ASTM B751-08(2013)
(Specification)Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
ABSTRACT
This general specification contains the mandatory requirements to the ASTM standards listed herein for longitudinally welded tubular products made from nickel and nickel alloys. In case of conflict, the requirements listed in the particular product specification takes precedence over those listed here.
SCOPE
1.1 This specification contains various requirements that, with the exception of Sections 6 and 7, are mandatory requirements to the following ASTM nickel and nickel alloy, longitudinally welded tubular product specifications:
Title of Specification
ASTM
Designation
Welded UNS N08020, N08024, and UNS N08026 Alloy Tubes
B468
Welded UNS N08120, UNS N08800, UNS N08810, UNS N08811 Alloy Tubes
B515
Welded Nickel-Chromium-Iron Alloy (UNS N06600, UNS N06603, UNS N06025, and UNS N06045) Tubes
B516
Welded Nickel and Nickel-Cobalt Alloy Tube
B626
UNS N08904, UNS N08925, and UNS N08926 Welded Tube
B674
UNS N08366 and UNS N08367 Welded Tube
B676
Welded UNS N06625, N06219, and N08825 Alloy Tubes
B704
Ni-Cr-Mo-Co-W-Fe-Si Alloy (UNS N06333) Welded Tube
B726
Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) Tube
B730
1.2 One or more of the test requirements of Section 6 apply only if specifically stated in the product specification or in the purchase order.
1.3 In case of conflict between a requirement of the product specification and a requirement of this general specification, only the requirement of the product specification need be satisfied.
1.4 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.
1.5 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 Permissible Variations for Outside Diameter and Wall Thickness of Welded TubeA,B
Specified Outside Diameter
Outside Diameter
Permissible Variations
of Thickness of
Specified Nominal Wall, %
Thickness of
Specified Minimum Wall,%
in. (mm)
+
−
+
−
+
−
Over 0.125 (3.2) to 5/8 (16), excl
0.004 (0.13)
0.005 (0.10)
12.5
12.5
28
0
5/8 (16) to 11/2 (38), incl
0.0075 (0.19)
0.0075 (0.19)
12.5
12.5
28
0
Over 11/2 (38) to 3 (76), incl
0.010 (0.25)
0.010 (0.25)
12.5
12.5
28
0
Over 3 (76) to 41/2 (114), incl
0.015 (0.38)
0.015 (0.38)
12.5
12.5
28
0
Over 41/2 (114) to 6 (152), incl
0.020 (0.51)
0.020 (0.51)
12.5
12.5
28
0 A These permissible variations in outside diameter apply only to material as finished at the mill before subsequent swaging, expanding, bending, polishing, or other fabricating operations.B The ovality provisions of 4.1 apply.
General Information
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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:B751 −08 (Reapproved 2013)
Standard Specification for
General Requirements for Nickel and Nickel Alloy Welded
Tube
This standard is issued under the fixed designation B751; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This specification contains various requirements that, 2.1 ASTM Standards:
with the exception of Sections 6 and 7, are mandatory B468 Specification for Welded UNS N08020 Alloy Tubes
requirements to the following ASTM nickel and nickel alloy, B515 Specification forWelded UNS N08120, UNS N08800,
longitudinally welded tubular product specifications: UNS N08810, and UNS N08811 Alloy Tubes
B516 SpecificationforWeldedNickel-Chromium-IronAlloy
ASTM
Title of Specification
Designation
(UNS N06600, UNS N06603, UNS N06025, and UNS
Welded UNS N08020, N08024, and UNS N08026 Alloy Tubes B468
N06045) Tubes
Welded UNS N08120, UNS N08800, UNS N08810, UNS B515
B626 Specification for Welded Nickel and Nickel-Cobalt
N08811 Alloy Tubes
Welded Nickel-Chromium-Iron Alloy (UNS N06600, UNS B516
Alloy Tube
N06603, UNS N06025, and UNS N06045) Tubes
B674 Specification for UNS N08925, UNS N08354, and
Welded Nickel and Nickel-Cobalt Alloy Tube B626
UNS N08926 Welded Tube
UNS N08904, UNS N08925, and UNS N08926 Welded Tube B674
UNS N08366 and UNS N08367 Welded Tube B676
B676 Specification for UNS N08367 Welded Tube
Welded UNS N06625, N06219, and N08825 Alloy Tubes B704
B704 Specification for Welded UNS N06625, UNS N06219
Ni-Cr-Mo-Co-W-Fe-Si Alloy (UNS N06333) Welded Tube B726
and UNS N08825 Alloy Tubes
Welded Nickel (UNS N02200/UNS N02201) and Nickel Cop- B730
per Alloy (UNS N04400) Tube
B726 Specification for Nickel-Chromium-Molybdenum-
1.2 One or more of the test requirements of Section 6 apply Cobalt-Tungsten-Iron-Silicon Alloy (UNS N06333)
Welded Tube
only if specifically stated in the product specification or in the
purchase order. B730 Specification for Welded Nickel (UNS N02200/UNS
N02201) and Nickel Copper Alloy (UNS N04400) Tube
1.3 In case of conflict between a requirement of the product
B880 Specification for General Requirements for Chemical
specification and a requirement of this general specification,
Check Analysis Limits for Nickel, Nickel Alloys and
only the requirement of the product specification need be
Cobalt Alloys
satisfied.
