1、Designation: B444 161B444 18Standard Specification forNickel-Chromium-Molybdenum-Columbium Alloys(UNS N06625 and UNS N06852) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219) Pipe and Tube1This standard is issued under the fixed designation B444; the number immediately following the designat
2、ion indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by age
3、ncies of the U.S. Department of Defense.1 NOTETable 2 was editorially corrected in August 2016.1. Scope*1.1 This specification2 covers nickel-chromium-molybdenum-columbium alloys (UNS N06625 and UNS N06852) andnickel-chromium-molybdenum-silicon alloy (UNS N06219)3 in the form of cold-worked seamless
4、 pipe and tube. The generalrequirements for pipe and tube are covered by Specification B829.1.1.1 UNS N06625 products are furnished in two grades of different heat-treated conditions:1.1.1.1 Grade 1 (annealed)Material is normally employed in service temperatures up to 1100F (593C).1.1.1.2 Grade 2 (s
5、olution annealed)Material is normally employed in service temperatures above 1100F (593C) whenresistance to creep and rupture is required.NOTE 1Hot-working or reannealing may change properties significantly, depending on working history and temperatures.1.1.2 Alloys UNS N06219 and UNS N06852 are sup
6、plied in the solution annealed condition only.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 The following precautionary cavea
7、t pertains only to the test methods portion, Section 9, of this specification: This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to become familiar with all hazards including those identified in
8、the appropriate Safety Data Sheet (SDS) for thisproduct/material as provided by the manufacturer, to establish appropriate safety safety, health, and healthenvironmentalpractices, and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in
9、accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 AS
10、TM Standards:4B829 Specification for General Requirements for Nickel and Nickel Alloys Seamless Pipe and TubeB880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt AlloysE112 Test Methods for Determining Average Grain SizeG28 Test Methods
11、for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel-Rich, Chromium-Bearing AlloysG48 Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and RelatedAlloys by Use of Ferric ChlorideSolution1 This specification is under the jurisdiction ofASTM Committee
12、 B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved June 1, 2016April 1, 2018. Published June 2016April 2018. Originally approved in 1966. Last previous edition approved in 20112016 asB444 0
13、6 (2011).B444 161. DOI: 10.1520/B0444-16E01.10.1520/B0444-18.2 For ASME Boiler and Pressure Vessel Code applications see related Specification SB-444 in Section II of that Code.3 New designation established in accordance with Practice E527 and SAE J 1086, Practice for Numbering Metals and Alloys (UN
14、S).4 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only
15、 to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versio
16、nof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. General Requirement3.1 Material furnis
17、hed under this specification shall conform to the applicable requirements of Specification B829 unlessotherwise provided herein.4. Ordering Information4.1 Orders for material to this specification shall include information with respect to the following:4.1.1 Alloy name or UNS number,4.1.2 ASTM desig
18、nation,4.1.3 Condition (temper) (see 1.1.1, 1.1.2, Section 6, and Appendix X1 and Appendix X2),4.1.3.1 If neither grade of N06625 is specified, Grade 1 will be supplied.4.1.4 Finish (See Appendix X2),4.1.5 Dimensions:4.1.5.1 TubeSpecify outside diameter and nominal or minimum wall,4.1.5.2 PipeSpecif
19、y standard pipe size and schedule,4.1.5.3 LengthCut to length or random,4.1.6 QuantityFeet (or metres) or number of pieces,4.1.7 Hydrostatic Test or Nondestructive Electric TestSpecify type of test (see 6.2),4.1.8 Hydrostatic Pressure RequirementsSpecify test pressure if other than required by 9.1.1
20、,4.1.9 CertificationState if certification is required,4.1.10 Samples for Product (Check) AnalysisState whether samples for product (check) analysis should be furnished (see 5.2),4.1.11 Purchaser InspectionIf purchaser wishes to witness tests or inspection of material at place of manufacture, the pu
