1、Designation: B 672 02 (Reapproved 2007)Standard Specification forNickel-Iron-Chromium-Molybdenum-Columbium StabilizedAlloy (UNS N08700) Bar and Wire1This standard is issued under the fixed designation B 672; the number immediately following the designation indicates the year oforiginal adoption or,
2、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.1. Scope1.1 This specification covers nickel-iron-chromium-molybdenum-columbium stabilized a
3、lloy (UNS N08700)* bar.1.2 The values stated in inch-pound units are to be regardedas the standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to become familiarwith all hazards includi
4、ng those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 26
5、2 Practices for Detecting Susceptibility to Intergranu-lar Attack in Austenitic Stainless SteelsB 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 Using Sig
6、nificant Digits in Test Data toDetermine Conformance with SpecificationsE 1473 Test Methods for Chemical Analysis of Nickel,Cobalt, and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard: Theterms bar and wire as used in this specification are described asfollows
7、:3.1.1 bars, nhot-finished rounds, squares, octagons, andhexagons:14 in. (6.35 mm) and over in diameter or size.Hot-finished flats:14 in. to 10 in. (254 mm), inclusive, in width,18 in. (3.18 mm) and over in thickness. Cold-finished rounds,squares, octagons, hexagons, and shapes: over12 in. (12.7 mm)
8、in diameter or size. Cold-finished flats:38 in. (9.52 mm) andover in width (see 3.1.1),18 in. and over in thickness.(1) Thickness 0.125 in. to under 0.187 in. (3.18 mm to under4.76 mm) can be cold-rolled as well as bar.3.1.2 wire, nCold-finished only: round, square, octagon,hexagon, and shape wire,1
9、2 in. and under in diameter or size.Cold-finished only: flat wire,316 in. (4.76 mm) to under 0.375in. (9.52 mm) in width, 0.010 in. (0.254 mm) to under316 in.thickness.4. Ordering Information4.1 Orders for material under this specification shouldinclude the following information:4.1.1 Quantity (weig
10、ht or number of pieces).4.1.2 Name of material or UNS N08700.4.1.3 Form (bar).4.1.4 Dimensions.4.1.5 Finish.4.1.6 ASTM designation and year of issue.4.1.7 Corrosion TestState if intergranular corrosion test isrequired (Supplementary Requirements).4.1.8 Certification or Test ReportsState if certifica
11、tion ortest reports are required (Section 14).NOTE 1A typical ordering description is as follows: 200 bars, UNSN08700, 1 in. (25.4 mm) round by 10 to 14 ft (3.0 to 4.3 m), centerlessground, ASTM B 672 dated_.5. Materials and Manufacture5.1 Heat TreatmentThe final treatment shall be a solutionanneal.
12、 Straightening or cold finishing, or both, may beperformed after the final solution annealing operation. Colddrawing to more than a minor sizing reduction (preferredmaximum 5 % in area) after final solution annealing is notrecommended.1This specification is under the jurisdiction of ASTM Committee B
13、02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1974. Last previous edition approved in 2002 as B 672 02.* New designation esta
14、blished in accordance with ASTM E 527 and SAE J1086,Practice for Numbering Metals and Alloys (UNS).2For 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 Doc
15、ument Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 2The recommended solution anneal consists of heating to aminimum temperature of 2000F (1090C) and cooling rapidly to roomtemperature.6. Chemic
16、al Composition6.1 Heat analysis, on samples in accordance with 11.2, shallconform to the requirements as to chemical compositionprescribed in Table 1.6.2 If a product analysis is performed by the purchaser, thematerial shall conform to the composition limits within theproduct analysis variation pres
17、cribed in Specification B 880.7. Mechanical Requirements7.1 The material shall conform to the requirements as to themechanical property prescribed in Table 2.8. Dimensions and Permissible Variations8.1 BarBars shall conform to the variations in dimensionsprescribed in Tables 3-11, inclusive, as appl
18、icable.9. Workmanship, Finish, and Appearance9.1 The product shall be uniform in quality and condition,smooth, commercially straight or flat, and free of injuriousimperfections.10. Sampling10.1 LotDefinition:10.1.1 A lot for chemical analysis shall consist of one heat.10.1.2 A lot for mechanical pro
19、perties or corrosion testing(Supplementary Requirement S1) shall consist of all materialfrom a heat and cross-sectional size, heat treated by the samepractice.10.2 Test Material Selection:10.2.1 Chemical AnalysisA representative sample fromeach lot shall be taken during pouring or subsequent process
20、-ing.10.2.1.1 Product Check Analysis shall be wholly the respon-sibility of the purchaser.10.2.2 Mechanical Properties and Corrosion Test (Supple-mentary Requirement S1)Samples of the material to providetest specimens shall be taken from such locations in each lot asto be representative of that lot.
