ASTM-A890 2012

$35.75

A890/A890M-12 Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

Published By	Publication Date	Number of Pages
ASTM	2012	5

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Categories: 77.140.80 - Iron and steel castings, ASTM

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Description

ASTM A890/A890M-12

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

ASTM A890/A890M

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. 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 600ºF [315ºC].

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 non-conformance with the standard.

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

Keywords

austenite; duplex stainless steel; ferrite; stainless steel; steel castings; Austenitic stainless steel castings–specifications; Class codes (for metals/alloys); Corrosive service applications–castings; Duplex stainless steel–specifications; Ferritic steel castings–specifications; Iron-chromium castings–specifications; Stainless steel castings–specifications; UNS J93371 (duplex alloy steel casting, 3A); UNS J93372 (cast duplex Cr-Ni-Cu-Mo-N stainless steel); Austenitic stainless steel castings–specifications; Class codes (for metals/alloys); Corrosive service applications–castings; Duplex stainless steel–specifications; Ferritic steel castings–specifications; Iron-chromium castings–specifications; Stainless steel castings–specifications; UNS J93371 (duplex alloy steel casting, 3A); UNS J93372 (cast duplex Cr-Ni-Cu-Mo-N stainless steel)

ICS Code

ICS Number Code 77.140.80 (Iron and steel castings)

DOI: 10.1520/A0890_A0890M-12

Additional information

Standard Title	A890/A890M-12 Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
Published Code	ASTM
Publication Date	2012
Pages Count	5
ICS Codes	77.140.80 - Iron and steel castings