ASTM A426 A426M-2013 Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service《高温设施用离心铸造铁素体合金钢管的标准规格》.pdf

《ASTM A426 A426M-2013 Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service《高温设施用离心铸造铁素体合金钢管的标准规格》.pdf》由会员分享，可在线阅读，更多相关《ASTM A426 A426M-2013 Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service《高温设施用离心铸造铁素体合金钢管的标准规格》.pdf（8页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: A426/A426M 11aA426/A426M 13Standard Specification forCentrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service1This standard is issued under the fixed designation A426/A426M; the number immediately following the designation indicates the yearof original adoption or, in t

2、he 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 centrifugally cast alloy steel pipe intended for use in h

3、igh-temperature, high-pressure service.1.2 Several grades of ferritic steels are covered. Their compositions are given in Table 1.1.3 Supplementary Requirements S1 through S12 are provided. The supplementary requirements provide for additional testsof an optional nature and when desired shall be so

4、stated in the order (Section 4).1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems

5、may result in non-conformance with the standard.1.4.1 Within the text, the SI units are shown in brackets.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety an

6、d health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:3A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA609/A609M Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrason

7、ic Examination ThereofA941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and FerroalloysA999/A999M Specification for General Requirements for Alloy and Stainless Steel PipeE94 Guide for Radiographic ExaminationE165 Practice for Liquid Penetrant Examination for General IndustryE186

8、Reference Radiographs for Heavy-Walled (2 to 412-in. (50.8 to 114-mm) Steel CastingsE208 Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic SteelsE280 Reference Radiographs for Heavy-Walled (412 to 12-in. (114 to 305-mm) Steel CastingsE446 Refer

9、ence Radiographs for Steel Castings Up to 2 in. (50.8 mm) in ThicknessE709 Guide for Magnetic Particle Testing2.2 ANSI Standard:4B46.1 Surface Texture2.3 ASME Boiler and Pressure Vessel Code:5Section IX Welding and Brazing Qualifications2.4 AWS Specifications6A5.5/A5.5M Low Alloy Steel Electrodes fo

10、r Shielded Metal Arc WeldingA5.23/A5.23M Low Alloy Steel Electrodes and Fluxes for Submerged Arc Welding1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.18on Castings.Current edition a

11、pproved Oct. 1, 2011Nov. 1, 2013. Published November 2011November 2013. Originally approved in 1958. Last previous edition approved in 2011 asA426/A426M - 11.A426/A426M - 11a. DOI: 10.1520/A0426_A0426M-11A.10.1520/A0426_A0426M-13.2 For ASME Boiler and Pressure Vessel Code applications see related Sp

12、ecification SA-426 in Section II of that Code.3 For referencedASTM 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.4 Available fro

13、m American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.5 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, ThreeTwo Park Ave., New York, NY 10016-5990,http:/www.asme.org.This document is not an

14、ASTM standard and is intended only to provide the 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

15、 all cases only the current versionof the standard 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 States1A5.28/A

16、5.28M Low Alloy Steel Electrodes and Rods for Gas Shielded Arc WeldingA5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored Arc Welding3. Ordering Information3.1 Orders for material under this specification shall include the following, as required, to describe the desired materialadequately:3.1.1 Q

17、uantity (feet, centimetres, or number of lengths),3.1.2 Name of material (centrifugally cast pipe),TABLE 1 Chemical RequirementsAComposition, %Grade UNSNumber Carbon ManganesePhos-phorus,maxSulfur,max Silicon Chromium Molybdenum OtherCP1 J12521 0.25max0.30-0.80 0.030 0.025 0.10-0.50 . 0.44-0.65 .CP2

18、 J11547 0.100.20 0.30-0.61 0.030 0.025 0.10-0.50 0.50-0.81 0.44-0.65 .CP5 J42045 0.20max0.30-0.70 0.030 0.025 0.75max4.00-6.50 0.45-0.65 .CP5b J51545 0.15max0.30-0.60 0.030 0.025 1.00-2.00 4.00-6.00 0.45-0.65 .CP9 J82090 0.20max0.30-0.65 0.030 0.025 0.25-1.00 8.00-10.00 0.90-1.20 .CP91 J84090 0.080.

19、12 0.300.60 0.030 0.010 0.200.50 8.09.5 0.851.05 nickel, 0.40 max.;columbium, 0.0600.10;nitrogen, 0.0300.070;vanadium, 0.180.25;aluminum, 0.02 max.;titanium, 0.01 max;zirconium, 0.01 max.CP11 J12072 0.050.20 0.30-0.80 0.030 0.025 0.60max1.00-1.50 0.44-0.65 .CP12 J11562 0.050.15 0.30-0.61 0.030 0.025

20、 0.50max0.80-1.25 0.44-0.65 .CP15 J11522 0.15max0.30-0.60 0.030 0.025 1.15-1.65 . 0.44-0.65 .CP21 J31545 0.050.15 0.30-0.60 0.030 0.025 0.50max2.65-3.35 0.80-1.06 .CP22 J21890 0.050.15 0.30-0.70 0.030 0.025 0.60max2.00-2.75 0.90-1.20 .CPCA15 J91150 0.15max1.00max0.030 0.025 1.50max11.5-14.0 0.50max.

