1、Designation: A387/A387M 10Used in USDOE-NE StandardsStandard Specification forPressure Vessel Plates, Alloy Steel, Chromium-Molybdenum1This standard is issued under the fixed designation A387/A387M; the number immediately following the designation indicates the yearof original adoption or, in the ca
2、se of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This spe
3、cification2covers chromium-molybdenum alloysteel plates intended primarily for welded boilers and pressurevessels designed for elevated temperature service.1.2 Plates are available under this specification in severalgrades having different alloy contents as follows:Nominal NominalChromium Molybde-nu
4、mGrade Content, % Content, %2 0.50 0.5012 1.00 0.5011 1.25 0.5022, 22L 2.25 1.0021, 21L 3.00 1.005 5.00 0.509 9.00 1.0091 9.00 1.001.3 Each grade except Grades 21L, 22L, and 91 is availablein two classes of tensile strength levels as defined in the TensileRequirements tables. Grades 21L and 22L are
5、available only asClass 1. Grade 91 is available only as Class 2.NOTE 1Grade 911, previously covered by this specification, is nowcovered by Specification A1017/A1017M.1.4 The maximum thickness of plates is limited only by thecapacity of the composition to meet the specified mechanicalproperty requir
6、ements.1.5 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents. Therefore, each system mustbe used independently of the other. Combining values
7、 from thetwo systems may result in nonconformance with this specifi-cation.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements forSteel Plates for Pressure VesselsA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA435/A435M Specification
8、for Straight-Beam UltrasonicExamination of Steel PlatesA577/A577M Specification for Ultrasonic Angle-Beam Ex-amination of Steel PlatesA578/A578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tionsA1017/A1017M Specification for Pressure Vessel Plates
9、,Alloy Steel, Chromium-Molybdenum-Tungsten3. General Requirements and Ordering Information3.1 Material supplied to this material specification shallconform to Specification A20/A20M. These requirements out-line the testing and retesting methods and procedures, permis-sible variations in dimensions a
10、nd weight, quality and repair ofdefects, marking, loading, and ordering information.3.2 In addition to the basic requirements of this specifica-tion, certain supplementary requirements are available whenadditional control, testing, or examination is required to meetend use requirements. The purchase
11、r is referred to the listedsupplementary requirements in this specification and to thedetailed requirements in Specification A20/A20M.3.3 If the requirements of this specification are in conflictwith the requirements of Specification A20/A20M, the require-ments of this specification shall prevail.4.
12、 Manufacture4.1 Steelmaking PracticeThe steel shall be killed.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.11 on Steel Plates for Boilers and Pressure Vessels.Current edition approv
13、ed Oct. 1, 2010. Published November 2010. Originallyapproved in 1955. Last previous edition approved in 2006 as A387/A387M 06a.DOI: 10.1520/A0387_A0387M-10.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SA-387/SA-387M in Section II of that Code.3For referenced AST
14、M 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.1*A Summary of Changes section appears at the end of this standard.Copyright AST
15、M International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Heat Treatment5.1 Except for Grade 91, all plates shall be thermally treatedeither by annealing, normalizing- and -tempering, or, whenpermitted by the purchaser, accelerated cooling from theausten
16、itizing temperature by air blasting or liquid quenching,followed by tempering. Minimum tempering temperaturesshall be as follows:Grade Temperature, F C2, 12, and 11 1150 62022, 22L, 21, 21L, and 9 1250 6755 1300 7055.1.1 Grade 91 plates shall be normalized at 1900 to 1975F1040 to 1080C and shall be
17、tempered at 1350 to 1470F730 to 800C.5.2 Grade 5, 9, 21, 21L, 22, 22L, and 91 plates orderedwithout the heat treatment required by 5.1 shall be furnished ineither the stress-relieved or the annealed condition.5.3 For plates ordered without the heat treatment requiredby 5.1, heat treatment of the pla
18、tes to conform to 5.1 and toTable 1 or Table 2, as applicable, shall be the responsibility ofthe purchaser.6. Chemical Requirements6.1 The steel shall conform to the requirements as tochemical composition shown in Table 3 unless otherwisemodified in accordance with Supplementary Requirement S17,Vacu
