1、Designation:B523/B523M07 Designation: B523/B523M 12Standard Specification forSeamless and Welded Zirconium and Zirconium AlloyTubes1This standard is issued under the fixed designation B523/B523M; the number immediately following the designation indicates the yearof original adoption or, in the case
2、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. Scope1.1 This specification2covers three grades of zirconium and zirconium alloy seamless and welded t
3、ubes.1.2 Unless a single unit is used, for example corrosion mass gain in mg/dm2, the values stated in either inch-pound or SI unitsare to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system mustbe used independently of the other. SI
4、 values cannot be mixed with inch-pound values.1.3 The following precautionary caveat pertains only to the test methods portion of this specification: This standard does notpurport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this st
5、andard toestablish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsB551/B551M Specification for Zirconium and Zirconium
6、Alloy Strip, Sheet, and PlateB614 Practice for Descaling and Cleaning Zirconium and Zirconium Alloy SurfacesE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE213 Practice for Ultrasonic Testing
7、 of Metal Pipe and TubingE426 Practice for Electromagnetic (Eddy-Current) Examination of Seamless and Welded Tubular Products,Austenitic StainlessSteel and Similar Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 annealed, nfor purposes of this specification “ annealed” d
8、enotes material that exhibits a recrystallized grain structure.3.2 Lot Definitions:3.2.1 tubes, na lot shall consist of a material of the same size, shape, condition, and finish produced from the same ingot orpowder blend by the same reduction schedule and the same heat treatment parameters. Unless
9、otherwise agreed betweenmanufacturer and purchaser, a lot shall be limited to the product of an 8 h period for final continuous anneal, or to a single furnaceload for final batch anneal.4. Classification4.1 The tubes are furnished in three grades as follows:4.1.1 Grade R60702Unalloyed zirconium.4.1.
10、2 Grade R60704Zirconium-tin alloy.4.1.3 Grade R60705Zirconium-niobium alloy.5. Ordering Information5.1 Orders for material under this specification should include the following information:1This specification is under the jurisdiction of ASTM Committee B10 and is the direct responsibility of Subcomm
11、ittee B10.02 on Zirconium and Hafnium.Current edition approved June 1, 2007. Published July 2007. Originally approved in 1970. Last previous edition approved in 2006 as B523/B523M06. DOI:10.1520/B0523_B0523M-07.Current edition approved May 15, 2012. Published June 2012. Originally approved in 1970.
12、Last previous edition approved in 2007 as B523/B523M 07. DOI:10.1520/B0523_B0523M-12.2For ASME Boiler and Pressure Vessel Code Applications, see related Specification SB523 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Servi
13、ce at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previou
14、s 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 as published by ASTM is to be considered the official document.Copyright ASTM Inter
15、national, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.1 Quantity (weight or number of pieces, or both),5.1.2 Name of material (zirconium seamless or welded tube),5.1.3 Dimensions (diameter, wall thickness as either average or minimum, lengths),5.1.4 ASTM d
16、esignation and year of issue,5.1.5 Grade number (see 4.1), and5.1.6 Additions to the specification, if required. See 6.3.1, 7.3, 10.1, 12.7.3, 14.1, and 15.1 for additional optional requirementsfor the purchase order.NOTE 1A typical ordering description is as follows: 1000 pieces of seamless zirconi
17、um tubes, 2 in. 50 mm in outside diameter by 0.06 in. 15 mmin average wall thickness by 10 ft 3 m in length, vacuum annealed, ASTM B523/B523M - 01, Grade R60702.6. Materials and Manufacture6.1 Seamless tube shall be made by any seamless method that will yield a product meeting the requirements of th
18、is specification.6.2 Welded tube shall be made from sheet or strip meeting the requirements of Specification B551/B551M by an automaticarc-welding process or other method of welding that will yield a product meeting the requirements of this specification. Filler metalshall not be used. Welded tubing
19、 shall be supplied as follows:6.2.1 As welded, or6.2.2 As welded and further reduced.6.2.3 Welds in grade R60705 shall be stress relief annealed within 14 days after welding to prevent delayed hydride cracking.The heat treatment shall be done as follows:6.2.3.1 The stress-relieving treatment shall c
20、onsist of holding the fitting at a minimum temperature of 1100F 600C for notless than12 h/in. 25 mm of the maximum thickness in a nonreducing atmosphere. The minimum time at this temperature is 15min. All stress-relieved parts shall be cleaned subsequently and shall be free of oxide scale contaminat
21、ion (see Practice B614).6.3 The tube shall be furnished annealed.6.3.1 Purchaser shall specify one of the following:(a) annealed in air(b) annealed in vacuum7. Chemical Composition7.1 The material shall conform to the requirements as to chemical composition prescribed in Table 1.7.2 The manufacturer
