ASTM B804-96
(Specification)Standard Specification for UNS N08367 and UNS N08926 Welded Pipe
Standard Specification for UNS N08367 and UNS N08926 Welded Pipe
SCOPE
1.1 This specification covers UNS N08367 and UNS N08926 welded pipe for general corrosion applications. (Although no restrictions are placed on the sizes of pipe that may be furnished under this specification, commercial practice is commonly limited to sizes not less than 8 in. nominal diameter.)
1.2 Six classes of pipe are covered as follows:
1.2.1 Class 1 pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed.
1.2.2 Class 2 pipe shall be double welded by processes employing filler metal in all passes. No radiography is required.
1.2.3 Class 3 pipe shall be double welded by processes employing filler metal in all passes except the inside root weld may be made without the addition of filler metal. Welds are to be completely radiographed.
1.2.4 Class 4 pipe shall be double welded by processes employing filler metal in all passes except the inside root weld may be made without the addition of filler metal. No radiography is required.
1.2.5 Class 5 pipe shall be single welded by processes employing filler metal in all passes except that the pass exposed to the inside pipe surface may be made without the addition of filler metal. Welds are to be completely radiographed.
1.2.6 Class 6 pipe shall be single welded by processes employing filler metal in all passes except that the pass exposed to the inside pipe surface may be made without the addition of filler metal. No radiography is required.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 12, of this standard: 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 804 – 96
Standard Specification for
UNS N08367 and UNS N08926 Welded Pipe
This standard is issued under the fixed designation B 804; 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 of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
1.1 This specification covers UNS N08367 and UNS
tions prior to use.
N08926 welded pipe for general corrosion applications. (Al-
though no restrictions are placed on the sizes of pipe that may
2. Referenced Documents
be furnished under this specification, commercial practice is
2.1 ASTM Standards:
commonly limited to sizes not less than 8 in. nominal diam-
A 262 Practices for Detecting Susceptibility to Intergranu-
eter.)
lar Attack in Austenitic Stainless Steels
1.2 Six classes of pipe are covered as follows:
A 370 Test Methods and Definitions for Mechanical Testing
1.2.1 Class 1 pipe shall be double welded by processes
of Steel Products
employing filler metal in all passes and shall be completely
B 625 Specification for UNS N08904, UNS N08925, UNS
radiographed.
N08031, UNS N08932, UNS N08926, and UNS R20033
1.2.2 Class 2 pipe shall be double welded by processes
Plate, Sheet, and Strip
employing filler metal in all passes. No radiography is re-
B 688 Specification for Chromium-Nickel-Molybdenum-
quired.
Iron (UNS N08366 and UNS N08367) Plate, Sheet, and
1.2.3 Class 3 pipe shall be double welded by processes
Strip
employing filler metal in all passes except the inside root weld
E 8 Test Methods for Tension Testing of Metallic Materials
may be made without the addition of filler metal. Welds are to
E 29 Practice for Using Significant Digits in Test Data to
be completely radiographed.
Determine Conformance with Specifications
1.2.4 Class 4 pipe shall be double welded by processes
E 38 Methods for Chemical Analysis of Nickel-Chromium
employing filler metal in all passes except the inside root weld
and Nickel-Chromium-Iron Alloys
may be made without the addition of filler metal. No radiog-
E 354 Test Methods for Chemical Analysis of High-
raphy is required.
Temperature, Electrical, Magnetic, and Other Similar Iron,
1.2.5 Class 5 pipe shall be single welded by processes
Nickel, and Cobalt Alloys
employing filler metal in all passes except that the pass
E 1019 Test Methods for Determination of Carbon, Sulfur,
exposed to the inside pipe surface may be made without the
Nitrogen, and Oxygen in Steel and in Iron, Nickel, and
addition of filler metal. Welds are to be completely radio-
Cobalt Alloys
graphed.
2.2 ASME Boiler and Pressure Vessel Code:
1.2.6 Class 6 pipe shall be single welded by processes
Section VIII, Division 1 Rules for Construction of Pressure
employing filler metal in all passes except that the pass
Vessels
exposed to the inside pipe surface may be made without the
Section IX Qualification Standard for Welding and Brazing
addition of filler metal. No radiography is required.
Procedures, Welders, Brazers, and Welding and Brazing
1.3 The values stated in inch-pound units are to be regarded
Operators
as the standard. The values given in parentheses are for
2.3 American Welding Society Standards:
information only.
1.4 The following safety hazards caveat pertains only to the
test methods portion, Section 12, of this standard: This stan-
Annual Book of ASTM Standards, Vol 01.03.
dard does not purport to address all of the safety concerns, if
Annual Book of ASTM Standards, Vol 02.04.
any, associated with its use. It is the responsibility of the user
Annual Book of ASTM Standards, Vol 03.01.
Annual Book of ASTM Standards, Vol 14.02.
Discontinued—see 1989 Annual Book of ASTM Standards, Vol 03.05.
1 7
This specification is under the jurisdiction of ASTM Committee B-2 on Annual Book of ASTM Standards, Vol 03.05.
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 03.06.
B02.07 on Refined Nickel and Cobalt, and Alloys Containing Nickel or Cobalt or Available from American Society of Mechanical Engineers, 345 E. 47th St.,
Both as Principal Constituents. New York, NY 10017.
