1、Designation:B44603(Reapproved2008) Designation: B446 03 (Reapproved 2008)1Standard Specification forNickel-Chromium-Molybdenum-Columbium Alloy (UNSN06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNSN06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy(UNS N06650)*N06650) Rod and Bar1This standar
2、d is issued under the fixed designation B446; 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
3、change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1NOTETable 1 was corrected editorially in October 2010.1. Scope1.1 This specification covers nickel-chromium-molybdenum-columbium (UNS N06625), nickel-chromium-molybdenum-sil
4、icon alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* in the form of hot-worked rodand bar and cold-worked rod in the conditions shown in Table 1.1.1.1 UNS N06625 products are furnished in two grades of different heat-treated conditions:1.1.1.1 Grade 1 (Annealed) Mater
5、ial is normally employed in service temperatures up to 1100F (593C).1.1.1.2 Grade 2 (Solution 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, depend
6、ing on working history and temperatures.1.1.2 Alloys UNS N06219 and UNS N06650 are supplied in solution annealed condition only.1.2The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for informationonly.1.2 The values stated in inch-pound uni
7、ts 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 caveat pertains only to the test methods portion, Section 12, of this specification: This
8、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 the appropriate Material Safety Data Sheet (MSDS) forthis product/material as provid
9、ed by the manufacturer, to establish appropriate safety and health practices, and determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B443 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy(UNS N06625) and Nickel-Chromium-Molybdenum-
10、SiliconAlloy (UNS N06219) Plate, Sheet, and StripB880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conf
11、ormance with SpecificationsE1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard:1This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct respo
12、nsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved March 1, 2008. Published March 2008. Originally approved in 1966. Last previous edition approved in 2003 as B446 - 03. DOI:10.1520/B0446-03R08E01.* New designation (UNS N06650) was established in a
13、ccordance with Practice E527 and SAE J 1086, Practice for Numbering Metals and Alloys (UNS).2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document
14、Summary page on the ASTM website.1This document is not an ASTM standard and is intended only 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 recom
15、mends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.1 bar, nma
16、terial of rectangular (flats) or square solid section up to and including 10 in. (254 mm) in width and18 in. (3.2mm) and over in thickness in straight lengths.3.1.1.1 DiscussionHot-worked rectangular bar in widths 10 in. (254 mm) and under may be furnished as hot-rolled plate withsheared or cut edge
17、s in accordance with Specification B443, provided the mechanical property requirements of this specificationare met.3.1.2 rod, nmaterial of round solid section furnished in straight lengths.4. Ordering Information4.1 It is the responsibility of the purchaser to specify all requirements that are nece
18、ssary for the safe and satisfactoryperformance of material ordered under this specification. Examples of such requirements include, but are not limited to, thefollowing: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,
19、4.1.5 Condition (see 1.1.1, 1.1.2, and appendix),4.1.5.1 If neither grade of N06625 is specified, Grade 1 will be supplied,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),m
20、in, ksi (MPa)Elongationin 2 in. or50 mm or4D,min,%UNS 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 (600) 39 (270) 50All sizes 96 (660) 39 (270) 50U
21、NS N06650 All (Solution Annealed)All sizes 116 (800) 58 (400) 45AForging quality is 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
22、 annealed at 2000F (1093C) minimum, with or without subsequentstabilization anneal at 1800F (982C) minimum to increase resistance to sensi-tization. MPa was corrected editorially.TABLE 2 Chemical RequirementsElementCompositionLimits, %N06625 N06219 N06650Carbon 0.10 max 0.05 max 0.03 maxManganese 0.
