ASTM B674-96

Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Tube

SCOPE
1.1 This specification covers UNS N08904, UNS N08925,* and UNS N08926 welded tube for general corrosion applications.
1.2 This specification covers outside diameter and nominal wall tube.
1.2.1 The tube sizes covered by this specification are 1/8 to 5 in. (3.2 to 127 mm) in outside diameter and 0.015 to 0.320 in. (0.38 to 8.13 mm), inclusive, in wall thickness.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are for information only.
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 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.

General Information

• Status: Historical
• Publication Date: 09-Oct-1996
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Replaced By: ASTM B674-96(2002)e1 - Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Tube
• Effective Date: 10-Oct-1996

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: B 674 – 96 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
1
UNS N08904, UNS N08925, and UNS N08926 Welded Tube
This standard is issued under the fixed designation B 674; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 Chemical Requirements
1. Scope
Composition, %
1.1 This specification covers UNS N08904, UNS N08925,*
Element
UNS N08904 UNS N08925 UNS N08926
and UNS N08926 welded tube for general corrosion applica-
tions. Carbon, max 0.020 0.020 0.020
Manganese, max 2.00 1.00 2.00
1.2 This specification covers outside diameter and nominal
Phosphorus, 0.045 0.045 0.03
wall tube.
max
1
1.2.1 The tube sizes covered by this specification are ⁄8 to 5 Sulfur, max 0.035 0.030 0.01
Silicon, max 1.00 0.50 0.5
in. (3.2 to 127 mm) in outside diameter and 0.015 to 0.320 in.
Nickel 23.0 to 28.0 24.0 to 26.0 24.00 to 26.00
(0.38 to 8.13 mm), inclusive, in wall thickness.
Chromium 19.0 to 23.0 19.0 to 21.0 19.00 to 21.00
1.3 The values stated in inch-pound units are to be regarded Molybdenum 4.0 to 5.0 6.0 to 7.0 6.0 to 7.0
Copper 1.0 to 2.0 0.8 to 1.5 0.5 to 1.5
as the standard. The values stated in parentheses are for
Nitrogen . 0.1 to 0.2 0.15 to 0.25
information only.
Iron balance balance balance
2. Referenced Documents
2.1 ASTM Standards:
quent to welding and prior to final annealing, the material shall
B 751 Specification for General Requirements for Nickel
be cold-worked in either the weld metal only or both weld and
2
and Nickel Alloy Welded Tube
base metal.
NOTE 1—The recommended heat treatment shall consist of heating to a
3. Ordering Information
temperature of 1985 to 2100°F (1085 to 1150°C) for UNS N08904 or
3.1 Orders for material to this specification should include
2010 to 2100°F (1100 to 1150°C) for UNS N08925 and UNS N08926,
the following information:
followed by quenching in water or rapid cooling by other means.
3.1.1 Quantity (feet or number of lengths),
4.2 Tube shall be furnished with oxide removed. When
3.1.2 UNS number,
bright annealing is used, descaling is not necessary.
3.1.3 Size (outsize diameter, minimum or average wall
thickness),
5. Chemical Composition
3.1.4 Length (random or specific),
5.1 The material shall conform to the composition limits
3.1.5 Class, and
specified in Table 1. One test is required for each lot as defined
3.1.6 ASTM designation.
in Specification B 751.
3.1.7 Product Analysis—State if required.
5.2 If a product analysis is performed, it shall meet the
3.1.8 Certification—State if a certification or a report of test
chemistry limits prescribed in Table 1, subject to the analysis
results is required.
tolerances of Specification B 751.
3.1.9 Purchaser Inspection—State which tests or inspec-
tions are to be witnessed, if any. Tables 1 and 2
6. Mechanical and Other Properties
4. Materials and Manu
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