1、Designation: A841/A841M 13A841/A841M 17Standard Specification forSteel Plates for Pressure Vessels, Produced by Thermo-Mechanical Control Process (TMCP)1This standard is issued under the fixed designation A841/A841M; the number immediately following the designation indicates the yearof original adop
2、tion or, in the case 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.1. Scope*1.1 This specification2 covers steel plates produced by the thermo-mechanic
3、al control process (TMCP). The plates are intendedprimarily for use in welded pressure vessels. A description of the TMCP method is given in Appendix X1.1.2 Due to the inherent characteristics of the TMCP method, the plates cannot be formed at elevated temperatures withoutsustaining significant loss
4、es in strength and toughness. Except for Grade G, the plates may be formed and post-weld heat-treatedat temperatures not exceeding 1200F 650C, providing the requirements of 6.1 are met. Grade G plates may be formed attemperatures not exceeding 985F 530C provided the requirements of 6.1 are met.1.3 T
5、he maximum permitted nominal thickness of plates furnished to this specification is 4 in. 100 mm for Grades A, B, andC; 1.5 in. 40 mm for Grades D,3 E, and F; and 2 in. 50 mm for Grade G.1.4 Grade G is susceptible to magnetization. Use of magnets in handling after heat treatment should be avoided if
6、 residualmagnetism would be detrimental to subsequent fabrication or service.1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI unitsare shown in brackets. The values stated in each system are not exact equivalents. Therefo
7、re, each system must be usedindependently of the other. Combining values from the two systems may result in nonconformance with this specification.1.6 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on P
8、rinciples 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:4A20/A20M Specification for General Requirements for Steel Plates for Pressure VesselsA435/
9、A435M Specification for Straight-Beam Ultrasonic Examination of Steel PlatesA577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel PlatesA578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications3. General Requirements and Order
10、ing Information3.1 Plates supplied to this product specification shall conform to Specification A20/A20M, which outlines the testing andretesting methods and procedures, permissible variations in dimensions, quality and repair of defects, marking, loading, etc.3.2 Specification A20/A20M also establi
11、shes the rules for ordering information that should be complied with when purchasingplates to this specification.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.11on Steel Plates for
12、Boilers and Pressure Vessels.Current edition approved Oct. 1, 2013Nov. 1, 2017. Published November 2013November 2017. Originally approved in 1985. Last previous edition approved in 20072013as A841/A841M 03a (2007).A841/A841M 13. DOI: 10.1520/A0841_A0841M-13. 10.1520/A0841_A0841M-17.2 For ASME Boiler
13、 and Pressure Vessel Code applications, see related Specification SA-841/SA-841M in Section II of that Code.3 ExxonMobil Upstream Research Company has patents pending concerning the use of chemistry ranges in ASTM A841 Grade D, in combination with specific TMCProutes and/or specific microstructural
14、features. Interested parties are invited to submit information regarding identification of alternatives to these patented items to ASTMInternational Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.4 For referen
15、cedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the
16、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 changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard
17、 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 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.1 If the plates are to be subjected to warm forming o
18、r post-weld heat treatment, the order must indicate the temperaturesand times-at-temperature that will be utilized in such operations. (See 6.1 and Specification A20/A20M, SupplementaryRequirement S3.)3.3 In addition to the basic requirements of this specification, certain supplementary requirements
19、 are available when additionalcontrol, testing, or examination is required to meet end use requirements. These include:3.3.1 Vacuum treatment,3.3.2 Additional or special tension testing,3.3.3 Additional or special impact testing, and3.3.4 Nondestructive examination.3.4 The purchaser is referred to t
