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ASTM A890/A890M-99(2007)

(Specification)

Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

ABSTRACT
This specification covers castings, iron-chromium-nickel-molybdenum corrosion-resistant, duplex(austenitic/ferritic) for general application. Castings shall be heat treated in accordance with the required procedure and heat-treat temperature. Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical properties. Minimum heat-treat temperatures are specified; however, it is sometimes necessary to heat-treat at higher temperatures, hold for some minimum time at temperature and then rapidly cool the castings in order to enhance the corrosion resistance and meet the required mechanical properties. The steel shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen. Castings shall be marked for material identification with the specification designation and grade.
SCOPE
1.1 This specification covers a group of cast duplex stainless steels (austenitic/ferritic).
1.2 The duplex stainless steel alloys offer a combination of enhanced mechanical properties and corrosion resistance when properly balanced in composition and properly heat treated. Ferrite levels are not specified, but these alloys will develop a range of approximately 30 to 60 % ferrite with the balance austenite.
1.3 The values stated in either inch-pound units or metric (SI) units are to be regarded separately as standard. Within the text the metric (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.

General Information

Status
Historical
Publication Date
31-Oct-2007
ICS
77.140.80 - Iron and steel castings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.18 - Castings
Current Stage
Ref Project

Relations

Replaces
ASTM A890/A890M-99(2003) - Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
Effective Date
01-Nov-2007
Replaced By
ASTM A890/A890M-10 - Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
Effective Date
01-Apr-2010
Referred By
ASTM F998-12(2022) - Standard Specification for Centrifugal Pump, Shipboard Use
Effective Date
01-Nov-2007
Referred By
ASTM A781/A781M-21 - Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
01-Nov-2007
Referred By
ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
01-Nov-2007
Referred By
ASTM A743/A743M-21 - Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
Effective Date
01-Nov-2007
Referred By
ASTM A488/A488M-18e2 - Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
Effective Date
01-Nov-2007

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ASTM A890/A890M-99(2007) - Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General ApplicationASTM A890/A890M-99(2007) - Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
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ASTM A890/A890M-99(2007) - Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
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Standards Content (Sample)

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: A890/A890M – 99 (Reapproved 2007)
Standard Specification for
Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-
Resistant, Duplex (Austenitic/Ferritic) for General
1
Application
This standard is issued under the fixed designationA890/A890M; 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 E1245 Practice for Determining the Inclusion or Second-
Phase Constituent Content of Metals by Automatic Image
1.1 Thisspecificationcoversagroupofcastduplexstainless
Analysis
steels (austenitic/ferritic).
1.2 The duplex stainless steel alloys offer a combination of
3. Ordering Information
enhanced mechanical properties and corrosion resistance when
3.1 Orders for material to this specification shall include the
properly balanced in composition and properly heat treated.
following, as required, to describe the material adequately:
Ferrite levels are not specified, but these alloys will develop a
3.1.1 Description of casting by pattern or drawing number
range of approximately 30 to 60 % ferrite with the balance
(dimensional tolerance shall be included on the casting draw-
austenite.
ing),
1.3 The values stated in either inch-pound units or metric
3.1.2 Specification designation and grade including year of
(SI) units are to be regarded separately as standard. Within the
issue,
text the metric (SI) units are shown in brackets. The values
3.1.3 Options in the specification (See 9.1), and
stated in each system are not exact equivalents; therefore, each
3.1.4 Supplementary requirements desired, including the
system must be used independently of the other. Combining
standards of acceptance.
values from the two systems may result in nonconformance
with the specification.
4. Process
4.1 The steel shall be made by the electric furnace process
2. Referenced Documents
2 with or without separate refining such as argon-oxygen-
2.1 ASTM Standards:
decarburization (AOD).
A370 Test Methods and Definitions for Mechanical Testing
of Steel Products
5. Heat Treatment
A732/A732M Specification for Castings, Investment, Car-
5.1 Castings shall be heat treated in accordance with the
bon and Low Alloy Steel for General Application, and
requirements in Table 1.
Cobalt Alloy for High Strength at Elevated Temperatures
A781/A781M Specification for Castings, Steel and Alloy,
NOTE 1—Proper heat treatment of these alloys is usually necessary to
Common Requirements, for General Industrial Use enhance corrosion resistance and in some cases to meet mechanical
properties. Minimum heat-treat temperatures are specified; however, it is
E29 Practice for Using Significant Digits in Test Data to
sometimes necessary to heat-treat at higher temperatures, hold for some
Determine Conformance with Specifications
minimum time at temperature and then rapidly cool the castings in order
E562 Test Method for Determining Volume Fraction by
to enhance the corrosion resistance and meet mechanical properties.
Systematic Manual Point Count
6. Chemical Composition
6.1 The steel shall conform to the requirements as to
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
chemical composition prescribed in Table 2.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
7. General Requirements
Current edition approved Nov. 1, 2007. Published November 2007. Originally
7.1 Material furnished to this specification shall conform to
approved in 1988. Last previous edition approved in 2003 as A890/A890M – 99
(2003). DOI: 10.1520/A0890_A0890M-99R07.
the requirements of SpecificationA781/A781M, including any
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
supplementary requirements that are indicated in the purchase
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
order. Failure to comply with the general requirements of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Specification A781/A781M constitutes nonconformance with
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A890/A890M – 99 (2007)
TABLE 1 Heat Treatment Requirements
8.2 Weld repairs shall be subject to the same quality
standards as are used to inspect the castings.
Grade Heat Treatment
8.3 When post weld/heat treatment is believed necessary for
1A, 1B, 1C Heat to 1900°F [1040°C] minimum, hold for sufficient time to
adequate corrosion resistance or impact resistance, Sup-
heat casting uniformly to temperature, quench
...

