1、Designation: B688 96 (Reapproved 2014)B688 18Standard Specification forChromium-Nickel-Molybdenum-Iron (UNS N08366 and UNSN08367) Plate, Sheet, and Strip1This standard is issued under the fixed designation B688; the number immediately following the designation indicates the year oforiginal adoption
2、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 reapproval.1. Scope Scope*1.1 This specification covers chromium-nickel-molybdenum-iron UNS N08366 a
3、nd UNS N083672 plate, sheet, and strip for usein corrosive service and heat-resisting applications.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not cons
4、idered standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety DataSheet (MSDS)(SDS) for
5、this product/material as provided by the manufacturer, to establish appropriate safety safety, health, andhealthenvironmental practices, and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized
6、principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3B880 Specification for Genera
7、l Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt AlloysE8/E8M Test Methods for Tension Testing of Metallic MaterialsE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic MaterialsE29 Practice for Using Signi
8、ficant Digits in Test Data to Determine Conformance with SpecificationsE38 Methods for Chemical Analysis of Nickel-Chromium and Nickel-Chromium-Iron Alloys (Withdrawn 1989)4E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness,Superficial
9、 Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb HardnessE354E1473 Test Methods for ChemicalAnalysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, andCobaltNickel, Cobalt and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard
10、:3.1.1 sheet, nmaterial under 316 in. (5 mm) in thickness and 24 in. (610 mm) and over in width.3.1.2 strip, nmaterial under 316 in. (5 mm) in thickness and under 24 in. (610 mm) in width.3.1.3 plate, nmaterial 316 in. (5 mm) and over in thickness and over 10 in. (254 mm) in width.4. Ordering Inform
11、ation4.1 Orders for material under this specification shall include the following information, as required:4.1.1 Quantity (feet, metres,meters, or number of pieces),1 This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of
12、Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2014Nov. 1, 2018. Published October 2014January 2019. Originally approved in 1981. Last previous edition approved in 20092014 asB688 96 (2009).(2014). DOI: 10.1520/B0688-96R14.10.1520/B0688-18.2 New des
13、ignation Designation established in accordance with ASTM E527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, re
14、fer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all c
15、hanges accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100
16、Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.2 Alloy name or UNS number,4.1.3 Finish (hot-rolled or cold-rolled),4.1.4 Dimensions (thickness, width, and length if cut-length),4.1.5 Certification, if required,4.1.5 PurchasersPurchasers inspection, if required,4.
17、1.6 ASTM designation and year of issue, and4.1.7 Samples for product analysis, if required.5. Chemical Composition5.1 The material shall conform to the composition limits specified in Table 1.5.2 If a product (check) analysis is made by the purchaser, the material shall conform to the permissible va
18、riations for product(check) analysis in Table 1Specification B880.6. Mechanical Properties and Other Requirements6.1 The material shall conform to the mechanical property requirements specified in Table 2.7. Dimensions and Permissible Variations7.1 SheetMaterial shall conform to the variations speci
19、fied in Tables 3-9, inclusive. There will be no flatness requirements fornon-stretcher leveled sheet.7.2 StripMaterial shall conform to the variations specified in Tables 10-13, inclusive. Note that strip of all sizes may beordered to cut lengths in which case a variation of 12 in. (13 mm) over the
20、specified length shall be permitted. There shall be noflatness requirements for non-stretcher leveled strip.7.3 PlateMaterial shall conform to the variations specified in Tables 14-20, inclusive. Specially flattened plate, when sospecified, shall have permissible variations in flatness as agreed upo
21、n between the manufacturer and purchaser.TABLE 1 Chemical RequirementsElementCompositionLimits, %Product (Check)Analysis Varia-tions, under minor over max, ofthe SpecifiedLimit ofElement, %N08366 N08367Carbon 0.035 max 0.030 max 0.005Manganese 2.00 max 2.00 max 0.04Silicon 1.00 max 1.00 max 0.05Phos