19、um Carbon-Deoxidized Steel, in Specification A20/A20Mfor grades other than Grade 11.7. Metallurgical Structure7.1 Austenitic Grain SizeGrade 2 material shall have acoarse austenitic grain size.8. Mechanical Requirements8.1 Tension Test Requirements:8.1.1 The material as represented by the tension te
20、st speci-mens shall conform to the applicable requirements of Table 1or Table 2, as specified on the order.8.1.2 Adjustment of the percentage elongation requirementsis permitted in accordance with Specification A20/A20M forplates up to34 in. 20 mm inclusive, in thickness when an 8-in.200-mm gage len
21、gth is used.9. Marking9.1 In addition to the marking required in SpecificationA20/A20M, each plate shall be legibly stamped or stenciled,depending upon the ordered thickness, with the letter A forannealed, N for normalized and tempered, and Q for acceler-ated cooled and tempered, as applicable.10. K
22、eywords10.1 alloy steel; alloy steel plate; pressure containing parts;pressure vessel steels; steel plates; steel plates for pressurevesselsTABLE 1 Tensile Requirements for Class 1 PlatesGrades 2 and 12 Grade 11 Grades 22, 21, 5, 9, 21L, 22LTensile strength, ksi MPa 55 to 80 380 to 550 60 to 85 415
23、to 585 60 to 85 415 to 585Yield strength, min, ksi MPa 33 230 35 240 30 205Elongation in 8 in. 200 mm, min, %A18 19 .Elongation in 2 in. 50 mm, min, %A22 22 18Reduction of area, min, % . . 45B40CASee Specification A20/A20M, elongation adjustments.BMeasured on round test specimens.CMeasured on flat s
24、pecimen.TABLE 2 Tensile Requirements for Class 2 PlatesAGrade 2 Grade 11 Grade 12 Grades 22, 21, 5,9Grade 91Tensile strength, ksi MPa 70 to 90 75 to 100 65 to 85 75 to 100 85 to 110485 to 620 515 to 690 450 to 585 515 to 690 585 to 760Yield strength, min, ksi MPa/(0.2 %offset)45 310 45 310 40 275 45
25、 310 60 415Elongation in 8 in. 200 mm, min, %B18 18 19 . .Elongation in 2 in. 50 mm, min, %B22 22 22 18 18Reduction of area, min, % . . . 45C.40DANot applicable to annealed material.BSee Specification A20/A20M, elongation adjustments.CMeasured on round test specimens.DMeasured on flat specimen.A387/
26、A387M 102TABLE 3 Chemical RequirementsNOTE 1Where “. . .” appears, there is no requirement.ElementComposition, %Grade and UNS NumberGrade 2S50460Grade 12K11757Grade 11K11789Grade 22K21590Grade 22LK21590Grade 21K31545Grade 21LK31545Grade 5S50200Grade 9K90941Grade 91K90901Carbon:Heat analysis 0.050.21
27、 0.050.17 0.050.17 0.050.15A0.10 max 0.050.15A0.10 max 0.15 max 0.15 max 0.080.12Product analysis 0.040.21 0.040.17 0.040.17 0.040.15A0.12 max 0.040.15A0.12 max 0.15 max 0.15 max 0.060.15Manganese:Heat analysis 0.550.80 0.400.65 0.400.65 0.300.60 0.300.60 0.300.60 0.300.60 0.300.60 0.300.60 0.300.60
28、Product analysis 0.500.88 0.350.73 0.350.73 0.250.66 0.250.66 0.250.66 0.250.66 0.250.66 0.250.66 0.250.66Phosphorus, max:Heat analysis 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.020Product analysis 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025Sulfur, max:Heat analysis 0.0
29、25 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.010Product analysis 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.012Silicon:Heat analysis 0.150.40 0.150.40 0.500.80 0.50 max 0.50 max 0.50 max 0.50 max 0.50 max 1.00 max 0.200.50Product analysis 0.130.45 0.130.45 0.440.86 0.50 max 0.50
30、 max 0.50 max 0.50 max 0.55 max 1.05 max 0.180.56Chromium:Heat analysis 0.500.80 0.801.15 1.001.50 2.002.50 2.002.50 2.753.25 2.753.25 4.006.00 8.0010.00 8.009.50Product analysis 0.460.85 0.741.21 0.941.56 1.882.62 1.882.62 2.633.37 2.633.37 3.906.10 7.9010.10 7.909.60Molybdenum:Heat analysis 0.450.
31、60 0.450.60 0.450.65 0.901.10 0.901.10 0.901.10 0.901.10 0.450.65 0.901.10 0.851.05Product analysis 0.400.65 0.400.65 0.400.70 0.851.15 0.851.15 0.851.15 0.851.15 0.400.70 0.851.15 0.801.10Nickel, max:Heat analysis . . . . . . . . . 0.40Product analysis . . . . . . . . . 0.43Vanadium:Heat analysis .
32、 . . . . . . . 0.04 max 0.180.25Product analysis . . . . . . . . 0.05 max 0.160.27Columbium:Heat analysis . . . . . . . . . 0.060.10Product analysis . . . . . . . . . 0.050.11Boron:Heat analysis . . . . . . . . . .Product analysis . . . . . . . . . .Nitrogen:Heat analysis . . . . . . . . . 0.0300.07
33、0Product analysis . . . . . . . . . 0.0250.080Aluminum, max:Heat analysis . . . . . . . . . 0.02Product analysis . . . . . . . . . 0.02Titanium, max:Heat analysis . . . . . . . . . 0.01Product analysis . . . . . . . . . 0.01Zirconium, max:Heat analysis . . . . . . . . . 0.01Product analysis . . . .
