ASTM B 581 : 2017
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
05-26-2023
English
08-16-2017
1.1This 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 | Alloy | Alloy | Alloy | Alloy | Alloy | |
| 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 | |||||
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 | 5/16to 3/4(7.94 to 19.05), incl | 90 000 (621) | 35 000 (241) | 35 |
| Over 3/4to 31/2(19.05 to 88.9), incl | 85 000 (586) | 30 000 (207) | 30 | |
| N06975 | 5/16to 31/2(7.94 to 88.9), incl | 85 000 (586) | 32 000 (221) | 40 |
| N06985 | 5/16to 3/4(7.9 to 19.05), incl | 90 000 (621) | 35 000 (241) | 45 |
| Over 3/4to 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 |
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 | |||
| 5/16to 7/16(7.94 to 11.11), incl | 0.012 (0.305) | 0.012 (0.305) | 0.018 (0.457) |
| Over 7/16to 5/8(11.11 to 15.87), incl | 0.014 (0.355) | 0.014 (0.355) | 0.020 (0.508) |
| Over 5/8to 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 | |||
| 3/4to 31/2(19.05 to 88.9), incl | 0.010 (0.254) | 0 | 0.008 (0.203) |
1.2The following products are covered under this specification:
1.2.1Rods 5/16to 3/4in. (7.94 to 19.05 mm) excl in diameter, hot- or cold-finished, solution annealed and pickled or mechanically descaled.
1.2.2Rods 3/4to 31/2in. (19.05 to 88.9 mm) incl in diameter, hot- or cold-finished, solution annealed, ground or turned.
1.3The 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.
1.4This 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.
1.5This 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.
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