1、Designation: B 446 03Standard Specification forNickel-Chromium-Molybdenum-Columbium Alloy (UNSN06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNSN06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy(UNS N06650)* Rod and Bar1This standard is issued under the fixed designation B 446; the number im
2、mediately following the designation 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 (e) indicates an editorial change since the last revision or reapproval.This standard
3、 has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers nickel-chromium-molybdenum-columbium (UNS N06625), nickel-chromium-molybdenum-silicon alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* inthe form of hot-worked rod
4、 and bar and cold-worked rod in theconditions shown in Table 1.1.1.1 UNS N06625 products are furnished in two grades ofdifferent heat-treated conditions:1.1.1.1 Grade 1 (Annealed)Material is normally em-ployed in service temperatures up to 1100F (593C).1.1.1.2 Grade 2 (Solution Annealed)Material is
5、normallyemployed in service temperatures above 1100F (593C) whenresistance to creep and rupture is required.NOTE 1Hot-working or reannealing may change properties signifi-cantly, depending on working history and temperatures.1.1.2 Alloys UNS N06219 and UNS N06650 are supplied insolution annealed con
6、dition only.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 The following precautionary caveat pertains only to thetest methods portion, Section 12, of this specification: Thisstandard does not purport to addres
7、s all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to become familiar with all hazards includingthose identified in the appropriate Material Safety Data Sheetfor this product/material as provided by the manufacturer, toestablish appropr
8、iate safety and health practices, and deter-mine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:B 443 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219) Plate, Sheet,a
9、nd Strip2B 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt Alloys2E 8 Test Methods for Tension Testing of Metallic Materials3E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications4E 1473 Tes
10、t Methods for Chemical Analysis of Nickel,Cobalt, and High-Temperature Alloys53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 barmaterial of rectangular (flats) or square solidsection up to and including 10 in. (254 mm) in width and18 in.(3.2 mm) and over in thickness in strai
11、ght lengths.3.1.1.1 DiscussionHot-worked rectangular bar in widths10 in. (254 mm) and under may be furnished as hot-rolled platewith sheared or cut edges in accordance with SpecificationB 443, provided the mechanical property requirements of thisspecification are met.3.1.2 rodmaterial of round solid
12、 section furnished instraight lengths.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved June 10, 2003. Published July 2003. O
13、riginallyapproved in 1966. Last previous edition approved in 2002 as B 446 - 02.* New designation established in accordance with Practice E 527 and SAEJ 1086, Practice for Numbering Metals and Alloys (UNS).2Annual Book of ASTM Standards, Vol 02.04.3Annual Book of ASTM Standards, Vol 03.01.4Annual Bo
14、ok of ASTM Standards, Vol 14.02.5Annual Book of ASTM Standards, Vol 03.05.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necess
15、ary for the safe and satisfactoryperformance of material ordered under this specification.Examples of such requirements include, but are not limited to,the following:4.1.1 ASTM designation,4.1.2 UNS number,4.1.3 SectionRod (round) or bar (square or rectangular),4.1.4 Dimensions, including length,4.1
16、.5 Condition (see 1.1.1, 1.1.2, and appendix),4.1.5.1 If neither grade of N06625 is specified, Grade 1 willbe supplied,4.1.6 Finish (Section 8),4.1.7 QuantityFeet (or metres) or number of pieces,4.1.8 Certification State if certification is required (seeSection 15),4.1.9 Samples for Product (Check)
17、AnalysisState whethersamples for product (check) analysis should be furnished (see5.2), and4.1.10 Product Marking (see Section 16)State productmarking requirements.4.1.11 Purchaser Inspection (see Section 13)If purchaserwishes to witness tests or inspection of material at place ofmanufacture, the pu
18、rchase order must so state, indicatingwhich test or inspections are to be witnessed.5. Chemical Composition5.1 The material shall conform to the composition limitsspecified in Table 2.5.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to the product (check)ana
19、lysis variations in Specification B 880.6. Mechanical Properties and Other Requirements6.1 Mechanical PropertiesThe material shall conform tothe heat treatment and room temperature tensile propertiesprescribed in Table 1.7. Dimensions and Permissible Variations7.1 Diameter, Thickness, or WidthThe pe