22、s ingot analysis shall be considered the chemical analysis for tubing, except for hydrogen and nitrogen,which shall be determined on the finished product.7.3 When requested by the purchaser and stated in the purchase order, a product analysis for any elements listed in Table 1 shallbe made on the fi
23、nished product.7.3.1 The manufacturers analysis shall be considered as verified if the check analysis confirms the manufacturers reportedvalues within the tolerances prescribed in Table 2.8. Tensile Requirements8.1 The material, as represented by the test specimens, shall conform to the tensile prop
24、erties prescribed in Table 3.9. Permissible Variation in Dimensions9.1 DiameterAt any point (cross section) along the length of the tube, the variation in outside diameter shall not exceed thoseprescribed in Table 4.TABLE 1 Chemical RequirementsAElementComposition, %UNS Grade DesignationR60702 R6070
25、4 R60705Zirconium + hafnium, minB99.2 97.5 95.5Hafnium, max 4.5 4.5 4.5Iron + chromium 0.2 max 0.2 to 0.4 0.2 maxTin . 1.0to2.0 .Hydrogen, max 0.005 0.005 0.005Nitrogen, max 0.025 0.025 0.025Carbon, max 0.05 0.05 0.05Niobium . . . . . . 2.0 to 3.0Oxygen, max 0.16 0.18 0.18ABy agreement between the p
26、urchaser and the manufacturer, analysis may berequired and limits established for elements and compounds not specified in thetable of chemical composition.BThe value for zirconium + hafnium, min, is a warranted but not a measuredvalue.B523/B523M 1229.2 LengthWhen tubes are ordered cut to length, the
27、 length shall be not less than that specified, but a variation of18 in. 3.2mm will be permitted on tube up to 10 ft 3 m, inclusive. For lengths over 10 ft, an additional over-tolerance of18 in. 3.2 mmfor each 10 ft 3 m or fraction thereof shall be permissible up to12 in. 13 mm, maximum.9.3 Straightn
28、essThe tube shall be free of bends or kinks and the maximum uniform bow shall not exceed the values shownin Table 5.9.4 Squareness of CutThe angle of cut of the end of any tube up to 112 in. 40 mm in outside diameter may depart fromsquare not more than 0.016 in./in. mm/mm.10. Workmanship and Quality
29、 Level Requirements10.1 The finished tube shall be clean and free of foreign material, shall have smooth ends, free of burrs, and shall be free ofinjurious external and internal imperfections in accordance with standards of acceptability agreed upon between the manufacturerand the purchaser. Minor d
30、efects may be removed provided the dimensional tolerances of Table 4 are not exceeded.11. Significance of Numerical Limits11.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in thefollowing table, an observed value or a calculated value
31、shall be rounded as indicated in accordance with the rounding methodsof Practice E29.TABLE 2 Permissible Variation in Product Analysis BetweenDifferent LaboratoriesElementPermissible Variation in ProductAnalysis, %Hydrogen 0.002Nitrogen 0.01Carbon 0.01Hafnium 0.1Iron + chromium 0.025Tin 0.05Niobium
32、0.05Oxygen 0.02TABLE 3 Tensile RequirementsUNS Grade DesignationR60702 R60704 R60705Tensile strength,min, ksi MPa55 380 60 415 80 550Yield strength, min,ksi MPa30 205 35 240 55 380Elongation in 2 in.or 50 mm, min, %16 14 16TABLE 4 Permissible Variations in Outside Dimensions Based on Individual Meas
33、urementsOutside Diameter, in. mm Diameter Tolerance, in. mmA,BPermissible VariationsCin WallThickness, t,%Under 1 25, excl 60.004 60.100 10Over 1 to 112 25 to 40, incl 60.005 60.125 10Over 112 to 2 40 to 50, incl 60.006 60.150 10Over 2 to 212 50 to 65, incl 60.007 60.180 10Over 212 to 312 65 to 90,
34、incl 60.010 60.250 10AThese permissible variations in outside diameter apply only to tubes as finished at the mill before subsequent swaging, expanding, bending, polishing, or otherfabricating operations.BOvality is the maximum and minimum outside diameter of a tube measured at any one cross section
35、. If the measurement is made with a ring gage, the following formulashall apply: Ovality = specified OD tube + diameter tolerance +0.002 in. .05 mm (length of ring gage, 1 in. 25 mm 3 specified tube OD.CWhen minimum wall tubes are ordered, tolerances are all plus and shall be double the values shown
36、.TABLE 5 StraightnessLength, ft mMaximum Curvature Depthof ArcOver 3 to 6 0.9 to 1.85, incl18 in. 3.2 mmOver 6 to 8 1.8 to 2.5, incl316 in. 5 mmOver 8 to 10 2.5 to 3.0, incl14 in. 6.4 mmOver 10 3.014 in./any 10 ft 2.1 mm/mB523/B523M 123PropertyRounded Unit for Observedor Calculated ValueChemical com
37、position, and toler-ances (when expressed as decimals)nearest unit in the last right-handplace of figures of the specified limitTensile strength and yield strength nearest 1000 psi 10 MPaElongation nearest 1 %12. Number of Tests and Retests12.1 One longitudinal tension test, see 13.1, shall be made
38、from each lot.12.2 One chemistry test, see 7.2 and 13.8, for hydrogen and nitrogen shall be made from each lot of finished product.12.3 One flare test, see 13.6, shall be made from each lot.12.4 One reverse flattening test, see 13.7, shall be made from each lot of welded tubing.12.5 Welded Tubes:12.
