1、Designation: B649 06 (Reapproved 2011)Standard Specification forNi-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925,UNS N08031, UNS N08354, and UNS N08926), andCr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire,and Ni-Cr-Fe-Mo-N Alloy (UNS N08936) Wire1This standard is issued under the fixed designati
2、on B649; 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 rea
3、pproval.1. Scope*1.1 This specification covers nickel-iron-chromium-molybdenum-copper-nitrogen alloys (UNS N08925, UNSN08031, UNS N08354, and UNS N08926), and chromium-nickel-iron-nitrogen low-carbon alloy (UNS R20033) bar andwire, and nickel-chromium-iron-molybdenum-nitrogen alloy(UNS N08936) wire.
4、1.2 ASTM International has adopted definitions wherebysome grades, such as UNS N08904, previously in this speci-fication were recognized as stainless steels, because thosegrades have iron as the largest element by mass percent. Suchgrades are under the oversight of ASTM Committee A01 andits subcommi
5、ttees. The products of N08904 previously coveredin this specification are now covered by Specifications A479/A479M and A484/A484M.1.3 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 inf
6、ormation onlyand are not considered standard.1.4 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 including those identified in the appropriateMaterial Safety
7、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:2A479/A479M Specification for Stainless Steel Bars andShape
8、s for Use in Boilers and Other Pressure VesselsA484/A484M Specification for General Requirements forStainless Steel Bars, Billets, and ForgingsB880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing o
9、f Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (U
10、NS)E1473 Test Methods for Chemical Analysis of Nickel,Cobalt, and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard: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.
11、 (254 mm) inclusive in width,18 in. (3.18 mm) and over in thickness. Cold-finished rounds,squares, octagons, hexagons, and shapes: over12 in. (12.70mm) in diameter or size. Cold-finished flats:38 in. (9.52 mm)and over in width (see 3.1.1.1) and18 in. and over in thickness(see 3.1.1.2).1This specific
12、ation 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 May 1, 2011. Published May 2011. Originallyapproved in 1981. Last previous edition approv
13、ed in 2006 as B649 - 06. DOI:10.1520/B0649-06R11.* New designation established in accordance with Practice E527 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 A
14、nnual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.1.1
15、 DiscussionWidths less than38 in. (9.52 mm) andthicknesses less than316 in. (4.76 mm) are described generallyas flat wire.3.1.1.2 DiscussionThickness18 in. to under316 in. (3.18mm to under 4.76 mm) can be cold-rolled strip as well as bar.3.1.2 wire, ncold-finished only: round, square, octagon,hexago
16、n, and shape wire,12 in. (12.70 mm) and under indiameter or size. Cold-finished only: flat wire,316 in. to under38 in. (4.76 mm to under 9.52 mm) in width, 0.010 to under316in. (0.25 to under 4.76 mm) in thickness.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allreq
17、uirements that are necessary for material ordered to thisspecification. Examples of such requirements include, but arenot limited to, the following:4.1.1 Quantity (weight or number of pieces),4.1.2 Alloy name or UNS number,4.1.3 Form (bar or wire),4.1.4 Dimensions,4.1.5 Finish (Section 9),4.1.6 ASTM
18、 designation and year of issue,4.1.7 Exceptions to the specification or special require-ments, and4.1.8 Certification (Section 16). State if certification isrequired.5. Materials and Manufacture5.1 Heat TreatmentWith the exception of UNS N08936,the material shall be supplied in the solution-treated
19、conditionexcept as noted in 5.2. UNS N08936 shall be supplied in thecold drawn condition.NOTE 1The recommended heat treatment shall consist of heating to atemperature of 2010 to 2100F (1100 to 1150C) followed by waterquenching for UNS N08925, UNS N08031, 1975 to 2150F (1080 to1180C) followed by wate
20、r quenching or fast air cool for UNS N08354,and UNS N08926, or 2010 to 2150F (1100 to 1180C) followed by waterquenching or fast air cool for UNS R20033.5.2 The heat treatment shall be waived for forging qualitymaterial.6. Chemical Composition6.1 The material sampled in accordance with 10.2 shallconf
21、orm to the requirements as to chemical compositionprescribed in Table 1.6.2 Product AnalysisProduct analysis may be made by thepurchaser to verify the identity of the finished material repre-senting each heat or lot. Such analysis may be made by any ofthe commonly accepted methods that will positive
22、ly identifythe material.6.2.1 If a product analysis is made, the material shallconform to the product check analysis variation per Specifica-tion B880.7. Mechanical and Other Requirements7.1 Tensile RequirementsThe material shall conform tothe requirements as to the mechanical property prescribed in
23、Table 2.8. Dimensions, Weight, and Permissible Variations8.1 BarThe material referred to as bar shall conform tothe variations in dimensions prescribed in Tables 3-11 inclu-sive, as applicable.8.2 WireThe material referred to as wire shall conform tothe permissible variations in dimensions prescribe
24、d in Tables12-16 inclusive, as applicable.9. Workmanship, Finish and Appearance9.1 The material shall be uniform in quality and condition,smooth, commercially straight or flat, and free of injuriousdefects.9.2 Bars in the hot-finished condition may be furnished withone of the following finishes:9.2.