34、. . . . . 0.01AThe carbon content for plates over 5 in. 125 mm in thickness is 0.17 max on product analysis.A387/A387M103SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the order. A list of standardizedsupplementary requirements for use at the option of the p
35、urchaser is included in SpecificationA20/A20M. Several of those considered suitable for use with this specification are listed below bytitle. Other tests may be performed by agreement between the supplier and the purchaser.S1. Vacuum Treatment,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatm
36、ent of MechanicalTest Coupons,S4.1 Additional Tension Test,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for Material 0.625 in. 16 mm andover in Thickness),S7. High-Temperature Tension Test,S8. Ultrasonic Examination in accordance with Specifica-tion A435/A435M,S9. Magnetic Particle Examinati
37、on,S11. Ultrasonic Examination in accordance with Specifica-tion A577/A577M,S12. Ultrasonic Examination in accordance with Specifica-tion A578/A578M, andS17. Vacuum Carbon-Deoxidized Steel.ADDITIONAL SUPPLEMENTARY REQUIREMENTSIn addition, the following supplementary requirements are suitable for thi
38、s application. S62 and S63are applicable for Grades 22 and 21 only.S53. Alternative Location for Mechanical TestingWhen specified by the purchaser, the axis of the tensile andimpact test specimens shall come from the mid-thickness ofeach plate tested, in lieu of midway between the centerthickness an
39、d the top or bottom surface of the plate.S60. Restricted CarbonS60.1 The maximum carbon content of Grade 5 shall be0.10 %.S62. Temper Embrittlement FactorS62.1 The composition of the steel, based on heat analysis,shall be restricted in accordance with the following equations:J 5Si 1 Mn!3P 1 Sn!3104#
40、150 Si, Mn, P and Sn in wt %!Cu#0.20%Ni#0.30%S62.1.1 Lower values of J, Cu, and Ni can be specified byagreement between purchaser and the supplier.S62.1.2 When so specified by the purchaser, the maximumvalue of J shall not exceed 100.S62.1.3 The values of J shall be reported.S62.1.4 If the plates ar
41、e repaired by welding, the composi-tion of the weld deposit shall be restricted in accordance withthe following equations:X 510P 1 5Sb 1 4Sn 1 As!/100#15 P, Sb, Sn and As in ppm!Cu#0.20%Ni#0.30%S62.1.5 The values of X shall be reported.S63. Impact Properties After Step CoolingS63.1 The Charpy V-notc
42、h impact properties shall be deter-mined as follows:S63.1.1 A sufficient amount of Charpy V-notch test speci-mens shall be taken from the same location from a plate fromeach heat of steel to construct two transition temperaturecurves.S63.1.2 The test specimens for one transition temperaturecurve sha
43、ll be given the minimum post weld heat treatment(PWHT) cycle specified by the purchaser.S63.2 The test specimens for the other transition tempera-ture curve shall be given the PWHT cycle specified in S63.1.2plus the following step cooling heat treatment:FIG. S1.1 Transition Temperature Curves Before
44、 and After StepCool Heat TreatmentA387/A387M 104Hold at 1100F (593C) for 1 h, then cool at 10F (5.6C)/hto 1000F (538C).Hold at 1000F (538C) for 15 h, then cool at 10F (5.6C)/hto 975F (524C).Hold at 975F (524C) for 24 h, then cool at 10F (5.6C)/hto 925F (496C).Hold at 925F (496C) for 60 h, then cool
45、at 5F (2.8C)/hto 875F (468C).Hold at 875F (468C) for 100 h, then cool at 50F(27.8C)/h to 600F (315C).Cool in still air.S63.3 Test the Charpy V-notch test specimens in accordancewith Test Methods and Definitions A370 to determine the 40ft-lbs (55 J) transition temperature from each transition tem-per
46、ature curve using a set of three test specimens at each testtemperature. The test temperatures shall include tests on theupper and lower shelves and a minimum of four intermediatetemperatures.S63.4 The following requirements shall be met.vTr40 12.5DvTr40#50FvTr55 12.5DvTr55#10Cwhere:vTr40 (vTr55) =
47、the 40 ft-lbs (55 J) transition tempera-ture of the material subjected to theminimum PWHT specified by the pur-chaser.DvTr40 (DvTr55) = the shift of the 40 ft-lbs (55 J) transi-tion temperature the of the step cooledmaterial. (The 40 ft-lbs (55 J) transi-tion temperature the of the step cooledmateri
48、al minus that of the materialsubjected to the minimum PWHTonly).S63.5 The 40 ft-lbs (55 J) transition temperatures for thetwo material conditions shall be reported.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A387/A387M 06a) th
49、at may impact the use of this standard. (Approved Oct. 1, 2010.)(1) Revised Section 3.(2) Revised Table 3.(3) Revised Supplementary Requirements S53 and S63.3.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validi
