ASTM A953-96

Standard Specification for Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless and Welded Tubing

SCOPE
1.1 This specification covers grades of nominal-wall-thickness, austenitic alloy steel tubing for general corrosion-resisting and low- or high-temperature service, having a specified minimum chromium content of less than 10.50%.  
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.  
1.4 Some steels covered by this specification, especially the high silicon containing steels, because of their particular alloy content and specialized properties, may require special care in their fabrication and welding. Specific procedures are of fundamental importance, and it is presupposed that all parameters will be in accordance with approved methods capable of producing the desired properties in the finished fabrication.  
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. 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. Unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished in inch-pound units.

General Information

• Status: Historical
• Publication Date: 31-Dec-1995
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.10 - Stainless and Alloy Steel Tubular Products

Relations

• Replaced By: ASTM A953-02 - Standard Specification for Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless and Welded Tubing (Withdrawn 2005)
• Effective Date: 10-Sep-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: A 953 – 96 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless
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and Welded Tubing
This standard is issued under the fixed designation A 953; 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 Stainless Steel Tubing (Small-Diameter) for General Ser-
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vice
1.1 This specification covers grades of nominal-wall-
2.2 ANSI Standard:
thickness, austenitic alloy steel tubing for general corrosion-
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B 31.3 Chemical Plant and Petroleum Refinery Piping
resisting and low- or high-temperature service, having a
2.3 ASME Pressure Vessel Code:
specified minimum chromium content of less than 10.50 %.
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Section VIII Division 1, Pressure Vessels
1.2 The tubing sizes and thicknesses usually furnished to
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this specification are ⁄4 in. (6.4 mm) in inside diameter and
3. Ordering Information
larger and 0.020 in. (0.51 mm) in nominal wall-thickness and
3.1 Orders for material under this specification should
heavier.
include the following, as required, to describe the desired
1.3 Mechanical property requirements do not apply to
1
material adequately:
tubing smaller than ⁄8 in. (3.2 mm) in inside diameter or 0.015
3.1.1 Quantity (feet, metres, or number of lengths),
in. (0.38 mm) in thickness.
3.1.2 Name of material (seamless or welded tubes),
1.4 Some steels covered by this specification, especially the
3.1.3 Grade (Table 1),
high silicon containing steels, because of their particular alloy
3.1.4 Size (outside diameter and nominal wall thickness),
content and specialized properties, may require special care in
3.1.5 Length (specific or random),
their fabrication and welding. Specific procedures are of
3.1.6 Test report required (see Section on Inspection of
fundamental importance, and it is presupposed that all param-
Specification A 450/A 450M),
eters will be in accordance with approved methods capable of
3.1.7 Specification designation, and
producing the desired properties in the finished fabrication.
3.1.8 Special requirements.
1.5 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. The values stated in
4. General Requirements
each system are not exact equivalents; therefore, each system
must be used independently of the other. Combining values 4.1 Material furnished under this specification shall con-
from the two systems may result in nonconformance with the form to the applicable requirements of the current edition of
specification. Unless the order specifies the applicable “M” Specification A 450/A 450M, unless otherwise provided
specification designation (SI units), the material shall be herein.
furnished in inch-pound units.
5. Manufacture
2. Referenced Documents
5.1 The tubes shall be made by the seamless or welded
2.1 ASTM Standards:
process.
A 370 Test Methods and Definitions for Mechanical Testing
5.2 At the manufacturer’s option, tubing may be furnished
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of Steel Products
either hot finished or cold finished.
A 450/A450M Specification for General Requirements for
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Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
6. Heat Treatment
A 480/A480M Specification for General Requirements for
6.1 All material shall be furnished in the heat-treated
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
condition. Except as provided in 6.2, the heat-treatment pro-
2
Sheet, and Strip
cedure shall, consist of heating the material to a minimum
A 632 Specification for Seamless and Welded Austenitic
temperature of 1900°F (1040°C) and quenching in water or
rapidly cooling by other means.
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This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
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A01.10 on Steel Tubing. Available from American National Standards Institute, W. 42nd St., 11th Floor,
Current edition approved March 10, 1996. Published May 1996. New York, NY 10036.
2 5
Annual Book of ASTM Standards, Vol 01.03. Available from American Society for Mechanical Engineers, 345 E. 47th St.,
3
Annual Book of ASTM Standards, Vol 01.01. New York, NY 10017.
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NOTICE:¬This¬standard¬has¬either¬been¬superseded¬and¬replaced¬by¬a¬new¬version¬or
discontinued.¬Contact¬ASTM¬International¬(www.astm.org)¬for¬the¬latest¬information.¬
A 953
TABLE 1 Chemical Requirements TABLE 2 Number of Tubes in a Lot Heat Treated by the
Continuous Process
Grade
S70003
Si
...