1、Designation: B 688 96 (Reapproved 2004)Standard Specification forChromium-Nickel-Molybdenum-Iron (UNS N08366 and UNSN08367) Plate, Sheet, and Strip1This standard is issued under the fixed designation B 688; the number immediately following the designation indicates the year oforiginal adoption or, i
2、n the case of revision, 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 chromium-nickel-molybdenum-iron UNS N08366 and UNS N083
3、67* 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 the standard. The values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any,
4、 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 for this product/material as pro-vided by the manufacturer, to establish appropriate safety andhealth practices, a
5、nd determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E 8 Test Methods for Tension Testing of Metallic MaterialsE 10 Test Method for Brinell Hardness of Metallic Materi-alsE 18 Test Methods for Rockwell Hardness and RockwellSuperficial Hardne
6、ss of Metallic MaterialsE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 38 Methods for Chemical Analysis of Nickel-Chromiumand Nickel-Chromium-Iron Alloys3E 140 Hardness Conversion Tables for MetalsE 354 Test Methods for Chemical Analysis of High-
7、Temperature, Electrical, Magnetic, and Other Similar Iron,Nickel, and Cobalt Alloys3. 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
8、under 24 in. (610 mm) in width.3.1.3 plate, nmaterial316 in. (5 mm) and over in thicknessand 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.
9、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,4.1.6 Purchasers inspection, if required,4.1.7 ASTM designation and year of issue, and4.1.8 Samples for product analysis, if required.5
10、. Chemical Composition5.1 The material shall conform to the composition limitsspecified 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 Requirement
11、s6.1 The material shall conform to the mechanical propertyrequirements specified in Table 2.7. 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 Strip
12、Material shall conform to the variations specifiedin Tables 10-13, inclusive. Note that strip of all sizes may beordered to cut lengths in which case a variation of12 in. (131This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsib
13、ility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved May 1, 2004. Published May 2004. Originallyapproved in 1981. Last previous edition approved in 1996 as B 688 96.* New designation established in accordance with ASTM E 527 and SAE J1086,Practice for Nu
14、mbering Metals and Alloys (UNS).2For 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.3Withdrawn.1Copyright ASTM In
15、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.mm) 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 speci-fied in Tables 14-20, incl
16、usive. Specially flattened plate, whenso specified, shall have permissible variations in flatness asagreed upon between the manufacturer and purchaser.8. Workmanship, Finish, and Appearance8.1 The material shall be uniform in quality and condition,smooth, commercially straight or flat, and free of i
17、njuriousimperfections.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 thickness.9.2 Test Material
18、Selection:9.2.1 Chemical Analysis:TABLE 1 Chemical RequirementsElementComposition Limits, % Product (Check)Analysis Varia-tions, under minor over max, ofthe SpecifiedLimit of Ele-ment, %N08366 N08367Carbon 0.035 max 0.030 max 0.005Manganese 2.00 max 2.00 max 0.04Silicon 1.00 max 1.00 max 0.05Phospho
19、rus 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 0.01IronAremainder remainder .Copper . 0.75 max 0.04AIron shall be determined arithmetical
20、ly by difference.TABLE 2 Mechanical 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,Bm
21、ax#316 in. (4.8 mm) thick 95 HRB 100 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
22、for Hot-Rolled Sheets in Cut Lengths, 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.
23、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 0.13Over 0.026 (0.66) to 0.040 (1.02), incl 0.004 0.
24、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 0.03AThickness measurements are taken at least38 in. (9.52 mm) from the edge ofthe sheet.TABLE 4 Permissible Variations in Width
25、 and Lengthfor Hot-Rolled and Cold-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 (304
26、8) and over18 30For thicknesses 0.131 (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) andO
27、verLess than316 (4.76)116 (2) plus0 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
28、(2)ACamber is the greatest deviation 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 Col
29、d-Rolled Sheets Not ResquaredLength, ft (mm) Tolerances, in. (mm)Up to 10 (3048), incl14 (6) plus 0 minusOver 10 (3048) to 20 (6096), incl12 (13) plus 0 minusB 688 96 (2004)29.2.1.1 An analysis of each lot shall be made by themanufacturer from a representative sample obtained during thepouring of th
30、e 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 testing shallbe t
31、aken from such locations in each lot (see 9.1.2) as to berepresentative 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, two addition
32、alTABLE 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)Under316 (4.76) to 48 (1219), incl to 96 (2438), incl18 (3)Under316 (4.76) t
33、o 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, Sheared CirclesSpecified Thickness, in. (mm)Tolerance Over Specified Diame
34、ter (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 (1.45) and thinner116 (2)18 (3)316 (5)TABLE 10 Permissible Variations i
35、n Thickness for Cold-Rolled Strip in Coils and Cut LengthsNOTE 1 Thickness 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 for measurements at all locations. The tolerances in this table incl
36、ude 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), exclThickness TolerancesA0.005 (0.13) to 0.010 (0.25), incl 10 % 10 % 10
37、 %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), incl 0.0015 (0.04) 0.00
38、2 (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
39、 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), incl 0.0045 (0.11) 0.0045 (0.11) 0.005 (0.13)Over 0.161 (4.09) to u
40、nder316 (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 5Specified EdgeNo.Width, in. (mm) Thickness, in. (mm)Width Tolerance for
41、 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 5 (127), incl18 (3.18) and under 0.005 (0.13) 0.005 (0.13)5 over 5 (1
42、27.00) 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 (0.38) 0.015 (0.38)B 688 96 (2004)3specimens shall be taken from diffe
43、rent sample pieces andtested. 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.11.2 Tensi
44、on test specimens shall be any of the standard orsub-size specimens shown in Test Methods E 8. The largestpossible size specimen of Test Methods E 8 shall be used.11.3 In the event of disagreement, referee specimens shallbe as follows:11.3.1 Full thickness of the material machined to the formand dim
45、ensions shown for the sheet-type specimen in TestMethods E 8 for material under12 in. (13 mm) in thickness.11.3.2 The largest possible round specimen shown in TestMethods E 8 for material12 in. (13 mm) and over in thickness.12. Test Methods12.1 Determine the chemical composition and mechanicalproper
46、ties of the material, as enumerated in this specification,in the case of disagreement, in accordance with the followingASTM methods:12.1.1 Chemical AnalysisMethods E 38 and Test MethodsE 354.12.1.1.1 Methods E 38 shall be used only for elements notcovered by Test Methods E 354.12.2 Tension TestTest
47、Methods E 8.12.3 Hardness TestTest Method E 10 or Test MethodsE 18, as applicable.12.4 Hardness ConversionHardness Conversion TablesE 140.12.5 Determination of Significant PlacesFor purposes ofdetermining compliance with the specified limits for therequirements of the properties listed in the follow
48、ing table,round an observed or a calculated value as indicated, inaccordance with the rounding methods of Practice E 29.Requirements rounded unit for observed orcalculated valueChemical composition nearest unit in the last right-hand place of figures of thespecified limitTensile strength and yieldst
49、rengthnearest 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 the corresponding hardness number read from the table without furtherrounding.13. Inspection13.1 Inspection of the material shall be agreed upon be-tween the purchaser and the supplier as part of the purchasecontract.14. Rejection and Rehearing14.1 Material that fails to conform to the requirements ofthis specificat
