1、Designation: B 408 06Standard Specification forNickel-Iron-Chromium Alloy Rod and Bar1This standard is issued under the fixed designation B 408; 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
2、 parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification2covers UNS N08120, UNS N08800,UNS N08810, UNS N08811*, and UNS N08890 in the form ofhot-worked and cold-worked rod and bar.
3、Alloy UNS N08800is normally employed in service temperatures up to andincluding 1100F (593C). Alloys UNS N08120, UNSN08810, UNS N08811, and UNS N08890 are normally em-ployed in service temperatures above 1100F (593C) whereresistance to creep and rupture is required, and they areannealed to develop c
4、ontrolled grain size for optimum proper-ties in this temperature range.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 This standard does not purport to address all of thesafety concerns, if any, associated with
5、 its use. It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determin
6、e the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Usin
7、g Significant Digits in Test Data toDetermine Conformance with SpecificationsE112 Test Methods for Determining Average Grain SizeE 1473 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, nmateria
8、l of rectangular (flats), hexagonal, orsquare solid section up to and including 10 in. (254 mm) inwidth and18 in. (3.2 mm) and over in thickness in straightlengths.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
9、edges in accordance with SpecificationB 408, provided the mechanical property requirements ofSpecification B 408 are met.3.1.2 rod, nmaterial of round solid section furnished instraight lengths.4. Ordering Information4.1 Orders for material to this specification should includeinformation with respec
10、t to the following:4.1.1 ASTM designation, and year of issue.4.1.2 Alloy designation or UNS number.4.1.3 SectionRod (round) or bar (square, hexagonal, orrectangular).4.1.4 DimensionsDimensions including length (Section 8,Tables 1-4 incl).4.1.5 Condition (Table 5 and Appendix Appendix X1).4.1.6 Finis
11、h (Appendix X1).4.1.7 Quantity (feet or number of pieces).4.1.8 CertificationState if certification or a report of testresults is required (Section 16).4.1.9 Samples for Product (Check) AnalysisState whethersamples for product (check) analysis should be furnished.4.1.10 Purchaser InspectionIf purcha
12、ser wishes to wit-ness tests or inspection of material at place of manufacture, thepurchase order must so state indicating which test or inspec-tions are to be witnessed.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibilit
13、y of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Dec. 1, 2006. Published January 2007. Originallyapproved in 1957. Last previous edition approved in 2001 as B 408 01.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SB-408
14、 in Section II of that Code.* New designations established in accordance with Practice E 527 andSAE J1086, 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 ASTMS
15、tandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Materials and Manufacture5.1 Heat TreatmentThe final heat treatment of UNSN08120 shall be
16、 2150F (1177C) minimum, UNS N08810,2050F (1121C) minimum, UNS N08811, and UNS N08890,2100F (1149C) minimum.6. Chemical Composition6.1 The material shall conform to the composition limitsspecified in Table 6.6.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to
17、 the product (check)analysis variations in Specification B 880.7. Mechanical Properties and Other Requirements7.1 Mechanical PropertiesThe material shall conform tothe mechanical properties specified in Table 5.7.2 Grain SizeAnnealed UNS Alloys N08120, N08810,N08811, and N08890 shall conform to an a
18、verage grain size ofASTM No. 5 or coarser.8. Dimensions and Permissible Variations8.1 Diameter, Thickness, or WidthThe permissible varia-tions from the specified dimensions as measured on thediameter or between parallel surfaces of cold-worked rod andbar shall be as prescribed in Table 1, and of hot
19、-worked rod andbar as prescribed in Table 2.8.2 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 Table 1 and Table 2, except forhot-worked rod
20、s12 in. (12.7 mm) in diameter and under, whichmay be out-of-round by the total permissible variations indiameter shown in Table 2.8.3 CornersCold-worked bars will have practically exactangles and sharp corners.8.4 Machining Allowances for Hot-Worked MaterialsWhen the surfaces of hot-worked products
21、are to be machined,the allowances prescribed in Table 3 are recommended fornormal machining operations.8.5 LengthThe permissible variations in length of cold-worked and hot-worked rod and bar shall be as prescribed inTable 4.8.5.1 Rods and bars ordered to random or nominal lengthswill be furnished w
22、ith either cropped or saw-cut ends; materialordered to cut lengths will be furnished with square saw-cut ormachined ends.8.6 Straightness:8.6.1 The permissible variations in straightness of cold-worked rod and bar as determined by the departure fromstraightness shall be as prescribed in Table 7.8.6.