25、1 Scale not removed,9.2.2 Pickled or descaled, or9.2.3 Turned (rounds only).9.3 Bars in the cold-finished condition may be furnishedwith one of the following finishes:9.3.1 Cold-drawn,9.3.2 Centerless ground (rounds only), or9.3.3 Polished (rounds only).9.4 Wire in the cold-finished condition may be
26、 furnishedwith one of the following finishes:9.4.1 Cold-drawn,9.4.2 Centerless ground (rounds only),9.4.3 Polished (rounds only), or9.4.4 Pickled.TABLE 1 Chemical RequirementsElementUNS N08936 UNS N08925 UNS N08031 UNS N08354 UNS N08926 UNS R20033Carbon, max 0.020 0.020 0.015 0.030 0.020 0.015Mangan
27、ese, max 4.006.00 1.00 2.0 1.00 2.00 2.0Phosphorus, max 0.025 0.045 0.020 0.030 0.03 0.02Sulfur, max 0.010 0.030 0.010 0.010 0.01 0.01Silicon, max 0.50 0.50 0.3 1.00 0.5 0.50Nickel 33.0035.00 24.0026.00 30.032.0 34.036.0 24.0026.00 30.033.0Chromium 26.0028.00 19.0021.00 26.028.0 22.024.0 19.0021.00
28、31.035.0Molybdenum 5.006.00 6.07.0 6.07.0 7.08.0 6.07.0 0.502.0Copper 0.50 0.81.5 1.01.4 . 0.51.5 0.301.20Nitrogen 0.300.50 0.10.2 0.150.25 0.170.24 0.150.25 0.350.60Iron balance balance balance balance balance balanceB649 06 (2011)210. Sampling10.1 Lots for Chemical Analysis and Mechanical Testing:
29、10.1.1 A lot for chemical analysis shall consist of one heat.10.1.2 Alot for testing and inspection purposes shall consistof material from one heat of the same condition (temper),finish, and cross section, and in no case more than 30 000 lb(13 600 kg) in mass.NOTE 2Where material cannot be identifie
30、d by heat, a lot shall consistof not more than 500 lb (227 kg) of material in the same thickness andcondition, except that for pieces weighing over 500 lb, only one specimenshall be taken.10.2 Sampling for Chemical Analysis:10.2.1 A representative sample shall be taken from eachheat during pouring o
31、r subsequent processing.10.2.2 If the manufacturer determines that the materialmeets the chemical requirements during pouring or subsequentprocessing, he shall not be required to sample and analyze thefinished product.10.2.3 Product analysis, if performed, shall be wholly theresponsibility of the pu
32、rchaser.10.3 Sampling for Mechanical Tests:10.3.1 A sample of the material to provide test specimensfor mechanical tests shall be taken from such a location in eachlot as to be representative of that lot.10.3.2 When samples are to be taken after delivery, thepurchaser of material ordered to cut leng
33、ths may request on thepurchase order additional material of adequate size to providesample coupons for inspection purposes.11. Number of Tests11.1 One chemical analysis shall be made on each lot inaccordance with 10.1.1.11.2 One tension test shall be made on each lot in accor-dance with 10.1.2.11.2.