21、rchaseorder must so state indicating which tests or inspections are to be witnessed, and4.1.12 Small-Diameter and Light-Wall Tube (Converter Sizes)See Appendix X1 and Table 1.4.1.13 Supplementary Ordering Requirements: Grain Size Test (S1): Intergranular Corrosion Test (S2); Pitting and CreviceCorro
22、sion Test (S3) may be ordered as an option by the purchaser in the purchase order indicating which tests are to be included.5. Chemical Composition5.1 The material shall conform to the composition limits specified in Table 2. One test is required for each lot as defined inSpecification B829.5.2 If a
23、 product (check) analysis is performed by the purchaser, the material shall conform to the product (check) analysisvariations in Table 21 of Specification B829B880.6. Mechanical Properties and Other Requirements6.1 Tension TestThe material shall conform to the tensile properties specified in Table 1
24、. The sampling and specimenpreparation are as covered in Specification B829.TABLE 1 Room Temperature Tensile Properties and HeatTreatment Including Small Diameter and Light-Wall Tubing(Converter Sizes)A,BConditionTensileStrength,min, ksi(MPa)CYieldStrength(0.2 %offset),min, ksi(MPa)CElongationin2 in
25、.or 50.8 mm(or 4 D),min, %Alloy N06625Grade 1 (annealed)D 120 (827) 60 (414) 30Grade 2 (solution annealed)E 100 (690) 40 (276) 30Alloy N06219All (solution annealed) 96 (660) 39 (270) 30Alloy N06852All (solution annealed) 85 (586) 35 (241) 30A Not applicable to outside diameters under 18 in. (3.2 mm)
26、 and to wall thicknessesunder 0.015 in. (0.38 mm).B Hot forming quality pipe and tubing is furnished to chemical requirements andsurface inspection only. No tensile properties are required.C The minimum strength values apply only to tubing in straight lengths.D Annealed at 1600F (871C) minimum.E Sol
27、ution annealed at 2000F (1093C) minimum, with or without subsequentstabilization anneal at 1800F (982C) minimum to increase resistance tosensitization.B444 1826.2 Hydrostatic or Nondestructive Electric TestEach pipe or tube shall be subjected to either the hydrostatic test or to thenondestructive el
28、ectric test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in thepurchase order.7. Dimensions and Permissible Variations7.1 Permissible variations for material specified as small-diameter and light-wall tube (converter size) shall conform to thepe
29、rmissible variations prescribed in Table X1.1 and Table X1.2.8. Number of Tests8.1 Chemical AnalysisOne test per lot.8.2 TensionOne test per lot.8.3 Hydrostatic or Nondestructive Electric TestEach piece in each lot.9. Test Methods9.1 Hydrostatic TestEach pipe or tube with an outside diameter 18 in.
30、(3 mm) and larger and with wall thickness of 0.015 in.(0.38 mm) and over shall be tested in accordance with Specification B829. The allowable fiber stress for material in the conditionfurnished, is as follows:UNS N06625:Grade 130 000 psi (207 MPa)UNS N06625:Grade 225 000 psi (172 MPa)UNS N06219:All2
31、4 000 psi (165 MPa)UNS N06852:All21 000 psi (145 MPa)Grade 130 000 psi (207 MPa)Grade 225 000 psi (172 MPa)UNS N06219:All24 000 psi (165 MPa)UNS N06852:All21 000 psi (145 MPa)9.1.1 When so agreed upon by the manufacturer and purchaser, pipe or tube may be tested to 112 times the allowable fiber stre
32、ssgiven above.9.1.2 If any pipe or tube shows leak during hydrostatic testing, it shall be rejected.9.2 Nondestructive Electric TestEach pipe or tube shall be examined with a nondestructive electric test as per prescribed inSpecification B829.TABLE 2 Chemical RequirementsElement Composition Limits,
33、%N06852 N06625 N06219Carbon 0.05 max 0.10 max 0.05 maxManganese 0.50 max 0.50 max 0.50 maxSilicon 0.50 max 0.50 max 0.70-1.10Phosphorus 0.015 max 0.015 max 0.020 maxSulfur 0.015 max 0.015 max 0.010 maxChromium 20.0-23.0 20.0 min 18.0-22.0. 23.0 max .Columbium + tantalum . 3.15 min . 4.15 max .Columb
34、ium 0.51-1.00 . .Cobalt (if determined) . 1.0 max 1.0 maxMolybdenum 8.0-10.0 8.0 min 7.0-9.010.0 max .Iron 15.0-20.0 5.0 max 2.0-4.0Aluminum 0.40 max 0.40 max 0.50 maxTitanium 0.40 max 0.40 max 0.50 maxCopper . . 0.50 maxNickelA Bal. 58.0 min Bal.A Element shall be determined arithmetically by diffe
35、rence.B444 18310. Keywords10.1 seamless pipe; seamless tube; N06219; N06625SUPPLEMENTARY REQUIREMENTSOne or more of the following supplementary requirements shall apply only when specified in thepurchase order. The purchaser may specify a different frequency of test or analysis than is providedin th
