1、Designation: B462 18Standard Specification forForged or Rolled Nickel Alloy Pipe Flanges, Forged Fittings,and Valves and Parts for Corrosive High-TemperatureService1This standard is issued under the fixed designation B462; the number immediately following the designation indicates the year oforigina
2、l 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.1. Scope*1.1 This specification2covers forged or rolled UNSN06030, UNS N06035,
3、 UNS N06022, UNS N06200, UNSN06059, UNS N10362, UNS N06686, UNS N08020, UNSN08367, UNS N10276, UNS N10665, UNS N10675, UNSN10629, UNS N08031, UNS N06045, UNS N06025, UNSN06699, and UNS R200333pipe flanges, forged fittings, andvalves and parts intended for corrosive high-temperature ser-vice.1.2 The
4、values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated w
5、ith its use. It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet (SDS) for this product/material as providedby the manufacturer, to establish appropriate safety, health,and environmental practices, and
6、 determine the applicabilityof regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-men
7、dations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:4A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsB166 Specification for Nickel-Chromium-Iron Alloys (UNSN06600, N06601,
8、 N06603, N06690, N06693, N06025,N06045, and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617), and Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674) Rod, Bar, andWireB335 Specification for Nickel-Molybdenum Alloy RodB408 Specification for Nickel-Iron-Chromium Alloy Rodand BarB472 Specific
9、ation for Nickel Alloy Billets and Bars forReforgingB473 Specification for UNS N08020, UNS N08024, andUNS N08026 Nickel Alloy Bar and WireB574 Specification for Low-Carbon Nickel-Chromium-Molybdenum, Low-Carbon Nickel-Molybdenum-Chromium, Low-Carbon Nickel-Molybdenum-Chromium-Tantalum, Low-Carbon Ni
10、ckel-Chromium-Molybdenum-Copper, and Low-Carbon Nickel-Chromium-Molybdenum-Tungsten Alloy RodB581 Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy RodB649 Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Al-loys (UNS N08925, UNS N08031, UNS N08034, UNSN08354, and UNS N08926), and Cr-Ni-Fe
11、-N Low-CarbonAlloy (UNS R20033) Bar and Wire, and Ni-Cr-Fe-Mo-NAlloy (UNS N08936) WireB691 Specification for Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08367) Rod, Bar, and Wire1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct resp
12、onsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Nov. 1, 2018. Published November 2018. Originallyapproved in 1967. Last previous edition approved in 2015 as B462 15. DOI:10.1520/B0462-18.2For ASME Boiler and Pressure Vessel Code applications se
13、e related Specifi-cation SB-462 in Section II of that Code.3New designation established in accordance with Practice E527 and SAE J1086,Practice for Numbering Metals and Alloys (UNS).4For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.o
14、rg. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*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 StatesT
15、his international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade
16、(TBT) Committee.1B880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)E1473 Test Methods
17、for Chemical Analysis of Nickel, Co-balt and High-Temperature AlloysE1916 Guide for Identification of Mixed Lots of Metals2.2 ANSI Standard:B16.5 Steel Pipe Flanges and Flanged Fittings (for appli-cable alloy UNS N08020)52.3 ManufacturersStandardization Society of the Valve andFittings Industry Stan
18、dard:SP-25 Standard Marking System for Valves, Fittings,Flanges, and Unions63. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 forgings, nthe term forgings as used in this specifi-cation shall be understood to cover one or all of the productsmentioned in 1.1, either forged or rol
19、led.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification. Examples of such requirements include, but arenot limited to, the following:4.1.1 Quantity (weight or number of pieces),4.1.2 Name of m
20、aterial or UNS number,4.1.3 Forging sketch when required (5.2.4),4.1.4 Forging sectioning, if required (5.2.3),4.1.5 ASTM designation and year of issue,4.1.6 Inspection (14.1),4.1.7 Supplementary requirements, if any, and4.1.8 If possible, the intended end use.NOTE 1A typical ordering description is
