1、Designation: B446 03 (Reapproved 2014)Standard 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 B446
2、; the number immediately 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 () indicates an editorial change since the last revision or reapproval
3、.This standard has been approved for use by agencies of the U.S. 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)2inthe form
4、 of hot-worked rod 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 Ann
5、ealed)Material is normallyemployed in service temperatures above 1100F (593C) whenresistance to creep and rupture is required.NOTE 1Hot-working or reannealing may change propertiessignificantly, depending on working history and temperatures.1.1.2 Alloys UNS N06219 and UNS N06650 are supplied insolut
6、ion annealed condition only.1.2 The 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 The following precautionary caveat pertains only to t
7、hetest methods portion, Section 12, of this specification:Thisstandard does not purport to address 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 Materia
8、l Safety Data Sheet(MSDS) for this product/material as provided by themanufacturer, to establish appropriate safety and healthpractices, and determine the applicability of regulatory limi-tations prior to use.2. Referenced Documents2.1 ASTM Standards:3B443 Specification for Nickel-Chromium-Molybdenu
9、m-Columbium Alloy(UNS N06625) and Nickel-Chromium-Molybdenum-SiliconAlloy (UNS N06219) Plate, Sheet,and StripB880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice f
10、or Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1473 Test Methods for Chemical Analysis of Nickel,Cobalt, and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bar, nmaterial of rectangular (flats) or square solidsectio
11、n up to and including 10 in. (254 mm) in width and18 in.(3.2 mm) and over in thickness in straight 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 SpecificationB443, provided the
12、mechanical property requirements of thisspecification are met.3.1.2 rod, nmaterial of round solid 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
13、Nickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2014. Published October 2014. Originallyapproved in 1966. Last previous edition approved in 2008 as B446 03 (2008)1.DOI: 10.1520/B0446-03R14.2New designation (UNS N06650) was established in accordance with PracticeE527 and SAE J 108
14、6, Practice for Numbering Metals and Alloys (UNS).3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright A
15、STM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for the safe and satisfactoryperformance of material ordered under this specificat
16、ion.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,4.1.5 Condition (see 1.1.1, 1.1.2, and appendix),4.1.5.1 If neither grade of N06625 is sp
17、ecified, Grade 1 willbe supplied,4.1.6 Finish (Section 8),4.1.7 QuantityFeet (or metres) or number of pieces,4.1.8 CertificationState if certification is required (seeSection 15),4.1.9 Samples for Product (Check) AnalysisState whethersamples for product (check) analysis should be furnished (see5.2),
18、 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 purchase order must so state, indicatingwhich test or inspections are to be witnessed.5.
19、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)analysis variations in Specification B880.6. Mechanical Properties and Other Requirements6
20、.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 permissible varia-tions from the specified dimensions of cold-worked rod shallbe as prescr
21、ibed in Table 3, and of hot-worked rod and bar asprescribed in Table 4.TABLE 1 Conditions for Hot-Worked Rod and Bar and Cold-Worked RodADiameter or DistanceBetween Parallel Surfaces,in. (mm)TensileStrengthmin, ksi(MPa)YieldStrength(0.2 % offset),min, ksi (MPa)Elongationin 2 in. or50 mm or4D,min,%UN
22、S N06625 Grade 1 (Annealed)BUp to 4 (102), incl 120 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 (660) 39 (270) 50UNS N06650 All (Solution Annealed)All sizes 116 (800) 58 (400) 45AForging quality i
23、s furnished to chemical requirements and surface inspectiononly. 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
24、 at 1800F (982C) minimum to increase resistance tosensitization. MPa was corrected editorially.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 0.02
25、0 max 0.020 maxSulfur 0.015 max 0.010 max 0.010 maxChromium 20.0 min 18.0-22.0 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
26、 0.05-0.50Titanium 0.40 max 0.50 max .Copper . 0.50 max 0.30 maxNickelA58.0 min 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 Variatio
27、ns from SpecifiedDimension, in. (mm)Plus Minus116 (1.6) to316 (4.8), excl 0 0.002 (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)
