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ASTM A387A387M-2017

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ASTM A387A387M-2017

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade TBT Committee. a Designation A387/A387M - 17 U 117 INTERNATIONAL Standard Specification for Used in USDOE-NE Standards Pressure Vessel Plates, Alloy Steel, Chromium Molybdenum 1 This standard is issued under the fixed designation A387/A387M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved .Ii,r use by agencies ofthe U.S. Department ofDefense. 1. Scope* 1.1 This specification2 covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service. 1.2 Plates are available under this specification in several grades having different alloy contents as follows Nominal Nominal Chromium Molybdenum Grade Content, Content, 2 0.50 0.50 12 1.00 0.50 11 1.25 0.50 22, 22L 2.25 1.00 21,21L 3.00 1.00 5 5.00 0.50 9 9.00 1.00 91 9.00 1.00 1.3 Each grade except Grades 21 L, 22L, and 91 is available in two classes of tensile strength levels as defined in the Tensile Requirements tables. Grades 21L and 22L are available only as Class 1. Grade 91 is available only as Class 2. NOTE I-Grade 911, previously covered by this specification, is now covered by Specification AlO17/AlO17M. 1.4 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements. 1.S The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specifi cation. 1.6 This international standard was developed in accor dance with internationally recognized principles on standard-I This specification is under the jurisdiction of ASTM Committee AOI on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee AO 1.11 on Steel Plates for Boilers and Pressure Vessels. Current edition approved March 15, 2017. Published March 2017. Originally approved in 1955. Last previous edition approved in 2011 as A387/A387M - 11. DOl 10. 1520/A0387_A0387M-17. 2 For ASME Boiler and Pressure Vessel Code applications, see related Specifi cation SA-387/SA-387M in Section II of that Code. ization established in the Decision on Principles for the Development of International Standards, Guides and Recom mendations issued by the World Trade Organization Technical Barriers to Trade TBT Committee. 2. Referenced Documents 2.1 ASTM Standards3 A20lA20M Specification for General Requirements for Steel Plates for Pressure Vessels A370 Test Methods and Definitions for Mechanical Testing of Steel Products A43SIA43SM Specification for Straight-Beam Ultrasonic Examination of Steel Plates AS77/AS77M Specification for Ultrasonic Angle-Beam Ex amination of Steel Plates AS78/AS78M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applica tions AlO17/AlO17M Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum-Tungsten 2.2 A WS Specijications . .4 AS.SIAS.SM Low-Alloy Steel Electrodes for Shielded Metal Arc Welding AS.23/AS.23M Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding AS.28/AS.28M Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding AS.29IAS.29M Low-Alloy Steel Electrodes for Flux Cored Arc Welding 3. General Requirements and Ordering Information 3.1 Material supplied to this material specification shall conform to Specification A201A20M. These requirements out line the testing and retesting methods and procedures, permis sible variations in dimensions and weight, quality and repair of defects, marking, loading, and ordering information. 3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standards volume information, refer to the standards Document Summary page on the ASTM website. 4 Available from American Welding Society CAWS, 550 NW Lejeune Rd., Miami, FL 33126, http//www.aws.org. * A Summary of Changes section appears at the end of this standard Copyright ASTM International, 100 Barr Harbor Drive, PO Box ClOO, West Conshohocken, PA 19428-2959. United States cO A387/A387M -17 3.2 In addition to the basic requirements of this specification, certain supplementary requirements are available when additional control, testing, or examination is required to meet end use requirements. The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements in Specification A20/A20M. 3.3 If the requirements of this specification are in conflict with the requirements of Specification A20/A20M, the require ments of this specification shall prevail. 4. Manufacture 4.1 Steelmaking Practice-The steel shall be killed. 