21、 as follows: 200 forgings,UNS N08020, in accordance with the attached drawing and SpecificationB462.5. Materials and Manufacture5.1 DiscardA sufficient discard shall be made from eachingot to secure freedom from injurious piping and unduesegregation. The material shall have a homogeneous structureas
22、 shown by the macroetch test in 7.3.5.2 Manufacturing Practice:5.2.1 Material for forging shall consist of a billet, bar, orforging produced in accordance with Specifications B166,B335, B408, B 462, B472, B473, B574, B581, B649,orB691.5.2.2 The material shall be forged by hammering, pressing,rolling
23、, extruding, or upsetting; it shall be brought as nearly aspracticable to the finished shape and size by hot working; andshall be so processed as to cause metal flow during thehot-working operation in the direction most favorable forresisting the stresses encountered in service.5.2.3 When specified
24、in the order, a sample forging may besectioned and etched to show flow lines and the condition asregards internal imperfections. In such cases, the question ofacceptable and unacceptable character of metal flow shall be asubject for agreement between the manufacturer and thepurchaser.5.2.4 When spec
25、ified in the order, the manufacturer shallsubmit for approval of the purchaser a sketch showing theshape of the rough forging before machining.5.3 Heat Treatment:5.3.1 The product of UNS N08020 alloy shall be furnishedin the stabilized-annealed condition. The product of UNSN06022, UNS N06035, UNS N0
26、6030, UNS N06200, UNSN10362, UNS N10276, UNS N10665, UNS N10675, UNSN06699, and UNS R20033 alloys shall be furnished in thesolution annealed condition.NOTE 2The recommended annealing temperatures all followed bywater quenching or rapidly cooling by other means are: UNSN060302125 to 2175F (1163 to 11
27、91C), UNS N060222025 to 2075F(1107 to 1135C), UNS N0603520252075F (11071135C), UNSN062002075 to 2125F (1135 to 1163C), UNS N060592025 to 2125F(1107 to 1163C), UNS N103622075 to 2125F (1135 to 1163C), UNSN066862125 to 2225F (1163 to 1218C), UNS N080201700 to 1850F(927 to 1010C), UNS N102762025 to 207
28、5F (1107 to 1135C), UNSN106651925 to 2000F (1052 to 1093C), UNS N106751925 to 2000F(1052 to 1093C), UNS N106291925 to 2000F (1052 to 1093C), UNSN080312050 to 2160F (1121 to 1182C) UNS N060452125 to 2190F(1163 to 1199C), UNS N060252175 to 2240F (1191 to 1227C), UNSN066991975 to 2065F (1080 to 1130C),
29、 and UNS R200332010 to2150F (1100 to 1180C).5.3.2 Alloy N08367 shall be furnished in the solutionannealed condition.5.3.2.1 The recommended heat treatment shall consist ofheating to a minimum temperature of 2025F (1105C) andquenching in water, or rapidly cooling, by other means.5.3.3 Heat treatment
30、may be performed before machining.6. Chemical Composition6.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.6Available from M
31、anufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.B462 182TABLE 1 Chemical RequirementsElementUNS N08020 UNS N08367 UNS R20033Carbon, max 0.07 0.030 0.015Manganese, max 2.00 2.00 2.0Phosphorus, max 0.045 0.040 0.02Su
32、lfur, max 0.035 0.030 0.01Silicon, max 1.00 1.00 0.50Nickel 32.0038.00 23.50 to 25.50 30.033.0Chromium 19.0021.00 20.00 to 22.00 31.035.0Molybdenum 2.003.00 6.00 to 7.00 0.502.0Copper 3.004.00 0.75 max 0.301.20Columbium (Nb)+ tantalum8 carbon1.00 . .Nitrogen . 0.18 to 0.25 0.350.60Iron RemainderARem
33、ainderARemainderAElementComposition, %UNS N06030 UNS N06022 UNS N06200 UNS N10276 UNS10665 UNS N10675Carbon, max 0.03 0.015 0.010 0.010 0.02 0.01Manganese, max 1.5 0.50 0.50 1.0 1.0 3.0Phosphorous, max 0.04 0.02 0.025 0.04 0.04 0.030Sulphur, max 0.02 0.02 0.010 0.03 0.03 0.010Silicon. max 0.8 0.08 0
34、.08 0.08 0.10 0.10Nickel RemainderARemainderARemainderARemainderARemainderARemainderAChromium 28.0-31.5 20.0-22.5 22.024.0 14.5-16.5 1.0 max 1.0-3.0Molybdenum 4.0-6.0 12.5-14.5 15.0-17.0 15.0-17.0 26.0-30.0 27.0-32.0Copper 1.0-2.4 . 0.3-1.9 . . 0.20Columbium (Nb)+ tantalum0.30-1.50 . . . . .Nitrogen
35、 . . . . . .Iron 13.0-17.0 2.0-6.0 3.0 max 4.0-7.0 2.0 max 1.0-3.0Cobalt, max 5.0 2.5 2.0 2.5 1.0 3.0Tungsten 1.5-4.0 2.5-3.5 . 3.0-4.5 . 3.0 maxVanadium, max . 0.35 . 0.35 . 0.20Titanium, max . . . . . 0.2Zirconium, max . . . . . 0.10Columbium (Nb) . . . . . 0.20 maxTantalum . . . . . 0.20 maxNicke
