ASTM A128/A128M-19
(Specification)Standard Specification for Steel Castings, Austenitic Manganese
Standard Specification for Steel Castings, Austenitic Manganese
ABSTRACT
This specification covers Hadfield austenitic manganese steel castings and alloy modifications. The castings shall be suitably heat treated to achieve toughness and ductility. This heat treatment shall consist of uniformly heating the castings to a temperature applicable for grade of steel produced. The steel shall conform to the requirements as to chemical composition prescribed. Weld repairs shall be inspected to the same quality standards as are used to inspect the castings.
SCOPE
1.1 This specification covers Hadfield austenitic manganese steel castings and alloy modifications.
1.2 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 the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 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:A128/A128M −19
Standard Specification for
1
Steel Castings, Austenitic Manganese
This standard is issued under the fixed designationA128/A128M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* of this specification and Specification A781/A781M, this
specification shall prevail.
1.1 This specification covers Hadfield austenitic manganese
steel castings and alloy modifications.
4. Ordering Information
1.2 The values stated in either inch-pound units or SI units
4.1 Orders for material under this specification should
are to be regarded separately as standard. Within the text, the
include the following information in proper sequence:
SI units are shown in brackets. The values stated in each
4.1.1 Quantity,
system are not exact equivalents; therefore, each system must
4.1.2 Specification, grade,
be used independently of the other. Combining values from the
4.1.3 Whetheranyportionofthecastingistobechilled,and
two systems may result in nonconformance with the specifi-
whether this is to be spot or full-face chilling,
cation.
4.1.4 Special heat treatment requirements, and
1.3 This international standard was developed in accor- 4.1.5 Supplementary requirements.
dance with internationally recognized principles on standard-
5. Heat Treatment
ization established in the Decision on Principles for the
5.1 The castings shall be suitably heat treated to achieve
Development of International Standards, Guides and Recom-
toughness and ductility. This heat treatment shall consist of
mendations issued by the World Trade Organization Technical
uniformly heating the castings to a temperature applicable for
Barriers to Trade (TBT) Committee.
grade of steel produced, at least 1800 °F [1000 °C], and
2. Referenced Documents
holding until the temperature is uniform throughout and
2
quenching in an applicable medium, normally water.
2.1 ASTM Standards:
A781/A781M Specification for Castings, Steel and Alloy,
5.2 By agreement between the purchaser and the
Common Requirements, for General Industrial Use
manufacturer, castings may be furnished in a condition other
than described in 5.1.
3. General Conditions for Delivery
6. Chemical Composition
3.1 Material furnished to this specification shall conform to
the requirements of Specification A781/A781M, including any
6.1 The steel shall conform to the requirements as to
supplementary requirements that are indicated in the purchase
chemical composition prescribed in Table 1.
order. Failure to comply with the general requirements of
7. Repair by Welding
Specification A781/A781M constitutes nonconformance with
this specification. In case of conflict between the requirements
7.1 Defects shall be welded using a procedure and welders
capable of producing sound welds. The weld deposit shall be
1 austenitic steel in general, but welds on wearing surfaces shall
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee consist of austenitic manganese steel.
A01.18 on Castings.
7.2 Weld repairs shall be inspected to the same quality
Current edition approved May 1, 2019. Published May 2019. Originally
approved in 1930. Last previous edition approved in 2017 as A128/A128M – 93 standards as are used to inspect the castings.
(2017). DOI: 10.1520/A0128_A0128M-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 8. Keywords
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
8.1 austenitic manganese steel; manganese steel; steel
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. castings
*A Summary 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 ----------------------
A128/A128M−19
TABLE 1 Chemical Requirements
Composition, %
A
Grade
Carbon Manganese Chromium Molybdenum Nickel Silicon Phosphorus
B
A 1.05–1.35 11.0 min . . . 1.00 max 0.07 max
B-1 0.9–1.05 11.5–14.0 . . . 1.00 max 0.07 max
B-2 1.05–1.2 11.5–14.0 . . . 1.00 max 0.07 max
B-3 1.12–1.28 11.5–14.0 . . . 1.00 max 0.07 max
B-4 1.2–1.35 11.5–14.0 . . . 1.00 max 0.07 max
C 1.05–1.35 11.5–14.0 1.5–2.5 . . 1.00 max 0.07
...
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: A128/A128M − 93 (Reapproved 2017) A128/A128M − 19
Standard Specification for
1
Steel Castings, Austenitic Manganese
This standard is issued under the fixed designation A128/A128M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This specification covers Hadfield austenitic manganese steel castings and alloy modifications.
1.2 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 the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 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
2
2.1 ASTM Standards:
A781/A781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
3. General Conditions for Delivery
3.1 Material furnished to this specification shall conform to the requirements of Specification A781/A781M, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A781/A781M constitutes nonconformance with this specification. In case of conflict between the requirements of this
specification and Specification A781/A781M, this specification shall prevail.
4. Ordering Information
4.1 Orders for material under this specification should include the following information in proper sequence. sequence:
4.1.1 Quantity,
4.1.2 Specification, grade,
4.1.3 Whether any portion of the casting is to be chilled, and whether this is to be spot or full-face chilling,
4.1.4 Special heat-treatment heat treatment requirements, and
4.1.5 Supplementary requirements.
5. Heat Treatment
5.1 The castings shall be suitably heat treated to achieve toughness and ductility. This heat treatment shall consist of uniformly
heating the castings to a temperature applicable for grade of steel produced, at least 1800 °F [1000 °C], and holding until the
temperature is uniform throughout and quenching in an applicable medium, normally water.
5.2 By agreement between the purchaser and the manufacturer, castings may be furnished in a condition other than described
in 5.1.
6. Chemical Composition
6.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 1.
1
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.
Current edition approved March 15, 2017May 1, 2019. Published March 2017May 2019. Originally approved in 1930. Last previous edition approved in 20122017 as
A128/A128M – 93 (2012).(2017). DOI: 10.1520/A0128_A0128M-93R17. 10.1520/A0128_A0128M-19.
2
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.
*A Summary 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 ----------------------
A128/A128M − 19
TABLE 1 Chemical Requirements
Composition, %
A
Grade
Carbon Manganese Chromium Molybdenum Nickel Silicon Phosphorus
B
A 1.05–1.35 11.0 min . . . 1.00 max 0.07 max
B-1 0.9 –1.05 11.5–14.0 . . . 1.00 max 0.07 max
B-1 0.9–1.05 11.5–14.0 . . . 1.00 max 0.07 max
B-2 1.05–1.2 11.5–14.0 . . . 1.00 max 0.07 max
B-3 1.12–1.28 11.5–14.0 . . . 1.00 max 0.07 max
B-4 1.2 –1.35 11.5–14.0 . . . 1.00 max 0.07 max
B-4 1.2–1.35 11.5–14.0 . . . 1.00 max 0.07 max
C 1.05–1.35 11.5–14.0 1.5–2.5 . . 1.00 max 0.07 max
D 0.7 –1.3 11.5–14.0 . . 3.0–4.0 1.00 max 0.07 m
...
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