Current edition approved May 10, 1996. Published June 1996. Originally Available from American Welding Society, 550 N.W. Le Jeune Rd., Miami, FL
published as B 804 – 89. Last previous edition B 804 – 93. 33126.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 804
AWS A5.11 Nickel and Nickel Alloy Covered Welded the permissible tolerances in Table 1 of Specification B 688 for
Electrodes UNS N08367 and specified in 5.1 and 5.2 subject to the
AWS A5.14 Nickel and Nickel Alloy Bare Welding Rods permissible tolerances in Table 2 of Specification B 625 for
and Electrodes UNS N08926.
3. Ordering Information 6. Mechanical Properties and Other Requirements
3.1 Orders for material under this specification shall include
6.1 Mechanical Properties:
the following information: 6.1.1 The mechanical properties of the plate shall be in
3.1.1 Quantity (feet or number of lengths), accordance with Table 1. Tension tests made by the plate
3.1.2 Class (see 1.2), manufacturer shall qualify the plate material.
3.1.3 Size (outside diameter and minimum wall thickness), 6.1.2 Transverse tension tests taken across the welded joint
3.1.4 Length (specific or random), shall have the same minimum ultimate tensile strength as the
3.1.5 ASTM specification number, specified minimum ultimate tensile strength of the plate.
3.1.6 Authorization for repair of plate defects by welding 6.2 Transverse Guided Weld Bend Test Requirements—
without prior approval if such is intended (see 8.4), Bends made in accordance with Fig. 1 shall be acceptable if no
3.1.7 Circumferential weld permissibility (see 7.3.2), and cracks or other imperfections exceeding ⁄8 in. (3.2 mm) in any
3.1.8 Supplementary requirements. direction are present in the weld metal or between the weld and
the pipe metal after bending. Cracks that originate along the
4. Materials and Manufacture
edges of the specimen during testing, and that are less than ⁄4
4.1 Materials—The starting material shall conform to the
in. (6.3 mm) measured in any direction, shall not be consid-
requirements of Specification B 688 for UNS N08367 and
ered.
Specification B 625 for UNS N08926.
6.3 Pressure Test—Any pipe that shows leaks during the
4.2 Manufacture:
pressure test conducted in accordance with 12.4 shall be
4.2.1 The joints shall be double or single welded, full
rejected, but any leaking areas may be cut out and the pipe
penetration welds made in accordance with ASME Boiler and
retested as above.
Pressure Vessel Code, Section IX.
6.4 Radiographic Examination—For Classes 1, 3, and 5
4.2.2 The welds shall be made either manually or automati-
pipe, radiographic examination shall be in accordance with the
cally by an electric process involving the deposition of filler requirements of the ASME Boiler and Pressure Vessel Code,
metal according to the class specified.
Section VIII, latest edition, Paragraph UW-51.
4.2.3 The weld surface on either side of the weld shall be
7. Dimensions, Mass, and Permissible Variations
flush with the base plate or shall have a reasonably uniform
crown, not to exceed ⁄8 in. (3.2 mm). Any weld reinforcement 7.1 Permissible variations in dimensions at any point in a
may be removed at the manufacturer’s option or by agreement
length of pipe shall not exceed the following:
between the manufacturer and purchaser. The contour of the 7.1.1 Outside Diameter—Based on circumferential mea-
reinforcement shall be reasonably smooth and free of irregu-
surement, 60.5 % of the nominal outside diameter.
larities. The deposited metal shall be fused uniformly into the
7.1.2 Out-of-Roundness—Differences between major and
plate surface. No concavity of contour is permitted unless the minor outside diameters, 1.0 % of the specified outside diam-
resulting thickness of weld metal is equal to or greater than the
eter.
minimum thickness of the adjacent base metal. 7.1.3 Alignment (Camber)—Using a 10-ft (3-m) straight-
4.2.4 Weld defects shall be repaired by removal to sound
edge placed so that both ends are in contact with the pipe, the
metal and rewelding. Subsequent heat treatment and inspection camber shall not be more than ⁄8in. (3.17 mm).
shall be as required on the original welds.
7.2 Thickness—The minimum wall thickness at any point in
4.3 Heat Treatment—The recommended heat treatment the pipe shall not be more than 0.01 in. (0.25 mm) under the
shall consist of heating to a minimum temperature of 2025°F
nominal thickness.
for UNS N08367 and 2012°F for UNS N08926 followed by 7.3 Lengths:
quenching in water or rapidly cooling by other means.
7.3.1 The lengths required shall be specified in the orders.
7.3.2 Circumferentially welded joints of the same quality as
5. Chemical Composition
the longitudinal joints shall be permitted by agreement between
5.1 The chemical composition of the pipe shall conform to
the manufacturer and the purchaser.
the requirements in Table 1 of Specification B 688 for UNS
N08367 and Table 1 of Specification B 625 for UNS N08926.
TABLE 1 Mechanical Property Requirements
5.2 The alloy content of the deposited weld metal shall
Elongation
Tensile Strength, min Yield Strength, min
conform to that required for the plate or the welding electrodes in 2 in. or
Gage
50.8 mm,
as shown in Specification AWS 5.11 for ENiCrMo-3,
ksi MPa ksi MPa
min, %
ENiCrMo-4, and ENiCrMo-10 or AWS 5.14 fo
...
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