20、rmissible varia-tions from the specified dimensions of cold-worked rod shallbe as prescribed in Table 3, and of hot-worked rod and bar asprescribed in Table 4.7.2 Out-of-Round Hot-worked rods and cold-worked rods(except “forging quality”) all sizes, in straight lengths, shall notbe out-of-round by m
21、ore than one half the total permissiblevariations in diameter shown in Tables 3 and 4, except forhot-worked rods12 in. (12.7 mm) in diameter and under, whichmay be out-of-round by the total permissible variations indiameter shown in Table 4.7.3 Machining Allowances for Hot-Worked MaterialsWhen the s
22、urfaces of hot-worked products are to be machined,the allowances prescribed in Table 5 are recommended fornormal machining operations.7.4 LengthThe permissible variations in length of cold-worked and hot-worked rod and bar shall be as prescribed inTable 6.7.4.1 Rods and bars ordered to random or nom
23、inal lengthswill be furnished with either cropped or saw-cut ends; materialordered to cut lengths will be furnished with square saw-cut ormachined ends.7.5 Straightness:7.5.1 The permissible variations in straightness of cold-worked rod as determined by the departure from straightnessshall be as pre
24、scribed in Table 7.TABLE 1 Conditions for Hot-Worked Rod and Bar and Cold-Worked RodADiameter or DistanceBetween ParallelSurfaces, in. (mm)TensileStrengthmin, ksi(MPa)YieldStrength(0.2 % offset),min, ksi (MPa)Elongationin 2 in. or50 mm or4D, min, %UNS N06625 Grade 1 (Annealed)BUp to 4 (102), incl 12
25、0 60 30Over 4 (102) to 10 (254),incl110 50 25UNS N06625 Grade 2 (Solution Annealed)CAll sizes 100 40 30UNS N06219 All (Solution Annealed)All sizes 96 (600) 39 (270) 50UNS N06650 All (Solution Annealed)All sizes 116 (800) 58 (400) 45AForging quality is furnished to chemical requirements and surface i
26、nspectiononly. No tensile properties are required. Forging stock is typically supplied in thehot worked condition, (see X1.1.5).BAnnealed 1600F (871C) minimum.CSolution annealed at 2000F (1093C) minimum, with or without subsequentstabilization anneal at 1800F (982C) minimum to increase resistance to
27、 sensi-tization.TABLE 2 Chemical RequirementsElementCompositionLimits, %N06625 N06219 N06650Carbon 0.10 max 0.05 max 0.03 maxManganese 0.50 max 0.50 max 0.50 maxSilicon 0.50 max 0.70-1.10 0.50 maxPhosphorus 0.015 max 0.020 max 0.020 maxSulfur 0.015 max 0.010 max 0.010 maxChromium 20.0 min 18.0-22.0
28、19.0-21.023.0 max . .Columbium + tantalum 3.15 min . 0.05-0.504.15 max .Cobalt (if determined) 1.0 max 1.0 max 1.0 maxMolybdenum 8.0 min 7.0-9.0 9.5-12.510.0 max . .Iron 5.0 max 2.0-4.0 12.0-16.0Aluminum 0.40 max 0.50 max 0.05-0.50Titanium 0.40 max 0.50 max .Copper . 0.50 max 0.30 maxNickelA58.0 min
29、 Bal. Bal.Tungsten . . 0.50-2.50Nitrogen . . 0.05-0.20AElement shall be determined arithmetically by difference.TABLE 3 Permissible Variations in Diameter of Cold-Worked RodSpecified Dimension,in. (mm)Permissible Variations from SpecifiedDimension, in. (mm)Plus Minus116 (1.6) to316 (4.8), excl 0 0.0
30、02 (0.05)316 (4.8) to12 (12.7), excl 0 0.003 (0.08)12 (12.7) to1516 (23.8), incl 0.001 (0.03) 0.002 (0.05)Over1516 (23.8) to 11516 (49.2), incl 0.0015 (0.04) 0.003 (0.08)Over 11516 (49.2) to 212 (63.5), incl 0.002 (0.05) 0.004 (0.10)B4460327.5.2 The permissible variations in straightness of hot-work
31、ed rod and bar as determined by the departure fromstraightness shall be as specified in Table 8.8. Workmanship, Finish and Appearance8.1 The material shall be uniform in quality and condition,smooth, commercially straight or flat, and free of injuriousimperfections.9. Sampling9.1 LotDefinition:9.1.1
32、 A lot for chemical analysis shall consist of one heat.9.1.2 A lot for mechanical properties testing shall consist ofall material from the same heat, nominal diameter or thickness,and condition.9.1.2.1 Where material cannot be identified by heat, a lotshall consist of not more than 500 lb (227 kg) o
33、f material in thesame size and condition except that a single piece weighingover 500 lb (227 kg) shall be considered as one lot.9.2 Test Material Selection:9.2.1 Chemical AnalysisRepresentative samples fromeach lot shall be taken during pouring or subsequent process-ing.9.2.1.1 Product (check) analy
34、sis shall be wholly the respon-sibility of the purchaser.9.2.2 Mechanical PropertiesSamples of the material toprovide test specimens for mechanical properties shall be takenfrom such locations in each lot as to be representative of thatlot.10. Number of Tests10.1 Chemical AnalysisOne test per lot.10
