ASTM B640-00(2006)

Standard Specification for Welded Copper Tube for Air Conditioning and Refrigeration Service

SCOPE
1.1 This specification establishes the requirements for welded copper tube for air conditioning and refrigeration service for use in connections, repairs, and alterations. The tube shall be made from one of the following coppers:
1.2 Copper UNS No. C12200 shall be furnished, unless otherwise specified. The copper tube shall be supplied in annealed coils or drawn temper straight lengths.
1.3 UnitsThe values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 14-Mar-2006
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.04 - Pipe and Tube

Relations

• Replaces: ASTM B640-00 - Standard Specification for Welded Copper Tube for Air Conditioning and Refrigeration Service
• Effective Date: 15-Mar-2006
• Replaced By: ASTM B640-07 - Standard Specification for Welded Copper Tube for Air Conditioning and Refrigeration Service
• Effective Date: 01-Apr-2007
• Referred By: ASTM B828-16 - Standard Practice for Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings
• Effective Date: 15-Mar-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 640 – 00 (Reapproved 2006)
Standard Specification for
Welded Copper Tube for Air Conditioning and Refrigeration
Service
This standard is issued under the fixed designation B640; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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* B153 Test Method for Expansion (Pin Test) of Copper and
Copper-Alloy Pipe and Tubing
1.1 This specification establishes the requirements for
B170 SpecificationforOxygen-FreeElectrolyticCopper—
welded copper tube for air conditioning and refrigeration
Refinery Shapes
serviceforuseinconnections,repairs,andalterations.Thetube
B224 Classification of Coppers
shall be made from one of the following coppers:
B577 Test Methods for Detection of Cuprous Oxide (Hy-
Copper UNS Previously Used Type of Copper
A
drogen Embrittlement Susceptibility) in Copper
No. Designation
B601 Classification for Temper Designations for Copper
C10100 OFE oxygen-free electronic
and Copper Alloys—Wrought and Cast
C10200 OF oxygen-free without-residual oxidants
B846 Terminology for Copper and Copper Alloys
C12000 DLP phosphorized, low-residual phosphorus
C12200 DHP phosphorized, high-residual phosphorus
E3 Guide for Preparation of Metallographic Specimens
E8 Test Methods for Tension Testing of Metallic Materials
A
Designation listed in Classification B 224.
E8M Test Methods for Tension Testing of Metallic Mate-
1.2 Copper UNS No. C12200 shall be furnished, unless
rials [Metric]
otherwise specified. The copper tube shall be supplied in
E29 Practice for Using Significant Digits in Test Data to
annealed coils or drawn temper straight lengths.
Determine Conformance with Specifications
1.3 Units—The values stated in inch-pound units are to be
E53 Test Method for Determination of Copper in Unal-
regarded as standard. The values given in parentheses are
loyed Copper by Gravimetry
mathematical conversions to SI units which are provided for
E62 Test Methods for Chemical Analysis of Copper and
information only and are not considered standard.
Copper Alloys (Photometric Methods)
1.4 This standard does not purport to address all of the
E112 Test Methods for Determining Average Grain Size
safety concerns, if any, associated with its use. It is the
E243 Practice for Electromagnetic (Eddy-Current) Exami-
responsibility of the user of this standard to establish appro-
nation of Copper and Copper-Alloy Tubes
priate safety and health practices and determine the applica-
E255 Practice for Sampling Copper and CopperAlloys for
bility of regulatory limitations prior to use.
the Determination of Chemical Composition
2. Referenced Documents
3. Terminology
2.1 ASTM Standards:
3.1 For definitions of terms related to copper and copper
alloys, refer to Terminology B846.
3.2 Definitions of Terms Specific to This Standard:
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
3.2.1 coil, n—a length of the product wound into a series of
and Tube.
connected turns. The unqualified term “coiled” as applied to
Current edition approved March 15, 2006. Published April 2006. Originally
tube usually refers to a bunched coil.
approved in 1978. Last previous edition approved in B640–00.
3.2.1.1 bunched, adj—a coil in which the turns are bunched
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
and held together such that the cross section of the bunched
Standards volume information, refer to the standard’s Document Summary page on
turns is approximately circular.
the ASTM website.
*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.
B 640 – 00 (2006)
3.2.1.2 level or traverse wound, adj—a coil in which the 5.2.3.2 Weldedtubethathasbeenmechanicallyworkedinto
