ASTM A426-92(2002)
(Specification)Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service
Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service
SCOPE
1.1 This specification covers centrifugally cast alloy steel pipe intended for use in high-temperature, high-pressure service.
1.2 Several grades of ferritic steels are covered. Their compositions are given in Table 1.
1.3 Supplementary Requirements S1 through S12 are provided. The supplementary requirements provide for additional tests of an optional nature and when desired shall be so stated in the order (Section 4).
1.4 The values stated in inch-pound units are to be regarded as the standard.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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.
An American National Standard
Designation: A 426 – 92 (Reapproved 2002)
Standard Specification for
Centrifugally Cast Ferritic Alloy Steel Pipe for High-
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Temperature Service
This standard is issued under the fixed designation A 426; 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.
,
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1. Scope 12-in. (114 to 305-mm)) Steel Castings
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E 446 Reference Radiographs for Steel Castings Up to 2 in.
1.1 This specification covers centrifugally cast alloy steel
,
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(51 mm) in Thickness
pipe intended for use in high-temperature, high-pressure ser-
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E 709 Practice for Magnetic Particle Examination
vice.
2.2 ANSI Standard:
1.2 Several grades of ferritic steels are covered. Their
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B46.1 Surface Texture
compositions are given in Table 1.
2.3 ASME Boiler and Pressure Vessel Code:
1.3 Supplementary Requirements S1 through S12 are
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Section IX Welding Qualifications
provided. The supplementary requirements provide for addi-
tional tests of an optional nature and when desired shall be so
3. Ordering Information
stated in the order (Section 4).
3.1 Orders for material under this specification shall include
1.4 The values stated in inch-pound units are to be regarded
the following, as required, to describe the desired material
as the standard.
adequately:
2. Referenced Documents 3.1.1 Quantity (feet, centimetres, or number of lengths),
3.1.2 Name of material (centrifugally cast pipe),
2.1 ASTM Standards:
3.1.3 Specification number,
A 370 Test Methods and Definitions for Mechanical Testing
3
3.1.4 Grade (Table 1),
of Steel Products
3.1.5 Size (outside or inside diameter and minimum wall
A 530/A 530M Specification for General Requirements for
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thickness),
Specialized Carbon and Alloy Steel Pipe
3.1.6 Length (specific or random) (Section on Permissible
A 609/A 609M Practice for Castings, Carbon, Low-Alloy,
Variation in Length of Specification A 530/A 530M),
and Martensitic Stainless Steel, Ultrasonic Examination
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3.1.7 End finish (Section on Ends of Specification A 530/
Thereof
A 530M),
E 44 Definitions of Terms Relating to Heat Treatment of
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3.1.8 Optional Requirements S1 through S12 and Section
Metals
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14.1,
E 94 Guide for Radiographic Examination
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3.1.9 Test report required (Section on Certification of Speci-
E 165 Test Method for Liquid Penetrant Examination
1 fication A 530/A 530M),
E 186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-
5,6
3.1.10 Service temperature if over 1000°F (540°C) (Note 1),
in. (51 to 114-mm)) Steel Castings
and
E 208 Test Method for Conducting Drop-Weight Test to
3.1.11 Special requirements or additions to specification.
Determine Nil-Ductility Transition Temperature of Ferritic
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Steels
4. General Requirements for Delivery
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E 280 Reference Radiographs for Heavy-Walled (4 ⁄2 to
4.1 Material furnished under this specification shall con-
form to the applicable requirements of the current edition of
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Specification A 530/A 530M unless otherwise provided herein.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings. 5. Materials and Manufacture
Current edition approved July 15, 1992. Published September 1992. Originally
5.1 Heat-Treatment—The pipe shall be furnished in the
published A 426 – 58 T. Last previous edition A 426 – 91.
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normalized and tempered or liquid-quenched and tempered
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-426 in Section II of that Code.
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Annual Book of ASTM Standards, Vol 01.03.
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Annual Book of ASTM Standards, Vol 01.01. Available from American National Standards Institute, 25 W. 43rd St., 4th
5
Annual Book of ASTM Standards, Vol 01.02. Floor, New York, NY 10036.
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Annual Book of ASTM Standards, Vol 03.03. Available from American Society of Mechanical Engineers (ASME), Three
7
Annual Book of ASTM Standards, Vol 03.01. Park Ave., New York, NY 10016–5990.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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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 426
TABLE 1 Chemical Requirements
Composition, %
Phos-
Grade Carbon Manganese Sulfur, max Silicon Chromium Molybdenum
phorus, max
CP1 0.25 max 0.30–0.80 0.040 0.045 0.10–0.50 . . . 0.44–0.65
CP2 0.10–0.20 0.30–0.61 0.040 0.045 0.10–0.50 0.50–0.81 0.44–0.65
CP5 0.20 max 0.30–0.70 0.040 0.045 0.75 max 4.00–6.50
...
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