ASTM B581-02(2008) - 1.11.2008
 
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

remainderA

47.0–52.0

remainderA

remainderA

30.0-32.0

Chromium

21.0–23.5

23.0–26.0

21.0–23.5

28.0–31.5

26.0-28.0

Iron

18.0–21.0

remainderA

18.0–21.0

13.0–17.0

remainderA

Molybdenum

5.5–7.5

5.0–7.0

6.0–8.0

4.0–6.0

30.-7.0

Copper

1.5–2.5

0.70–1.20

1.5–2.5

1.0–2.4

1.0-1.4

Manganese

1.0–2.0

1.0 max

1.0 max

1.5 max

2.0 max

Cobalt, max

2.5

...

5.0 max

5.0 max

...

Carbon, max

0.05

0.03

0.015 max

0.03 max

0.015

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

Phosphorus, max

0.04

0.03

0.04 max

0.04 max

0.020

Sulfur, max

0.03

0.03

0.03 max

0.02 max

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

...

...

...

...

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), 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 ¾ (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

¾ to 3½ (19.05 to 88.9), incl

0.010 (0.254)

0

0.008 (0.203)

 
2. Referenced Documents

E55-23

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

E29-22

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

E8-04

Standard Test Methods for Tension Testing of Metallic Materials

B880-24

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

E1473-22

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