1、Designation: B 395/B 395M 02Standard 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 specif
3、ication2establishes the requirements for con-denser, evaporator, and heat exchanger U-bends that aremanufactured from seamless copper and copper alloy tube.1.2 UnitsThe values stated in either inch-pound units orSI units are to be regarded separately as the standard. Withinthe text, the SI units are
4、 shown in brackets. The values statedin each system are not exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems could result in nonconformancewith the specification.1.3 This specification is applicable to product 2 in. 50 mmor less,
5、 inclusive, in diameter.1.4 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 deoxidantsC10300 . oxygen-free, extra lo
6、w phosphorusC10800 . oxygen-free, low phosphorusC12000 DLPAphosphorized, low residual phosphorusC12200 DHPAphosphorized, high residual phospho-rusC14200 DPAAphosphorized, arsenicalC19200 . phosphorized, 1 % ironC23000 . red brassC44300 Type B admiralty metalC44400 Type C admiralty metalC44500 Type D
7、 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-(modified for welding)C72200 . copper-nic
8、kelADesignations listed in Classification B 224.1.5 The following pertains only to the test method describedin Sections 11 and 15, of this specification: This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thiss
9、tandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.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
10、 ASTM Standards:B 153 Test Method for Expansion (Pin Test) of Copper andCopper-Alloy Pipe and Tubing3B 154 Test Method for Mercurous Nitrate Test for Copperand Copper Alloys3B 170 Specification for Oxygen-Free Electrolytic CopperRefinery Shapes3B 224 Classification of Coppers3B 601 Practice for Temp
11、er Designations for Copper andCopper AlloysWrought and Cast3B 846 Terminology for Copper and Copper Alloys3B 858 Test Method for Ammonia Vapor Test for Determin-ing Susceptibility to Stress Corrosion Cracking in CopperAlloys3B 900 Practice for Packaging Copper and Copper AlloyMill-Products for U.S.
12、Government Agencies3E 3 Practice for Preparation of Metallographic Specimens4E 8 Test Methods for Tension Testing of Metallic Materials4E 8M Test Methods for Tension Testing of Metallic Mate-rials Metric4E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specificati
13、ons51This specification is under the jurisdiction of ASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Apr. 10, 2002. Published July 2002. Originallypublished as B 395 62 T. Last previous edition B 395 95.2F
14、or ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SB-395 in Section II of that Code.3Annual Book of ASTM Standards, Vol 02.01.4Annual Book of ASTM Standards, Vol 03.01.5Annual Book of ASTM Standards, Vol 14.02.1*A Summary of Changes section appears at the end of this st
15、andard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.E 53 Test Methods for Chemical Analysis of Copper6E 54 Test Methods for Chemical Analysis of SpecialBrasses and Bronzes6E 62 Test Methods for Chemical Analysis of Copper andCopper
16、 Alloys (Photometric Methods)6E 75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys6E 112 Test Methods for Determining Average Grain Size4E 118 Test Methods for Chemical Analysis of Copper-Chromium Alloys6E 243 Practice for Electromagnetic (Eddy-Current) Exami-nation
17、of Copper and Copper-Alloy Tubes7E 255 Practice for Sampling Copper and Copper Alloys forDetermination of Chemical Composition6E 478 Test Methods for Chemical Analysis of CopperAlloys73. Terminology3.1 For the definitions of terms related to copper and copperalloys, refer to Terminology B 846.3.2 De
18、finitions: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 than onewall-gage thickness contained within the length of the tube.3.3 Definitions of Terms Specific to This Standard:3.3.1 squareness of cutthe maximum deviation of oneside of
19、 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. Ordering Information4.1 Orders for product under this specification shall includethe following information:4.1.1 ASTM designation and ye
20、ar 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),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 subseq
21、uently 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 order, when required:4.2.1 Tension test (see 9.1),4.2.2 Relief anneal of U-bent portion of copper-nickelU-bend tubes (see 7.6),4
22、.2.3 Dual-gage, a schedule of tubes required in dual-gageand length of heavy gage section must be furnished with thisoption (see 5.2.1 and 12.2.3),4.2.4 Certification, if required (see 21), and4.2.5 Mill Test Report, if required (see 22).4.3 In addition, when material is purchased for agencies ofthe
23、 U.S. Government, it shall be in accordance with therequirements specified in the Supplementary Requirementssection, when 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 produ
24、ct shall have the propertiesand characteristics prescribed in this specification for theapplicable alloy and temper.5.2 Manufacture:5.2.1 Tubes required to be U-bent to a small radius shall, ifspecified, be furnished as dual-gage tubes.5.2.1.1 These tubes shall be made prior to U-bending withthe wal
25、l 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.5.2.1.2 Unless otherwise specified, dual-gage tubes shall bemade to constant inside diamet
26、er; that is, the increased wallthickness shall be obtained by increasing the outside diameterof the finished tube in the central heavy gage section.5.2.2 The bent portion of the U-bend tube shall be substan-tially uniform in curvature.6. Chemical Composition6.1 The material shall conform to the chem