21、11. Number of Tests11.1 Chemical AnalysisOne test per lot.11.2 Mechanical Properties and Corrosion Test (Supple-mentary Requirement S1)One test per lot.12. Test Methods12.1 Determine the chemical composition, mechanicalproperties, and corrosion resistance of the material as enumer-ated in this speci
22、fication, in case of disagreement, in accor-dance with the following methods:TestASTMDesignationCorrosion test (Supplementary Requirement S1) A 262, Practice CChemical analysis E 1473ATension E8Rounding procedure E29AIron shall be determined arithmetically by difference.13. Rejection and Rehearing13
23、.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection should be reportedto the producer or supplier promptly and in writing. In case ofdissatisfaction with the results of the test, the producer orsupplier may make claim for a rehearing.14. Certificatio
24、n14.1 When specified in the purchase order or contract, amanufacturers certification shall be furnished to the purchaserstating that material has been manufactured, tested, and in-spected in accordance with this specification, and that the testresults on representative samples meet specification req
25、uire-ments. When specified in the purchase order or contract, areport of the test results shall be furnished.15. Product Marking15.1 Each bundle, box, or bar shall be properly tagged withmetal tags showing heat number, UNS number, condition,specification number, and size to assure proper identificat
26、ion.16. Packaging and Package Marking16.1 Bars shall be bundled or boxed in such a manner as toassure safe delivery to their destination when properly trans-ported by any common carrier.17. Keywords17.1 bar; nickel-iron-chromium-molybdenum-columbium;UNS N08700TABLE 1 Chemical RequirementsElement Com
27、position, %Nickel 24.0 to 26.0Iron remainderAChromium 19.0 to 23.0Molybdenum 4.3 to 5.0Columbium 8 3 carbon to 0.40Carbon, max 0.04Silicon, max 1.00Manganese, max 2.00Phosphorus, max 0.040Sulfur, max 0.030Copper, max 0.50ADetermined arithmetically by difference.B 672 02 (2007)2TABLE 2 Mechanical Pro
28、perty RequirementsConditionMaterialDimensions, in.TestDirectionTensile Strength,min, ksi (MPa)Yield Strength(0.2 % Offset),min, ksi (MPa)Elongation in 2 in.or 50.8 mm,or 4 D,min,%Reduction ofArea, min,%Annealed, hot-finishedor cold-finishedAll Longitudinal 80 (550) 35 (240) 30.0 50.0Annealed, hot-fi
29、nishedor cold-finishedWidths, 3 and overATransverse 80 (550) 35 (240) 25.0 40.0AIf the material diameter or width is over 3 in. (76.2 mm), material may be tensile tested in the transverse direction.TABLE 3 Permissible Variations in Size of Hot-Rolled Round and Square BarsPermissible Variations from
30、Specified Size,in. (mm)Out-of-RoundAor Out-of-Square,Bin. (mm)Over Under0.250 (6.35) to 0.312 (7.94), inclC,DEEEOver 0.312 (7.94) to 0.438 (11.11), inclC,D0.006 (0.15) 0.006 (0.15) 0.009 (0.23)Over 0.438 (11.11) to 0.625 (15.88), inclC,D0.007 (0.18) 0.007 (0.18) 0.010 (0.25)Over 0.625 (15.88) to 0.8
