1、Designation: B688 96 (Reapproved 2014)Standard 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 or, in
2、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. Scope1.1 This specification covers chromium-nickel-molybdenum-iron UNS N08366 and UNS N083672
3、plate,sheet, and strip for use in corrosive service and heat-resistingapplications.1.2 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 information onlyand are not considered standard.1.
4、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 including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas p
5、rovided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3E8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE10 Test Method for Brinell Hardness of Met
6、allic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE38 Methods for Chemical Analysis of Nickel-Chromiumand Nickel-Chromium-Iron Alloys (Withdrawn 1989)4E140 Hardness Conversion
7、Tables for Metals RelationshipAmong Brinell Hardness, Vickers Hardness, RockwellHardness, Superficial Hardness, Knoop Hardness, Sclero-scope Hardness, and Leeb HardnessE354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron,Nickel, and Cobalt Alloys3
8、. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 sheet, nmaterial under316 in. (5 mm) in thicknessand 24 in. (610 mm) and over in width.3.1.2 strip, nmaterial under316 in. (5 mm) in thicknessand under 24 in. (610 mm) in width.3.1.3 plate, nmaterial316 in. (5 mm) and over in thic
9、knessand over 10 in. (254 mm) in width.4. Ordering Information4.1 Orders for material under this specification shall includethe following information, as required:4.1.1 Quantity (feet, metres, or number of pieces),4.1.2 Alloy name or UNS number,4.1.3 Finish (hot-rolled or cold-rolled),4.1.4 Dimensio
10、ns (thickness, width, and length if cut-length),4.1.5 Certification, if required,4.1.6 Purchasers inspection, if required,4.1.7 ASTM designation and year of issue, and4.1.8 Samples for product analysis, if required.5. Chemical Composition5.1 The material shall conform to the composition limitsspecif
11、ied in Table 1.5.2 If a product (check) analysis is made by the purchaser,the material shall conform to the permissible variations forproduct (check) analysis in Table 1.6. Mechanical Properties and Other Requirements6.1 The material shall conform to the mechanical propertyrequirements specified in
12、Table 2.1This 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 Alloys.Current edition approved Oct. 1, 2014. Published October 2014. Originallyapproved in 1981. L
13、ast previous edition approved in 2009 as B688 96 (2009).DOI: 10.1520/B0688-96R14.2New designation established in accordance with ASTM E527 and SAE J1086,Practice for Numbering Metals and Alloys (UNS).3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servic
14、e at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consho
15、hocken, PA 19428-2959. United States17. Dimensions and Permissible Variations7.1 SheetMaterial shall conform to the variations speci-fied in Tables 3-9, inclusive. There will be no flatness require-ments for non-stretcher leveled sheet.7.2 StripMaterial shall conform to the variations specifiedin Ta
16、bles 10-13, inclusive. Note that strip of all sizes may beordered to cut lengths in which case a variation of12 in. (13mm) over the specified length shall be permitted. There shall beno flatness requirements for non-stretcher leveled strip.7.3 PlateMaterial shall conform to the variations specifiedi
17、n Tables 14-20, inclusive. Specially flattened plate, when sospecified, shall have permissible variations in flatness as agreedupon between the manufacturer and purchaser.8. Workmanship, Finish, and Appearance8.1 The material shall be uniform in quality and condition,smooth, commercially straight or
18、 flat, and free of injuriousimperfections.9. 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 testing shall consist of the mate-rial from one heat, in the same condition, and of the samenominal thicknes
19、s.TABLE 1 Chemical RequirementsElementComposition Limits, %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 0.05Phosphorus 0.040 max 0.040 max 0.005Sulfur
20、 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 0.01IronAremainder remainder .Copper . 0.75 max 0.04AIron shall be determined arithmetically by difference.TABLE 2 Mechanical
21、 Properties for Plate, Sheet, and StripN08366 N08367Yield strength, 0.2 % offset, min, ksi(MPa)35 (240) 45 (310)Tensile strength, min, ksi (MPa)#316 in. (4.8 mm) thick 75 (515) 100 (690)316 75 (515) 95 (655)Elongation in 2 in. or 50 mm or 4D,min, %30A30AHardness,Bmax#316 in. (4.8 mm) thick 95 HRB 10
22、0 HRB316 212 HBN 240 HBNANot applicable for thickness under 0.015 in. (0.40 mm).BHardness values (Brinell, Rockwell, or equivalent) are informative only and arenot to be construed as the basis for acceptance or rejection.TABLE 3 Permissible Variations in Thickness for Hot-Rolled Sheets in Cut Length
23、s, Cold-Rolled Sheets in CutLengths and CoilsSpecified Thickness,Ain. (mm)PermissibleVariations, Plusand Minusin. mmOver 0.145 (3.68) to less than316 (4.76) 0.014 0.36Over 0.130 (3.30) to 0.145 (3.68), incl 0.012 0.30Over 0.114 (2.90) to 0.130 (3.30), incl 0.010 0.25Over 0.098 (2.49) to 0.114 (2.90)
24、, 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 0.13Over 0.026 (0.66) to 0.040 (1.02), incl 0.004 0.10Over 0.016 (0.41) to 0.026 (0.66)
25、, 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 0.03AThickness measurements are taken at least38 in. (9.52 mm) from the edge of thesheet.TABLE 4 Permissible Variations in Width and Lengthfor Hot-Rolled and Cold-
