ASTM B677-99
(Specification)Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Seamless Pipe and Tube
Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Seamless Pipe and Tube
SCOPE
1.1 This specification covers UNS N08904, UNS N08925, and UNS N08926* seamless, cold-worked or hot-finished pipe and tube intended for general corrosive service.
1.2 The values stated in inch-pound units are to be regarded as the standard.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 677 – 99
Standard Specification for
UNS N08904, UNS N08925, and UNS N08926 Seamless Pipe
and Tube
This standard is issued under the fixed designation B 677; 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.
1. Scope 4.1.1 Alloy name or UNS number.
4.1.2 ASTM designation and year of issue.
1.1 This specification covers UNS N08904, UNS N08925,
4.1.3 Finish.
and UNS N08926* seamless, cold-worked or hot-finished pipe
4.1.4 Dimensions:
and tube intended for general corrosive service.
4.1.4.1 Tube—Outside diameter and the average or mini-
1.2 The values stated in inch-pound units are to be regarded
mum wall thickness.
as the standard.
4.1.4.2 Pipe—Standard pipe size and schedule (Appendix
2. Referenced Documents X1).
4.1.4.3 Length, (cut to length or random).
2.1 ASTM Standards:
4.1.5 Quantity (feet or number of pieces).
A 450/A450M Specification for General Requirements for
4.1.6 Nondestructive Testing (see 7.2):
Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
4.1.6.1 Pressure Requirements—Test pressure if other than
E 8 Test Methods for Tension Testing of Metallic Materials
required by 7.2.1.
E 29 Practice for Using Significant Digits in Test Data to
4.1.6.2 Specify if an electric test is to be performed (see
Determine Conformance with Specifications
7.2.2).
E 354 Test Methods for Chemical Analysis of High-
4.1.7 Ends—Plain ends cut and deburred will be furnished.
Temperature, Electrical, Magnetic, and Other Similar Iron,
If threaded ends or ends beveled for welding are desired, give
Nickel, and Cobalt Alloys
details.
3. Terminology Definitions
4.1.8 Certification— State if certification is required (Sec-
tion 16).
3.1 average diameter—the average of the maximum and
4.1.9 Samples for Product (Check) Analysis—State whether
minimum outside diameters as determined at any one cross
samples for product (check) analysis should be furnished (see
section of the tube or pipe.
6.2).
3.2 pipe—seamless tube conforming to the particular di-
4.1.10 Purchaser Inspection—If the purchaser wishes to
mensions commercially known as standard pipe sizes (Appen-
witness tests or inspection of material at the place of manu-
dix X1).
facture, the purchase order must so state, indicating which tests
3.3 tube—a hollow product of round or any other cross
or inspections are to be witnessed (Section 14).
section having a continuous periphery.
5. Materials and Manufacture
4. Ordering Information
5.1 The material shall be supplied in the solution-treated
4.1 Orders for materials under this specification shall in-
condition.
clude the following information:
NOTE 1—The recommended heat treatment shall consist of heating to a
temperature of 1950 to 2100°F (1065 to 1150°C) for UNS N08904 or
This specification is under the jurisdiction of ASTM Committee B-2 on
2010 to 2100°F (1100 to 1150°C) for UNS N08925 and UNS N08926,
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
followed by quenching in water or rapid cooling by other means.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved May 10, 1999. Published June 1999. Originally
6. Chemical Composition
published as B 677 – 80. Last previous edition B 677 – 97.
* New designation established in accordance with ASTM E 527 and SAE J1086,
6.1 The material shall conform to the requirements as to
Recommended Practice for Numbering Metals and Alloys (UNS).
chemical composition prescribed in Table 1.
Annual Book of ASTM Standards, Vol 01.01.
Annual Book of ASTM Standards, Vol 03.01.
Annual Book of ASTM Standards, Vol 14.02.
Annual Book of ASTM Standards, Vol 03.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 677
TABLE 1 Chemical Requirements
Product (Check) Analysis Variations, under min or
over max of the Specified Limit of Element, %
Element UNS N08904 UNS N08925 UNS N08926
UNS N08904
UNS N08926
UNS N08925
Carbon, max 0.020 0.020 0.020 0.005 0.005
Manganese, max 2.0 1.0 2.00 0.04 0.04
Phosphorus, max 0.045 0.045 0.03 0.005 0.005
Sulfur, max 0.035 0.030 0.01 0.005 0.003
Silicon, max 1.00 0.50 0.5 0.05 0.03
Nickel 23.0 to 28.0 24.0 to 26.0 24.00 to 26.00 0.20 0.25
Chromium 19.0 to 23.0 19.0 to 21.0 19.00 to 21.00 0.20 0.25
Molybdenum 4.0 to 5.0 6.0 to 7.0 6.0 to 7.0 0.10 0.15
Copper 1.0 to 2.0 0.8 to 1.5 0.5 to 1.5 0.10 0.04
Nitrogen . 0.1 to 0.2 0.15 to 0.25 . 0.01
A
Iron balance balance balance . .