36、e supplementary requirement. Subject to agreement between the purchaser and manufacturer,retest and retreatment provisions of these supplementary requirements may also be modified.S1. Grain Size TestS1.1 Grain SizeGrain size determinations shall be made in accordance with Test Methods E112 using an
37、intercept procedureor using a procedure agreed upon by purchaser and seller. Alloys UNS N06625; UNS N06852; UNS N06219 shall be 5.0 or fineraverage Grain size. Grain size determinations shall be made on each heat treatment lot. In the event of a dispute or question anE112 intercept procedure or test
38、 method must be used.S.2 Intergranular Corrosion TestS2.1 Intergranular Corrosion DeterminationsSusceptibility to Intergranular Corrosion shall be tested in accordance with TestMethods G28 Method A with an acceptance criteria of a maximum corrosion rate of 0.003 ipm(0.914 mmyr.).S3. Pitting and Crev
39、ice Corrosion TestS3.1 Susceptibility to pitting corrosion shall be tested in accordance with Test Methods G48 Method C. The test temperatureshall be 75C (167F) 6 1C and the exposure time 72 h. The acceptance criteria shall be no visible pitting greater than 0.001-in.(.025-mm) depth at 20 magnificat
40、ion and a weight loss less than 1.0 g/m2 (1.422 10-6 lb/in2). End grain or edge grain attacksinvalidate the tests. In the event the test is invalidated, a retest of the material may be made without penalty. If the material isinvalidated by the retest, then the material is deemed unacceptable and may
41、 no longer be tested, and a new material test shall bemade from a different heat treatment lot.APPENDIXES(Nonmandatory Information)X1. CONVERTER SIZESX1.1 Small-diameter and light-wall tube in outside diameters 114 in. (31.8 mm) and under may be furnished in a limited rangeof sizes and the manufactu
42、rer should be consulted as to the various outside diameters and wall thicknesses that may be furnished.Material will have a bright finish. Such material shall conform to the requirements in Tables X1.1 and X1.2.B444 184X2. CONDITIONS AND FINISHES NORMALLY SUPPLIEDX2.1 ScopeX2.1.1 This appendix lists
43、 the conditions and finishes in which pipe and tube (other than converter sizes) are normally supplied.These are subject to change, and the manufacturer should be consulted for the latest information available.X2.2 Cold-Worked Tube and PipeX2.2.1 ColdDrawn, Annealed or Solution Annealed with Ground
44、Outside DiameterThe inside diameter may have a brightfinish when material is annealed or solution annealed in a protective atmosphere; otherwise, the inside diameter is supplieddescaled as necessary. It is available in sizes 12 to 4 in. (12.7 to 102 mm), incl, in outside diameter in both normal and
45、heavy-walltube, and pipe sizes, all schedules, of corresponding outside-diameter dimensions.X2.2.2 ColdDrawn, Annealed or Solution Annealed and Pickled (Not Ground)Outside and inside diameter will have dull,matte (pickled) surfaces.Available in sizes 12 to 658 in. (12.7 to 168 mm), incl, in outside
46、diameter in both normal and heavy-walltube, and pipe sizes, all schedules, of corresponding outside-diameter dimensions.TABLE X1.1 Permissible Variations for Small-Diameter and Light-Wall Tube (Converter Sizes)A,B,C,D,E,F,GSpecified Outside Diameter, in. (mm)Outside Diameter Inside Diameter Wall Thi
47、ckness, %Plus Minus, in.(mm) Plus Minus Plus MinusUnder 332 (2.4)332 to 316 (2.4 to 4.8), excl0.002 (0.05)0.003 (0.08)00000.002 (0.05)0.003 (0.08)10101010316 to 12 (4.8 to 12.7), excl 0.004 (0.10) 0 0 0.004 (0.10) 10 1012 to 114 (12.7 to 31.8), incl 0.005 (0.13) 0 0 0.005 (0.13) 10 10A Ovality, Norm
48、al-Wall TubeOvality will be held within 2 % of the theoretical average outside diameter.B Ovality, Light-Wall TubeOvality will be held within 3 % of the theoretical average outside diameter.C Wall Tolerances, Light-Wall TubeThe plus and minus wall tolerance shown in the table shall apply down to and
49、 including 0.005 in. (0.13 mm) in wall thickness. Forwall thicknesses less than 0.005 in. (0.13 mm), the tolerance shall be 0.0005 in. (0.013 mm).D Random Lengths:Where nominal random lengths on tubing 18 in. (3.2 mm) and larger in outside diameter are specified, a length tolerance of 312 ft (1.07 m) applies to the nominal length.This is a total spread of 7 ft (2.13 m).Random lengths in sizes 18 in. (3.2 mm) and larger in outside diameter shall be subject to a length range of 5 to 24 ft (1.52 to 7.
