1、Designation: B 395/B 395M 08Standard Specification forU-Bend Seamless Copper and Copper Alloy Heat Exchangerand Condenser Tubes1This standard is issued under the fixed designation B 395/B 395M; the number immediately following the designation indicates the yearof original adoption or, in the case of
2、 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 for use by agencies of the Department of Defense.1. Scope*1.1 This specifi
3、cation2establishes the requirements for con-denser, evaporator, and heat exchanger U-bend tubes that aremanufactured from seamless copper and copper alloy tube.1.2 The following safety hazard caveat pertains only to thetest methods described in this specification.1.2.1 This standard does not purport
4、 to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and to determine theapplicability of regulatory limitations prior to use.1.3 UnitsThe values stated in either SI units or
5、 inch-pound units are to be regarded separately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.4 This specification is ap
6、plicable to product 2 in. 50 mmor less, inclusive, in diameter.1.5 The product shall be produced from one of the followingcoppers or copper alloys, as specified in the ordering informa-tion:Copper orCopper Alloy Previously UsedUNS No. Designation Type of MetalC10200 OFAoxygen-free without residual d
7、eoxidantsC10300 . oxygen-free, extra low phosphorusC10800 . oxygen-free, low phosphorusC12000 DLPAphosphorized, low residual phosphorusC12200 DHPAphosphorized, high residual phospho-rusC14200 DPAAphosphorized, arsenicalC19200 . phosphorized, 1 % ironC23000 . red brassC44300 Type B admiralty metalC44
8、400 Type C admiralty metalC44500 Type D admiralty metalC60800 . aluminum bronzeC68700 Type B aluminum brassC70400 . 95-5 copper-nickelC70600 . 90-10 copper-nickelC70620 . 90-10 copper-nickel-(modified for welding)C71000 . 80-20 copper-nickelC71500 . 70-30 copper-nickelC71520 . 70-30 copper-nickel-(m
9、odified for welding)C72200 . copper-nickelADesignations listed in Classification B 224.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:3B 153 Test Method for Expa
10、nsion (Pin Test) of Copper andCopper-Alloy Pipe and TubingB 154 Test Method for Mercurous Nitrate Test for CopperAlloysB 224 Classification of CoppersB 601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastB 846 Terminology for Copper and Copper AlloysB 858 Test Metho
11、d for Ammonia Vapor Test for Determin-ing Susceptibility to Stress Corrosion Cracking in CopperAlloysB 900 Practice for Packaging of Copper and Copper AlloyMill Products for U.S. Government AgenciesE3 Guide for Preparation of Metallographic SpecimensE8 Test Methods for Tension Testing of Metallic Ma
12、terialsE8M Test Methods for Tension Testing of Metallic Mate-rials Metric4E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in Unal-loyed Copper by Gravimetry1This specification is under the jurisdiction ofAS
13、TM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved April 1, 2008. Published May 2008. Originallyapproved in 1962. Last previous edition approved in 2002 as B 395/B 395M 02.2For ASME Boiler and Pressure Vessel C
14、ode applications see related Specifi-cation SB-395 in Section II of that Code.3For referenced ASTM 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 on
15、the ASTM website.4Withdrawn.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.E62 Test Methods for Chemical Analysis of Copper andCopper Alloys (Photometric Methods)E112
16、 Test Methods for Determining Average Grain SizeE118 Test Methods for Chemical Analysis of Copper-Chromium AlloysE 243 Practice for Electromagnetic (Eddy-Current) Exami-nation of Copper and Copper-Alloy TubesE 255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical Compos
17、itionE 478 Test Methods for Chemical Analysis of CopperAlloys3. Terminology3.1 For the definitions of terms related to copper and copperalloys, refer to Terminology B 846.3.2 Definitions:3.2.1 u-bend tube, na tube bent 180 in a single plane intoa U-shape.3.2.2 dual-gage tube, na tube which has more
18、than onewall-gage thickness contained within the length of the tube.3.2.3 squareness of cut, nthe maximum deviation of oneside of a cross section of tube from the opposite side, whenmeasured against the projected perpendicularity of the plane ofthe projected center of the tube at the ends.4. Orderin
19、g Information4.1 Orders for product under this specification shall includethe following information:4.1.1 ASTM designation and year of issue,4.1.2 Copper or copper alloy UNS No. designation (Section6),4.1.3 Temper (Section 7),4.1.4 DimensionsXdiameter and wall thickness of thetube (see 12.1 and 12.2
20、),4.1.5 Schedule of bending radii (see 12.2.5),4.1.6 Length of U-bend tube legs (see 12.2.8),4.1.7 If the product is to be subsequently welded (see Table1), and4.1.8 If the product is to be for U.S. Government.4.2 The following options are available and shall be speci-fied at the time of placing the