23、2 The permissible variations in straightness of hot-worked rod and bar as determined by the departure fromstraightness shall be as specified in Table 8.9. Workmanship, Finish, and Appearance9.1 The material shall be uniform in quality and condition,smooth, commercially straight or flat, and free of
24、injuriousimperfections.10. Sampling10.1 Lot:10.1.1 A lot for chemical analysis shall consist of one heat.10.1.2 A lot for mechanical properties and grain size testingshall consist of all material from the same heat, nominaldiameter or thickness, and condition.10.1.2.1 Where material cannot be identi
25、fied by heat, a lotshall consist of not more than 500 lb (227 kg) of material in thesame size and condition except that a single piece weighingover 500 lbs shall be considered as one lot.10.2 Test Material Selection:10.2.1 Chemical AnalysisRepresentative samples fromeach lot shall be taken during po
26、uring or subsequent process-ing.10.2.1.1 Product (check) analysis shall be wholly the re-sponsibility of the purchaser.10.2.2 Mechanical Properties and Grain SizeSamples ofthe material to provide test specimens for mechanical proper-ties shall be taken from such locations in each lot as to bereprese
27、ntative of that lot.11. Number of Tests11.1 Chemical AnalysisOne test per lot.11.2 TensionOne test per lot.TABLE 1 Permissible Variations in Diameter or DistanceBetween Parallel Surfaces of Cold-Worked Rod and BarSpecified Dimension, in.(mm)APermissible Variations fromSpecified Dimension, in. (mm)+R
28、ounds:116 (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) 0.004 (0.10)Hexagons, squares, rectangle
29、s:12 (12.7) and less 0 0.004 (0.10)Over12 (12.7) to78 (22.2), incl 0 0.005 (0.13)Over78 (22.2) to 114 (31.8), incl 0 0.007 (0.18)Over 114 (31.8) to 2 (50.8), incl 0 0.009 (0.23)ADimensions apply to diameter of rounds, to distance between parallel surfacesof hexagons and squares, and separately to wi
30、dth and thickness of rectangles.TABLE 2 Permissible Variations in Diameter or DistanceSpecified Dimension, in.(mm)APermissible Variations from SpecifiedDimensions, in. (mm)+Rod and bar, hot-worked:1 (25.4) and under 0.016 (0.41) 0.016 (0.41)Over 1 (25.4) to 2 (50.8), incl 0.031 (0.79) 0.016 (0.41)Ov
31、er 2 (50.8) to 4 (101.6), incl 0.047 (1.19) 0.031 (0.79)Over 4 (101.6) 0.125 (3.18) 0.063 (1.60)Rod, rough turned or ground:Under 1 (25.4) 0.005 (0.13) 0.005 (0.13)1 (25.4) and over 0.031 (0.79) 0Forging quality rod:BUnder 1 (25.4) 0.005 (0.13) 0.005 (0.13)1 (25.4) and over 0.031 (0.79) 0ADimensions
32、 apply to diameter of rods, to distance between parallel surfaces ofhexagons and squares, and separately to width and thickness of rectangles.BSpot grinding is permitted to remove minor surface imperfections. The depthof these spot ground areas shall not exceed 3 % of the diameter of the rod.B408062
33、11.3 Grain SizeOne test per lot.12. Specimen Preparation12.1 Tension test specimens shall be taken from material inthe final condition and tested in the direction of fabrication.12.1.1 All rod and bar shall be tested in full cross-sectionsize when possible. When a full cross-section size test cannot
34、be performed, the largest possible round specimen shown inTest Methods E8shall be used. Longitudinal strip specimensshall be prepared in accordance with Test Methods E8 forrectangular bar up to12 in. (12.7 mm), inclusive, in thicknesseswhich are too wide to be pulled full size.13. Test Method13.1 Th
35、e chemical composition, mechanical, and otherproperties of the material as enumerated in this specificationshall be determined, in case of disagreement, in accordancewith the following methods:Test ASTM DesignationChemical Analysis E 1473Tension E8Rounding Procedure E29Grain Size E11213.2 In the eve
36、nt of disagreement, the referee method for thedetermination of average grain size shall be the planimetricmethod.13.3 For purposes of determining compliance with thespecified limits for requirements of the properties listed in thefollowing table, an observed value or a calculated value shallbe round
37、ed as indicated below, in accordance with the round-ing method of Practice E29:TABLE 3 Normal Machining Allowances for Hot-worked MaterialFinished-Machined Dimensions for Finishes asIndicated Below, in. (mm)ANormal Machining Allowance, in. (mm)On Diameter,for RodsDistance Between ParallelSurfaces, f
38、or Hexagonal andSquare BarFor 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), 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), inc
39、l14 (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
40、 of hexagonal and 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 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
41、 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 supply material with sufficient oversize, including allowance for out-of-straightness.CApplicable to 3 ft (0.91 m) max length.
42、TABLE 4 Permissible Variations in Length of Rods and BarsRandom mill lengths:Hot-worked 6 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)ACold-worked 6 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
43、).Multiple lengths furnished 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 for cutting, unless otherwise specified. At the manufacturersoption, individual specified unit lengths may be furnished.Nomina
44、l lengths specified nominal lengths having a range of not less than 2 ft (610 mm) with no short lengths allowedBCut lengths a 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 in diameter or distance
45、between parallel surfaces. For larger sizes,the permissible variation shall be +14 in. (6.4 mm), 0.AFor 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.BFor cold-worked rods and bars under12 in. (
46、12.7 mm) in diameter or distance between parallel surfaces ordered to nominal or stock lengths with a 2-ft (610-mm) range,at least 93 % of such material shall be within the range specified; the balance may be in shorter lengths but in no case shall lengths less than 4 ft (1220 mm) be furnished.TABLE
47、 5 Mechanical Properties of Rods and BarsAlloy ConditionTensile Strength,min, psi (MPa)Yield Strength(0.2 % offset) min,psi (MPa)Elongation in 2in.or50mm(or4D), min, %UNS N08120 Cold-worked and hot-worked, annealed 90 000 (621) 40 000 (276) 30UNS N08800 Hot worked, as-hot-worked 80 000 (550) 35 000
48、(240) 25ACold-worked and hot-worked, annealed 75 000 (515) 30 000 (205) 30UNS N08810 and UNS N08811 Cold-worked and hot-worked, annealed 65 000 (450) 25 000 (170) 30UNS N08890 Cold-worked and hot-worked, annealed 75 000 (520) 30 000 (205) 35UNS N08800, UNS N08810and UNS N08811Forging qualityBBBAFor
49、hot-worked as-hot-worked rectangular bar516 in. (7.94 mm) and under in thickness the elongation shall be 20 % min.BForging quality is furnished to chemical requirements and surface inspection only. No tensile properties are required.B408063TestRounded Unit for Observed OrCalculated ValueChemical composition,hardness, and tolerances(when expressed in decimals)nearest unit in the last right-and place of figures of the specified limit. If two choicesare possible, as when the digits droppedare exactly a
