanadium | . . . |
|
| . . . | . . . |
| . . . |
| . . . |
| . . . | . . . | . . . | . . . | . . . |
Copper | . . . | 0.50– | 1.00–2.50 | . . . | . . . | 2.8– | . . . | 0.50 | 0.30– | . . . | 0.75 | 0.75 | 0.80–1.50 | 0.50– | 1.00– |
Others | . . . | . . . | W 1.50–2.50 | . . . | . . . | . . . | . . . | . . . | . . . | . . . | Al | . . . | . . . | . . . | . . . |
1.2 The tubing sizes and thicknesses usually furnished to this specification are 1/4 in. [6.4 mm] in inside diameter and larger and 0.020 in. [0.51 mm] in nominal wall-thickness and heavier.
1.3 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.38 mm] in thickness.
Note 1: Additional testing requirements may apply for use in ASME B31.3 applications.
1.4 Optional supplementary requirements are provided and, when one or more of these are desired, each shall be so stated in the order.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, 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 non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
1.6 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A632 Specification for Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
Other Standard
SAE J1086ASME Piping Code
ASME B31.3 Process Piping Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://www.asme.org.ICS Code
ICS Number Code 23.040.10 (Iron and steel pipes)
UNSPSC Code
UNSPSC Code 40182400(Seamless stainless steel tubes); 40181900(Welded stainless steel tubes)
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DOI: 10.1520/A0269_A0269M-15AR19
Citation Format
ASTM A269 / A269M-15a(2019), Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service, ASTM International, West Conshohocken, PA, 2019, www.astm.org
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