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ASTM B581-02(2008)

Historical Reaffirmation

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

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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)

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.


SDO ASTM: ASTM International
Document Number B581
Publication Date Nov. 1, 2008
Language en - English
Page Count 4
Revision Level 02(2008)
Supercedes
Committee B02.07
Publish Date Document Id Type View
July 1, 2017 B0581-17 Revision
Oct. 10, 2002 B0581-02 Revision
Oct. 10, 1997 B0581-97 Revision
April 1, 2023 B0581-17R23 Reaffirmation
Feb. 1, 2013 B0581-02R13E01 Reaffirmation
Nov. 1, 2008 B0581-02R08 Reaffirmation