ASTM A660-96(2001)
(Specification)Standard Specification for Centrifugally Cast Carbon Steel Pipe for High-Temperature Service
Standard Specification for Centrifugally Cast Carbon Steel Pipe for High-Temperature Service
SCOPE
1.1 This specification covers carbon steel pipe made by the centrifugal casting process intended for use in high-temperature, high-pressure service. Pipe ordered under this specification shall be suitable for fusion welding, bending, and other forming operations.
1.2 Several grades of carbon steels are covered. Their compositions are given in Table 1.
1.3 Supplementary requirements (S1 to S9) of an optional nature are provided. The supplementary requirements call for additional tests to be made, and when desired shall be so stated in the order, together with the number of such tests required.
1.4 The values stated in inch-pound units are to be regarded as the standard.
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Designation: A 660 – 96 (Reapproved 2001)
Standard Specification for
Centrifugally Cast Carbon Steel Pipe for High-Temperature
Service
This standard is issued under the fixed designation A 660; 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.
TABLE 1 Chemical Requirements
1. Scope
Composition, max,%
1.1 This specification covers carbon steel pipe made by the
Grade WCA Grade WCB Grade WCC
centrifugal casting process intended for use in high-
A B
temperature, high-pressure service. Pipe ordered under this
Carbon 0.25 0.30 0.25
A B
Manganese 0.70 1.00 1.20
specification shall be suitable for fusion welding, bending, and
Phosphorus 0.035 0.035 0.035
other forming operations.
Sulfur 0.035 0.035 0.035
1.2 Several grades of carbon steels are covered. Their Silicon 0.60 0.60 0.60
A
compositions are given in Table 1.
Foreachreductionof0.01%belowthespecifiedmaximumcarboncontent,an
increase of 0.04 % manganese above the specified maximum will be permitted up
1.3 Supplementary requirements (S1 to S9) of an optional
to a maximum of 1.10 %.
nature are provided. The supplementary requirements call for
B
Foreachreductionof0.01%belowthespecifiedmaximumcarboncontent,an
additional tests to be made, and when desired shall be so stated increase of 0.04 % manganese above the specified maximum will be permitted to
a maximum of 1.40 %.
in the order, together with the number of such tests required.
1.4 The values stated in inch-pound units are to be regarded
as the standard.
B36.10 American Standard for Welded and Seamless
Wrought Steel Pipe
2. Referenced Documents
B46.1 Surface Texture
2.1 ASTM Standards:
2.3 MSS Standards:
A 530/A 530M Specification for General Requirements for
SP-54 Quality Standard for Steel Castings—Radiographic
Specialized Carbon and Alloy Steel Pipe
Inspection Method
E 94 Guide for Radiographic Testing
3. Ordering Information
E 114 Practice for Ultrasonic Pulse-Echo Straight-Beam
Examination by the Contact Method
3.1 Orders for material under this specification should
E 125 Reference Photographs for Magnetic Particle Indica-
include the following, as required, to describe the desired
tions on Ferrous Castings
material adequately:
E 142 Method for Controlling Quality of Radiographic
3.1.1 Quantity (feet, metres, or number of lengths),
Testing
3.1.2 Name of material (centrifugally cast pipe),
E 186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-
3.1.3 Grade (Table 1),
in. (51 to 114-mm)) Steel Castings
3.1.4 Size (outside or inside diameter and minimum wall
E 381 Method of Macroetch Testing Steel Bars, Billets,
thickness),
Blooms, and Forgings
3.1.5 Length (specific or random), (Permissible Variations
E 446 Reference Radiographs for Steel Castings up to 2 in.
in Length Section of Specification A 530/A 530M),
(51 mm) in Thickness
3.1.6 End finish (Ends Section of Specification A 530/
2.2 ANSI Standards:
A 530M),
3.1.7 Optional Requirements (Sections 7.2, 8.2, 8.3, 11.1,
Section 12 and S1 to S9 (Supplementary Requirements),
3.1.8 Test report required (Certification Section of Specifi-
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys, and is the direct responsibility of Subcommittee cation A 530/A 530M),
A01.09 on Carbon Steel Tubular Products.
