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ASTM A 890/A890M : 2018 : REV A

Current
Current

The latest, up-to-date edition.

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

Hardcopy , PDF

Language(s)

English

Published date

01-10-2018

1.1This specification covers a group of cast duplex stainless steels (austenitic/ferritic).

1.2The 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. It is the responsibility of the purchaser to determine which grade shall be furnished depending on design and service conditions, mechanical properties, and corrosion-resistant characteristics.

Note 1:Because of the possibility of precipitation of embrittling phases, the grades included in this specification are not recommended for service at temperatures above 600 °F [315 °C].

1.3The 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.

1.3.1Within the text, the SI units are shown in brackets.

1.4This 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.

Committee
A 01
DocumentType
Standard
Pages
5
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM E 1245 : 1995 Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis
ASTM A 957/A957M : 2020 Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
ASTM A 957/A957M : 2021 Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
ASTM A 781/A781M : 2020 : REV A Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
ASTM E 1245 : 2003 : R2016 Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis
ASTM A 781/A781M : 2021 Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
ASTM E 562 : 1999 Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count
ASTM E 1245 : 2003 : R2023 Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis

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