28、0.004 (0.10)TABLE 4 Permissible Variations in Diameter or Distance BetweenParallel Surfaces of Hot-Worked Rod and BarSpecified Dimension,in. (mm)APermissible Variations fromSpecified Dimensions, in.(mm)Plus MinusRod and bar, hot-worked:1 (25.4) and underOver 1 (25.4) to 2 (50.8), incl0.016 (0.41)0.0
29、31 (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 0.031 (0.79) 0Forging quantity rod:BUnder 1 (25.4) 0.005 (0.13) 0.005 (0.13)1 (25.4) a
30、nd 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 imperfections. The depth ofthese spot ground areas shall not exceed 3 % of the diamete
31、r of the rod.B446 03 (2014)27.2 Out-of-RoundHot-worked rods and cold-worked rods(except “forging quality”) all sizes, in straight lengths, shall notbe out-of-round by more than one half the total permissiblevariations in diameter shown in Tables 3 and 4, except forhot-worked rods12 in. (12.7 mm) in
32、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 surfaces of hot-worked products are to be machined,the allowances prescribed in Table 5 are recommended fornormal machining operation
33、s.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 nominal lengthswill be furnished with either cropped or saw-cut ends; materialordered to cut lengths will be furnished with square saw-
34、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 prescribed in Table 7.7.5.2 The permissible variations in straightness of hot-worked rod and bar as determined by the departure fromstr
35、aightness shall be as specified in Table 8.TABLE 5 Normal Machining Allowances 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 Thi
36、ckness On WidthHot-worked:BUp to78 (22.2), incl18 (3.2)18 (3.2)18 (3.2)316 (4.8)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)
37、 . .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 square bar, and separately to width and th
38、ickness of rectangular bar.BThe allowances for hot-worked material in Table 5 are recommended for rods machined in lengths of 3 ft (0.91 m) or less and for bars machined in lengths of 2 ft (0.61m) or less. Hot-worked material to be machined in longer lengths should be specified showing the finished
39、cross-sectional dimension and the length in which the materialwill be machined in order that the manufacturer may supply material with sufficient oversize, including allowance for out-of-straightness.CApplicable to 3 ft (0.91 m) max length.TABLE 6 Permissible Variations in Length of Rods and BarsRan
40、dom mill lengths:Hot-workedA6 to 24 ft (1.83 to 7.31 m) long with not more than 25 weight % between 6 and 9 ft (1.83 and 2.74 m).BCold-worked6 to 20 ft (1.83 to 6.1 m) long with not more than 25 weight % between 6 and 10 ft (1.83 and 3.05 m).Multiple lengthsFurnished in multiples of a specified unit
41、 length, within the length limits indicated above. For each multiple, an allowance of14 in. (6.4 mm) will be made forcutting, unless otherwise specified. At the manufacturers option, individual specified unit lengths may be furnished.Nominal lengthsSpecified nominal lengths having a range of not les
42、s than 2 ft. (610 mm) with no short lengths allowed.ACut lengthsA specified length to which all rods and bars will be cut with a permissible variation of plus18 in. (3.2 mm), minus 0 for sizes 8 in. (203 mm) and less indiameter or distance between parallel surfaces. For larger sizes, the permissible
43、 variation shall be +14 in. (6.4 mm), 0.AFor cold-worked rod under12 in. (12.7 mm) in diameter ordered to nominal or stock lengths with a 2-ft (610-mm) range, at least 93 % of such material shall be withinthe range specified; the balance may be in shorter lengths but in no case shall lengths less th
44、an 4 ft (1220 mm) be furnished.BFor hot-worked sections weighing over 25 lb/ft (37 kg/m) and for smooth forged products, all sections, short lengths down to 2 ft (610 mm) may be furnished.TABLE 7 Permissible Variations in Straightness of Cold-WorkedRodsSpecified Diameter, in. (mm)APermissible Variat
45、ions, in. (mm)Depth of Chord:12 (12.7) to 212 (63.5), incl 0.030 (0.76) per ft (305 mm) of lengthAMaterial under12 in. (12.7 mm) shall be reasonably straight and free of sharpbends and kinks.TABLE 8 Permissible Variations in Straightness of Hot-WorkedRods and BarsAFinish Permissible Variations, in./
46、ft (mm/m)BRods and bars, hot-worked 0.050 (4.2)CRoundshot-worked, rough ground orrough turned0.050 (4.2)CANot applicable to forging quality.BMaterial under12 in. (12.7 mm) shall be reasonably straight and free of sharpbends and kinks.CThe maximum curvature (depth of chord) shall not exceed the value
47、s indicatedmultiplied by the length in feet.B446 03 (2014)38. 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 A lot for chemical analysis shall c
48、onsist 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) of material in thesame size and condi
49、tion 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) analysis 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.1