31、75 (22.22), incl 0.008 (0.20) 0.008 (0.20) 0.012 (0.30)Over 0.875 (22.22) to 1.000 (25.40), incl 0.009 (0.23) 0.009 (0.23) 0.013 (0.33)Over 1.000 (25.40) to 1.125 (28.58), incl 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)Over 1.125 (28.58) to 1.250 (31.75), incl 0.011 (0.28) 0.011 (0.28) 0.016 (0.41)Over
32、1.250 (31.75) to 1.375 (34.92), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)Over 1.375 (34.92) to 1.500 (38.10), incl 0.014 (0.36) 0.014 (0.36) 0.021 (0.53)Over 1.500 (38.10) to 2.000 (50.80), incl 0.016 (0.40) 0.016 (0.40) 0.023 (0.58)Over 2.000 (50.80) to 2.500 (63.50), incl 0.031 (0.79) 0 0.023 (0
33、.58)Over 2.500 (63.50) to 3.500 (88.90), incl 0.047 (1.19) 0 0.035 (0.89)Over 3.500 (88.90) to 4.500 (114.30), incl 0.063 (1.59) 0 0.046 (1.17)Over 4.500 (114.30) to 5.500 (139.70), incl 0.078 (1.98) 0 0.058 (1.47)Over 5.500 (139.70) to 6.500 (165.10), incl 0.125 (3.18) 0 0.070 (1.78)Over 6.500 (165
34、.10) to 8.000 (203.20), incl 0.156 (3.97) 0 0.085 (2.18)AOut-of-round is the difference between the minimum diameters of the bar, measured at the same cross section.BOut-of-square section is the difference in the two dimensions at the same section of a square bar, each dimension being the distance b
35、etween opposite faces.CSize tolerances have not been evolved for rounds in the size range of 0.250 to 0.312 in. (6.35) to 7.94 mm), inclusive. Size tolerances have not been evolved for roundsections in the size range of 0.250 in. to approximately 0.625 in. (15.88 mm) in diameter which are produced o
36、n rod mills in coils.DVariations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills.ESquares in this size are not produced as hot-rolled products.TABLE 4 Permissible Variations in Size of Hot-Rolled Hexagonal and Octagonal BarsSpecified Sizes M
37、easured Between OppositeSides, in. (mm)Permissible Variations from Specified Size,in. (mm)Maximum Difference in3 Measurements for Hex-agons only, in. (mm)Over Under0.250 (6.35) to 0.500 (12.70), incl 0.007 (0.18) 0.007 (0.18) 0.011 (0.28)Over 0.500 (12.70) to 1.000 (25.40), incl 0.010 (0.25) 0.010 (
38、0.25) 0.015 (0.38)Over 1.000 (25.40) to 1.500 (38.10), incl 0.021 (0.53) 0.021 (0.53) 0.025 (0.64)Over 1.500 (38.10) to 2.000 (50.80), incl 0.031 (0.79) 0.031 (0.79) 0.031 (0.79)Over 2.000 (50.80) to 2.500 (63.50), incl 0.047 (1.19) 0.047 (1.19) 0.047 (1.19)Over 2.500 (63.50) to 3.500 (88.90), incl
39、0.063 (1.59) 0.063 (1.59) 0.063 (1.59)B 672 02 (2007)3TABLE 5 Permissible Variations in Thickness and Width For Hot-Rolled Flat BarsSpecified Width, in.(mm)Permissible Variations in Thickness for Thickness Given, in. (mm)0.125 (3.18) to 0.500 (12.70),inclOver 0.500 (12.70) to 1.000(25.40), inclOver
40、1.000 (25.40) to 2.000(50.80), inclOver Under Over Under Over UnderTo 1.000 (25.40), incl 0.008 (0.20) 0.008 (0.20) 0.010 (0.25) 0.010 (0.25)Over 1.000 (25.40) to 2.000(50.80), incl0.012 (0.30) 0.012 (0.30) 0.015 (0.38) 0.015 (0.38) 0.031 (0.79) 0.031 (0.79)Over 2.000 (50.80) to 4.000(101.60), incl0