21、TABLE 1 Chemical RequirementsAComposition, %Grade UNSNumber Carbon ManganesePhos-phorus,maxSulfur,max Silicon Chromium MolybdenumCP1 J12521 0.25max0.30-0.80 0.030 0.025 0.10-0.50 . 0.44-0.65CP2 J11547 0.100.20 0.30-0.61 0.030 0.025 0.10-0.50 0.50-0.81 0.44-0.65CP5 J42045 0.20max0.30-0.70 0.030 0.025

22、 0.75max4.00-6.50 0.45-0.65CP5b J51545 0.15max0.30-0.60 0.030 0.025 1.00-2.00 4.00-6.00 0.45-0.65CP9 J82090 0.20max0.30-0.65 0.030 0.025 0.25-1.00 8.00-10.00 0.90-1.20CP11 J12072 0.050.20 0.30-0.80 0.030 0.025 0.60max1.00-1.50 0.44-0.65CP12 J11562 0.050.15 0.30-0.61 0.030 0.025 0.50max0.80-1.25 0.44

23、-0.65CP15 J11522 0.15max0.30-0.60 0.030 0.025 1.15-1.65 . 0.44-0.65CP21 J31545 0.050.15 0.30-0.60 0.030 0.025 0.50max2.65-3.35 0.80-1.06CP22 J21890 0.050.15 0.30-0.70 0.030 0.025 0.60max2.00-2.75 0.90-1.20CPCA15 J91150 0.15max1.00max0.030 0.025 1.50max11.5-14.0 0.50maxA Where ellipses appear in this

24、 table, there is no requirement.A426/A426M 1323.1.3 Specification number,3.1.4 Grade (Table 1),3.1.5 Size (outside or inside diameter and minimum wall thickness),3.1.6 Length (specific or random) (Section on Permissible Variations in Length of Specification A999/A999M),3.1.7 End finish (Section on E

25、nds of Specification A999/A999M),3.1.8 Optional Requirements S1 through S12 and Section 15.114.1,3.1.9 Test report required (Section on Certified Test Report of Specification A999/A999M),3.1.10 Service temperature if over 1000F 540C (Note 1), and3.1.11 Special requirements or additions to specificat

26、ion.4. General Requirements for Delivery4.1 Material furnished under this specification shall conform to the applicable requirements of the current edition ofSpecification A999/A999M unless otherwise provided herein.5. Materials and Manufacture5.1 Heat-TreatmentThe pipe shall be furnished in the aus

27、tenitized and tempered condition (Note 1) according to therequirements of Table 2.5.1.1 Heat treatment shall be performed after the pipe has been allowed to cool below the transformation range. Definition ofheat-treatment terms shall be as given in Terminology A941.NOTE 1Except for Grade CP91, it It

28、 is recommended that the temperature for tempering should be at least 100F 55C above the intended servicetemperature. The purchaser shall advise the manufacturer of the service temperature when it is over 1000F 540C. (See 3.1.10.)5.2 MachiningThe pipe shall be machined on the inner and outer surface

29、s to a roughness value no greater than 250 in. 6.35m arithmetical average deviation (AA) from the mean line unless otherwise specified as in ANSI B46.1.6. Chemical Analysis6.1 Heat AnalysisAn analysis of each heat shall be made by the manufacturer to determine the percentages of elementsspecified in

30、 Table 1. The analysis shall be made on a test sample taken preferable during the pouring of the heat. The chemicalcomposition thus determined shall conform to the requirements specified in Table 1 (.Note 2).NOTE 2The role of alloying elements in the development of Grade CP91 has been extensively in

31、vestigated. V and Nb contribute to precipitationstrengthening by forming fine and coherent precipitation of M(C,N)X carbo-nitrides in the ferrite matrix. V also precipitates as VN during tempering orduring creep. Therefore, the addition of strong nitride forming elements, those with a stronger affin

32、ity for nitrogen than Nb and V, as deoxidation agents,interferes with these high-temperature strengthening mechanisms.76.2 Product AnalysisA product analysis may be made by the purchaser. The sample for analysis shall be selected so as to berepresentative of the pipe being analyzed. The chemical com

33、position thus determined shall conform to the requirements of Table1.7. Tensile and Hardness Requirements7.1 Steel used for the castings shall conform to the tensile and hardness requirements specified in Table 3.8. Permissible Variations in Dimensions8.1 ThicknessThe wall thickness shall not vary o

34、ver that specified by more than 18 in. 3 mm. There shall be no variationunder the specified wall thickness.9. Number of Tests9.1 One tension and one hardness test shall be made from each heat.9.2 If a specimen is machined improperly or if flaws are revealed by machining or during testing, the specim