36、l+ Molybdenum. . . . . 94.0-98.0Aluminum, max . . 0.50 . . 0.50ElementComposition, %UNSN06699UNSN06059UNSN10362UNSN06686UNSN08031UNSN06045USNN06025USNN10629USNN06035Carbon, max 0.005-0.10 0.010 0.010 0.010 0.015 0.05-0.12 0.15-0.25 0.01 0.050Manganese, max 0.50 0.5 0.60 0.75 2.0 1.0 0.15 1.5 0.50Pho
37、sphorous,max0.02 0.015 0.025 0.04 0.020 0.02 0.02 0.040 0.030Sulphur, max 0.01 0.010 0.010 0.02 0.010 0.010 0.010 0.010 0.015Silicon, max 0.50 0.10 0.08 0.08 0.3 2.5-3.0 0.5 0.05 0.60Nickel, RemainderARemainderARemainderARemainderA30.0-32.0 45.0 min RemainderARemainderARemainderAChromium 26.0-30.0 2
38、2.0-24.0 13.8-15.6 19.0-23.0 26.0-28.0 26.0-29.0 24.0-26.0 0.5-1.5 32.25-34.25Molybdenum . 15.0-16.5 21.5-23.0 15.0-17.0 6.0-7.0 . . 26.0-30.0 7.60-9.00Copper 0.50 max 0.50 max . . 1.0-1.4 0.3 max 0.1 max 0.5 0.30 maxYttrium . . . . . . 0.05-0.12 . .Nitrogen 0.05 max . . . 0.15-0.25 . . . .Iron 2.5
39、max 1.5 max 1.25 max 5.0 max RemainderA21.0-25.0 8.011.0 1.0-6.0 2.00 maxCobalt, max . 0.3 . . . . . 2.5 1.00Tungsten . . . 3.0-4.4 . . . . 0.60 maxVanadium, max . . . . . . . . 0.20Titanium, max 0.60 . . 0.02-0.25 . . 0.1-0.2 . .Zirconium, max 0.10 . . . . . 0.01-0.10 . .Columbium (Nb) 0.50 max . .
40、 . . . . . .Tantalum . . . . . . . . .Cerium . . . . . 0.03-0.09 . . .Aluminum, max 1.9-3.0 0.1-0.4 0.50 . . . 1.8-2.4 0.1-1.5 0.40Boron 0.008 max . . . . . . . .AShall be determined arithmetically by difference.B462 1836.2 If a product (check) analysis is performed by thepurchaser, the material sha
41、ll conform to the requirementsspecified in Table 1 subject to the permissible tolerances inSpecification B880.7. Mechanical Properties and Other Requirements7.1 Mechanical PropertiesThe material shall conform tothe requirements as to mechanical properties prescribed inTable 2 at room temperature.7.2
42、 Hydrostatic TestsAfter machining, valve bodies,fittings, and other pressure-containing parts shall be tested tothe hydrostatic shell-test pressures prescribed in ANSI B16.5for the applicable alloy steel rating for which the forging isdesigned and shall show no leaks. Forgings ordered underthese spe
43、cifications for working pressures other than thoselisted in the American National Standard ratings shall be testedto such pressures as may be agreed upon between the manu-facturer and the purchaser.7.2.1 No hydrostatic test is required for welding neck orother flanges.7.2.2 The forging manufacturer
44、is not required to performpressure tests on rough forgings that are to be finally machinedby others. The fabricator of finished forged parts is not requiredto pressure-test forgings that are designed to be pressurecontaining only after assembly by welding into a largerstructure. However, the manufac
45、turer of such forgings isresponsible as required in accordance with 15.1 for thesatisfactory performance of the forgings under the final testrequired in 7.2.7.3 Macroetch TestsEtching of tests shall show sound andreasonably uniform material, free of injurious laminations,cracks, segregations, and si
46、milar objectionable defects. If, onsuccessive tests, 10 % of any heat fails to pass the requirementsof the macroetch test, all forgings from that heat shall berejected.8. Dimensions and Permissible Variations8.1 The forgings shall conform to the sizes and shapesspecified by the purchaser.9. Workmans
47、hip, Finish, and Appearance9.1 The forgings shall be uniform in quality and condition,and shall be free of injurious defects.10. Sampling10.1 LotDefinition:10.1.1 A lot for chemical analysis shall consist of one heat.10.1.2 A lot for mechanical properties shall consist of eachheat in each heat-treat
48、ment charge.10.2 Test Material Selection:10.2.1 Chemical AnalysisRepresentative samples shall betaken during pouring or subsequent processing.10.2.1.1 Check analysis, shall be wholly the responsibilityof the purchaser.10.2.2 Mechanical PropertiesSamples of the material toprovide test specimens shall
49、 be taken from such locations ineach lot as to be representative of that lot.11. Number of Tests11.1 Chemical AnalysisOne test per lot.11.2 Mechanical PropertiesOne test per lot.12. Specimen Preparation12.1 The tension test specimens taken from the forgings,billets, or bars shall be machined to the form and dimensions ofthe standard 2-in. (50.8-mm) gage length tension test specimenshown in the figure titled Standard 0.500 in. Round TensionTest Specimen with 2 in. Gage Length and Examples ofSm
