1、Designation: B 75M 99 (Reapproved 2005)METRICStandard Specification forSeamless Copper Tube Metric1This standard is issued under the fixed designation B 75M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. A number in parentheses indicates the year of last reapproval. Asuperscript 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 specification2establishes the requirements
3、forseamless round, rectangular, and square copper tube suitablefor general engineering applications.1.1.1 Tubes made from any of the following Copper UNSNo. designations shall be supplied unless otherwise specified inthe contract or purchase order:Copper UNS No. Type of CopperC10100 Oxygen-free elec
4、tronicC10200 Oxygen-free without residual deoxidantsC10300 Oxygen-free, extra low phosphorusC10800 Oxygen-free, low phosphorusC12000 Phosphorus deoxidized, low residual phosphorusC12200 Phosphorus deoxidized, high residual phosphorus1.2 The values stated in SI units are the standard.1.3 This specifi
5、cation is the companion to inch-poundSpecification B75.1.4 The following hazard statement pertains only to the testmethod described in Sections 20.5.2.1, 21.2.9, and 21.2.10 ofthis specification: This standard does not purport to address allof the safety concerns, if any, associated with its use. It
6、 is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B75 Specification for Seamless Copper TubeB 153 Test Method for Expansion (Pin T
7、est) of Copper andCopper-Alloy Pipe and TubingB 170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB 193 Test Method for Resistivity of Electrical ConductorMaterialsB 251M Specification for General Requirements forWrought Seamless Copper and Copper-Alloy Tube Met-ricB 577 Test Metho
8、ds for Detection of Cuprous Oxide (Hy-drogen Embrittlement Susceptibility) in CopperB 601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastE3 Practice for Preparation of Metallographic SpecimensE8M Test Methods for Tension Testing of Metallic Mate-rials (Metric)E18 T
9、est Methods for Rockwell Hardness and RockwellSuperficial Hardness of Metallic MaterialsE53 Test Methods for Determination of Copper in Unal-loyed Copper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopper Alloys (Photometric Methods)E112 Test Methods for Determining the Average
10、GrainSizeE 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 CompositionE 527 Practice for Numbering Metals and Alloys (UNS)3. Terminology, Specific3.1 Definitions of Term
11、s Specific to This Standard:3.1.1 capable ofthe test need not be performed by theproducer of the material. However, should subsequent testingby the purchaser establish that the material does not meet theserequirements, the material shall be subject to rejection.3.1.2 unaided eye, nvisual inspection
12、without the use ofspecial equipment or ehancement excepting the use of correc-tive lenses.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Mar. 1, 2005. Publi
13、shed March 2005. Originallyapproved in 1984. Last previous edition approved in 1999 as B 75M 99.2For ASME Boiler and Pressure Vessel Code applications refer to relatedSpecification SB-75 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM C
14、ustomer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohoc
15、ken, PA 19428-2959, United States.4. Ordering Information4.1 Include the following information in orders for prod-ucts.4.1.1 ASTM designation and year of issue (for example,B 75M 99),4.1.2 Copper UNS No. (for example, C10100),4.1.3 Temper (Section 7),4.1.4 Dimensions; diameter or distance between pa
16、rallelsurfaces, and wall thickness (Section 14),4.1.5 How furnished; coils or straight lengths,4.1.6 Number of pieces or footage; each size and type,4.1.7 Total weight,4.1.8 When product is purchased for ASME Boiler andPressure Vessel Code application, and4.1.9 When product is purchased for agencies
17、 of the 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 Electrical mass resistivity test,4.2.2 Hydrogen embrittlement test,4.2.3 Hydrostatic test,4.2.4 Pneumatic test,4.2.5 Certification, and4.2.6 Test report.5. Mat
18、erial and Manufacture5.1 MaterialThe material of manufacture shall be billets,cast bars, or tube of Copper UNS4No. C10100, C10200,C10300, C10800, C12000, or C12200, and shall be of suchsoundness as to be suitable for processing into the tubularproducts described.5.2 ManufactureThe tube shall be manu
19、factured by suchhot- and cold-working processes as to produce a homogeneous,uniform wrought structure in the finished product. It shall becold drawn to the finished size and wall thickness. Whencold-drawn temper is required, the final drawing operationshall be such as to meet the specified temper. W