E8 Test Methods for Tension Testing of Metallic Materials
1.4 The values stated in inch-pound units are to be regarded
E18 Test Methods for Rockwell Hardness of Metallic Ma-
as standard. The values given in parentheses are mathematical
terials
conversions to SI units that are provided for information only
E29 Practice for Using Significant Digits in Test Data to
and are not considered standard.
Determine Conformance with Specifications
1.5 This standard does not purport to address all of the E39 Methods for Chemical Analysis of Nickel (Withdrawn
safety concerns, if any, associated with its use. It is the 1995)
responsibility of the user of this standard to become familiar E76 Test Methods for Chemical Analysis of Nickel-Copper
with all hazards including those identified in the appropriate Alloys (Withdrawn 2003)
Material Safety Data Sheet (MSDS) for this product/material E112 Test Methods for Determining Average Grain Size
as provided by the manufacturer, to establish appropriate E213 Practice for Ultrasonic Testing of Metal Pipe and
safety and health practices, and determine the applicability of Tubing
regulatory limitations prior to use. E273 Practice for Ultrasonic Testing of the Weld Zone of
1 2
This specification is under the jurisdiction of ASTM Committee B02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
B02.07 on Refined Nickel and Cobalt and Their Alloys. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Feb. 1, 2013. Published February 2013. Originally the ASTM website.
approved in 1985. Last previous edition approved in 2008 as B751 – 08. DOI: The last approved version of this historical standard is referenced on
10.1520/B0751-08R13. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B751−08 (2013)
A,B
TABLE 1 Permissible Variations for Outside Diameter and Wall Thickness of Welded Tube
Permissible Variations
Thickness of
Specified Outside Diameter Outside Diameter of Thickness of
Specified Minimum Wall,%
Specified Nominal Wall, %
in. (mm) + − + − + −
Over 0.125 (3.2) to ⁄8 (16), excl 0.004 (0.13) 0.005 (0.10) 12.5 12.5 28 0
5 1
⁄8 (16) to 1 ⁄2 (38), incl 0.0075 (0.19) 0.0075 (0.19) 12.5 12.5 28 0
Over 1 ⁄2 (38) to 3 (76), incl 0.010 (0.25) 0.010 (0.25) 12.5 12.5 28 0
Over 3 (76) to 4 ⁄2 (114), incl 0.015 (0.38) 0.015 (0.38) 12.5 12.5 28 0
Over 4 ⁄2 (114) to 6 (152), incl 0.020 (0.51) 0.020 (0.51) 12.5 12.5 28 0
A
These permissible variations in outside diameter apply only to material as finished at the mill before subsequent swaging, expanding, bending, polishing, or other
fabricating operations.
B
The ovality provisions of 4.1 apply.
