ASTM B581 - 17

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

    Active Standard ASTM B581 | Developed by Subcommittee: B02.07

    Book of Standards Volume: 02.04


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    Abstract

    This specification covers nickel-chromium-iron-molybdenum-copper alloy rods (UNS N06007, N06975, N06985, N06030, and N08031), hot- or cold-finished, solution annealed, ground, or turned, for use in general corrosive service. Heat and product (check) analysis of the alloy shall conform to the chemical composition requirements prescribed for nickel, chromium, iron, molybdenum, copper, manganese, cobalt, carbon, tungsten, silicon, phosphorus, sulfur, columbium and tantalum, titanium, and nitrogen. The material shall conform to the specified straightness criteria and to the mechanical property requirements including tensile strength, yield strength, and elongation, as determined by tension 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 specification2 covers rod of Ni-Cr-Fe-Mo-Cu alloys (UNS N06007, N06975, N06985, N06030, N08031, and N08034)3 as shown in Tables 1-3, for use in general corrosive service.

    TABLE 1 Chemical Requirements

    Element

    Composition Limits, %

    Alloy
    N06007

    Alloy
    N06975

    Alloy
    N06985

    Alloy
    N06030

    Alloy
    N08031

    Alloy
    N08034

    Nickel

    remainderA

    47.0–52.0

    remainderA

    remainderA

    30.0-32.0

    33.5-35.0

    Chromium

    21.0–23.5

    23.0–26.0

    21.0–23.5

    28.0–31.5

    26.0-28.0

    26.0-27.0

    Iron

    18.0–21.0

    remainderA

    18.0–21.0

    13.0–17.0

    remainderA

    remainderA

    Molybdenum

    5.5–7.5

    5.0–7.0

    6.0–8.0

    4.0–6.0

    6.0-7.0

    6.0-7.0

    Copper

    1.5–2.5

    0.70–1.20

    1.5–2.5

    1.0–2.4

    1.0-1.4

    0.5-1.5

    Manganese

    1.0–2.0

    1.0 max

    1.0 max

    1.5 max

    2.0 max

    1.0-4.0

    Cobalt, max

    2.5

    ...

    5.0 max

    5.0 max

    ...

    ...

    Carbon, max

    0.05

    0.03

    0.015 max

    0.03 max

    0.015

    0.01

    Tungsten

    1.0 max

    ...

    1.5 max

    1.5–4.0

    ...

    ...

    Silicon, max

    1.0

    1.0

    1.0 max

    0.8 max

    0.3

    0.1

    Phosphorus, max

    0.04

    0.03

    0.04 max

    0.04 max

    0.020

    0.020

    Sulfur, max

    0.03

    0.03

    0.03 max

    0.02 max

    0.010

    0.010

    Columbium + tantalum

    1.75–2.50

    ...

    0.50 max

    0.30–1.50

    ...

    ...

    Titanium

    ...

    0.7–1.5

    ...

    ...

    ...

    ...

    Nitrogen

    0.15-0.25

    ...

    ...

    ...

    ...

    0.10-0.25

    Aluminum

     

     

     

     

     

    0.3

    (A) See 13.1.1.

    TABLE 2 Mechanical Property Requirements

    Alloy

    Specified Diameter, in. (mm)

    Tensile Strength min, psi (MPa)

    Yield Strength (0.2 % Offset), min, psi (MPa)

    Elongation in 2 in. or 50.8 mm or 4D A min

    N06007

    5/16 to 3/4 (7.94 to 19.05), incl

    90 000 (621)

    35 000 (241)

    35

     

    Over 3/4 to 31/2 (19.05 to 88.9), incl

    85 000 (586)

    30 000 (207)

    30

    N06975

    5/16 to 31/2 (7.94 to 88.9), incl

    85 000 (586)

    32 000 (221)

    40

    N06985

    5/16 to 3/4 (7.9 to 19.05), incl

    90 000 (621)

    35 000 (241)

    45

     

    Over 3/4 to 31/2 (19.05 to 88.9), incl

    85 000 (586)

    30 000 (207)

    35

    N06030

    ...

    85 000 (586)

    35 000 (241)

    30

    N08031

    All sizes

    94 000 (648)

    40 000 (276)

    40

    N08034

    All sizes

    94 000 (650)

    40 000 (280)

    40

    (A) D refers to the diameter of the tension specimen.

    TABLE 3 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), incl

    0.012 (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 3/4 (15.87 to 19.05), excl

    0.016 (0.406)

    0.016 (0.406)

    0.024 (0.610)

    Hot-Finished, Annealed, and Ground or Turned Rods

    3/4 to 31/2 (19.05 to 88.9), incl

    0.010 (0.254)

    0

    0.008 (0.203)

    1.2 The following products are covered under this specification:

    1.2.1 Rods 5/16 to 3/4 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 3/4 to 31/2 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 Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health and environmental practices, and determine the applicability of regulatory limitations prior to use.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    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


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0581-17

    Citation Format

    ASTM B581-17, Standard Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy Rod, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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