ASTM-A890 › Historical Revision Information
Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
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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.
Keywords
austenite; duplex stainless steel; ferrite; stainless steel; steel castings; ICS Number Code 77.140.80 (Iron and steel castings)
To find similar documents by ASTM Volume:
01.02 (Ferrous Castings; Ferroalloys)
To find similar documents by classification:
77.140.80 (Iron and steel castings)
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Document Number
ASTM-A890-91a
Revision Level
1991A EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Aug. 15, 1991
Document Type
Specification
Page Count
3 pages
Committee Number
A01.18