1、Designation: B649 06 (Reapproved 2016)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. Scope1.1 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.1
4、.2 ASTM International has adopted definitions wherebysome grades, such as UNS N08904,2previously in thisspecification 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 subcommitte
5、es. 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 inform
6、ation 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 appropriateSafety Data Sheet (
7、SDS) for this product/material as providedby the manufacturer, to establish appropriate safety and healthpractices, and determine the applicability of regulatory limi-tations prior to use.2. Referenced Documents2.1 ASTM Standards:3A479/A479M Specification for Stainless Steel Bars andShapes for Use i
8、n 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 of Metallic
9、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 (UNS)E1473 Te
10、st Methods for Chemical Analysis of Nickel, Co-balt 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. (254 mm)
11、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).3.1.1.1 DiscussionWidths
12、 less than38 in. (9.52 mm) andthicknesses less than316 in. (4.76 mm) are described generallyas flat wire.1This specification 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 Al
13、loys.Current edition approved June 1, 2016. Published June 2016. Originallyapproved in 1981. Last previous edition approved in 2011 as B649 06 (2011).DOI: 10.1520/B0649-06R16.2New designation established in accordance with Practice E527 and SAE J1086,Practice for Numbering Metals and Alloys (UNS).3F
14、or 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 ASTM International, 100 Barr Harbor Drive, PO Box C70
15、0, West Conshohocken, PA 19428-2959. United States13.1.1.2 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,hexagon, and shape wire,12 in. (12.70 mm) and under indiameter or size. Cold-
16、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 allrequirements that are necessary for material ordered to thisspecification.
17、 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 designation and year of issue,4.1.7 Exceptions to the specification or
18、 specialrequirements, 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 conditionexcept as noted in 5.2. UNS N08936 shall be supplied in thecold
19、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 water quenching or fast air cool for UNS N08354,and UNS N08926, or 2010 to 21
20、50F (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 shallconform to the requirements as to chemical compositionprescribed in Table 1.6
21、.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 positively identifythe material.6.2.1 If a product analysis is made, the material
22、 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 inTable 2.8. Dimensions, Weight, and Permissible Variations8.1 BarThe mater
23、ial referred to as bar shall conform tothe variations in dimensions prescribed in Tables 3-11inclusive, as applicable.8.2 WireThe material referred to as wire shall conform tothe permissible variations in dimensions prescribed in Tables12-16 inclusive, as applicable.9. Workmanship, Finish, and Appea
24、rance9.1 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:9.2.1 Scale not removed,9.2.2 Pickled or descaled, or9.2.3 Turned (rounds only
25、).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 furnishedwith one of the following finishes:9.4.1 Cold-drawn,9.4.2 Center
26、less 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 0.015Manganese, max 4.006.00 1.00 2.0 1.00 2.00 2.0Phosphorus, max 0.025 0.045 0.020
27、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 31.035.0Molybdenum 5.006.00 6.07.0 6.07.0 7.08.0 6.07.0 0.502.0Copper 0.50
28、 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 (2016)210. Sampling10.1 Lots for Chemical Analysis and Mechanical Testing:10.1.1 A lot for chemical analysis shall consist of one heat.10.1.2 Alot f
29、or 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 identified by heat, a lot shall consistof not more than 500 lb (227 kg) of material
30、 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 or subsequent processing.10.2.2 If the manufacturer determines that the mat
31、erialmeets 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 purchaser.10.3 Sampling for Mechanical Tests:10.3.1 A sample of the material
32、 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 lengths may request on thepurchase order additional material of adequate size
33、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 10.1.2.11.2.1 If any specimens selected to represent any heat fail tomeet any of the t
34、est 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 selected in the longitu-dinal direction. The tension test specimens shall
35、 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 accordance with the follow-ing methods:Test ASTM DesignationsChemical anal
36、ysis 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 calculatedvalue shall be rounded as indicated in accordance with theroundin
37、g 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 yield strength nearest 1000 psi (7 MPa)Elongation nearest 1 %14. Inspection
38、14.1 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 to the requirements ofthis specification may be rejected. Rejection should
39、 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 in the contract or purchaseorder, a manufacturers certification that the
40、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 furnished at the time ofshipment.17. Packaging and Package Marking17.1 MarkingEa
41、ch 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, grade, condition, specification number, and sizeat the manufacturers discr
42、etion.TABLE 2 Mechanical Property RequirementsAAlloyCold Finished 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 (6
43、50) 40 000 (270) 40AUNS N08926 94 000 (650) 43 000 (295) 35AUNS 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 properti
44、es are required on forging quality.BUNS N08936 shall be supplied in the cold drawn condition only.CFor cold finished and annealed wire only, tensile strength 90 000 to 120 000 psi(620 to 830 MPa).B649 06 (2016)317.2 PackagingBars or wire shall be bundled or boxed insuch a manner as to assure safe de
45、livery to their destinationwhen properly transported by any common carrier.TABLE 3 Permissible Variations in Size of Hot-Finished 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)
46、 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 (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 11
47、8 (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 (0.41)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)
48、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) to 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)
49、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 same cross section of a square bar, each dimension being the distance between opposite faces.CSize tolerances have not been evolved for rounds in the size range from14 to5