A
TABLE 2 Permissible Variations in Length
Welded Pipe and Tubing
Outside Diameter, in. (mm) Cut Length, in. (mm)
E309 Practice for Eddy-Current Examination of Steel Tubu-
Over Under
lar Products Using Magnetic Saturation
Cold-finished: under 2 (50.8) ⁄8 (3.2) 0
Hot-finished: 2 (50.8) and over ⁄16 (4.8) 0
E426 PracticeforElectromagnetic(Eddy-Current)Examina-
all sizes ⁄16 (4.8) 0
tion of Seamless and Welded Tubular Products, Titanium,
A
These permissible variations in length apply to tube in straight lengths. They
Austenitic Stainless Steel and Similar Alloys
apply to cut lengths up to and including 24 ft (7.3 m). For lengths over 24 ft an
E571 PracticeforElectromagnetic(Eddy-Current)Examina-
additionalover-toleranceof ⁄8in.(3.2mm)foreach10ft(3.0m)orfractionthereof
tion of Nickel and Nickel Alloy Tubular Products shallbepermissibleuptoamaximumadditionalover-toleranceof ⁄2in.(12.7mm).
E1473 Test Methods for Chemical Analysis of Nickel,
Cobalt, and High-Temperature Alloys
2.2 Other Documents:
SNT-TC-1A RecommendedPracticeforNondestructivePer-
4.4 Ends—Ends shall be plain or cut and deburred.
sonnel Qualification and Certification
5. Workmanship, Finish, and Appearance
3. Terminology
5.1 The material shall be uniform in quality and temper,
3.1 Definitions:
smooth, and free of imperfections that would render it unfit for
3.1.1 averagediameter,n—theaverageofthemaximumand
use.
minimum outside diameters, as determined at any one cross
section of the tube.
6. Test Requirements
3.1.2 nominalwall,n—aspecifiedwallthicknesswithaplus
6.1 Flange Test:
and minus tolerance from the specified thickness.
6.1.1 Alength of tube not less than three times the specified
3.1.3 thin wall tube, n—tube with specified wall thickness
diameter or 4 in. (102 mm), whichever is longer, shall be
3 % or less of the specified outside diameter.
capable of having a flange turned over at a right angle to the
3.1.4 welded tube, n—a hollow product of round or any body of the tube without cracking or showing imperfections
rejectable under the provisions of the product specification.
other cross section having a continuous periphery.
The width of the flange shall not be less than 15 % of the tube
4. Dimensions and Permissible Variations
diameter.
6.1.2 The flanged specimen shall not exhibit through wall
4.1 Diameter and Wall Thickness—Individual measure-
cracking or any cracking observable without magnification.
ments shall not exceed the tolerances specified in Table 1. The
permissible variation in outside diameter is not sufficient to
6.2 Flattening Test:
provide for ovality in thin-walled tubes. For thin-walled tubes
6.2.1 Alength of tube not less than 4 in. (102 mm), shall be
the maximum and minimum diameters at any cross section
flattened under a load applied gradually at room temperature
shallnotdeviatefromthenominaldiameterbymorethantwice
until the distance between the platens is five times the wall
the permissible variation in outside diameter given in the table;
thickness. The weld shall be positioned 90° from the direction
however, the mean diameter at that cross section must still be
of the applied flattening force.
within the permissible variation.
6.2.2 The flattened specimen shall not exhibit cracks.
6.2.3 Superficial ruptures resulting from surface imperfec-
4.2 Length—When material is ordered cut-to-length, the
tions shall not be a cause for rejection.
length shall conform to the permissible variations prescribed in
Table 2.
6.3 Flare Test—The flare test shall consist of flaring a test
specimen with an expanding tool having an included angle of
4.3 Straightness—Material shall be reasonably straight and
60° until the specified outside diameter has been increased by
free of bends and kinks.
30 %. The flared specimen shall not exhibit cracking through
the wall.
AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org. 6.4 Pressure (Leak Test):
B751−08 (2013)
6.4.1 Hydrostatic—Each tube with an outside diameter ⁄8 reference notches specified in 6.5.8. The examination may not
in. (3 mm) and larger, and with wall thickness of 0.015 in. detect circumferentially oriented imperfections or short, deep
(0.38 mm) and over, shall be tested by the manufacturer to a defects.
minimum internal hydrostatic pressure of 1000 psi (6.9 MPa) 6.5.2.3 The eddy current examination referenced in this
provided that the fiber stress calculated in accordance with the specification has the capability of detecting significant
following equation does not exceed the allowable fiber stress, discontinuities, especially of the short abrupt type. Practices
S, indicated as follows: E309 and E426 contain additional information regarding the
capabilities and limitations of eddy-current examination.
