ASTM A128/A128M-93(2017)
(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.
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Designation: A128/A128M −93 (Reapproved 2017)
Standard Specification for
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 4.1.1 Quantity,
4.1.2 Specification, grade,
1.1 This specification covers Hadfield austenitic manganese
4.1.3 Whetheranyportionofthecastingistobechilled,and
steel castings and alloy modifications.
whether this is to be spot or full-face chilling,
1.2 The values stated in either inch-pound units or SI units
4.1.4 Special heat-treatment requirements, and
are to be regarded separately as standard. Within the text, the
4.1.5 Supplementary requirements.
SI units are shown in brackets. The values stated in each
5. Heat Treatment
system are not exact equivalents; therefore, each system must
be used independently of the other. Combining values from the
5.1 The castings shall be suitably heat treated to achieve
two systems may result in nonconformance with the specifi-
toughness and ductility. This heat treatment shall consist of
cation.
uniformly heating the castings to a temperature applicable for
grade of steel produced, at least 1800 °F [1000 °C], and
2. Referenced Documents
holding until the temperature is uniform throughout and
2.1 ASTM Standards:
quenching in an applicable medium, normally water.
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
6.2 Contamination of the drillings by drill chips must be
Specification A781/A781M constitutes nonconformance with
avoided. Flat drills of the best high speed steels, or drills of
this specification. In case of conflict between the requirements
some of the newer tool materials, will generally be satisfactory
of this specification and Specification A781/A781M, this
for drilling manganese steel. Manganese steel may be drilled
specification shall prevail.
best after it has been annealed for several hours at from 900 to
1100 °F [500 to 600 °C].
4. Ordering Information
4.1 Orders for material under this specification should
7. Repair by Welding
include the following information in proper sequence.
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 Alloysand 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 March 15, 2017. Published March 2017. Originally
approved in 1930. Last previous edition approved in 2012 as A128/A128M – 93 standards as are used to inspect the castings.
(2012). DOI: 10.1520/A0128_A0128M-93R17.
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 cast-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ings
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A128/A128M − 93 (2017)
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-
...
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 2012) A128/A128M − 93 (Reapproved 2017)
Standard Specification for
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
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.
2. Referenced Documents
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.
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 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],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 5.15.1.
6. Chemical Composition
6.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 1.
6.2 Contamination of the drillings by drill chips must be avoided. Flat drills of the best highspeed high speed steels, or drills
of some of the newer tool materials, will generally be satisfactory for drilling manganese steel. Manganese steel may be drilled
best after it has been annealed for several hours at from 900 to 1100°F1100 °F [500 to 600°C].600 °C].
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee A01.18
on Castings.
Current edition approved March 1, 2012March 15, 2017. Published April 2012March 2017. Originally approved in 1930. Last previous edition approved in 20072012 as
A128/A128M – 93 (2012). (2007). DOI: 10.1520/A0128_A0128M-93R12.10.1520/A0128_A0128M-93R17.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A128/A128M − 93 (2017)
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 max
D 0.7 –1.3 11.5–14.0 . . 3.0–4.0 1.00 max 0.07 max
E-1 0.7 –1.3 11.5–14.0 . 0.9–1.2 . 1.00 max 0.07 max
E-2 1.05–1.45 11.5–
...
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