ASTM-A859 2009

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A859/A859M-04(2009) Standard Specification for Age-Hardening Alloy Steel Forgings for Pressure Vessel Components

Published By	Publication Date	Number of Pages
ASTM	2009	5

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Categories: 77.140.30 - Steels for pressure purposes, ASTM

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Description

1.1 This specification covers requirements for low-carbon age-hardening nickel-copper-chromium-molybdenum-columbium alloy steel forgings for pressure vessel components.

1.2 Forgings under this specification are available as Grades A or B. Grade A may be ordered in one or two classes as follows:

1.2.1 Grade A Class 1 Normalized-and-precipitation-heat-treated, providing a minimum yield strength of 55 ksi [380 MPa] and a minimum tensile strength of 65 ksi [450 MPa].

1.2.2 Grade A Class 2 Quenched-and-precipitation-heat-treated, providing a minimum yield strength of 65 ksi [450 MPa] and a minimum tensile strength of 75 ksi [MPa].

1.2.3 Grade A was the original steel composition in this specification.

1.3 Although the material is readily weldable, welding procedures are of fundamental importance and must be such as not to affect adversely the properties of the material, especially in the heat-affected zone. It is presupposed that welding procedures will be suitable for the material being welded.

1.4 Supplementary requirements, including those applicable in Specification A 788/A 788M , are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order.

1.5 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.

1.6 This specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable M specification designation [SI units], the material shall be furnished to inch-pound units.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Ordering Information and General Requirements
2	Manufacture Chemical Composition Mechanical Requirements TABLE 1
3	Workmanship, Finish, and Appearance Repair Welding Test Reports TABLE 2 TABLE 3
4	Keywords

Additional information

Standard Title	A859/A859M-04(2009) Standard Specification for Age-Hardening Alloy Steel Forgings for Pressure Vessel Components
Published Code	ASTM
Publication Date	2009
Pages Count	5
ICS Codes	77.140.30 - Steels for pressure purposes

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ASTM-A859 2009

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