1、Designation: B 756 00 (Reapproved 2006)Standard Specification forNickel-Chromium-Molybdenum-Tungsten Alloy (UNSN06110) Rod and Bar1This standard is issued under the fixed designation B 756; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, 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-chromium-molybdenum-tungsten (UNS N06110)2in the form of hot-work
3、ed rod and bar and cold-worked rod in the conditionsshown in Table 1.1.2 The values stated in inch-pound units are to be regardedas the standards. The SI units in parentheses are provided forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated
4、with 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 dete
5、rmine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B 755 Specification for Nickel-Chromium-Molybdenum-Tungsten Alloys (UNS N06110) Plate, Sheet, and StripB 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, N
6、ickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 527 Practice for Numbering Metals and Alloys (UNS)E 1473 Test Methods for Chemical Analysis of Nickel,Cobalt, and
7、High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bar, nmaterial of rectangular (flats) or square solidsection up to and including 10 in. (254 mm) in width and18 in.(3.2 mm) and over in thickness in straight lengths.3.1.1.1 DiscussionHot-worked rectangular
8、 bar in widths10 in. and under may be furnished as hot-rolled plate withsheared or cut edges in accordance with Specification B 755,provided the mechanical property requirements of Specifica-tion B 755 are met.3.1.2 rod, nmaterial of round solid section furnished instraight lengths.4. Ordering Infor
9、mation4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for the safe and satisfactoryperformance of material ordered under this specification.Examples of such requirements include, but are not limited to,the following:4.1.1 ASTM Designation.4.1.2 UNS Number.
10、4.1.3 SectionRod (round) or bar (square or rectangular).4.1.4 DimensionsDimensions including length.4.1.5 Condition (see Appendix).4.1.6 Finish (Section 8).4.1.7 QuantityFeet, (or metres) or number pieces.4.1.8 CertificationState if certification is required (seeSection 15).1This specification is un
11、der 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 June 1, 2006. Published June 2006. Originallyapproved in 1986. Last previous edition approved in 200
12、0 as B 756 00.2New designation established in accordance with Practice E 527 and SAEJ1086, Recommended 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 ASTMStand
13、ards volume information, refer to the standards Document Summary page onthe ASTM website.TABLE 1 Mechanical PropertiesCondition and Diameteror Distance BetweenParallel Surfaces in.(mm)TensileStrengthmin, ksi(MPa)YieldStrength(0.2%Offset),min, ksi(MPa)Elongationin2in.or 50 mmor 4D, min,%Cold-worked r
14、ods andhot-worked rod and bar,annealed:Up to 4 (102), incl 95 (655) 45 (310) 60Over 4 (102) to 10 (254), incl 90 (621) 40 (276) 50Forging quality (all sizes)AAAAForging quality is furnished to chemical requirements and surface inspectiononly. No tensile properties are required.1Copyright ASTM Intern
15、ational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.9 Samples for Product (Check) AnalysisStatewhether samples for product (check) analysis should be fur-nished (see 5.2).4.1.10 Purchaser Inspection (see Section 13)If purchaserwishes to witness test or in
16、spection of material at place ofmanufacture, the purchase order must so state indicating whichtest or inspections are to be witnessed.5. Chemical Composition5.1 The material shall conform to the composition limitsspecified in Table 2.5.2 If a product (check) analysis is performed by thepurchaser, th
17、e material shall conform to the product (check)analysis variations in accordance with Specification B 880.6. Mechanical and Other Properties6.1 Mechanical PropertiesThe material shall conform tothe mechanical properties specified in Table 1.7. Dimensions and Permissible Variations7.1 Diameter, Thick
18、ness, or WidthThe permissible varia-tions from the specified dimensions of cold worked rod shall beas prescribed in Table 3, and of hot-worked rod and bar asprescribed in Table 4.7.2 Out-of-RoundHot-worked rods and cold-worked rods(except forging quality) all sizes, in straight lengths, shall notbe
19、out-of-round by more than one half the total permissiblevariations in diameter shown in Table 3 and Table 4, except forhot-worked rods12 in. (12.7 mm) in diameter and under, whichmay be out-of-round by the total permissible variations indiameter shown in Table 4.7.3 Machining Allowances for Hot-Work
20、ed MaterialsWhen the surfaces of hot-worked products are to be machined,the allowances prescribed in Table 5 are recommended fornormal machining operations.7.4 LengthThe permissible variations in length of cold-worked and hot-worked rod and bar shall be as prescribed inTable 6.7.4.1 Rods and bars or
21、dered to random or nominal lengthswill be furnished with either cropped or saw-cut ends; materialordered to cut lengths will be furnished with square saw-cut ormachined ends.7.5 Straightness:7.5.1 The permissible variations in straightness of cold-worked rod as determined by the departure from strai
22、ghtnessshall be as prescribed in Table 7.7.5.2 The permissible variations in straightness of hot-worked rod and bar as determined by the departure fromstraightness shall be as specified in Table 8.8. Workmanship, Finish, and Appearance8.1 The material shall be uniform in quality and condition,smooth
23、, commercially straight or flat, and free of injuriousimperfections.9. Sampling9.1 Lot Definition:9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 A lot for mechanical properties testing shall consist ofall material from the same heat, nominal diameter or thickness,and condition.9.1
24、.2.1 Where material cannot be identified 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 lb shall be considered as one lot.TABLE 2 Chemical RequirementsElementCompositionLimits,%C 0.15 maxMn 1.0 maxSi