5. Heat Treatment S.l Except for Grade 91, all plates shall be thermally treated either by annealing, normalizing and tempering, or, when permitted by the purchaser, accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering. Minimum tempering temperatures shall be as follows Grade Temperature, of roC] 2, 12, and 11 1150 [620] 22, 22L, 21, 21L, and 9 1250 [675] 5 1300 [705] S.I.I Grade 91 plates shall be thermally treated, either by normalizing and tempering or by accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering. Grade 91 plates shall be austenitized at 1900 to 197soF [1040 to 1080C] and shall be tempered at I3S0 to I470F [730 to 800C]. S.2 Grade S, 9, 21, 21L, 22, 22L, and 91 plates ordered without the heat treatment required by S.l shall be furnished in either the stress relieved or the annealed condition. S.3 For plates ordered without the heat treatment required by S.1, heat treatment of the plates to conform to S.l and to Table 2 or Table 3, as applicable, shall be the responsibility of the purchaser. 6. Chemical Requirements 6.1 The steel shall conform to the requirements as to chemical composition shown in Table I unless otherwise 2 modified in accordance with Supplementary Requirement S 17, Vacuum Carbon-Deoxidized Steel, in Specification A20/A20M for grades other than Grade II. 7. Metallurgical Structure 7.1 Austenitic Grain Size-Grade 2 material shall have a coarse austenitic grain size. 8. Mechanical Requirements 8.1 Tension Test Requirements 8.1.1 The material as represented by the tension test speci mens shall conform to the applicable requirements of Table 2 or Table 3, as specified on the order. 8.1.2 Adjustment of the percentage elongation requirements is permitted in accordance with Specification A20/ A20M for plates up to in. [20 mm] inclusive, in thickness when an 8-in. [200-mm] gage length is used. 9. Repair Welding 9.1 Repair welding shall be permitted only with the ap proval of the purchaser. Repair welds shall meet the require ments of the construction code specified by the purchaser. 9.2 All repair welds in Grade 91 shall be made with one of the following welding processes and consumables SMA W, AS.S/AS.SM E90XX-B9; SAW, AS.23/AS.23M EB9 neutral flux; GTAW, AS.28/AS.28M ER90S-B9; and FCAW AS.29/ AS.29M E91 Tl-B9. In addition, the sum of the NiMn content of all welding consumables used to weld repair Grade 91 plate shall not exceed 1.0 . 10. Marking 10.1 In addition to the marking required in Specification A20/A20M, each plate shall be legibly stamped or stenciled, depending upon the ordered thickness, with the letter A for annealed, N for normalized and tempered, and Q for acceler ated cooled and tempered, as applicable. 11. Keywords 11.1 alloy steel; alloy steel plate; pressure containing parts; pressure vessel steels; steel plates; steel plates for pressure vessels TABLE 1 Chemical Requirements Non I-Where ... appears, there is no requirement. Composition, Grade and UNS Number Element Grade 2 Grade 12 Grade 11 Grade 22 Grade 22L Grade 21 S50460 K11757 K11789 K21590 K21590 K31545 Carbon Heat analysis 0.05-0.21 0.05-0.17 0.05-0.17 0.05-0.15A 0.10 max 0.05-0.15A Product analysis 0.04-0.21 0.04-0.17 0.04-0.17 0.04-0.15A 0.12 max 0.04-0.15A Manganese Heat analysis 0.55-0.80 0.40-0.65 0.40-0.65 0.30-0.60 0.30-0.60 0.30-0.60 Product analysis 0.50-0.88 0.35-0.73 0.35-0.73 0.25-0.66 0.25-0.66 0.25-0.66 Phosphorus, max Heat analysis 0.025 0.025 0.025 0.025 0.025 0.025 Product analysis 0.025 0.025 0.025 0.025 0.025 0.025 Sulfur, max Heat analysis 0.025 0.025 0.025 0.025 0.025 0.025 Product analysis 0.025 0.025 0.025 0.025 0.025 0.025 Silicon Heat analysis 0.15-0.40 0.15-0.40 0.50-0.80 0.50 max 0.50 max 0.50 max Product analysis 0.13-0.45 0.13-0.45 0.44-0.86 0.50 max 0.50 max 0.50 max Chromium Heat analysis 0.50-0.80 0.80-1.15 1.00-1.50 2.00-2.50 2.00-2.50 2.75-3.25 Product analysis 0.46-0.85 0.74-1.21 0.94-1.56 1.88-2.62 1.88-2.62 2.63-3.37 Molybdenum OJ. Heat analysis 0.45-0.60 0.45-0.60 0.45-0.65 0.90-1.10 0.90-1.10 0.90-1.10 Product analysis 0.40-0.65 0.40-0.65 0.40-0.70 0.85-1.15 0.85-1.15 0.85-1.15 Nickel, max Heat analysis Product analysis Vanadium Heat analysis Product analysis Columbium Heat analysis Product analysis Boron Heat analysis Product analysis Nitrogen Heat analysis Product analysis Aluminum, max Heat analysis Product analysis Titanium, max Heat analysis Product analysis Zirconium, max Heat analysis Product analysis A The carbon content for plates over 5 in. [125 mm] in thickness is 0.17 max on product analysis. Grade 21L Grade 5 K31545 S50200 0.10 max 0.15 max 0.12 max 0.15 max 0.30-0.60 0.30-0.60 0.25-0.66 0.25-0.66 