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ASTM A 844/A844M : 2009 : R2015

Current
Current

The latest, up-to-date edition.

Standard Specification for Steel Plates, 9 %  Nickel Alloy, for Pressure Vessels, Produced by the Direct-Quenching Process
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

18-09-2015

CONTAINED IN VOL. 01.04, 2017 Defines 9% nickel-alloy steel plates made by the direct-quenching process.

1.1This specification covers 9 % nickel-alloy steel plates produced by the direct-quenching process. The plates are intended primarily for use in welded pressure vessels.

1.2The direct-quenching process consists of quenching the plates directly after rolling, without permitting the plates to cool below the critical temperature prior to initiation of the quenching operation, and subsequently tempering the plates. (This differs from the “conventional” process in which the plates are permitted to cool to a temperature significantly below the critical temperature, usually to ambient temperature, prior to reheating to a temperature above the upper critical temperature, then quenching, and subsequently tempering.)

1.3The maximum nominal thickness of plates furnished under this specification shall not exceed 2 in. [50 mm].

1.4This material is susceptible to magnetization. Use of magnets in handling after heat treatment should be avoided if residual magnetism would be detrimental to subsequent fabrication or service.

1.5The values stated in either inch-pound 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.

Committee
A 01
DocumentType
Standard
Pages
3
ProductNote
Reconfirmed 2015
PublisherName
American Society for Testing and Materials
Status
Current
SupersededBy
Supersedes

ASTM A 20/A20M : 2020 Standard Specification for General Requirements for Steel Plates for Pressure Vessels

ASTM A 435/A435M : 2017 : REDLINE Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates
ASTM A 577/A577M : 2017 : REDLINE Standard Specification for Ultrasonic Angle-Beam Examination of Steel Plates
ASTM A 578/A578M : 2017 : REDLINE Standard Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
ASTM A 20/A20M : 2004 Standard Specification for General Requirements for Steel Plates for Pressure Vessels
ASTM A 577/A577M : 1990 : R1996 Standard Specification for Ultrasonic Angle-Beam Examination of Steel Plates
ASTM A 578/A578M : 1996 Standard Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for Special Applications
ASTM A 20/A20M : 2000 : REV B Standard Specification for General Requirements for Steel Plates for Pressure Vessels

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