21、 order, when required:4.2.1 Heat identification or traceability details.4.2.2 Tension test (see 9.1),4.2.3 Relief anneal of U-bent portion of copper-nickelU-bend tubes (see 7.6),4.2.4 Dual-gage, a schedule of tubes required in dual-gageand length of heavy gage section must be furnished with thisopti
22、on (see 5.2.2 and 12.2.3),4.2.5 Certification, if required (see 21), and4.2.6 Mill Test Report, if required (see 22).4.3 In addition, when material is purchased for agencies ofthe U.S. Government, it shall be in accordance with therequirements specified in the Supplementary Requirementssection, when
23、 specified in the contract or purchase order.5. Materials and Manufacture5.1 Materials:5.1.1 The material of manufacture shall be of such qualityand purity that the finished product shall have the propertiesand characteristics prescribed in this specification for theapplicable alloy and temper.5.1.2
24、 In the event heat identification or traceability isrequired, the purchaser shall specify the details desired.NOTE 1Due to the discontinuous nature of the processing of castinginto wrought products, it is not always practical to identify a specificcasting analysis with a specific quantity of materia
25、l.5.2 Manufacture:5.2.1 The product shall be manufactured by such hot work-ing, cold working and annealing processes as to produce auniform wrought structucture in the finished product.5.2.2 Tubes required to be U-bent to a small radius shall, ifspecified, be furnished as dual-gage tubes.5.2.2.1 The
26、se tubes shall be made prior to U-bending withthe wall thickness of the central section of the tube length,increased the equivalent of one Stubs or Birmingham WireGage (BWG) thicker than the wall thickness specified for thestraight leg portion of the U-bend tube.5.2.2.2 Unless otherwise specified, d
27、ual-gage tubes shall bemade to constant inside diameter; that is, the increased wallthickness shall be obtained by increasing the outside diameterof the finished tube in the central heavy gage section.5.2.3 The bent portion of the U-bend tube shall be substan-tially uniform in curvature.6. Chemical
28、Composition6.1 The material shall conform to the chemical compositionrequirements specified in Table 1 for the copper or copper alloyUNS No. specified in the ordering information.6.1.1 Results of analysis on a product (check) sample shallconform to the composition requirements within the permittedan
29、alytical variance specified in Table 16.2 These composition limits do not preclude the presenceof unnamed elements. By agreement between the manufacturerand purchaser, limits may be established for elements notspecified.6.3 Copper Alloy UNS No. C19200Copper may be takenas the difference between the
30、sum of all the elements analyzedand 100 %.When all the elements inTable 1 are analyzed, theirsum shall be 99.8 % minimum.6.4 For copper alloys in which copper is specified as theremainder, copper may be taken as the difference between thesum of all the elements analyzed and 100 %.6.4.1 When all the
31、elements in Table 1 are analyzed, theirsum shall be as shown in the following table.Copper Alloy UNS No.Copper Plus NamedElements, % minC60800 99.5C70400 99.5C70600 99.5C70620 99.5C71000 99.5C71500 99.5C71520 99.5C72200 99.86.5 For copper alloys in which zinc is specified as theremainder, either cop
32、per or zinc may be taken as the differencebetween the sum of all the elements analyzed and 100 %.B 395/B 395M 082TABLE1ChemicalRequirementsCopperorCopperAlloyUNSNo.Composition,%CopperATinAluminumNickel,inclCobaltLead,maxIronZincManganeseArsenicAntimonyPhosphorusChromiumOtherNamedElementsC10200A,B99.
33、95 min.10ppmmaxOC10300A99.95Cmin.0.0010.005.C10800A99.95Cmin.0.0050.012.C12000A99.90 min.0.0040.012.C12200A99.9min.0.0150.040.C14200A99.4min.0.150.50.0.0150.040.C19200D98.5min.0.81.20.20max.0.010.04.C23000D84.086.0.0.050.05 maxremainder.C44300E70.073.00.91.2.0.070.06 maxremainder.0.020.06.C44400E70.
34、073.00.91.2.0.070.06 maxremainder.0.020.10.C44500E70.073.00.91.2.0.070.06 maxremainder.0.020.10.C60800A,Fremainder.5.06.5.0.100.10 max.0.020.35.C68700A,F76.079.0.1.82.5.0.070.06 maxremainder.0.020.06.C70400A,Fremainder.4.86.20.051.31.71.0max0.30to0.8.C70600A,Fremainder.9.011.00.05G1.01.81.0maxG1.0ma
35、xG.C70620A,F86.5min.9.011.00.021.01.80.50max1.0max.0.02max.0.05Cmax0.02SC71000A,Fremainder.19.023.00.05G1.0max1.0max1.0maxG.G.GC71500A,Fremainder.29.033.00.05G0.401.01.0maxG1.0max.CC71520A,F65.0min.29.033.00.020.401.00.50max1.0max.0.02max.0.05Cmax0.02SmaxC72200A,Dremainder.15.018.00.05G0.501.01.0max
36、G1.0max.G0.300.70G,HASilvercountingascopper.BThisisahighconductivitycopperwhichhas,intheannealedcondition,aminimumconductivityof100%IACS.CIncludesP.DCu+sumofnamedelements,99.8%min.ECu+sumofnamedelements,99.6%min.FCu+sumofnamedelements,99.5%min.GWhentheproductisforsubsequentweldingapplications,andsos
37、pecifiedbythepurchaser,zincshallbe0.50%,max,lead0.02%,max,phosphorus0.02%,max,sulfur0.02%,max,andcarbon0.05%,max.HSiliconshallbe0.03%max,titaniumshallbe0.03%max.B 395/B 395M 0836.5.1 When all the elements in Table 1 are analyzed, theirsum shall be as shown in the following table.Copper Alloy UNS No.