20、he listed supplementary requirements in this specification and to the detailed requirements inSpecification A20/A20M.3.5 If the requirements of this specification are in conflict with the requirements of Specification A20/A20M, the requirementsof this specification shall prevail.4. Manufacture4.1 St
21、eelmaking PracticeThe steel shall be killed and shall conform to the fine austenitic grain size requirement ofSpecification A20/A20M.4.2 The plates shall be produced by the thermo-mechanical control process.5. Chemical Composition5.1 The chemical composition on heat analysis shall conform to the req
22、uirements given in Table 1, except as otherwise providedin Supplementary Requirement S17 of Specification A20/A20M when that requirement is involved.5.2 If a product analysis is made on a sample taken from the standard location (see Specification A20/A20M), the results of theanalysis shall not devia
23、te from the limits for the heat analysis by more than the values given in Table 2.6. Mechanical Requirements6.1 If the plates are to be subjected to warm forming or post-weld heat treatment, the test coupons shall be subjected to heattreatment to simulate such fabrication operations. (See 3.2.1 and
24、Specification A20/A20M, Supplementary Requirement S3.)6.2 Tension Test RequirementsThe plates as represented by the tension-test specimens shall conform to the requirements givenin Table 3.6.2.1 Number and Location of Test CouponsTwo tension tests shall be made from each plate-as-rolled. One test co
25、upon shallbe taken from a corner of the plate on each end.6.3 Notch Toughness Test Requirements:6.3.1 Except for Grade G, longitudinal Charpy V-notch tests shall be made in accordance with Specification A20/A20M.6.3.2 For Grades A, B and C, unless the test temperature and absorbed energy requirement
26、s are specified in the purchase order,the tests shall be conducted at 40F 40C and the average absorbed energy for each set of three full size specimens shall be15 ftlb 20J or more.6.3.3 For Grade D, unless the test temperature and the lateral expansion requirements are specified in the purchase orde
27、r, thetests shall be conducted at 40F 40C and the lateral expansion for each specimen shall be 0.015 in. 0.4 mm or more.6.3.4 For Grades E and F, unless the test temperature and absorbed energy requirements are specified in the purchase order, thetests shall be conducted at 40F 40C and the average a
28、bsorbed energy for each set of three full size specimens shall be 20ftlb 27 J or more.6.3.5 For Grade G, transverse Charpy V-notch tests shall be made in accordance with Specification A20/A20M. Unless the testtemperature is specified in the purchase order, the tests shall be conducted at 320F 195C.
29、Each specimen shall have a lateralexpansion opposite the notch of not less than 0.015 in. 0.38 mm, up to a plate thickness of 1.25 in. 31.75 mm inclusive; and0.019 in. 0.48 mm at a plate thickness of 2.0 in. 50 mm. Values of lateral expansion for plate thicknesses between 1.25 in. 31.75mm and 2.0 in
30、. 50 mm shall be determined by linear interpolation.7. Marking7.1 In addition to the marking required in Specification A20/A20M, each plate shall be legibly stamped with the letters “TMC”following the stamped specification designation.8. Keywords8.1 pressure containing parts; pressure vessel steel;
31、steel plates; steel plates for pressure vessel applicationsA841/A841M 172TABLE 1 Chemical RequirementsAElement Composition, %Grade A Grade B Grade C Grade D Grade E Grade F Grade GCarbon 0.20 0.15 0.10 0.09 0.07 0.10B 0.13Manganeset # 1.5 in. 40 mm 0.701.35C 0.701.35C 0.701.60 1.002.00 0.701.60 1.10
32、1.70B 0.601.20t 1.5 in. 40 mm 1.001.60 1.001.60 1.001.60 D D D 0.601.20Phosphorus 0.030 0.030 0.030 0.010 0.015 0.020 0.015Sulfur 0.030 0.025 0.015 0.005 0.005 0.008 0.015Silicon 0.150.50 0.150.50 0.150.50 0.050.25 0.050.30 0.100.45 0.040.15ECopper 0.35 0.35 0.35 0.50 0.35 0.40 . . .Nickel 0.25 0.60
33、 0.25 1.05.0 0.60 0.85 6.07.5Chromium 0.25 0.25 0.25 0.30 0.30 0.30 0.301.00Molybdenum 0.08 0.30 0.08 0.40 0.30 0.50 0.30Columbium (Niobium)F 0.03 0.03 0.06 0.05 0.08 0.10 . . .Vanadium 0.06 0.06 0.06 0.02 0.06 0.09 . . .Titanium F F 0.0060.02 0.0060.03 F G . . .Titanium G G 0.0060.02 0.0060.03 G H
34、. . .Boron . . . 0.00050.002 0.0007 0.0007 . . .Aluminum, min 0.020 total or 0.020 total or . . 0.020 total or 0.020 total or E0.015 acidsolubleF0.015 acidsolubleF0.015 acidsolubleF0.015 acidsolubleG0.008 acid soluble0.015 acidsolubleG0.015 acidsolubleG0.015 acidsolubleG0.015 acidsolubleH0.008 acid
