ASTM A571/A571M-01(2019)
(Specification)Standard Specification for Austenitic Ductile Iron Castings for Pressure-Containing Parts Suitable for Low-Temperature Service
Standard Specification for Austenitic Ductile Iron Castings for Pressure-Containing Parts Suitable for Low-Temperature Service
ABSTRACT
This specification covers austenitic ductile iron castings for compressors, expanders, pumps, valves, and other pressure-containing parts intended primarily for low-temperature service. The castings covered here are Type D-2M, Class 1, Class 2, Class 3, and Class 4. The castings shall be made in the electric-arc furnace, induction furnace, cupola, or any other furnace which is capable of producing castings. Heat and product analyses shall be performed wherein specimens shall conform to required chemical composition of carbon, silicon, manganese, nickel, chromium, and phosphorus. The castings shall undergo tension tests and impact tests, and shall conform to the following mechanical requirements: tensile strength, yield strength, elongation, Brinell hardness, and Charpy V-notch.
SCOPE
1.1 This specification2 covers austenitic ductile iron, Type D-2M, Classes 1 and 2, for compressors, expanders, pumps, valves, and other pressure-containing parts intended primarily for low-temperature service.
1.2 These grades of austenitic ductile iron are characterized by having their graphite substantially in a spheroidal form and free of flake graphite. They are essentially free of carbides and contain sufficient alloy content to produce a stable austenitic matrix down to −423 °F [−252 °C] (liquid hydrogen).
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 nonconformance with the standard.
1.3.1 Within the text, the SI units are shown in brackets.
1.4 The following precautionary caveat pertains only to the test methods portion, Section 11, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
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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.
Designation: A571/A571M −01 (Reapproved 2019)
Standard Specification for
Austenitic Ductile Iron Castings for Pressure-Containing
1
Parts Suitable for Low-Temperature Service
This standard is issued under the fixed designationA571/A571M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
3
2
2.1 ASTM Standards:
1.1 This specification covers austenitic ductile iron, Type
A941TerminologyRelatingtoSteel,StainlessSteel,Related
D-2M, Classes 1 and 2, for compressors, expanders, pumps,
Alloys, and Ferroalloys
valves, and other pressure-containing parts intended primarily
E8/E8MTest Methods for Tension Testing of Metallic Ma-
for low-temperature service.
terials
1.2 These grades of austenitic ductile iron are characterized
E23Test Methods for Notched Bar Impact Testing of Me-
by having their graphite substantially in a spheroidal form and
tallic Materials
free of flake graphite.They are essentially free of carbides and
E30TestMethodsforChemicalAnalysisofSteel,CastIron,
contain sufficient alloy content to produce a stable austenitic
4
Open-Hearth Iron, and Wrought Iron (Withdrawn 1995)
matrix down to −423°F [−252°C] (liquid hydrogen).
E59Practice for Sampling Steel and Iron for Determination
4
1.3 The values stated in either SI units or inch-pound units
of Chemical Composition (Withdrawn 1996)
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
3. Ordering Information
system shall be used independently of the other. Combining
3.1 Ordersformaterialunderthisspecificationshallinclude
values from the two systems may result in nonconformance
the following information:
with the standard.
3.1.1 Quantity (weight or number of pieces),
1.3.1 Within the text, the SI units are shown in brackets.
3.1.2 ASTM designation and year of issue,
1.4 The following precautionary caveat pertains only to the 3.1.3 Material class (Table 1),
test methods portion, Section 11, of this specification: This
3.1.4 Impact test temperature requirement (Section 11),
standarddoesnotpurporttoaddressallofthesafetyconcerns, 3.1.5 Place of inspection (Section 13), and
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
3.1.6 Certification requirements (Section 14).
of this standard to establish appropriate safety, health, and
environmental practices and determine the applicability of
4. Materials and Manufacture
regulatory limitations prior to use.