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ASTM A487/A487M-21(Specification)
Standard Specification for Steel Castings Suitable for Pressure Service

ABSTRACT
This specification covers low-alloy steel and martensitic stainless steels in the normalized and tempered, or quenched and tempered conditions, suitable for pressure-containing parts. All castings shall receive the specified heat treatment requirement: austenitizing temperature, medium, quenching cool, and tempering temperature. Preliminary heat treatment and multiple tempering are permitted. Recording-type pyrometers shall be used to control the furnace temperature. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, boron, and copper. Residual elements include: copper, nickel, chromium, tungsten, molybdenum, and vanadium. Tensile properties of the steel shall conform to the requirements for tensile strength, yield strength, elongation, reduction of area, hardness, and maximum thickness. Product analysis tolerance is specified. Repair by welding may be done.
SCOPE
1.1 This specification2 covers low-alloy steels and martensitic stainless steels in the normalized and tempered, or quenched and tempered, condition suitable for pressure-containing parts. The weldability of the classes in this specification varies from readily weldable to weldable only with adequate precautions, and the weldability of each class should be considered prior to assembly by fusion welding.  
1.2 Selection will depend on design, mechanical, and service conditions. Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties are obtained.  
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.  
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ASTM A781/A781M-21(Specification)
Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use

ABSTRACT
This specification covers a group of common requirements that, unless covered by the individual product specification in another ASTM document, applies to steel and alloy castings for use in general industrial applications. Materials shall be produced by open-hearth or electric furnace process with or without separate refining, such as argon-oxygen-decarburization (AOD), and then consequently heat treated in the working zone. Castings shall receive heat and product analysis to evaluate their conformance to chemical composition requirements. Mechanical requirements shall also be assessed. The surfaces of castings shall be free of adhering sand, scale, cracks, hot tears, and other surface discontinuities. Repair welding may be performed as required.
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ASTM
Designation  
Title of Specification  
A27/A27M  
Steel Castings, Carbon, for General Application  
A128/A128M  
Steel Castings, Austenitic Manganese  
A148/A148M  
Steel Castings, High Strength, for Structural Purposes  
A297/A297M  
Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application  
A447/A447M  
Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service  
A494/A494M  
Castings, Nickel and Nickel Alloy  
A560/A560M  
Castings, Chromium-Nickel Alloy  
A743/A743M  
Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application  
A744/A744M  
Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service  
A747/A747M  
Steel Castings, Stainless, Precipitation Hardening  
A890/A890M  
Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application    
A915/A915M  
Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades  
A958/A958M  
Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similiar to Standard Wrought Grades  
A1002  
Castings, Nickel-Aluminum Ordered Alloy  
1.2 This specification also covers a group of supplementary requirements that may be applied to the above specifications as indicated therein. These are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order.  
1.3 The requirements of the individual material specification and this general specification shall prevail in the sequence named.  
1.4 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.  
1.5 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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  • Technical specification
    12 pages
    English language
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ASTM
ASTM A447/A447M-11(2021)(Specification)
Standard Specification for Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service

ABSTRACT
This specification covers iron-base, heat-resisting alloy castings, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications. The alloys shall be electric-furnace processed and heat treated. The castings shall conform to the required chemical compositions of nickel, chromium, carbon, nitrogen, manganese, silicon, phosphorus, sulfur, and iron. The specimens shall undergo tension test after aging and short-time high-temperature tension test and shall conform to the required values of tensile strength and elongation. A stress-rupture test shall also be performed wherein the specimens shall conform to the required values of tensile stress. The specimen shall also conform to the required values of magnetic permeability.
SCOPE
1.1 This specification covers iron-base, heat-resisting alloy castings of the 25 % chromium, 12 % nickel class, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications up to 2000 °F [1095 °C].  
1.2 In the absence of significant proportions of elements other than those prescribed in Section 5, the two types of alloys covered by this specification may in general be distinguished as follows:  
1.2.1 Type I—Alloys characterized by relatively low limiting creep stress at temperatures between 1500 and 2000 °F [815 and 1095 °C], and relatively high ductility at ordinary temperatures after aging for short periods at temperatures between 1300 and 1500 °F [705 and 815 °C].  
1.2.2 Type II—Alloys having relatively high limiting creep stress but which may develop low ductility at ordinary temperatures when aged for short periods at temperatures between 1350 and 1500 °F [730 and 815 °C].  
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 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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