6.2 If a product (check) analysis is performed by the 7.2.1.4 When so agreed upon between the manufacturer and
purchaser, the material shall conform to the product (check) the purchaser, pipe or tube may be tested to one and one-half
analysis variations prescribed in Table 1. times the allowable fiber stress given in 7.2.1.
7.2.2 When specified by the purchaser, a nondestructive
7. Mechanical Properties and Other Requirements
electric test in accordance with Specification A 450/A 450M
may be used instead of or in addition to the hydrostatic test.
7.1 Mechanical Properties—The material shall conform to
the mechanical properties prescribed in Table 2.
8. Dimensions and Permissible Variations
7.2 Nondestructive Tests:
Each pipe and tube shall be subjected to either a hydrostatic
8.1 Diameter and Wall Thickness—The permissible varia-
test or a nondestructive electric test in accordance with
tions in the outside diameter and wall thickness of pipe and
specification A 450/A 450M, at the manufacturer’s option. The
tube shall not exceed those prescribed in Table 3.
purchaser may specify which test is to be used.
8.2 Length—When pipe or tube is ordered cut-to-length, the
7.2.1 Hydrostatic Test:
length shall not be less than that specified, but a variation
7.2.1.1 Each pipe or tube with an outside diameter ⁄8 in.
of + ⁄8in. (3.2 mm) will be permitted, except that for lengths
(3.2 mm) and larger and with wall thickness of 0.015 in. (0.38 1
over 30 ft (9.1 m), a variation of + ⁄4in. (6.4 mm) will be
mm) and over shall be tested by the manufacturer to an internal
permitted.
hydrostatic pressure of 1000 psi (6.9 MPa) provided that the
8.3 Straightness— Material shall be reasonably straight and
fiber stress calculated in accordance with the following equa-
free of bends and kinks.
tion does not exceed the allowable fiber stress, S, indicated
below:
9. Workmanship, Finish, and Appearance
P 5 2St/D (1)
9.1 The material shall be uniform in quality and temper,
smooth, commercially straight, and free of injurious imperfec-
where:
tions.
P = hydrostatic test pressure, psi (or MPa),
S = allowable fiber stress for material in the condition
10. Sampling
(temper) furnished, 20 000 psi (138 MPa),
10.1 Lot—Definition:
t = minimum wall thickness, in. (or mm); equal to the
specified average wall minus the permissible “minus” 10.1.1 A lot for chemical analysis shall consist of one heat.
10.1.2 A lot for mechanical properties testing shall consist
wall tolerance, Table 3, or the specified minimum wall
thickness, and of all material from the same heat, nominal size (excepting
D = outside diameter of the tube, in. (or mm). length), and condition (temper).
7.2.1.2 The test pressure shall be held for a minimum of 5 s. 10.2 Test Material Selection:
7.2.1.3 Visual examination is to be made when the material 10.2.1 Chemical Analysis—Representative samples shall be
is under pressure. The full length of material must be examined taken during pouring or subsequent processing from each lot.
for leaks. If any pipe or tube shows leaks during the hydrostatic 10.2.1.1 Product (Check) Analysis shall be wholly the re-
test, it shall be rejected. sponsibility of the purchaser.
TABLE 2 Mechanical Properties of Pipe and Tube
Tensile Strength, Yield Strength, 0.2 % Elongation in 2 in. or
Alloy Temper
min, psi (MPa) offset, min, psi (MPa) 50 mm (or 4D), min, %
UNS N08904 solution annealed 71 (490) 31 (220) 35
UNS N08925 solution annealed 87 (600) 43 (300) 40
UNS N08926 solution annealed 94 (650) 43 (295) 35
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 677
TABLE 3 Permissible Variations for Outside Diameter and Wall Thickness
NOTE 1—Ovality—The permissible variations in this table apply to individual measurements, including out-of-roundness (ovality) except for the
following:
(1) Pipe and tube having a nominal wall thickness of 3 % or less of the nominal outside diameter. The mean outside di
...
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