20、hen annealedtemper is required, the tube shall be annealed subsequent to thefinal cold draw.4Refer to Practice E 527 for explanation of Unified Numbering System (UNS).TABLE 1 Chemical RequirementsElementComposition, %Copper UNS No.C10100 C10200AC10300 C10800 C12000 C12200 C14200CopperB, min 99.99 99
21、.95 . . 99.90 99.9 99.40CopperB+ . . 99.95 99.95 . . .phosphorus, minPhosphorus . . 0.0010.005 0.0050.012 0.0040.012 0.0150.040 0.0150.040Arsenic . . . . . . 0.150.50ARefer to Table 1, Chemical Requirements, Grade 1, of Specification B 170 for impurity limits for Copper UNS No. C10100.BRefer to Tabl
22、e 1, Chemical Requirements, Grade 2, of Specification B 170 for impurity limits for Copper UNS No. C10200.TABLE 2 Mechanical Property Requirements of Drawn-Temper and Annealed-Temper TubeTemper DesignationOutside Diameter,or MajorDistance BetweenOutside ParallelSurfaces, mmWall Thickness, mmRockwell
23、 HardnessAverageGrainSize, mmTensileStrength,MPaYieldStrength,Amin,MPaStandard Former Scale HardnessH55 light-drawnBall all 30TC30 to 60 250325 205H58 drawn (general purpose) all all 30TC30 min 250 min 205H80 hard-drawnBup to 102 0.508 to 6.35, incl 30TC55 min 310 min 275O60 soft anneal all 0.381 to
24、 0.889 15TD60 max 0.040 min 205 min 62E0.889 and over FD50 max 0.040 min 205 min 62EO50 light anneal all 0.381 to 0.889 15TD65 max 0.040 max 205 min 62E0.889 and over FD55 max 0.040 max 205 min 62EAYield strength to be determined at 0.5 % extension under load.BLight-drawn and hard-drawn tempers are
25、normally available in round tubes only.CRockwell hardness values shall apply only to tubes having a wall thickness of 0.508 mm or over, to round tubes having an inside diameter of 8.0 mm or over, and torectangular including square tubes having an inside major distance between parallel surfaces of 5.
26、0 mm or over. Rockwell hardness tests shall be made on the insidesurface of the tube. When suitable equipment is not available for determining the specified Rockwell hardness, other Rockwell scales and values shall be specified subjectto agreement between purchaser and supplier.DRockwell hardness va
27、lues shall apply only to tubes having a wall thickness of 0.40 mm or over, to round tubes having an inside diameter of 8.0 or over, and torectangular including square tubes having an inside major distance between parallel surfaces of 5.0 mm or over. For all other tube no Rockwell values shall apply.
28、 Rockwellhardness tests shall be made on the inside surface of the tube. When suitable equipment is not available for determining the specified Rockwell hardness, other Rockwellscales and values shall be specified subject to agreement between purchaser and supplier.ELight-straightening operation sha
29、ll be permitted.B 75M 99 (2005)26. Chemical Composition6.1 The material shall conform to the requirements in Table1 for the specified Copper UNS No. designation.6.1.1 These specification limits do not preclude the presenceof other elements. When included in the contract or purchaseorder, and agreed
30、upon by the manufacturer or supplier and thepurchaser, limits shall be established and analysis required forunnamed elements.7. Temper7.1 The requirements and size availability of tube in thecold-drawn tempers H55, H58, and H80, as defined in Classi-fication B 601, are specified in Table 2.7.1.1 Rec
31、tangular, including square, tube shall normally besupplied only in H58 temper. When requested by the manu-facturer or supplier, and upon agreement with the purchaser,tube shall be supplied in H55 or H58 temper.7.1.1.1 For any combination of diameter and wall thicknessnot listed under H80 temper, the
32、 requirements specified forH58 temper shall apply.7.2 The requirements and size availability of tube in theannealed tempers O50 and O60, as defined in ClassificationB 601, are specified in Table 2.NOTE 1The purchaser shall confer with the manufacturer or supplierfor the availability of product in a
33、specific temper.NOTE 2Refer to Appendix X1 for recommended applications basedon temper.8. Grain Size Requirements8.1 Tube in the annealed temper shall conform to the grainsize specified in Table 2.9. Physical Property Requirements9.1 Electrical ResistivityWhen specified in the contract orpurchase or
34、der, tube ordered for electrical conductor applica-tion produced from Copper UNS No. C10100, C10200,C10300, or C12000 shall have an electrical mass resistivity,Vg/m2, not to exceed the following limit for the specifiedcopper and temper when tested in accordance with TestMethod B 193:TemperCopper UNS