38、Copper Plus NamedElements, % minC23000 99.8C44300 99.6C44400 99.6C44500 99.6C68700 99.57. Temper7.1 Tempers, as defined in Practice B 601, are as follows:7.2 Prior to U-bending, tubes of Copper Alloy UNS Nos.C23000, C44300, C44400, C44500, C60800, C68700,C70400, C70600, C70620, C71000, C71500, C7152
39、0, andC72200 shall be in the annealed temper (O61), unless other-wise specified in the purchase order.7.3 Prior to bending, U-bend tubes of Copper Alloy UNSNos. C10200, C10300, C10800, C12000, C12200, and C14200shall be in light drawn temper (H55). Tubes of Copper AlloyUNS Nos. C70400, C70600, C7062
40、0, and C72200 shall, ifspecified, be made in the light-drawn temper (H55).7.4 Prior to bending, U-bend tubes of Copper Alloy UNSNo. C19200 shall be in the annealed (O61) or light drawntemper (H55) as specified.7.5 Prior to bending, U-bend tubes of Copper Alloy UNSNo. C71500 or C71520 shall be made i
41、n the drawn, stress-relieved temper (HR50), when specified.7.6 The U-bend portion of tubes furnished in Copper AlloyUNS Nos. C23000, C44300, C44400, C44500, C60800, andC68700 shall be relief annealed (HR) after bending. If speci-fied, the U-bend portion of tubes furnished in Copper AlloyUNS Nos. C70
42、400, C70600, C70620, C71000, C71500,C71520, and C72200 shall be relief annealed (HR) afterbending.NOTE 2Some tubes, when subjected to aggressive environments, maybe subject to stress-corrosion cracking failure because of the residualtensile stresses developed in straightening. For such applications,
43、 it issuggested that tubes of Copper Alloy UNS Nos. C23000, C44300,C44400, C44500, C60800, and C68700 be subjected to a stress relieving(HR) thermal treatment subsequent to straightening. If required, this mustbe specified on the purchase order or contract. Tolerances for roundnessand length, and th
44、e condition of straightness, for tube so ordered, shall beto the requirements agreed upon by the manufacturer and purchaser.8. Grain Size of Annealed Tempers8.1 Samples of annealedtemper (O61) tubes selected fortest shall be subjected to microscopical examination at amagnification of 75 diameters an
45、d shall show uniform andcomplete recrystallization.8.2 Materials other than Copper Alloy UNS No. C19200shall have an average grain size within the limits of 0.010 to0.045 mm.8.3 The requirements of this section do not apply to productof the light-drawn temper (H55) drawn, stress-relieved temper(HR50
46、), or to the U-bent portion of the product.9. Mechanical Property Requirements9.1 Tensile Strength Requirements:9.1.1 Product specified to meet the requirements of ASMEBoiler and Pressure Vessel Code shall have tensile propertiesas prescribed in Table 2 for product specified in inch-poundunits or Ta
47、ble 3 for product specified in SI units. When testedin accordance with Test Methods E8or E8M.10. Performance Requirements10.1 Expansion Test:10.1.1 When specified in the contract or purchaser order,tube specimens selected for test shall withstand the expansionshown in Table 4 when expanded in accord
48、ance with TestMethod B 153.10.1.2 The expanded tube shall show no cracking or otherdefects visible to the unaided eye.10.2 Flattening Test:10.2.1 When specified in the contract or purchase order, theflattening test described in the Test Method section in 17.2.1.3shall be performed.10.2.2 During insp
49、ection, the flattened areas of the testspecimen shall be free of defects, but blemishes of a nature thatdo not interfere with the intended application are acceptable.TABLE 2 Tensile RequirementsCopper or Copper Alloy UNS No.Temper Designation TensileStrength,min, ksiBYieldStrength,Amin, ksiBElongation in2in.,min,%Standard FormerC10200, C10300, C10800, C12000, C12200,C14200H55 light drawn 36 30 .C19200 H55 light drawn 40 35