25、1.0 maxP 0.015 maxS 0.015 maxCr 28.0 min33.0 maxCb 1.0 maxCo (if determined) 1.0 maxMo 9.0 min12.0 maxFe 1.0 maxAl 1.0 maxTi 1.0 maxW 1.0 min4.0 maxNiA51.0 minCu 0.50 maxAElement shall be determined arithmetically by difference.TABLE 3 Permissible Variations in Diameter of Cold-Worked RodSpecified D
26、imensions,in. (mm)Permissible Variations from SpecifiedDimension, in. (mm)+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), incl0.0015 (0.04) 0.003 (0.08)Over 11516 (49.2) to 212
27、 (63.5),incl0.002 (0.05) 0.004 (0.10)TABLE 4 Permissible Variations in Diameter or DistanceBetween Parallel Surfaces of Hot-Worked Rod and BarSpecified Dimension, in. (mm)APermissible Variations fromSpecified Dimensions, in. (mm)+Rod and bar, hot-worked:1 (25.4) and under 0.016 (0.41) 0.016 (0.41)Ov
28、er 1 (25.4) to 2 (50.8), incl 0.031 (0.79) 0.016 (0.41)Over 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)1 (25.4) and overForging quantity rod:B0.005 (0.13)0.031 (0.79)0.005 (0.13)0Under 1 (25.4)1 (25.4) and ov
29、er0.005 (0.13)0.031 (0.79)0.005 (0.13)0ADimensions apply to diameter of 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 depthof these spot ground areas shall not exceed 3
30、 % of the diameter of the rod.B 756 00 (2006)29.2 Test Material Selection:9.2.1 Chemical AnalysisRepresentative samples fromeach lot shall be taken during pouring or subsequent process-ing.9.2.1.1 Product (check) analysis shall be wholly the respon-sibility of the purchaser.9.2.2 Mechanical Properti
31、esSamples of the material toprovide test specimens for mechanical properties shall be takenfrom such locations in each lot as to be representative of thatlot.10. Number of Tests10.1 Chemical AnalysisOne test per lot.10.2 TensionOne test per lot.11. Specimen Preparation11.1 Tension test specimens sha
32、ll be taken from material inthe final condition and tested in the direction of fabrication.11.1.1 All rod and bar shall be tested in full cross sectionsize when possible. When a full cross section size test cannotbe performed, the largest possible round specimen shown inTest Methods E8shall be used.
33、 Longitudinal strip specimensshall be prepared in accordance with Test Methods E8 forrectangular bar up to12 in. (12.7 mm), inclusive, in thicknessesthat are too wide to be pulled full size.12. Test Methods12.1 The chemical composition, mechanical, and otherproperties of the material as enumerated i
34、n this specificationshall be determined in case of disagreement, in accordancewith the following methods:TABLE 5 Normal Machining Allowances for Hot-Worked MaterialFinished-Machined Dimensions forFinishes as Indicated Below,in. (mm)ANormal Machining Allowance,in. (mm)On Diameter,for RodsDistanceBetw
35、een ParallelSurfaces ofSquare BarsFor Rectangular BarOnThicknessOnWidthHot-workedBUp 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),
36、 incl14 (6.4) . .316 (4.8)Over 31316 (96.8)14 (6.4) . .38 (9.5)Hot-worked rods, rough-turned or roughground:C1516 to 4 (23.8 to 101.6), incl in diameter116 (1.6) . . .Over 4 to 12 (101.6 to 304.8), incl indiameter18 (3.2) . . .ADimensions apply to diameter of rods, to distance between parallel surfa
37、ces 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 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 in longer
38、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.TABLE 6 Per
39、missible Variations in Length of Rods and BarsRandom Mill Lengths:Hot-worked6 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-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 le
40、ngthsFurnished in multiples of a specified unit length, within the length limits indicated above. For each multiple, an allowance of14 in. (6.4 mm) willbe made for cutting, unless otherwise specified. At the manufacturers option, individual specified unit lengths may be furnished.Nominal lengthsSpec
41、ified 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 diameteror distance between parall
42、el 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 rod under12 in. (12.7 mm) in diameter or
43、dered to nominal 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.TABLE 7 Permissible Variations in Straightness of Cold-WorkedRodsS
44、pecified Diameter,in. (mm)APermissible Variations,in. (mm)Depth of Chord:12 (12.7) to 212 (63.5), incl0.030 (0.76) per ft(305 mm) of lengthAMaterial under12 in. (12.7 mm) shall be reasonably straight and free of sharpbends and kinks.TABLE 8 Permissible Variations in Straightness of Hot-WorkedRods an
45、d BarsAFinishPermissible Variations,in./ft (mm/m)BRods and bars, hot-worked 0.050 (4.2)CRounds-hot-worked, roughground or rough turned0.050 (4.2)CANot applicable to forging quality.BMaterial under12 in. (12.7 mm) shall be reasonably straight and free of sharpbends and kinks.CThe maximum curvature (d
46、epth of chord) shall not exceed the values indicatedmultiplied by the length in feet.B 756 00 (2006)3Test ASTM DesignationChemical analysis E 1473Tension E8Rounding procedure E2912.2 For purposes of determining compliance with thespecified limits for requirements of the properties listed in thefollo
47、wing table, an observed value or a calculated value shallbe rounded as indicated below, in accordance with the round-ing method of Practice E29:Test Rounded Unit for Observed OrCalculated ValueChemical composition and tolerance(when expressed in decimals)nearest unit in the last right-handplace of f
48、igures of the specifiedlimit. If two choices are possible,as when the digits dropped areexactly a 5, or a 5 followed onlyby zeros, choose the one endingin an even digit with zero de-fined as an even digit.Tensile strength and yield strength nearest 1000 psi (6.9 MPa)Elongation nearest 1 %13. Inspect
49、ion13.1 Inspection of the material shall be made as agreed uponbetween the manufacturer and the purchaser as part of thepurchase contract.14. Rejection and Rehearing14.1 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 tests, the producer orsupplier may make the claim for a rehearing.15. Certification15.1 When specified in the purchase order
