ASTM-A990 › Historical Revision Information
Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service
The following bibliographic material is provided to assist you with your purchasing decision:
This specification covers iron-nickel-chromium and nickel alloy castings specially processed with restricted melt practices, weldability testing, and nondestructive examination (NDE) requirements for use in pressure retaining parts with corrosive service environments. The choice of manufacturing procedure to be used for producing the alloy castings shall be according to specified metallic contents. Materials shall conform to specified chemical composition and tensile property requirements, and weldability qualifications. Nondestructive examination requirements such as casting thickness shall be evaluated by visual, radiographic, and liquid penetrant inspection. Castings shall be repair welded and solution heat treated prior to final cleaning by blasting, and shall not be peened, plugged, or impregnated.
Scope
1.1 This specification covers iron-nickel-chromium and nickel alloy castings specially processed with restricted melt practices, weldability testing, and nondestructive examination (NDE) requirements.
1.2 A number of grades of iron-nickel-chromium and nickel alloy castings are included in this specification. Since these grades possess varying degrees of suitability for service in corrosive environments, it is the responsibility of the purchaser to determine which grade shall be furnished. Selection will depend on design and service conditions, mechanical properties, and corrosion-resistant characteristics.
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 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. Within the text, the SI units are shown in brackets or parentheses.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
casting; iron-nickel-chromium; nickel alloy; pressure retaining; ICS Number Code 77.120.40 (Nickel, chromium and their alloys)
To find similar documents by ASTM Volume:
01.02 (Ferrous Castings; Ferroalloys)
To find similar documents by classification:
77.120.40 (Nickel, chromium and their alloys)
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
Document Number
ASTM-A990/A990M-14a
Revision Level
2014A EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Nov. 1, 2014
Document Type
Specification
Page Count
7 pages
Committee Number
A01.18