P 5 2St/D (1)
6.5.2.4 The hydrostatic test referred to in 6.4.1 is a test
where:
method provided for in many product specifications. This test
P = hydrostatic test pressure, psi (MPa), hasthecapabilityoffindingdefectsofasizepermittingthetest
S = allowable fiber stress, for material in the condition
fluid to leak through the tube wall and may be either visually
(temper) furnished as specified in the product specifi-
seen or detected by a loss of pressure. This test may not detect
cation (S is calculated as the lower of ⁄3 of the specified
very tight, through-the-wall defects or defects that extend an
minimum 0.2 % offset yield strength or ⁄4 of the
appreciable distance into the wall without complete penetra-
specified minimum ultimate strength for the material),
tion.
t = minimum wall thickness, in. (mm), equal to the speci-
6.5.2.5 A purchaser interested in ascertaining the nature
fied average wall minus the permissible minus wall
(type, size, location, and orientation) of discontinuities that can
tolerance, or the specified minimum wall thickness, and
be detected in the specific application of these examinations
D = outside diameter of the tube, in. (mm).
should discuss this with the manufacturer of the tubular
products.
6.4.1.1 Thetestpressureshallbeheldforasufficienttimeto
6.5.3 Time of Examination: Nondestructive examination for
permit the entire length of the tube to be inspected.
specification acceptance shall be performed after all deforma-
6.4.2 Pneumatic (Air Underwater) Test—Each tube with a
tion processing, heat treating, welding, and straightening op-
nominal wall thickness exceeding 0.025 in. (0.64 mm) shall be
erations. This requirement does not preclude additional testing
tested at a minimum pressure of 150 psi (1.05 MPa). The test
at earlier stages in the processing.
pressure for tubes having a nominal wall thickness of 0.025 in.
6.5.4 Surface Condition:
(0.64mm)andundershallbe75psi(0.52MPa)minimum.The
6.5.4.1 All surfaces shall be free of scale, dirt, grease, paint,
test pressure shall be held for a minimum of 5 s. Visual
orotherforeignmaterialthatcouldinterferewithinterpretation
examination is to be made when the material is submerged and
oftestresults.Themethodsusedforcleaningandpreparingthe
under pressure. The full length of material must be examined
surfaces for examination shall not be detrimental to the base
for leaks.
metal or the surface finish.
6.4.3 If any tube shows leaks during hydrostatic or pneu-
6.5.4.2 Excessive surface roughness or deep scratches can
matic testing, it shall be rejected.
produce signals that interfere with the test.
6.5 Nondestructive Examination:
6.5.5 Extent of Examination:
6.5.1 Each tube shall be examined by a nondestructive
6.5.5.1 The relative motion of the tube and the
examination method in accordance with Practices E213, E309,
transducer(s), coil(s), or sensor(s) shall be such that the entire
E426,or E571. Upon agreement, Practice E273 shall be
tube surface is scanned, except for end effects as noted in
employed in addition to one of the full periphery tests. The
6.5.5.2.
range of tube sizes that may be examined by each method shall
6.5.5.2 The existence of end effects is recognized, and the
be subject to the limitations in the scope of that practice. In
extent of such effects shall be determined by the manufacturer,
case of conflict between these methods and practices and this
and, if requested, shall be reported to the purchaser. Other
specification, the requirements of this specification shall pre-
nondestructive tests may be applied to the end areas, subject to
vail
agreement between the purchaser and the manufacturer.
6.5.2 Thefollowinginformationisforthebenefitoftheuser
6.5.6 Operator Qualifications:
of this specification.
6.5.6.1 Thetestunitoperatorshallbecertifiedinaccordance
6.5.2.1 Calibration standards for the nondestructive electric
with SNT-TC-1A, or an equivalent documented standard
test are convenient standards for calibration of nondestructive
agreeable to both purchaser and manufacturer.
testing equipment only. For several reasons, including shape,
6.5.7 Test Conditions:
orientation, width, etc., the correlation between the signal
6.5.7.1 For examination by the ultrasonic method, the mini-
produced in the electric test from an imperfection and from
mum nominal transducer frequency shall be 2.0 MHz, and the
calibration standards is only approximate. A purchaser inter-
maximum transducer size shall be 1.5 in. (38 mm).
es
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