ASTM B581-02(2008)

    Standard Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy Rod

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    1. Scope

    1.1 This specification covers rod of Ni-Cr-Fe-Mo-Cu alloys (UNS N06007, N06975, N06985, N06030, and N08031)* as shown in Tables 1-2, for use in general corrosive service.

    1.2 The following products are covered under this specification:

    1.2.1 Rods 5/16 to ¾ in. (7.94 to 19.05 mm) excl in diameter, hot- or cold-finished, solution annealed and pickled or mechanically descaled.

    1.2.2 Rods ¾ to 3½ in. (19.05 to 88.9 mm) incl in diameter, hot- or cold-finished, solution annealed, ground or turned.

    1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

    TABLE 1 Chemical Requirements

    ElementComposition Limits, %
    Alloy N06007Alloy N06975Alloy N06985Alloy N06030Alloy N08031
    Nickel remainderA47.052.0remainderAremainderA30.0-32.0
    Chromium 21.023.5 23.026.0 21.023.5 28.031.526.0-28.0
    Iron 18.021.0remainderA18.021.013.017.0remainderA
    Molybdenum5.57.5 5.07.0 6.08.0 4.06.030.-7.0
    Copper 1.52.5 0.701.20 1.52.5 1.02.41.0-1.4
    Manganese 1.02.0 1.0 max 1.0 max 1.5 max2.0 max
    Cobalt, max2.5... 5.0 max 5.0 max...
    Carbon, max0.050.030.015 max 0.03 max0.015
    Tungsten 1.0 max... 1.5 max 1.54.0...
    Silicon, max1.0 1.0 1.0 max 0.8 max0.3
    Phosphorus, max 0.04 0.03 0.04 max 0.04 max0.020
    Sulfur, max 0.03 0.03 0.03 max 0.02 max0.010
    Columbium + tantalum 1.752.50 ... 0.50 max 0.301.50...
    Titanium ... 0.71.5... ......
    Nitrogen0.15-0.25............

    A See 13.1.1.

    TABLE 2 Permissible Variations in Diameter and Out-of-Roundness of Rods

    Specified Diameter, in. (mm) Permissible Variations, in. (mm)
    Diameter Out-of-Roundness, max
    +
    Hot-Finished, Annealed, and Descaled Rods
    5/16 to 7/16 (7.94 to 11.11), incl0.012 (0.305)0.012 (0.305)0.018 (0.457)
    Over 7/16 to 5/8(11.11 to 15.87), incl 0.014 (0.355)0.014 (0.355)0.020 (0.508)
    Over 5/8 to ¾ (15.87 to 19.05), excl0.016 (0.406)0.016 (0.406)0.024 (0.610)
    Hot-Finished, Annealed, and Ground or Turned Rods
    ¾ to 3½ (19.05 to 88.9), incl0.010 (0.254)00.008 (0.203)


    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

    B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys

    E8 Test Methods for Tension Testing of Metallic Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition

    E1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys


    ICS Code

    ICS Number Code 77.150.40 (Nickel and chromium products)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/B0581-02R08

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