35、.2 TensionOne test per lot.11. Specimen Preparation11.1 Tension test specimens shall be taken from material inthe final condition and tested in the direction of fabrication.11.1.1 All rod and bar shall be tested in full cross sectionsize when possible. When a full cross section size test cannotbe pe
36、rformed, the largest possible round specimen shown inTest Methods E 8 shall be used. Longitudinal strip specimensshall be prepared in accordance with Test Methods E 8 forrectangular bar up to12 in. (12.7 mm), inclusive, in thicknessesthat are too wide to be pulled full size.12. Test Methods12.1 The
37、chemical composition and mechanical and otherproperties of the material as enumerated in this specificationshall be determined, in case of disagreement, in accordancewith the following ASTM standards:Test ASTM DesignationChemical analysis E 1473Tension E 8Rounding procedure E 2912.2 For purposes of
38、determining compliance with thespecified limits for requirements of the properties listed in thefollowing table, an observed or calculated value shall berounded as indicated below, in accordance with the roundingmethod of Practice E 29:TestRounded Unit for Observedor Calculated ValueChemical composi
39、tion andtolerances (when ex-pressed in decimals)Nearest unit in the last right-hand place offigures of the specified limit. If two choicesare possible, as when the digits droppedare exactly a 5, or a 5 followed only byzeros, choose the one ending in an evendigit, with zero defined as an even digit.T
40、ensile strength and yieldstrengthNearest 1000 psi (6.9 MPa)Elongation Nearest 1 %13. Inspection13.1 Inspection of the material shall be made as agreed uponbetween the manufacturer and the purchaser as part of thepurchase contract.14. Rejection and Rehearing14.1 Material tested by the purchaser that
41、fails to conform tothe requirements of this specification may be rejected. Rejec-tion should be reported to the producer or supplier promptlyand in writing. In case of dissatisfaction with the results of thetest, the producer or supplier may make claim for a rehearing.15. Certification15.1 When spec
42、ified in the purchase order or contract, amanufacturers certification shall be furnished to the purchaserstating that the material was manufactured, tested, and in-spected in accordance with this specification and that testresults on representative samples meet specification require-ments. When spec
43、ified in the purchase order or contract, areport of the test results shall be furnished.16. Product Marking16.1 The following information shall be marked on thematerial or included on the package, or on a label or tagattached thereto: The name of the material or UNS number;heat number; condition (te
44、mper); this specification number; thesize; gross, tare and net weight; consignor and consigneeTABLE 4 Permissible Variations in Diameter or DistanceBetween Parallel Surfaces of Hot-Worked Rod and BarSpecified Dimension,in. (mm)APermissible Variations fromSpecified Dimensions, in.(mm)Plus MinusRod an
45、d bar, hot-worked:1 (25.4) and underOver 1 (25.4) to 2 (50.8), incl0.016 (0.41)0.031 (0.79)0.016 (0.41)0.016 (0.41)Over 2 (50.8) to 4(101.6), incl0.047 (1.19) 0.031 (0.79)Over 4 (101.6) 0.125 (3.18) 0.063 (1.60)Rod, rough-turned orground:Under 1 (25.4) 0.005 (0.13) 0.005 (0.13)1 (25.4) and over 0.03
46、1 (0.79) 0Forging quantity rod:BUnder 1 (25.4) 0.005 (0.13) 0.005 (0.13)1 (25.4) and over 0.031 (0.79) 0ADimensions apply to diameter of rods, to distance between parallel surfaces ofsquares, and separately to width and thickness of rectangles.BSpot grinding is permitted to remove minor surface impe
47、rfections. The depth ofthese spot ground areas shall not exceed 3 % of the diameter of the rod.B446033address; contract or order number; or such other information asmay be defined in the contract or order.17. Keywords17.1 bar; rod; UNS N06625; UNS N06219; UNS N06650TABLE 5 Normal Machining Allowance
48、s for Hot-Worked MaterialFinished-Machined Dimensions for Finishes AsIndicated below, in. (mm)ANormal Machining Allowance, in. (mm)On Diameter,For RodsDistance BetweenParallel Surfacesof Square BarsFor Rectangular BarOn Thickness On WidthHot-worked:BUp to78 (22.2), incl18 (3.2)18 (3.2)18 (3.2)316 (4
49、.8)Over78 to 178 (22.2 to 47.6), incl18 (3.2)316 (4.8)18 (3.2)316 (4.8)Over 178 to 278 (47.6 to 73.0), incl316 (4.8)14 (6.4) . . .316 (4.8)Over 278 to 31316 (73.0 to 96.8), incl14 (6.4) . . . . . .316 (4.8)Over 31316 (96.8)14 (6.4) . . . . . .38 (9.5)Hot-worked rods, rough-turned or rough ground:C1516 to 4 (23.8 to 101.6), incl in diameter116 (1.6) . . . . . . . . .Over 4 to 12 (101.6 to 304.8), incl in diameter18 (3.2) . . . . . . . . .ADimensions apply to diameter of rods, to distance between parallel surfaces of s