34、1 If any specimens selected to represent any heat fail tomeet any of the test requirements, the material represented bysuch specimens may be reheat-treated and resubmitted for test.12. Specimen Preparation12.1 Tension test specimens shall be taken from materialafter final heat treatment and shall be
35、 selected in the longitu-dinal direction. The tension test specimens shall conform to theappropriate sections of Test Methods E8.13. Test Methods13.1 The chemical composition and mechanical propertiesof the material as enumerated in this specification shall, in caseof disagreement, be determined in
36、accordance with the follow-ing methods:Test ASTM DesignationsChemical analysis E1473ATension E8Rounding procedure E29Method of sampling E55AIron shall be determined arithmetically by difference.13.2 For purposes of determining compliance with thelimits in this specification, an observed value or a c
37、alculatedvalue shall be rounded as indicated in accordance with therounding method of Practice E29.RequirementsRounded Unit for Observed orCalculated ValueChemical composition nearest unit in the last right-hand(when expressed in decimals) place of figures of the specifiedlimitTensile strength and y
38、ield strength nearest 1000 psi (7 MPa)Elongation nearest 1 %14. Inspection14.1 Inspection of the material by the purchaser shall bemade as agreed upon between the purchaser and the seller aspart of and set forth in the purchase contract.15. Rejection and Rehearing15.1 Material that fails to conform
39、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.16. Certification16.1 If required by the purchaser
40、 in the contract or purchaseorder, a manufacturers certification that the material wasmanufactured and tested in accordance with this specificationshall be furnished at the time of shipment.16.2 If required by the purchaser in the contract or purchaseorder, a copy of the test results shall be furnis
41、hed at the time ofshipment.17. Packaging and Package Marking17.1 MarkingEach bundle or box shall be tagged properlywith metal tags showing heat number, grade, condition, speci-fication number, and size to assure proper identification.17.1.1 Large diameter bars may be line marked showingheat number,
42、grade, condition, specification number, and sizeat the manufacturers discretion.17.2 PackagingBars or wire shall be bundled or boxed insuch a manner as to assure safe delivery to their destinationwhen properly transported by any common carrier.TABLE 2 Mechanical Property RequirementsAAlloyCold Finis
43、hed and Hot Finished Annealed,BAll Sizes Except Where NotedTensile Strength,min, psi (MPa)CYield Strengthmin, psi (MPa)CElongation in2 in. (50.8mm), min, %ForgingQuality,AllSizesUNS N08925 87 000 (600) 43 000 (300) 40AUNS N08031 94 000 (650) 40 000 (270) 40AUNS N08926 94 000 (650) 43 000 (295) 35AUN
44、S N08354 93 000 (640) 43 000 (295) 40AUNS R20033 109 000 (750) 55 000 (380) 40AUNS N08936Up to 0.063 in.(1.60 mm) dia.,incl.280 000 (1931) 240 000 (1655) . .Over 0.063 in.(1.60 mm) dia.250 000 (1724) 220 000 (1517) . .ANo tensile properties are required on forging quality.BUNS N08936 shall be suppli
45、ed in the cold drawn condition only.CFor cold finished and annealed wire only, tensile strength 90 000 to 120 000psi (620 to 830 MPa).B649 06 (2011)318. Keywords18.1 UNS N08031; UNS N08925; UNS N08926; UNSN08354; UNS N08936; UNS R20033; bar; wireTABLE 3 Permissible Variations in Size of Hot-Finished
46、 Round and Square BarsPermissible Variations from Specified Size, in. (mm)Out-of-RoundAor Out-of-Square,Bin. (mm)Over Under14 (6.35) to516 (7.94), inclC,DEEEOver516 (7.94) to716 (11.11), inclC,D0.006 (0.15) 0.006 (0.15) 0.009 (0.23)Over716 (11.11) to58 (15.88), inclC,D0.007 (0.18) 0.007 (0.18) 0.010
47、 (0.25)Over58 (15.88) to78 (22.22), incl 0.008 (0.20) 0.008 (0.20) 0.012 (0.30)Over78 (22.22) to 1 (25.40), incl 0.009 (0.23) 0.009 (0.23) 0.013 (0.33)Over 1 (25.40) to 118 (28.58), incl. 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)Over 118 (28.58) to 114 (31.75), incl 0.011 (0.28) 0.011 (0.28) 0.016 (0.4
48、1)Over 114 (31.75) to 138 (34.92), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)Over 138 (34.92) to 112 (38.10), incl 0.014 (0.36) 0.014 (0.36) 0.021 (0.53)Over 112 (38.10) to 2 (50.80), incl164 (0.40)164 (0.40) 0.023 (0.58)Over 2 (50.80) to 212 (63.50), incl132 (0.79) 0 0.023 (0.58)Over 212 (63.50) t
49、o 312 (88.90), incl364 (1.19) 0 0.035 (0.89)Over 312 (88.90) to 412 (114.30), incl116 (1.59) 0 0.046 (1.17)Over 412 (114.30) to 512 (139.70), incl564 (1.98) 0 0.058 (1.47)Over 512 (139.70) to 612 (165.10), incl18 (3.18) 0 0.070 (1.78)Over 612 (165.10) to 8 (203.20), incl532 (3.97) 0 0.085 (2.18)AOut-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section.BOut-of-square section is the difference in the two dimensions at the sam