22、phorus 0.040 max 0.040 max 0.005Sulfur 0.030 max 0.030 max 0.005Chromium 20.00 to 22.00 20.00 to 22.00 0.25Nickel 23.50 to 25.50 23.50 to 25.50 0.20Molybdenum 6.00 to 7.00 6.00 to 7.00 0.15Nitrogen . 0.18 to 0.25 0.01IronA remainder remainder .Copper . 0.75 max 0.04TABLE 1 Chemical RequirementsEleme
23、ntComposition Limits,%N08367Carbon 0.030 maxManganese 2.00 maxSilicon 1.00 maxPhosphorus 0.040 maxSulfur 0.030 maxChromium 20.00 to 22.00Nickel 23.50 to 25.50Molybdenum 6.00 to 7.00Nitrogen 0.18 to 0.25IronA remainderCopper 0.75 maxA Iron shall be determined arithmetically by difference.B688 1828. W
24、orkmanship, Finish, and Appearance8.1 The material shall be uniform in quality and condition, smooth, commercially straight or flat, and free of injuriousimperfections.TABLE 2 Mechanical Properties for Plate, Sheet, and StripN08366 N08367Yield strength, 0.2 % offset, min, ksi(MPa)35 (240) 45 (310)Yi
25、eld strength, 0.2 % offset, min, ksi(MPa)45 (310)Tensile strength, min, ksi (MPa)#316 in. (4.8 mm) thick 75 (515) 100 (690)#316 in. (4.8 mm) thick 100 (690)316 75 (515) 95 (655)316 95 (655)Elongation in 2 in. or 50 mm or 4D,min, %30A 30AElongation in 2 in. or 50 mm or 4D,min, %30AHardness,B max#316
26、in. (4.8 mm) thick 95 HRB 100 HRB#316 in. (4.8 mm) thick 100 HRB316 212 HBN 240 HBN316 240 HBNA Not applicable for thickness under 0.015 in. (0.40 mm).B Hardness values (Brinell, Rockwell, or equivalent) are informative only and arenot to be construed as the basis for acceptance or rejection.TABLE 3
27、 Permissible Variations in Thickness for Hot-Rolled Sheets in Cut Lengths, Cold-Rolled Sheets in CutLengths and CoilsSpecifiedSpecified Thickness,A in. (mm)PermissibleVariations, Plusand Minusin. mmOver 0.145 (3.68) to less than 316 (4.76) 0.014 0.36Over 0.130 (3.30) to 0.145 (3.68), incl 0.012 0.30
28、Over 0.114 (2.90) to 0.130 (3.30), incl 0.010 0.25Over 0.098 (2.49) to 0.114 (2.90), incl 0.009 0.23Over 0.083 (2.11) to 0.098 (2.49), incl 0.008 0.20Over 0.072 (1.83) to 0.083 (2.11), incl 0.007 0.18Over 0.058 (1.47) to 0.072 (1.83), incl 0.006 0.15Over 0.040 (1.02) to 0.058 (1.47), incl 0.005 0.13
29、Over 0.026 (0.66) to 0.040 (1.02), incl 0.004 0.10Over 0.016 (0.41) to 0.026 (0.66), incl 0.003 0.08Over 0.007 (0.18) to 0.016 (0.41), incl 0.002 0.05Over 0.005 (0.13) to 0.007 (0.18), incl 0.0015 0.040.005 (0.13) 0.001 0.03A Thickness measurements are taken at least 38 in. (9.52 mm) from the edge o
30、f thesheet.TABLE 4 Permissible Variations in Width and Lengthfor Hot-Rolled and Cold-Rolled Resquared Sheets(Stretcher Leveled Standard of Flatness)Specified Dimensions, in. (mm)TolerancesPlus Minusin. mmFor thickness under 0.131 (3.33):Widths up to 48 (1219) excl 116 2 0Widths 48 (1219) and over 18
31、 3 0Lengths up to 120 (3048) excl 116 2 0Lengths 120 (3048) and over 18 3 0For thicknesses 0.131 (3.33) and over:All widths and lengths 14 6 0B688 1839. Sampling9.1 Lot for Chemical Analysis and Mechanical Testing:9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 Lots for mechanical
32、testing shall consist of the material from one heat, in the same condition, and of the same nominalthickness.9.2 Test Material Selection:9.2.1 Chemical Analysis:9.2.1.1 An analysis of each lot shall be made by the manufacturer from a representative sample obtained during the pouring ofthe heat or su
33、bsequent processing.9.2.1.2 If samples for product (check) analysis are specified, a representative sample shall be taken from each lot (see 9.1.1)of finished material.9.2.2 Sampling for Mechanical PropertiesSamples of the material to provide test specimens for mechanical testing shall betaken from
34、such locations in each lot (see 9.1.2) as to be representative of that lot.10. Number of Tests10.1 Chemical AnalysisOne test per lot.10.2 Mechanical TestsOne test per lot.10.3 RetestsIf the specimen used in the mechanical test of any lot fails to meet the specified requirements, two additionalspecim
35、ens shall be taken from different sample pieces and tested. The results of the tests on both of these specimens shall meetthe specified requirements.11. Specimen Preparation11.1 Tension test specimens shall be taken from material in the final condition and tested transverse to the direction of rolli