35、 No.C10100 C10200 C10300 C12000O60, O50 0.151 76 0.153 28 0.156 14 0.170 31H55, H58, H80 0.156 14 0.157 37 0.159 40 0.174 18NOTE 3Refer to Appendix X2 for the International Annealed CopperStandard (IACS) electrical conductivity equivalents.10. Mechanical Property Requirements10.1 Tensile and Yield S
36、trength:10.1.1 The tube shall conform to the requirements of Table2 for the specified temper and wall thickness.10.1.2 For any combination of diameter and wall thicknessnot listed under H80, the requirements for H58 shall apply.10.2 Rockwell Hardness:10.2.1 The tube shall conform to the requirements
37、 of Table2 for the specified temper and wall thickness.10.2.1.1 The Rockwell Hardness values for tube in the H55,H58, and H80 temper shall apply only to the following:(a) Tubes having a wall thickness of 0.508 mm and over,(b) Round tubes having an inside diameter of 8.0 mm andover,(c) Rectangular an
38、d square tubes having major distancesbetween parallel surfaces of 5 mm and over.10.2.1.2 The Rockwell Hardness values for tube in the O60and O50 temper shall apply only to the following:(a) Tubes having a wall thickness of 0.40 mm and over;(b) Round tubes having an inside diameter of 8 mm andover;(c
39、) Rectangular and square tubes having inside major dis-tances between parallel surfaces of 5 mm and over.10.3 StraighteningIt shall not be prohibited to use lightstraightening for tube in the O60 and O50 temper.11. Performance Requirements11.1 Expansion Test for Round TubeWhen specified in thecontra
40、ct or purchase order, annealed tubes shall be capable ofwithstanding an expansion of the outside diameter of 40 % fortube 19.0 mm and under and 30 % for tube over 19.0 mm. Thetube shall show no cracking or rupture visible to the unaidedeye.12. Microscopical Examination12.1 Tubes furnished in Copper
41、UNS No. C10100, C10200,C10300, and C12000 shall be essentially free of cuprous oxideas determined by Procedure A of Test Methods B 577.13. Hydrogen Embrittlement13.1 When specified in the contract or purchase order, tubesproduced in all designated copper material shall be capable ofconforming to the
42、 requirements of Procedure B of TestMethods B 577.14. Purchases for U.S. Government Agencies14.1 When the contract or purchase order stipulates thepurchase is for an agency of the U.S. Government, the tubesfurnished shall conform to the conditions specified in theSupplementary Requirements of Specif
43、ication B 251M.15. Nondestructive Test15.1 The tubes shall be tested in the drawn tempers or asdrawn before the final-annealed temper unless otherwiseagreed upon between the manufacturer and the purchaser.15.2 Electromagnetic (Eddy-Current) Test:15.2.1 Each tube up to and including 79 mm in outsided
44、iameter shall be subjected to test.15.2.2 When tested in accordance with Practice E 243,tubes which do not actuate the signaling device of the testingunit shall be considered as conforming to the requirements ofthe test.15.3 Hydrostatic Pressure TestWhen specified in thecontract or purchase order, e
45、ach tube shall be capable ofwithstanding an internal hydrostatic pressure sufficient toproduce a fiber stress of 41 MPa without leakage. The tubeneed not be subjected to a pressure gage reading over 6.9 MPaunless specifically stipulated in the contract or purchase order.B 75M 99 (2005)315.4 Pneumati
46、c Pressure TestWhen specified in the con-tract or purchase order, each tube shall be capable of with-standing an internal air pressure of 400 kPa, minimum, for 5 swithout leakage.16. Dimensions, Mass, and Permissible Variations16.1 The dimensions and tolerances for product furnished tothis specifica
47、tion shall be as specified in the following tablesand related sections of the current edition of SpecificationB 251M:16.1.1 Wall Thickness TolerancesRefer to Tables 1 and 2.16.1.2 Tolerances for Diameter or Distance Between Par-allel SurfacesRefer to Tables 3 and 4.16.1.3 Length TolerancesRefer to T
48、ables 5 and 6.16.1.4 Straightness ToleranceRefer to Table 7.16.1.5 Corner Radius for Rectangular Including SquareTubeRefer to Table 8.16.1.6 Roundness, Squareness of Cut and Twist Tolerancesfor Rectangular and Square TubesRefer to titled sections.16.2 Length Tolerances for Tube in CoilsRefer to Tabl
49、e 3,Table 4, and Table 5 of Specification B 75M.17. General Requirements17.1 The following sections of Specification B 251M are apart of this specification.17.1.1 Terminology, General,17.1.2 Material and Manufacturer,17.1.3 Workmanship, Finish, and Appearance,17.1.4 Significance of Numerical Limits,17.1.5 Inspection,17.1.6 Rejection and Rehearing,17.1.7 Certification,17.1.8 Mill Test Reports,17.1.9 Packaging and Package Marking, and17.1.10 Supplementary Requirements.17.2 In addition, when a section with an identical title tothose referenced in 17.