39、5.1 Welded tubes shall be nondestructively tested using the following procedures:12.5.1.1 Eddy Current Test, see 13.2.12.5.1.2 Ultrasonic Test, see 13.3.12.5.1.3 Hydrostatic Test, see 13.4, or pneumatic test, see 13.5.12.6 Seamless Tubes:12.6.1 Seamless tubes shall be nondestructively tested using t
40、he following procedures:12.6.1.1 Ultrasonic Test, see 13.3.12.6.1.2 Eddy Current Test, see 13.2using the drilled hole standard, or hydrostatic test, see , or hydrostatic test, see 13.4, orpneumatic test, see 13.5.12.7 Retests:12.7.1 If any sample or specimen exhibits obvious surface contamination or
41、 improper preparation disqualifying it as a trulyrepresentative sample, it shall be discarded and a new sample or specimen substituted.12.7.2 If the results of any tests of any lot do not conform to the requirements specified, retests shall be made on additional tubesof double the original number fr
42、om the same lot, each of which shall conform to the requirements specified.12.7.3 Retesting after failure of initial retests may be done only with the approval of the purchaser.13. Test Methods13.1 Tension TestsConduct the tension test in accordance with Test Methods E8. Determine the yield strength
43、 by the offset(0.2 %) method. Determine the tensile properties using a strain rate of 0.003 to 0.007 in./in. mm/mm/min through the yieldstrength. After the yield strength has been exceeded, the cross-head speed may be increased to approximately 0.05 in./in.mm/mm/min to failure.13.2 Eddy Current Test
44、ing:13.2.1Perform the nondestructive electric test in accordance with Practices E213 or13.2.1 Perform the nondestructive test in accordance with Practice E426, or a purchaser-approved procedure.13.2.1.1The calibration tube shall contain, at the option of the producer, any one of the following discon
45、tinuities to establish aminimum sensitivity level for rejection. Place the discontinuity in the parent metal.(a) Drilled HoleDrill a hole not larger than 0.031 in. 0.8 mm in diameter radially and completely through the tube wall,taking care to avoid distortion of the tube while drilling.(b) Transver
46、se Tangential NotchUsing a round tool or file with a 0.25-in. 6.4 mm diameter, file or mill a notch tangentialto the surface and transverse to the longitudinal axis of the tube. The notch shall have a depth not exceeding 12.5% of the specifiedwall thickness of the tube or 0.004 in. 0.10 mm, whicheve
47、r is greater.(c) Longitudinal NotchMachine a notch 0.031 in 0.8 mm or less in width in a radial plane parallel to the material axis onthe outside of the tube to have a depth not exceeding 12.5% of the specified wall thickness of the material or 0.004 in. 0.10 mm,whichever is greater. The length of t
48、he notch shall be compatible with the testing method.13.2.1.1 Drilled HoleThe calibration tube shall contain three or more holes, equally spaced circumferentially around the tubeand longitudinally separated by a sufficient distance to allow distinct identification of the signal form each hole. The h
49、oles shallbe drilled radially and completely through the tube wall, with care being taken to avoid distortion of the tube while drilling. Theholes shall not be larger than 0.031 in. 0.8 mm in diameter. As an alternative, the producer may choose to drill one hole and runthe calibration standard through the test coil three times, rotating the tube approximately 120 each time. More passes with smallerangular increments may be used, provided tes
