ASTM-A522 Standard Specification for Forged or Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for Low-Temperature Service

ASTM-A522 - 2022 EDITION - CURRENT -- See the following: ASTM-A522/A522M
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Standard Specification for Forged or Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for Low-Temperature Service
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Scope

1.1 This specification covers 8 and 9 % nickel-alloy steel forged or rolled flanges, fittings, valves, and parts intended for use in welded pressure vessels for low-temperature service. The specification is applicable to forgings with maximum section thickness of 3 in. [75 mm] in the double normalized and tempered condition and 5 in. [125 mm] in the quenched and tempered condition. Forgings under this specification are intended for service at operating temperatures not lower than -320oF [-196oC] for Type I or -275oF [-170oC] for Type II or higher than 250oF [o121C].

1.2 Material under this specification is available in two types having different chemical compositions as follows:

TypeNominal Nickel Content, %
I9
II8

1.3 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.

1.4 The values stated in either inch-pound units 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.

Keywords

low temperature applications; nickel alloy steel; pipe fittings; steel; piping applications; pressure containing parts; steel flanges; steel forgings; alloy; steel valves; ICS Number Code 23.040.40 (Metal fittings)

To find similar documents by ASTM Volume:

01.01 (Steel--Piping, Tubing, Fittings)

To find similar documents by classification:

23.040.40 (Metal fittings)

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Document Number

ASTM-A522/A522M

Revision Level

2022 EDITION

Status

Current

Modification Type

Revision

Publication Date

Oct. 13, 2022

Document Type

Specification

Page Count

4 pages

Committee Number

A01.22