36、ngwhen width permits.11.2 Tension test specimens shall be any of the standard or sub-size specimens shown in Test Methods E8/E8M. The largestpossible size specimen of Test Methods E8/E8M shall be used.11.3 In the event of disagreement, referee specimens shall be as follows:11.3.1 Full thickness of t
37、he material machined to the form and dimensions shown for the sheet-type specimen in Test MethodsE8/E8M for material under 12 in. (13 mm) in thickness.11.3.2 The largest possible round specimen shown in Test Methods E8/E8M for material 12 in. (13 mm) and over in thickness.TABLE 5 Permissible Variati
38、ons in Width for Hot-Rolled andCold-Rolled Sheets not Resquared and Cold-Rolled CoilsSpecified Thickness, in.(mm)Tolerances for SpecifiedWidth, in. (mm)24 (610) to 48(1219), excl48 (1219) andOverLess than 316 (4.76) 116 (2) plus0 minus18 (3) plus0 minusTABLE 6 Permissible Variations in Camber for Ho
39、t-Rolledand Cold-Rolled Sheets Not Required and Cold-Rolled CoilsASpecified Width, in. (mm)Tolerance perUnit Length ofAny 8 ft (2438 mm),in. (mm)24 (610) to 36 (914), incl 18 (3)Over 36 (914) 116 (2)A Camber is the greatest deviation of a side edge from a straight line andmeasurement is taken by pla
40、cing an 8-ft (2438-mm) straightedge on the concaveside and measuring the greatest distance between the sheet edge and thestraightedge.TABLE 7 Permissible Variations in Length for Hot-Rolled and Cold-Rolled Sheets Not ResquaredLength, ft (mm) Tolerances, in. (mm)Up to 10 (3048), incl 14 (6) plus 0 mi
41、nusOver 10 (3048) to 20 (6096), incl 12 (13) plus 0 minusB688 18412. Test Methods12.1 Determine the chemical composition and mechanical properties of the material, as enumerated in this specification, in thecase of disagreement, in accordance with the following ASTM methods:12.1.1 Chemical AnalysisM
42、ethods E38 and Test Methods E354E1473.12.1.1.1 Methods E38 shall be used only for elements not covered by Test Methods E354.12.2 Tension TestTest Methods E8/E8M.12.3 Hardness TestTest Method E10 or Test Methods E18, as applicable.12.4 Hardness ConversionHardness Conversion Tables E140.TABLE 8 Permis
43、sible Variations in Flatness for Hot-Rolled and Cold-Rolled Sheets Specified to Stretcher-LeveledStandard of FlatnessSpecified Thickness, in. (mm) Width, in. (mm) Length, in. (mm) Flatness Tolerance,A in. (mm)Under 316 (4.76) to 48 (1219), incl to 96 (2438), incl 18 (3)Under 316 (4.76) to 48 (1219),
44、 incl over 96 (2438) 14 (6)Under 316 (4.76) over 48 (1219) to 96 (2438), incl 14 (6)Under 316 (4.76) over 48 (1219) over 96 (2438) 14 (6)TABLE 9 Permissible Variations in Diameter for Hot-Rolled and Cold-Rolled Sheets, Sheared CirclesSpecifiedSpecified Thickness, in. (mm)Tolerance Over Specified Dia
45、meter (No Tolerance Under), in.(mm)Diameters Under 30in. (762)Diameters 30 (762)to 48 in. (1219)Diameters Over 48in. (1219)0.0972 (2.46) and thicker 18 (3) 316 (5) 14 (6)0.0971 (2.46) to 0.0568 (1.45), incl 332 (2) 532 (4) 732 (6)0.0567 (1.45) and thinner 116 (2) 18 (3) 316 (5)TABLE 10 Permissible V
46、ariations in Thickness for Cold-Rolled Strip in Coils and Cut LengthsNOTE 1Thickness measurements are taken at least 38 in. (9.52 mm) in from the edge of the strip, except that on widths less than 1 in. (25.4 mm),the tolerances are applicable for measurements at all locations. The tolerances in this
47、 table include crown tolerances.SpecifiedSpecified Thickness, in. (mm)Thickness Tolerances, for the Thickness and Widths Given, Plus and Minus, in. (mm)Width, in. (mm)316 (4.76) to 6 (152),inclOver 6 (152) to 12(305), inclOver 12 (305) to 24(610), exclThickness TolerancesA0.005 (0.13) to 0.010 (0.25
48、), incl 10 % 10 % 10 %Over 0.010 (0.25) to 0.011 (0.28), incl 0.0015 (0.04) 0.0015 (0.04) 0.0015 (0.04)Over 0.011 (0.28) to 0.013 (0.33), incl 0.0015 (0.04) 0.0015 (0.04) 0.002 (0.05)Over 0.013 (0.33) to 0.017 (0.43), incl 0.0015 (0.04) 0.002 (0.05) 0.002 (0.05)Over 0.017 (0.43) to 0.020 (0.51), inc
49、l 0.0015 (0.04) 0.002 (0.05) 0.0025 (0.06)Over 0.020 (0.51) to 0.029 (0.74), incl 0.002 (0.05) 0.0025 (0.06) 0.0025 (0.06)Over 0.029 (0.74) to 0.035 (0.89), incl 0.002 (0.05) 0.003 (0.08) 0.003 (0.08)Over 0.035 (0.89) to 0.050 (1.27), incl 0.0025 (0.06) 0.0035 (0.09) 0.0035 (0.09)Over 0.050 (1.27) to 0.069 (1.75), incl 0.003 (0.08) 0.0035 (0.09) 0.0035 (0.09)Over 0.069 (1.75) to 0.100 (2.54), incl 0.003 (0.08) 0.004 (0.10) 0.005 (0.13)Over 0.100 (2.54) to 0.125 (2.98), incl 0.004 (0.10) 0.0045 (0.11) 0.005 (0.13)O