3.1.9 Specification designation, and
Current edition approved Oct. 10, 1996. Published October 1997. Originally
published as A 660 – 72. Last previous edition A 660 – 91a.
For ASME Boiler and Vessel Code applications see related Specification
SA-660 in Section II of that Code. Available from American National Standards Institute, 11 West 42nd St., 13th
Annual Book of ASTM Standards, Vol 01.01. Floor, New York, NY 10036.
4 7
Annual Book of ASTM Standards, Vol 03.03. Available from the Manufacturers’ Standardization Society of the Valve and
Annual Book of ASTM Standards, Vol 03.01. Fittings Industry, 1815 N. Fort Myer Drive, Arlington, VA 22209.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 660 – 96 (2001)
3.1.10 Special requirements. 8.2.1 Aflattening test shall be performed when requested by
the purchaser or when stated by the purchaser on the order that
4. General Requirements
the pipe is to be upset, swaged, expanded, bent, or formed by
some other operation.
4.1 Material furnished under this specification shall con-
8.2.2 Aflattening test need not be performed on heavy wall
form to the applicable requirements of the current edition of
pipe which is not to be upset, swaged, expanded, bent, or
SpecificationA 530/A 530M unless otherwise provided herein.
formed in some other manner.
5. Materials and Manufacture 8.2.3 When required by 8.2, a test shall be made on
specimens cut from one end of each length of pipe.
5.1 Machining:
8.2.4 A flattening test when required shall be performed in
5.1.1 All centrifugally cast pipe shall have both the inner
accordance with the requirements for seamless and centrifu-
and outer surfaces machined.
gally cast pipe in the Flattening Test Requirements Section of
5.1.2 After heat treatment, the pipe shall be machined to a
Specification A 530/A 530M.
finish with a roughness value no greater than 250 µin. (6.35
µm) arithmetical average deviation (AA), terms as defined in
NOTE 1—In heavy-walled small-diameter tubing the flattening test
ANSI B46.1 unless otherwise specified. specimenmaybeboredoutsothattheOD/tratiowillbegreaterthan11.0.
5.2 Heat Treatment:
8.3 Hydrostatic Test:
5.2.1 All pipe shall receive a heat treatment proper for its
8.3.1 Each length of pipe shall be hydrostatically tested in
design and chemical composition.
accordance with the Hydrostatic Test Requirements Section of
5.2.2 Castings shall be heat treated after they have been
Specification A 530/A 530M when requested by the purchaser
allowed to cool below the transformation range.
and stated on the order. If performance of the hydrostatic test
is not required by the purchaser, the manufacturer shall
6. Temperature Control
guarantee pipe to pass the test and mark each length of pipe
6.1 Furnace temperatures for heat treating shall be effec-
with the letters “NH” immediately following the specification
tively controlled by pyrometers.
number, indicating that the pipe has not been hydrostatically
tested.
7. Chemical Requirements
8.3.2 When required by 8.3, each length of pipe shall be
7.1 The steel shall conform to the requirements as to
subjected to the hydrostatic test. The test pressure shall be
chemical composition prescribed in Table 1.
maintained for not less than 5 min.
7.2 Product Analysis:
9. Permissible Variation in Wall Thickness
7.2.1 At the request of the purchaser, a product analysis
shall be made by the manufacturer on every heat.
9.1 The wall thickness shall not vary over the specified
7.2.2 The results of these analyses shall be reported to the
minimum wall thickness by more than 10 %. There shall be no
purchaser or his representative, and shall conform to the
variation under the specified minimum wall thickness.
requirements specified in Table 1.
NOTE 2—A system of standard pipe sizes has been approved by the
7.2.3 If the analysis of one of the tests specified in 7.2.1
American National Standards Institute, asANSI B36.10.This system may
does not conform to the requirements specified, an analysis of
be used for obtaining pipe under this specification.
each pipe from the same heat may be made, and all pipes
conforming to the requirements shall be accepted. 10. Workmanship and Finish
10.1 The pipe shall have a finish as provided in 5.2 and it
8. Mechanical Requirements
shall be reasonably straight and free from injurious defects.