41、.015 (0.38) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.031 (0.79) 0.031 (0.79)Over 4.000 (101.60) to 6.000(152.40), incl0.015 (0.38) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.031 (0.79) 0.031 (0.79)Over 6.000 (152.40) to 8.000(203.20), incl0.016 (0.41) 0.016 (0.41) 0.025 (0.41) 0.025 (0.41) 0.031 (0.79
42、) 0.031 (0.79)Over 8.000 (203.20) to 10.000(254.00), incl0.021 (0.53) 0.021 (0.53) 0.031 (0.79) 0.031 (0.79) 0.031 (0.79) 0.031 (0.79)Over 2.000 (50.80) to 4.000(101.60), inclOver 4.000 (101.60) to 5.000(152.40), inclOver 6.000 (152.40) to 8.000(203.20), inclOver Under Over Under Over UnderTo 1.000
43、(25.40), inclOver 1.000 (25.40) to 2.000(50.80), incl.Over 2.000 (50.80) to 4.000(101.60), incl0.062 (1.57) 0.031 (0.79) . . . .Over 4.000 (101.60) to 6.000(152.40), incl0.062 (1.57) 0.031 (0.79) 0.093 (2.36) 0.062 (1.57) . .Over 6.000 (152.40) to 8.000(203.20), incl0.062 (1.57) 0.031 (0.79) 0.093 (
44、2.36) 0.062 (1.57) 0.125 (3.18) 0.156 (3.96)Over 8.000 (203.20) to 10.000(254.00), incl0.062 (1.57) 0.031 (0.79) 0.093 (2.36) 0.062 (1.57) 0.125 (3.18) 0.156 (3.96)Specified Width, in. (mm)Permissible Variations in Width, in. (mm)Over UnderTo 1.000 (25.40), incl 0.015 (0.38) 0.015 (0.38)Over 1.000 (
45、25.40) to 2.000 (50.80), incl 0.031 (0.79) 0.031 (0.79)Over 2.000 (50.80) to 4.000 (101.60), incl 0.062 (1.57) 0.031 (0.79)Over 4.000 (101.60) to 6.000 (152.40), incl 0.093 (2.36) 0.062 (1.57)Over 6.000 (152.40) to 8.000 (203.20), incl 0.125 (3.18) 0.156 (3.96)Over 8.000 (203.20) to 10.000 (254.00),
46、 incl 0.156 (3.96) 0.187 (4.75)TABLE 6 Permissible Variations in Size of Cold-FinishedRound BarsSpecified Size, in. (mm)Permissible Variations fromSpecified Size, in. (mm)A,BOver UnderOver 0.500 (12.70) to 1.000(25.40), excl0.002 (0.05) 0.002 (0.05)1.000 (25.40) to 1.500(38.10), excl0.0025 (0.06) 0.
47、0025 (0.06)1.500 (38.10) to 4.000(101.60), inclC0.003 (0.08) 0.003 (0.08)AUnless otherwise specified, size tolerances are over and under as shown inTable 7. When required, however, they may be specified all over and nothingunder, or all under and nothing over, or any combination of over and under, i
48、f thetotal spread in size tolerance for a specified size is not less than the total spreadshown in the table.BWhen it is necessary to heat treat or heat treat and pickle after cold finishing,size tolerances are double those shown in the table.CCold-finished bars over 4 in. (101.60 mm) in diameter ar
49、e produced; sizetolerances for such bars have not been evolved.TABLE 7 Permissible Variations in Size of Cold-FinishedHexagonal, Octagonal, and Square BarsSpecified Size, in. (mm)Permissible Vari-ations from SpecifiedSize, in. (mm)AOver UnderOver 0.500 (12.70) to 1.000 (25.40),incl0 0.004 (0.10)Over 1.000 (25.40) to 2.000 (50.80),incl0 0.006 (0.15)Over 2.000 (50.80) to 3.000 (76.20),incl0 0.008 (0.20)Over 3.000 (76.20) 0 0.010 (0.25)AWhen it is necessary to heat treat or heat treat and pickle after cold finishing,size tolerances are double tho
