ASTM A990-05

    Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service

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    1. 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 inch-pound units or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in parentheses. 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 this specification.

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel

    A494/A494M Specification for Castings, Nickel and Nickel Alloy

    A703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing Parts

    A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

    A744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service

    A802/A802M Practice for Steel Castings, Surface Acceptance Standards, Visual Examination

    A903/A903M Specification for Steel Castings, Surface Acceptance Standards, Magnetic Particle and Liquid Penetrant Inspection

    A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys

    A985/A985M Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts

    E94 Guide for Radiographic Examination

    E165 Practice for Liquid Penetrant Examination for General Industry

    E186 Reference Radiographs for Heavy-Walled (2 to 412-in. (50.8 to 114-mm)) Steel Castings

    E272 Reference Radiographs for High-Strength Copper-Base and Nickel-Copper Alloy Castings

    E280 Reference Radiographs for Heavy-Walled (412 to 12-in. (114 to 305-mm)) Steel Castings

    E446 Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness


    ICS Code

    ICS Number Code 77.120.40 (Nickel, chromium and their alloys)

    UNSPSC Code

    UNSPSC Code 31100000(Castings and casting assemblies)


    DOI: 10.1520/A0990-05

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