23、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 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
24、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 Bal. Bal.Tungsten . . 0.50-2.50Nitrogen . . 0.05-0.20AElement shall be determined arithmetically by difference.B446 03 (2008)124.1.6 Fin
25、ish (Section 8),4.1.7 QuantityFeet (or metres) or number of pieces,4.1.8 CertificationState if certification is required (see Section 15),4.1.9 Samples for Product (Check) AnalysisState whether samples for product (check) analysis should be furnished (see 5.2),and4.1.10 Product Marking (see Section
26、16)State product marking requirements.4.1.11 Purchaser Inspection (see Section 13)If purchaser wishes to witness tests or inspection of material at place ofmanufacture, the purchase order must so state, indicating which test or inspections are to be witnessed.5. Chemical Composition5.1 The material
27、shall conform to the composition limits specified in Table 2.5.2 If a product (check) analysis is performed by the purchaser, the material shall conform to the product (check) analysisvariations in Specification B880.6. Mechanical Properties and Other Requirements6.1 Mechanical PropertiesThe materia
28、l shall conform to the heat treatment and room temperature tensile propertiesprescribed in Table 1.7. Dimensions and Permissible Variations7.1 Diameter, Thickness, or WidthThe permissible variations from the specified dimensions of cold-worked rod shall be asprescribed in Table 3, and of hot-worked
29、rod and bar as prescribed in Table 4.7.2 Out-of-RoundHot-worked rods and cold-worked rods (except “forging quality”) all sizes, in straight lengths, shall not beout-of-round by more than one half the total permissible variations in diameter shown in Tables 3 and 4, except for hot-workedrods12 in. (1
30、2.7 mm) in diameter and under, which may be out-of-round by the total permissible variations in diameter shown inTable 4.7.3 Machining Allowances for Hot-Worked MaterialsWhen the surfaces of hot-worked products are to be machined, theallowances prescribed in Table 5 are recommended for normal machin
31、ing operations.7.4 LengthThe permissible variations in length of cold-worked and hot-worked rod and bar shall be as prescribed in Table6.TABLE 3 Permissible Variations in Diameter of Cold-Worked RodSpecified Dimension,in. (mm)Permissible Variations from SpecifiedDimension, in. (mm)Plus Minus116 (1.6
32、) 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) 0.004 (0.10)TABLE 4 Permissible Variations in Diameter
33、 or DistanceBetween Parallel 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)0.031 (0.79)0.016 (0.41)0.016 (0.41)Over 2 (50.8) to 4(10
34、1.6), 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) and over 0.031 (0.79) 0ADimensions apply to diameter of
35、 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 diameter of the rod.B446 03 (2008)137.4.1 Rods and bars order
36、ed to random or nominal lengths will be furnished with either cropped or saw-cut ends; materialordered to cut lengths will be furnished with square saw-cut or machined ends.7.5 Straightness:7.5.1 The permissible variations in straightness of cold-worked rod as determined by the departure from straig
37、htness shall beas prescribed in Table 7.7.5.2 The permissible variations in straightness of hot-worked rod and bar as determined by the departure from straightness shallbe as specified in Table 8.8. Workmanship, Finish and Appearance8.1 The material shall be uniform in quality and condition, smooth,
38、 commercially straight or flat, and free of injuriousimperfections.9. Sampling9.1 LotDefinition:9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 A lot for mechanical properties testing shall consist of all material from the same heat, nominal diameter or thickness, andcondition.9.1.
39、2.1 Where material cannot be identified by heat, a lot shall consist of not more than 500 lb (227 kg) of material in the samesize and condition except that a single piece weighing over 500 lb (227 kg) shall be considered as one lot.TABLE 5 Normal Machining Allowances for Hot-Worked MaterialFinished-
40、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 (4.8)Over78 to 178 (22.2 to 47.6), i
41、ncl18 (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)
42、 . . .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 thickness of rectangular bar.BThe allowances for hot-worked material in Table 5 are recommended for rods machined
43、 in lengths of 3 ft (0.91 m) or less and for bars machined in lengths of 2ft(0.61m) or less. Hot-worked material to be machined in longer lengths should be specified showing the finished cross-sectional dimension and the length in which the materialwill be machined in order that the manufacturer may
44、 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 BarsRandom 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
45、.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 length, within the length limits indicated above. For each multiple, an allowance of14 in. (6.4 mm) will be made
46、 forcutting, unless otherwise specified. At the manufacturers option, individual specified unit lengths may be furnished.Nominal lengthsSpecified nominal lengths having a range of not less than 2 ft. (610 mm) with no short lengths allowed.ACut lengthsA specified length to which all rods and bars wil
47、l 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 variation shall be +14 in. (6.4 mm), 0.AFor cold-worked rod under12 in. (12.7 mm) in diameter ordered to nominal
48、 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 than 4 ft (1220 mm) be furnished.BFor hot-worked sections weighing over 25 lb/ft (37 kg/m) and for smooth forged pr
49、oducts, 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 Variations, 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.B446 03 (2008)149.2 Test Material Selection:9.2.1 Chemical AnalysisRepresentative samples from each lot shall be taken duri