4.1 Material—The iron shall be made in the electric-arc
1.5 This international standard was developed in accor-
furnace, induction furnace, cupola, or any other furnace which
dance with internationally recognized principles on standard-
is capable of producing castings meeting the chemical compo-
ization established in the Decision on Principles for the
sitions and mechanical properties in this specification.
Development of International Standards, Guides and Recom-
4.2 Heat Treatment:
mendations issued by the World Trade Organization Technical
4.2.1 All castings shall be heat treated.
Barriers to Trade (TBT) Committee.
4.2.2 Heat treatment shall be performed before machining
except in instances when reheat treating is necessary.
1
This specification is under the jurisdiction of the ASTM Committee A04 on
Iron Castings and is the direct responsibility of Subcommittee A04.02 on Malleable
3
and Ductile Iron Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2019. Published November 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1966. Last previous edition approved in 2015 as A571/ Standards volume information, refer to the standard’s Document Summary page on
A571M–01(2015). DOI: 10.1520/A0571_A0571M-01R19. the ASTM website.
2 4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- The last approved version of this historical standard is referenced on
cation SA-571 in Section II of that code. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A571/A571M − 01 (2019)
A
TABLE 1 Mechanical Property Requirements
Class 1 Class 2 Class 3 Class 4
Tensile Strength, min, ksi [mPa] 65 60 [450] [415]
B
Yield Strength 0.2 % (offset), min, ksi [mPa] 30 25 [205] [170]
Elongation, min, % 30 25 30 25
...
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: A571/A571M − 01 (Reapproved 2019)
Standard Specification for
Austenitic Ductile Iron Castings for Pressure-Containing
1
Parts Suitable for Low-Temperature Service
This standard is issued under the fixed designation A571/A571M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2 3
1.1 This specification covers austenitic ductile iron, Type 2.1 ASTM Standards:
D-2M, Classes 1 and 2, for compressors, expanders, pumps, A941 Terminology Relating to Steel, Stainless Steel, Related
valves, and other pressure-containing parts intended primarily Alloys, and Ferroalloys
for low-temperature service. E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
1.2 These grades of austenitic ductile iron are characterized
E23 Test Methods for Notched Bar Impact Testing of Me-
by having their graphite substantially in a spheroidal form and
tallic Materials
free of flake graphite. They are essentially free of carbides and
E30 Test Methods for Chemical Analysis of Steel, Cast Iron,
contain sufficient alloy content to produce a stable austenitic
4
Open-Hearth Iron, and Wrought Iron (Withdrawn 1995)
matrix down to −423 °F [−252 °C] (liquid hydrogen).
E59 Practice for Sampling Steel and Iron for Determination
4
1.3 The values stated in either SI units or inch-pound units
of Chemical Composition (Withdrawn 1996)
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each 3. Ordering Information
system shall be used independently of the other. Combining
3.1 Orders for material under this specification shall include
values from the two systems may result in nonconformance
the following information:
with the standard.
3.1.1 Quantity (weight or number of pieces),
1.3.1 Within the text, the SI units are shown in brackets.
3.1.2 ASTM designation and year of issue,
1.4 The following precautionary caveat pertains only to the
3.1.3 Material class (Table 1),
test methods portion, Section 11, of this specification: This
3.1.4 Impact test temperature requirement (Section 11),
standard does not purport to address all of the safety concerns,
3.1.5 Place of inspection (Section 13), and
if any, associated with its use. It is the responsibility of the user
3.1.6 Certification requirements (Section 14).
of this standard to establish appropriate safety, health, and
4. Materials and Manufacture
environmental practices and determine the applicability of
regulatory limitations prior to use.
4.1 Material—The iron shall be made in the electric-arc
1.5 This international standard was developed in accor-
furnace, induction furnace, cupola, or any other furnace which
dance with internationally recognized principles on standard-
is capable of producing castings meeting the chemical compo-
ization established in the Decision on Principles for the
sitions and mechanical properties in this specification.