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.50 max 0.50 max 0.50 max 0.55 max 2.75-3.25 4.00-6.00 2.63-3.37 3.90-6.10 0.90-1.10 0.45-0.65 0.85-1.15 0.40-0.70 Grade 9 K90941 0.15 max 0.15 max 0.30-0.60 0.25-0.66 0.025 0.025 0.025 0.025 1.00 max 1.05 max 8.00-10.00 7.90-10.10 0.90-1.10 0.85-1.15 0.04 max 0.05 max Grade 91 K90901 0.08-0.12 0.06-0.15 0.30-0.60 0.25-0.66 0.020 0.025 0.010 0.012 0.20-0.50 0.18-0.56 8.00-9.50 7.90-9.60 0.85-1.05 0.80-1.10 0.40 0.43 0.18-0.25 0.16-0.27 0.06-0.10 0.05-0.11 0.030-0.070 0.025-0.080 0.02 0.02 0.01 0.01 0.01 0.01 W 00 g W 00 -....J s .... -....J cO A387/A387M -17 TABLE 2 Tensile Requirements for Class 1 Plates Grades 2 and 12 Grade 11 Grades 22, 21,5,9,21 L, 22L Tensile strength, ksi [MPa] Yield strength, min, ksi [MPa] Elongation in 8 in. [200 mmJ, min, A Elongation in 2 in. [50 mmJ, min, A Reduction of area, min, A See Specification A20/A20M, elongation adjustments. B Measured on round test specimens. C Measured on flat specimen. 55 to 80 [380 to 550] 33 [230] 18 22 60 to 85 [415 to 585] 35 [240] 19 22 TABLE 3 Tensile Requirements for Class 2 PlatesA Tensile strength, ksi [MPa] Yield strength, min, ksi [MPa]/0.2 offset Elongation in 8 in. [200 mmJ, min, B Elongation in 2 in. [50 mmJ, min, B Reduction of area, min, A Not applicable to annealed material. B See Specification A20/A20M , elongation adjustments. C Measured on round test specimens. o Measured on flat specimen. Grade 2 70 to 90 [485 to 620] 45 [310] 18 22 Grade 11 75 to 100 [515 to 690] 45 [310] 18 22 Grade 12 65 to 85 [450 to 585] 40 [275] 19 22 SUPPLEMENTARY REQUIREMENTS 60 to 85 [415 to 585] 30 [205] Grades 22, 21, 5, 9 75 to 100 [515 to 690] 45 [310] Supplementary requirements shall not apply unless specified in the order. A list of standardized supplementary requirements for use at the option of the purchaser is included in Specification A20/A20M. Several of those considered suitable for use with this specification are listed below by title. Other tests may be performed by agreement between the supplier and the purchaser. S 1. Vacuum Treatment, S2. Product Analysis, S3. Simulated Post-Weld Heat Treatment of Mechanical Test Coupons, ...... ... ...... .D i Grade 91 85 to 110 [585 to 760] 60 [415] 18 S4.1 Additional Tension Test, S5. Charpy V-Notch Impact Test, S6. Drop Weight Test for Material 0.625 in. [16 mm] and over in Thickness, e Q/ C W Minimum PWHT and step age heat treatment S7. High-Temperature Tension Test, S8. Ultrasonic Examination in accordance with Specifica tion A435/A435M, S9. Magnetic Particle Examination, S 11. Ultrasonic Examination in accordance with Specifica tion A577/A577M, S 12. Ultrasonic Examination in accordance with Specifica tion A578/A578M, and S 17. Vacuum Carbon-Deoxidized Steel. 4 40 55 LwTr40 lWTr55 Temperature, of 0C FIG. S1.1 Transition Temperature Curves Before and After Step Cool Heat Treatment cO A387/A387M -17 ADDITIONAL SUPPLEMENTARY REQUIREMENTS In addition, the following supplementary requirements are suitable for this application. S62 and S63 are applicable for Grades 22 and 21 only. S76 is applicable only for Grade 91. S53. Alternative Location for Mechanical Testing When specified by the purchaser, the axis of the tensile and impact test specimens shall come from the mid-thickness of each plate tested, in lieu of midway between the center thickness and the top or bottom surface of the plate. S60. Restricted Carbon S60.1 The maximum carbon content of Grade 5 shall be 0.10. S62. Temper Embrittlement Factor S62.1 The composition of the steel, based on heat analysis, shall be restricted in accordance with the following equations J Si Mn x p Sn x 104 -s 150 Si, Mn, P and Sn in wt Cu -s 0.20 Ni -s 0.30 S62.1.1 Lower values of J, Cu, and Ni can be specified by agreement between purchaser and the supplier. S62.1.2 When so specified by the purchaser, the maximum value of J shall not exceed 100. S62.1.3 The values of J shall be reported. S62.IA If the plates are repaired by welding, the composi tion of the weld deposit shall be restricted in accordance with the following equations X IOP5Sb4SnAs1l00-S 15 p, Sb, Sn and As in ppm Cu -s 0.20 Ni -s 0.30 S62.1.5 The values of X shall be reported. S63. Impact Properties After Step Cooling S63.1 The Charpy V-notch 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 from each heat of steel to construct two transition temperature curves. S63.1.2 The test specimens for one transition temperature curve shall be given the minimum

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