27、ical compositionrequirements specified in Table 1 for the copper or copper alloyspecified in the ordering information.6.2 These specification limits do not preclude the presenceof unnamed elements. By agreement between the manufac-turer, or supplier, and purchaser, analysis may be required andlimits
28、 established for elements not specified.6.3 Copper Alloy UNS No. C19200Copper may be takenas the difference between the sum of all the elements analyzedand 100 %. When all the elements in Table 1 are analyzed, theirsum shall be 99.8 % minimum.6.4 For copper alloys in which copper is specified as the
29、remainder, copper may be taken as the difference between thesum of all the elements analyzed and 100 %.6.4.1 When all the 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
30、.5C71000 99.5C71500 99.5C71520 99.5C72200 99.86.5 For copper alloys in which zinc is specified as theremainder, either copper or zinc may be taken as the differencebetween the sum of all the elements analyzed and 100 %.6.5.1 When all the elements in Table 1 are analyzed, theirsum shall be as shown i
31、n the following table.6Annual Book of ASTM Standards, Vol 03.05.7Annual Book of ASTM Standards, Vol 03.06.B 395/B 395M2TABLE1ChemicalRequirementsCopperorCopperAlloyUNSNo.Composition,%CopperATinAluminumNickel,inclCobaltLead,maxIronZincManganeseArsenicAntimonyPhosphorusChromiumOtherNamedElementsC10200
32、B99.95 minC.10ppmmaxOC1030099.95Dmin.0.0010.005.C1080099.95Dmin.0.0050.012.C1200099.90 min.0.0040.012.C1220099.90 min.0.0150.040.C1420099.40 min.0.150.50.0.0150.040.C19200E98.5min.0.81.20.20 max.0.010.04.C23000F84.086.0.0.050.05 maxremainder.C44300F70.073.00.91.2.0.070.06 maxremainder.0.020.06.C4440
33、0F70.073.00.91.2.0.070.06 maxremainder.0.020.10.C44500F70.073.00.91.2.0.070.06 maxremainder.0.020.10.C60800Gremainder.5.06.5.0.100.10 max.0.020.35.C68700G76.079.0.1.82.5.0.070.06 maxremainder.0.020.06.C70400Gremainder.4.86.20.051.31.71.0max0.30to0.8.C70600Gremainder.9.011.00.05H1.01.81.0maxH1.0maxH.
34、C70620G86.5min.9.011.00.021.01.80.501.0.0.05C 0.02P 0.02SC71000Gremainder.19.023.00.05H0.501.01.0max1.0maxH.H.HC71500remainder.29.033.00.05H0.401.01.0maxH1.0max.DC7152065.0min.29.033.00.020.401.00.501.0.0.05C 0.02P 0.02SC72200Eremainder.15.018.00.05H0.501.01.0maxH1.0max.0.300.70H,IASilvercountingasc
35、opper.BThisisahighconductivitycopperwhichhas,intheannealedcondition,aminimumconductivityof100%IACS.CCuisdeterminedbythedifferenceintheimpuritytotalans100%.DIncludesP.ECu+sumofnamedelements,99.8%min.FCu+sumofnamedelements,99.6%min.GCu+sumofnamedelements,99.5%min.HWhentheproductisforsubsequentweldinga
36、pplications,andsospecifiedbythepurchaser,zincshallbe0.50%,max,lead0.02%,max,phosphorus0.02%,max,sulfur0.02%,max,andcarbon0.05%,max.ISiliconshallbe0.03%max,titaniumshallbe0.03%max.B 395/B 395M3Copper Alloy UNS No.Copper Plus NamedElements, % minC23000 99.8C44300 99.6C44400 99.6C44500 99.6C68700 99.57
37、. 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, C71520, andC72200 shall be in the annealed temper (O61), unless other-wise specified in the p
38、urchase 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, C70620, and C72200 shall, ifspecified, be made in the light-drawn temper (H55).7.4 Prior to b
39、ending, 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 in the drawn, stress-relieved temper (HR50), when specified.7.6 The U-bend portion of tub
40、es 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. C70400, C70600, C70620, C71000, C71500,C71520, and C72200 shall be relief annealed (HR) aft
41、erbending.NOTE 1Some tubes, when subjected to aggressive environments, maybe subject to stress-corrosion cracking failure because of the residualtensile stresses developed in straightening. For such applications, it issuggested that tubes of Copper Alloy UNS Nos. C23000, C44300,C44400, C44500, C6080
42、0, 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 the condition of straightness, for tube so ordered, shall beto the requirements agreed upo
43、n 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 and shall show uniform andcomplete recrystallization.8.2 Materials other than Copper Alloy
44、 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), or to the U-bent portion of the product.9. Mechanical Property Requirements9.1 Tensil
45、e Property 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 Table 3 for product specified in SI units.10. Performance Requirements10.1 Expansion Test:
46、Tube specimens selected for test shall withstand the expan-sion shown in Table 4 when expanded in accordance with TestMethod B 153.11. Other Requirements11.1 Flattening TestWhen specified in the contract orpurchase order, the flattening test described in the Test Methodsection in 17.2.1.3 shall be p
47、erformed.11.1.1 During inspection, the flattened areas of the test-specimen shall be free of defects, but blemishes of a nature thatdo not interfere with the intended application are acceptable.11.2 Mercurous Nitrate Test or Ammonia Vapor Test:11.2.1 The mercurous nitrate or ammonia vapor test isreq
48、uired only for Copper Alloy UNS Nos. C23000, C44300,C44400, C44500, C60800, and C68700. (WarningMercuryis a definite health hazard and therefore equipment for thedetection and removal of mercury vapor produced in volatil-ization is recommended. The use of rubber gloves in testing isadvisable.)TABLE
49、2 Tensile RequirementsCopper or Copper Alloy UNS No.Temper Designation TensileStrength,min, ksiBYieldStrength,Amin, ksiBElongation in2 in., min, %Standard FormerC10200, C10300, C10800, C12000, C12200,C14200H55 light drawn 36 30 .C19200 H55 light drawn 40 35 .C19200 O61 annealed 38 12 .C23000 O61 annealed 40 12 .C44300, C44400, C44500 O61 annealed 45 15 .C60800C68700O61O61annealedannealed50501918.C70400C70400O61H55annea
