ASTM A395 / A395M - 99(2014)

    Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures

    Active Standard ASTM A395 / A395M | Developed by Subcommittee: A04.02

    Book of Standards Volume: 01.02


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    Abstract

    This specification covers standard requirements for ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings are classified by grades based on mechanical property requirements. These iron castings shall meet the specified values of tensile strength, yield strength, elongation and hardness. Chemical analysis shall be performed wherein the casting shall conform to the required chemical composition for carbon, silicon, and phosphorous. The material shall meet the required tensile properties, hardness, and microstructure. The iron casting shall undergo pressure test after machining. The thickness of any repaired section in relation to the size of the plug used shall be indicated. The minimum radius of repaired sections of cylinders or cones in relation to the size of plug used shall not exceed the prescribed limit. Other defective areas may also be repaired by plugging provided the minimum ligament between plugs in adjacent areas shall not be less than twice the distance from the nearest plug. Three Y-blocks shall be utilized as test coupons. The material shall undergo the following test methods: tension test, chemical analysis, yield strength test, and hardness test.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings of all grades are suitable for use up to 450°F. For temperatures above 450°F and up to 650°F, only Grade 60–40–18 castings are suitable (Note 1).

    1.2 Valves, flanges, pipe fittings, pumps, and other piping components are generally manufactured in advance and supplied from stock by the manufacturer, jobber, or dealer.

    1.3 For supplemental casting requirements, Specification A834 may be utilized.

    1.4 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.

    Note 1For service other than as specified in this section, reference should be made to Specification A536 for Ductile Iron Castings.2


    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

    A247 Test Method for Evaluating the Microstructure of Graphite in Iron Castings

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A536 Specification for Ductile Iron Castings

    A732/A732M Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures

    A834 Specification for Common Requirements for Iron Castings for General Industrial Use

    E8 Test Methods for Tension Testing of Metallic Materials

    E10 Test Method for Brinell Hardness of Metallic Materials

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

    E689 Reference Radiographs for Ductile Iron Castings

    E1806 Practice for Sampling Steel and Iron for Determination of Chemical Composition

    F1476 Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications

    F1548 Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications


    ICS Code

    ICS Number Code 77.140.80 (Iron and steel castings)

    UNSPSC Code

    UNSPSC Code 31100000(Castings and casting assemblies)


    DOI: 10.1520/A0395_A0395M

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