8.1 Tensile Properties:
11. Rework and Retreatment
8.1.1 The material shall conform to the requirements as to
tensile properties prescribed in Table 2.
11.1 Imperfections—The surface of the casting shall be
8.1.2 Transverse or Longitudinal Tension Test—One test
inspectedvisuallyforcracksandhottears.Theseimperfections
shall be made on a specimen from one end of one length of
shall be removed, and their removal verified
...
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.
An American National Standard Designation: A 660 – 96 (Reapproved 2001)
Designation:A 660–96
Standard Specification for
Centrifugally Cast Carbon Steel Pipe for High-Temperature
Service
This standard is issued under the fixed designation A 660; 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
1.1 This specification covers carbon steel pipe made by the centrifugal casting process intended for use in high-temperature,
high-pressure service. Pipe ordered under this specification shall be suitable for fusion welding, bending, and other forming
operations.
1.2 Several grades of carbon steels are covered. Their compositions are given in Table 1.
1.3 Supplementary requirements (S1 to S9) of an optional nature are provided. The supplementary requirements call for
additional tests to be made, and when desired shall be so stated in the order, together with the number of such tests required.
1.4 The values stated in inch-pound units are to be regarded as the standard.
2. Referenced Documents
2.1 ASTM Standards:
A 530/A 530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
E 94 Guide for Radiographic Testing
E 114 Practice for Ultrasonic Pulse-Echo Straight-Beam Examination by the Contact Method
E 125 Reference Photographs for Magnetic Particle Indications on Ferrous Castings
E 142 Method for Controlling Quality of Radiographic Testing
E 186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-in. (51 to 114-mm)) Steel Castings
E 381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E 446 Reference Radiographs for Steel Castings up to 2 in. (51 mm) in Thickness
2.2 ANSI Standards:
B36.10 American Standard for Welded and Seamless Wrought Steel Pipe
B46.1Surface Texture
B46.1 Surface Texture
2.3 MSS Standards:
SP-54 Quality Standard for Steel Castings—Radiographic Inspection Method
3. Ordering Information
3.1 Orders for material under this specification should include the following, as required, to describe the desired material
adequately:
3.1.1 Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (centrifugally cast pipe),
3.1.3 Grade (Table 1),
3.1.4 Size (outside or inside diameter and minimum wall thickness),
3.1.5 Length (specific or random), (Permissible Variations in Length Section of Specification A 530/A 530M/A530M),),
3.1.6 End finish (Ends Section of Specification A 530/A 530M/A530M), ),
3.1.7 Optional Requirements (Sections 7.2, 8.2, 8.3, 11.1, Section 12 and S1 to S9 (Supplementary Requirements),
This specification is under the jurisdiction of ASTM Committee A-1A01 on Steel, Stainless Steel, and Related Alloys, and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
Current edition approved Oct. 10, 1996. Published October 1997. Originally published as A 660 – 72. Last previous edition A 660 – 91a.
For ASME Boiler and Vessel Code applications see related Specification SA-660 in Section II of that Code.
Annual Book of ASTM Standards, Vol 01.01.
Annual Book of ASTM Standards, Vol 03.03.
Annual Book of ASTM Standards, Vol 03.01.
Available from American National Standards Institute, 11 West 42nd St., 13th Floor, New York, NY 10036.
Available from the Manufacturers’ Standardization Society of the Valve and Fittings Industry, 1815 N. Fort Myer Drive, Arlington, VA 22209.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 660 – 96 (2001)
TABLE 1 Chemical Requirements
Composition, max,%
Grade WCA Grade WCB Grade WCC
A B
Carbon 0.25 0.30 0.25
A B
Carbon 0.25 0.30 0.25
A B
Manganese 0.70 1.00 1.20
A B
Manganese 0.70 1.00 1.20
Phosphorus 0.035 0.035 0.035
Phosphorus 0.035 0.035 0.035
Sulfur 0.035 0.035 0.035
Sulfur 0.035 0.035 0.035
Silicon 0.60 0.60 0.60
Silicon 0.60 0.60 0.60
A
For each reduction of 0.01 % below the specified maximum carbon content,
an increase of 0.04 % manganese above the specified maximum will be permitted
up to a maximum of 1.10 %.