35、en may bediscarded and another substituted from the same heat.10. Retests10.1 If the results of the mechanical tests for any heat do not conform to the requirements specified, the castings may bereheat-treated and retested, but may not be re-austenitized more than twice.11. Test Specimens11.1 Test c

36、oupons from which tension test specimens are prepared shall be removed from heat-treated casting prolongations.11.2 When agreed upon between the manufacturer and the purchaser, test coupons from which test specimens are prepared shallbe cast attached to separate blocks from the same heat as the cast

37、ing represented. The test blocks shall be heat treated in the samemanner as the casting represented.A426/A426M 13311.3 Tension test specimens shall be machined to the form and dimensions of the standard round 2-in. 50-mm gage lengthspecimens shown in Fig. 6 of Test Methods and Definitions A370.12. H

38、ydrostatic Test12.1 Except for Grade CP91, each Each length of pipe shall be hydrostatically tested in accordance with SpecificationA999/A999M.12.2 When agreed to between the manufacturer and the purchaser and so stated in the order, the hydrostatic test may be deferredand shall be performed later b

39、y the purchaser. Pipe furnished without the hydrostatic test shall include with the mandatory markingthe letters “NH.” The manufacturer is responsible for the satisfactory performance of the casting when it is tested.TABLE 2 Heat Treatment RequirementsGrade AustenitizingTreatmentTemperingTemperature

40、,min, unlessa range isshown, FCCP1 Normalizedor LiquidQuenched1100 595CP2 Normalizedor LiquidQuenched1100 595CP5 Normalizedor LiquidQuenched1250 675CP5b Normalizedor LiquidQuenched1250 675CP9 Normalizedor LiquidQuenched1250 675CP91 Austenitizedat 1900-1975 F1040-1080C andthen AirCooled orLiquidQuenc

41、hed1350-1470730-800CP11 Normalizedor LiquidQuenched1100 595CP12 Normalizedor LiquidQuenched1100 595CP15 Normalizedor LiquidQuenched1100 595CP21 Normalizedor LiquidQuenched1250 675CP22 Normalizedor LiquidQuenched1250 675CPCA15 Normalizedor LiquidQuenched1250 675A426/A426M 13412.3 When certification i

42、s required by the purchaser and the hydrostatic test has been omitted, the certification shall clearly state“not hydrostatically tested.” The specification number and material grade shown on the certification shall be followed by the letters“NH.”13. Ultrasonic Examination13.1 Each length of Grade CP

43、91 pipe shall be ultrasonically examined in accordance with A999/A999M.13. Visual Inspection13.1 The surface of the casting shall be free from cracks and hot tears as determined by visual examination. Other surfaceimperfections shall be judged in accordance with visual acceptance criteria which may

44、be specified in the order.14. Rework and Retreatment14.1 Defects as defined in Section 1513 or as found by the ultrasonic examination of Grade CP91, shall be removed and theirremoval verified by visual inspection of the resultant cavities. Defects that are located by inspecting with supplementaryreq

45、uirements S6, S7, S8, or S9 shall be removed or reduced to an acceptable size.14.2 If removal of the defect does not infringe upon the minimum wall thickness, the depression may be blended uniformly intothe surrounding surface.14.3 If the cavity resulting from defect removal infringes upon the minim

46、um wall thickness, weld repair is permitted subjectto the purchasers approval. Except for Grade CP91, the The composition of the weld rod used shall be suitable for the compositionof the metal being welded.14.3.1 Only welders and procedures qualified in accordance with ASME Boiler and Pressure Vesse

47、l Code, Section IX, shall beused. All repair welds will be inspected to the same quality standards used to inspect the casting.15.3.2 All weld repairs in Grade CP91 shall be made with one of the following processes and consumables: SMAW,A5.5/A5.5M E90XX-B9; SAW, A5.23/A5.23M EB9 + Neutral Flux; GTAW

48、, A5.28/A5.28M ER90S-B9; and FCAW, A5.29/A5.29M E91T1-B9. In addition, the sum of the Ni+Mn content, of all weld consumables used to weld repair Grade CP91, shallnot exceed 1 %.14.4 Local or full heat treatment in accordance with tempering temperatures specified in 5.1 shall follow welding.TABLE 3 T

49、ensile Properties and Hardness RequirementsTensile strength, min, psi MPa:min: psi MPaGrade CP1 65 000 450Grades CP11, CP22 70 000 485Grades CP5, CP9, CPCA15 90 000 620Grade CP91 85 000 585 to 110 000 760All other grades 60 000 415Yield strength, min, psi MPa:Yield strength, min: psi MPaGrade CP1 35 000 240Grades CP11, CP22 40 000 275Grades CP5, CP9 60 000 415Grade CPCA15 65 000 450Grade CP91 60 000 415All other grades 30 000 205Elongation, min, %:AElongation, mi