ASTM A426/A426M-05
(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 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 each other. Combining values from the two systems may result in nonconformance with the specification.
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Designation: A 426/A 426M – 05
Standard Specification for
Centrifugally Cast Ferritic Alloy Steel Pipe for High-
1
Temperature Service
ThisstandardisissuedunderthefixeddesignationA 426/A 426M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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* E 165 Test Method for Liquid Penetrant Examination
1
2 E 186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-
1.1 This specification covers centrifugally cast alloy steel
in. [51 to 114-mm]) Steel Castings
pipe intended for use in high-temperature, high-pressure ser-
E 208 Test Method for Conducting Drop-Weight Test to
vice.
Determine Nil-Ductility Transition Temperature of Ferritic
1.2 Several grades of ferritic steels are covered. Their
Steels
compositions are given in Table 1.
1
E 280 Reference Radiographs for Heavy-Walled (4 ⁄2 to
1.3 Supplementary Requirements S1 through S12 are
12-in. [114 to 305-mm]) Steel Castings
provided. The supplementary requirements provide for addi-
E 446 Reference Radiographs for Steel Castings Up to 2 in.
tional tests of an optional nature and when desired shall be so
[51 mm] in Thickness
stated in the order (Section 4).
E 709 Practice for Magnetic Particle Examination
1.4 The values stated in either inch-pound units or SI units
4
2.2 ANSI Standard:
are to be regarded separately as standard. Within the text, the
B46.1 Surface Texture
SI units are shown in brackets. The values stated in each
5
2.3 ASME Boiler and Pressure Vessel Code:
system are not exact equivalents; therefore, each system must
Section IX Welding Qualifications
be used independently of each other. Combining values from
the two systems may result in nonconformance with the
3. Ordering Information
specification.
3.1 Orders for material under this specification shall include
2. Referenced Documents the following, as required, to describe the desired material
3
adequately:
2.1 ASTM Standards:
3.1.1 Quantity (feet, centimetres, or number of lengths),
A 370 Test Methods and Definitions for MechanicalTesting
3.1.2 Name of material (centrifugally cast pipe),
of Steel Products
3.1.3 Specification number,
A 609/A 609M Practice for Castings, Carbon, Low-Alloy,
3.1.4 Grade (Table 1),
and Martensitic Stainless Steel, Ultrasonic Examination
3.1.5 Size (outside or inside diameter and minimum wall
Thereof
thickness),
A 941 Terminology Relating to Steel, Stainless Steel, Re-
3.1.6 Length (specific or random) (Section on Permissible
lated Alloys, and Ferroalloys
Variations in Length of Specification A 999/A 999M),
A 999/A 999M Specification for General Requirements for
3.1.7 End finish (Section on Ends of Specification A 999/
Alloy and Stainless Steel Pipe
A 999M),
E94 Guide for Radiographic Examination
3.1.8 Optional Requirements S1 through S12 and Section
14.1,
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
3.1.9 Test report required (Section on Certified Test Report
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
of Specification A 999/A 999M),
A01.18 on Castings.
3.1.10 Servicetemperatureifover1000°F[540°C](Note1),
Current edition approved September 15, 2005. Published October 2005. Origi-
and
nally approved in 1958. Last previous edition approved in 2002 asA 426/A 426M -
02.
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-426 in Section II of that Code.
3 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American National Standards Institute, 25 W. 43rd St., 4th
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Floor, New York, NY 10036.
5
Standards volume information, refer to the standard’s Document Summary page on Available from American Society of Mechanical Engineers (ASME), Three
the ASTM website. Park Ave., New York, NY 10016–5990.
*ASummary 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.
1
---------------------- Page: 1 ----------------------
A 426/A 426M – 05
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 0.45-0.65
CP5b 0.15 max 0.30-0.60 0.040 0.045 1.00-2.00 4.00-6.00 0.45-0.65
CP9 0.20 max 0.30-0.65 0.040 0.045 0.25-1.00 8.00-10.00 0.90-1.20
CP11 0.05–0.20 0.30-0.80 0.040 0.045 0.60 max 1.00-1.50 0.44-0.65
CP12 0.05–0.15 0.30-0
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A426/A 426M–02 Designation: A 426/A 426M – 05
Standard Specification for
Centrifugally Cast Ferritic Alloy Steel Pipe for High-
1
Temperature Service
ThisstandardisissuedunderthefixeddesignationA 426/A 426M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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*
2
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 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of each other. Combining values from the two systems may result in nonconformance with the specification.
2. Referenced Documents
3
2.1 ASTM Standards:
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products A530/A 530MSpecification for General
Requirements for Specialized Carbon and
Alloy Steel Pipe
A 609/A 609M Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
5
E44Definitions of Terms Relating to Heat Treatment of Metals A 999/A 999M Specification for General Requirements for
Alloy and Stainless Steel Pipe
E 94 Guide for Radiographic Examination
E 165 Test Method for Liquid Penetrant Examination
1
E 186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-in. [51 to 114-mm]) Steel Castings
E 208 Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels
1
E 280 Reference Radiographs for Heavy-Walled (4 ⁄2 to 12-in. [114 to 305-mm]) Steel Castings
E 446 Reference Radiographs for Steel Castings Up to 2 in. [51 mm] in Thickness
E 709 Practice for Magnetic Particle Examination
2.2 ANSI Standard:
4
B46.1Surface Texture ANSI Standard:
B46.1 Surface Texture
5
2.3 ASME Boiler and Pressure Vessel Code:
Section IX Welding Qualifications
3. Ordering Information
3.1 Orders for material under this specification shall include the following, as required, to describe the desired material
adequately:
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel, and RelatedAlloys and is the direct responsibility of SubcommitteeA01.18
on Castings.
Current edition approved September 10, 2002. Published October 2002. Originally published A426–58T. Last previous edition A426–92(2002).
Current edition approved September 15, 2005. Published October 2005. Originally approved in 1958. Last previous edition approved in 2002 as A 426/A 426M - 02.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-426 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol 01.03.volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Annual Book of ASTM Standards, Vol 01.01.
4
Available from American National Standards Institute, 25 W. 43rd St., 4th Floor, New York, NY 10036.
5
Annual Book of ASTM Standards, Vol 01.02.
5
Available from American Society of Mechanical Engineers (ASME), Three Park Ave., New York, NY 10016–5990.
*ASummary 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.
1
---------------------- Page: 1 ----------------------
A 426/A 426M – 05
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
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
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 0.45–0.65
CP5 0.20 m
...
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