35、solubleA Values are maximums unless a minimum or a range is indicated. Where ellipses appear in this table, there is no requirement.B For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage points above the specified maximum for manganese is
36、 permitted, up to a maximum of 1.85 %.C Manganese may exceed 1.35 % on heat analysis, up to a maximum of 1.60 %, provided that the carbon equivalent on heat analysis does not exceed 0.47 %, or the value specified in Supplementary Requirement S77when that requirement is invoked, when based on the fol
37、lowing formula:CE5C1Mn/61sCr1Mo1Vd/51sNi1Cud/15%When this option is exercised, the manganese content on product analysis shall not exceed the heat analysis content by more than 0.12 percentage points.When this option is exercised, the manganese content on product analysis shall not exceed the heat a
38、nalysis content by more than 0.12 percentage points.D Not applicable.E Silicon may be less than 0.04 %, provided that total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over.F Columbium and niobium are interchangeable names for the same element and both names are acce
39、ptable in A01 specifications.G By agreement, the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content, by heat analysis, shall be 0.006 % to 0.02 %,and the actual titanium content shall be reported on the
40、 test report.H By agreement, the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content, by heat analysis, shall be 0.006 % to 0.03 %,and the actual titanium content shall be reported on the test report.A84
41、1/A841M173TABLE 2 Product Analysis TolerancesElement Specified Limit, %Tolerances, %UnderMinimumLimitOverMaximumLimitCarbon to 0.15, incl 0.02 0.03over 0.15 0.03 0.04Manganese to 0.60, incl 0.05 0.06over 0.60 to 0.90, incl 0.06 0.08over 0.90 to 1.20, incl 0.08 0.10over 1.20 to 1.35, incl 0.09 0.11ov
42、er 1.35 to 1.65, incl 0.09 0.12over 1.65 0.11 0.14Phosphorus to 0.020, incl . 0.005over 0.020 . 0.010Sulfur to 0.020, incl . 0.005over 0.020 . 0.010Silicon to 0.30, incl 0.02 0.03over 0.30 to 0.40, incl 0.05 0.05over 0.40 0.06 0.06Nickel to 1.00, incl 0.03 0.03over 1.0 to 2.0, incl 0.05 0.05over 2.0
43、 to 3.8, incl 0.07 0.07over 3.8 0.08 0.08Chromium to 0.90, incl 0.04 0.04Molybdenum to 0.20, incl 0.01 0.01over 0.20 0.03 0.03Copper to 1.00, incl 0.03 0.03Vanadium to 0.10, incl 0.01 0.01Columbium(Niobium)Ato 0.10, incl 0.01 0.01Aluminum to 0.15, incl 0.005 0.01Titanium to 0.010, incl 0.002 0.01ove
44、r 0.010 0.01 0.01Boron any A ABoron any B BA Columbium and niobium are interchangeable names for the same element andboth names are acceptable in A01 specifications.B Product analysis is not applicable for this element.A841/A841M 174TABLE 3 Tensile RequirementsGrades A, B, and C Grade D Grade E Grad
45、e F Grade GClass 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class 8 Class 9 Class 10Yield strength, min, ksi MPato 1.5 in. 40 mm incl 50 345 60 415 100 690 70 485 75 515 70 485 75 515 80 550 85 585 90 620over 1.5 in. 40 mm to2.0 in. 50 mm A A A A A A A A 85 585 90 620over 1.5 in. 40 mm to2.5
46、in. to 65 mm 50 345 60 415 A A A A A A A Aover 2.5 in. over 65 mm 45 310 55 380 A A A A A A A ATensile strength, ksi MPato 1.5 in. 40 mm incl 709048562080100550690145170100011708410458071588108605745821025657058610659073090110620760100120690825109129750885over 1.5 in. 40 mm to2.0 in. 50 mm A A A A A
47、 A A A100120690825109129750885over 1.5 in. 40 mm to2.5 in. to 65 mm709048562080100550690 A A A A A A A Aover 2.5 in. over 65 mm 65854505857595515655 A A A A A A A AElongation in 2 in. 50 mm,min, %Bto 1.5 in. 40 mm incl 22 22 13 20 19 20 19 18 20 20over 1.5 in. 40 mm to2.0 in. 50 mm A A A A A A A A 2
48、0 20over 1.5 in. 40 mm to2.5 in. to 65 mm 22 22 A A A A A A A Aover 2.5 in. over 65 mm 22 22 A A A A A A A AElongation in 8 in. 200 mm,min, %Bto 1.5 in. 40 mm incl 18 . . 16 15 16 15 14 A Aover 1.5 in. 40 mm to2.5 in. to 65 mm 18 A A A A A A A Aover 2.5 in. over 65 mm 18 . A A A A A A A AA Not appli
49、cable.B See Specification A20/A20M for elongation requirement adjustments.A841/A841M175SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the order.Alist of standardized supplementary requirements for use at the option of the purchaser are includedin Specification A20/A20M. Several of those that are con