Development of International Standards, Guides and Recom-
4.2 Heat Treatment:
mendations issued by the World Trade Organization Technical
4.2.1 All castings shall be heat treated.
Barriers to Trade (TBT) Committee.
4.2.2 Heat treatment shall be performed before machining
except in instances when reheat treating is necessary.
1
This specification is under the jurisdiction of the ASTM Committee A04 on
Iron Castings and is the direct responsibility of Subcommittee A04.02 on Malleable
3
and Ductile Iron Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2019. Published November 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1966. Last previous edition approved in 2015 as A571/ Standards volume information, refer to the standard’s Document Summary page on
A571M – 01 (2015). DOI: 10.1520/A0571_A0571M-01R19. the ASTM website.
2 4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- The last approved version of this historical standard is referenced on
cation SA-571 in Section II of that code. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A571/A571M − 01 (2019)
A
TABLE 1 Mechanical Property Requirements
Class 1 Class 2 Class 3 Class 4
Tensile Strength, min, ksi [mPa] 65 60 [450] [415]
B
Yield Strength 0.2 % (offset), min, ksi [mPa] 30 25 [205] [170]
Elongation, min, % 30 25 30 25
Brinell Hardness, 3000 kg [kgf] 121–171 111–171 121–171 111–171
Charpy V-notch, ft·lbf [
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: A571/A571M − 01 (Reapproved 2015) A571/A571M − 01 (Reapproved 2019)
Standard Specification for
Austenitic Ductile Iron Castings for Pressure-Containing
1
Parts Suitable for Low-Temperature Service
This standard is issued under the fixed designation A571/A571M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
2
1.1 This specification covers austenitic ductile iron, Type D-2M, Classes 1 and 2, for compressors, expanders, pumps, valves,
and other pressure-containing parts intended primarily for low-temperature service.
1.2 These grades of austenitic ductile iron are characterized by having their graphite substantially in a spheroidal form and free
of flake graphite. They are essentially free of carbides and contain sufficient alloy content to produce a stable austenitic matrix
down to −423°F [−252°C]−423 °F [−252 °C] (liquid hydrogen).
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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-conformancenonconformance with the standard.
1.3.1 Within the text, the SI units are shown in brackets.
1.4 The following precautionary caveat pertains only to the test methods portion, Section 11, of this specification: This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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
3
2.1 ASTM Standards:
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E8E8/E8M Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
E23 Test Methods for Notched Bar Impact Testing of Metallic Materials
4
E30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron (Withdrawn 1995)
4
E59 Practice for Sampling Steel and Iron for Determination of Chemical Composition (Withdrawn 1996)
3. Ordering Information
3.1 Orders for material under this specification shall include the following information:
3.1.1 Quantity (weight or number of pieces),
3.1.2 ASTM designation and year of issue,
3.1.3 Material class (Table 1),
3.1.4 Impact test temperature requirement (Section 11),
3.1.5 Place of inspection (Section 13), and
3.1.6 Certification requirements (Section 14).
1
This specification is under the jurisdiction of the ASTM Committee A04 on Iron Castings and is the direct responsibility of Subcommittee A04.02 on Malleable and
Ductile Iron Castings.
Current edition approved Nov. 1, 2015Nov. 1, 2019. Published November 2015November 2019. Originally approved in 1966. Last previous edition approved in 20112015
as A571/A571M – 01 (2011).(2015). DOI: 10.1520/A0571_A0571M-01R15. 10.1520/A0571_A0571M-01R19.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-571 in Section II of that code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A571/A571M − 01 (2019)
A
TABLE 1 Mechanical Property Requirements
Class 1 Class 2 Class 3 Class 4
Tensile Strength, min, ksi [mPa] 65 60 [450] [415]
B
Yield Strength 0.2 % (offset), min, ksi [mPa] 30 25 [205] [170]
Elongation, min, % 30 25 30 25
Brinell Hardness, 3000 kg [kgf] 121–171 111–171 121–171 111–171
Charpy V-notch, ft·lbf [J]
min, average 3
...
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