B
For each reduction of 0.01 % below the specified maximum carbon content,
an increase of 0.04 % manganese above the specified maximum will be permitted
to a maximum of 1.40 %.
3.1.8 Test report required (Certification Section of Specification A 530/A 530M/A530M), ),
3.1.9 Specification designation, and
3.1.10 Special requirements.
4. General Requirements
4.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of
Specification A 530/A 530M/A530M unless otherwise provided herein.
5. Materials and Manufacture
5.1 Machining:
5.1.1 All centrifugally cast pipe shall have both the inner and outer surfaces machined.
5.1.2 After heat treatment, the pipe shall be machined to a finish with a roughness value no greater than 250 µin. (6.35 µm)
arithmetical average deviation (AA), terms as defined in ANSI B46.1 unless otherwise specified.
5.2 Heat Treatment:
5.2.1 All pipe shall receive a heat treatment proper for its design and chemical composition.
5.2.2 Castings shall be heat treated after they have been allowed to cool below the transformation range.
6. Temperature Control
6.1 Furnace temperatures for heat treating shall be effectively controlled by pyrometers.
7. Chemical Requirements
7.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 1.
7.2 Product Analysis:
7.2.1 At the request of the purchaser, a product analysis shall be made by the manufacturer on every heat.
7.2.2 Theresultsoftheseanalysesshallbereportedtothepurchaserorhisrepresentative,andshallconformtotherequirements
specified in Table 1.
7.2.3 If the analysis of one of the tests specified in 7.2.1 does not conform to the requirements specified, an analysis of each
pipe from the same heat may be made, and all pipes conforming to the requirements shall be accepted.
8. Mechanical Requirements
8.1 Tensile Properties:
8.1.1 The material shall conform to the requirements as to tensile properties prescribed in Table 2.
8.1.2 Transverse or Longitudinal Tension Test—One test shall be made on a specimen from one end of one length of pipe
representing each heat in each heat-treatment lot.
8.2 Flattening Test:
8.2.1 A flattening test shall be performed when requested by the purchaser or when stated by the purchaser on the order that
the pipe is to be upset, swaged, expanded, bent, or formed by some other operation.
8.2.2 A flattening test need not be performed on heavy wall pipe which is not to be upset, swaged, expanded, bent, or formed
in some other manner.
8.2.3 When required by 8.2, a test shall be made on specimens cut from one end of each length of pipe.
8.2.4 Aflattening test when required shall be performed in accordance with the requirements for seamless and centrifugally cast
pipe in the Flattening Test Requirements Section of Specification A 530/A 530M/A530M. .
A 660 – 96 (2001)
TABLE 2 Tensile Requirements
WCA WCB WCC
ksi MPa ksi MPa ksi MPa
Tensile strength, min 60 414 70 483 70 483
Yield strength, min 30 207 36 248 40 276
Elongation in 2 in. or 50 24 22 22
mm, min, %
Reduction of area, min, 35 35 35
%
NOTE 1—In heavy-walled small-diameter tubing the flattening test specimen may be bored out so that the OD/t ratio will be greater than 11.0.
8.3 Hydrostatic Test:
8.3.1 Each length of pipe shall be hydrostatically tested in accordance with the Hydrostatic Test Requirements Section of
Specification A 530/A 530M/A530M when requested by the purchaser and stated on the order. If performance of the hydrostatic
test is not required by the purchaser, the manufacturer shall guarantee pipe to pass the test and mark each length of pipe with the
letters “NH” immediately following the specification number, indicating that the pipe has not been hydrostatically tested.
8.3.2 When required by 8.3, each length of pipe shall be subjected to the hydrostatic test. The test pressure shall be maintained
for not less than 5 min.
9. Permissible Variation in Wall Thickness
9.1 The wall thickness shall not vary over the specified minimum
...
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