26、Rolled Resquared Sheets(Stretcher Leveled Standard of Flatness)Specified Dimensions, in. (mm)TolerancesPlusMinusin. mmFor thickness under 0.131 (3.33):Widths up to 48 (1219) excl116 20Widths 48 (1219) and over18 30Lengths up to 120 (3048) excl116 20Lengths 120 (3048) and over18 30For thicknesses 0.1
27、31 (3.33) and over:All widths and lengths14 60TABLE 5 Permissible Variations 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 than316 (4.76)116 (2) plus0
28、 minus18 (3) plus0 minusTABLE 6 Permissible Variations in Camber for Hot-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), incl18 (3)Over 36 (914)116 (2)ACamber is the greatest deviatio
29、n of a side edge from a straight line andmeasurement is taken by placing 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
30、, ft (mm) Tolerances, in. (mm)Up to 10 (3048), incl14 (6) plus 0 minusOver 10 (3048) to 20 (6096), incl12 (13) plus 0 minusB688 96 (2014)29.2 Test Material Selection:9.2.1 Chemical Analysis:9.2.1.1 An analysis of each lot shall be made by themanufacturer from a representative sample obtained during
31、thepouring of the heat or subsequent 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 thematerial to provide test specimens for mechanical t
32、esting shallbe taken from such locations in each lot (see 9.1.2)astoberepresentative 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 ofany lot fails to meet the specified requirements,
33、 two additionalspecimens shall be taken from different sample pieces andTABLE 8 Permissible 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,Ain. (mm)Under3
34、16 (4.76) to 48 (1219), incl to 96 (2438), incl18 (3)Under316 (4.76) to 48 (1219), incl over 96 (2438)14 (6)Under316 (4.76) over 48 (1219) to 96 (2438), incl14 (6)Under316 (4.76) over 48 (1219) over 96 (2438)14 (6)TABLE 9 Permissible Variations in Diameter for Hot-Rolled and Cold-Rolled Sheets, Shea
35、red CirclesSpecified Thickness, in. (mm)Tolerance Over Specified Diameter (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 thicker18 (3)316 (5)14 (6)0.0971 (2.46) to 0.0568 (1.45), incl332 (2)532 (4)732 (6)0.0567 (
36、1.45) and thinner116 (2)18 (3)316 (5)TABLE 10 Permissible Variations in Thickness for Cold-Rolled Strip in Coils and Cut LengthsNOTE 1Thickness measurements are taken at least38 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
37、 for measurements at all locations. The tolerances in this table include crown tolerances.Specified 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), exc
38、lThickness TolerancesA0.005 (0.13) to 0.010 (0.25), 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
39、.002 (0.05)Over 0.017 (0.43) to 0.020 (0.51), incl 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 (0.0
40、6) 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)Over 0.125 (2.98) to 0.161 (4.09)
41、, incl 0.0045 (0.11) 0.0045 (0.11) 0.005 (0.13)Over 0.161 (4.09) to under316 (4.76) 0.005 (0.13) 0.005 (0.13) 0.006 (0.15)AThickness tolerances given in in. (mm) unless otherwise indicated.TABLE 11 Permissible Variations in Width for Cold-Rolled Strip in Coils and Cut Lengths for Edge Nos. 1 and 5Sp
42、ecified EdgeNo.Width, in. (mm) Thickness, in. (mm)Width Tolerance for Thicknessand Width Given, in. (mm)Plus Minus1 and 5332 (7.14) and under116 (1.59) and under 0.005 (0.13) 0.005 (0.13)1 and 5 over332 (7.14) to34 (19.05), incl332 (2.38) and under 0.005 (0.13) 0.005 (0.13)1 and 5 over34 (19.05) to
43、5 (127), incl18 (3.18) and under 0.005 (0.13) 0.005 (0.13)5 over 5 (127.00) to 9 (228.60), incl18 (3.18) to 0.008 (0.20), incl 0.010 (0.25) 0.010 (0.25)5 over 9 (228.60) to 20 (508.00), incl 0.105 (2.67) to 0.015 (0.38) 0.010 (0.25) 0.010 (0.25)5 over 20 (508.00) 0.080 (2.03) to 0.023 (0.58) 0.015 (
44、0.38) 0.015 (0.38)B688 96 (2014)3tested. The results of the tests on both of these specimens shallmeet the specified requirements.11. Specimen Preparation11.1 Tension test specimens shall be taken from material inthe final condition and tested transverse to the direction ofrolling when width permits
45、.11.2 Tension test specimens shall be any of the standard orsub-size specimens shown in Test Methods E8/E8M. Thelargest possible size specimen of Test Methods E8/E8M shallbe used.11.3 In the event of disagreement, referee specimens shallbe as follows:11.3.1 Full thickness of the material machined to
46、 the formand dimensions shown for the sheet-type specimen in TestMethods E8/E8M for material under12 in. (13 mm) in thick-ness.11.3.2 The largest possible round specimen shown in TestMethods E8/E8M for material12 in. (13 mm) and over inthickness.12. Test Methods12.1 Determine the chemical compositio
47、n and mechanicalproperties of the material, as enumerated in this specification,in the case of disagreement, in accordance with the followingASTM methods:12.1.1 Chemical AnalysisMethods E38 and Test MethodsE354.12.1.1.1 Methods E38 shall be used only for elements notcovered by Test Methods E354.12.2
48、 Tension TestTest Methods E8/E8M.12.3 Hardness TestTest Method E10 or Test Methods E18,as applicable.12.4 Hardness ConversionHardness Conversion TablesE140.12.5 Determination of Significant PlacesFor purposes ofdetermining compliance with the specified limits for therequirements of the properties li
49、sted in the following table,round an observed or a calculated value as indicated, inaccordance with the rounding methods of Practice E29.Requirements rounded unit for observed orcalculated valueChemical composition nearest unit in the last right-hand place of figures of thespecified limitTensile strength and yieldstrengthnearest 1000 psi (7 MPa)Elongation nearest 1 %Brinell hardness tabular valueARockwell hardness 1 Rockwell numberARound the mean diameter of the Brinell impression to the nearest 0.05 mm andreport