turns are wound into layers parallel to the axis of the coil such asmoothtubewithouttheneedforinternalorexternalscarfing,
that successive turns in a given layer are next to one another. or other metal removal and subsequently cold drawn over a
3.2.2 flash, n—the metal that protrudes at the weld, both on mandrel and annealed as necessary to conform to the specified
the inside and outside of a tube, as a result of the pressure size and temper.
applied when a forge-type seam is produced. The two types of 5.2.4 CoiledlengthsspecifiedasO60,soft-annealedtemper,
flash are internal flash and external flash. shall be bright annealed after coiling, then dehydrated, and
3.2.3 tube, air-conditioning, n—a welded copper tube con- capped, plugged, crimped, or otherwise closed at both ends so
forming to a standard series of sizes and to specified internal astomaintaintheinternalcleannessofthetubingundernormal
cleanness requirements, normally furnished in drawn temper conditions of handling and storage.
straight lengths, with the ends capped or sealed. 5.2.5 Straight lengths specified as H58, hard-drawn temper,
3.2.4 tube, refrigeration-service, n—a welded copper tube shall be cleaned and capped, plugged, or otherwise closed at
conforming to a standard series of sizes and to special internal both ends so as to maintain the internal cleanness of the tubing
cleannessanddehydrationrequirements,normallyfurnishedin under normal conditions of handling and storage.
soft temper coils, with ends capped or sealed.
6. Chemical Composition
4. Ordering Information
6.1 The product shall conform to the chemical composi-
4.1 Orders for product under this specification shall include tional requirements in Table 1 for the Copper UNS No.
the following information: designation specified in the ordering information.
4.1.1 ASTM designation and year of issue, 6.2 These composition limits do not preclude the presence
4.1.2 Copper UNS No. designation, of other elements. Limits may be established and analysis
4.1.3 Temper (Section 7), required for unnamed elements by agreement between the
4.1.4 Dimensions: diameter, wall thickness, length, and so manufacturer or supplier and the purchaser.
forth (Section 11),
7. Temper
4.1.5 Howfurnished(coiledlengthsorstraightlengths),and
4.1.6 Quantity: total weight or number of pieces or coils of 7.1 The standard tempers for products described in this
specification are given in Table 2.
each copper, size, and temper.
4.2 The following options are available and should be 7.1.1 Drawn general purpose H58.
7.1.2 Annealed temper O60.
specified at the time of placing the order when required:
4.2.1 Hydrogen embrittlement susceptibility (9.3), 7.2 Tempers are defined in Classification B601. Other
special anneal tempers may be supplied as agreed upon
4.2.2 Electromagnetic (eddy-current) test on coiled lengths
between the manufacturer or supplier and the purchaser.
(10.1),
4.2.3 Expansion test (9.1),
8. Mechanical Property Requirements
4.2.4 Cleanness test (10.2),
8.1 Tensile Strength Requirements:
4.2.5 Flattening test (9.4),
8.1.1 Product furnished under this specification shall con-
4.2.6 Reverse bend test (9.5),
form to the tensile requirements prescribed in Table 2 when
4.2.7 Certification (Section 21),
tested in accordance with Test MethodsE8 andE8M.
4.2.8 Test report (Section 18), and
8.1.1.1 Acceptance or rejection based upon mechanical
4.2.9 When product is purchased for agencies of the U.S.
properties shall depend only on tensile strength.
Government (10.3).
9. Performance Requirements
5. Materials and Manufacture
9.1 Expansion Test:
5.1 Material—Thematerialofmanufactureshallbesheetor
9.1.1 When specified in the contract or purchase order,
strip of copper of such quality and soundness as to be suitable
product test specimens from tube furnished in the O60 an-
for processing into welded tube to meet the properties pre-
nealed temper shall be expanded in accordance with Test
scribed herein.
5.2 Manufacture:
TABLE 1 Chemical Requirements
5.2.1 The product shall be manufactured by forming the
material into a tubular shape on a suitable forming mill and Composition, %
Copper or
welded using an automatic process.
Phosphorus Total Other
A
Copper Alloy
Copper, Lead,
Iron Zinc Elements,
5.2.2 The product shall be cold worked to the finished size UNS No.
min Max
Max
and wall thickness and subsequently annealed, when required,
B
C10100 99.99 . . . . . . . . . 0.0003 max . . .
to meet the temper properties specified.
C
C10200 99.95 . . . . .
5.2.3 The product shall conform to “fully finished tube” as
C12000 99.90 . . . . . . . . . 0.004–0.012 . . .
C12200 99.9 . . . . . . . . . 0.015–0.040 . . .
required in 5.2.3.1 and 5.2.3.2:
A
5.2.3.1 Welded tube with internal and external flash re- Silver counting as copper.
B
This value is exclusive of silver and shall be determined as the difference
movedbyscarfing,andthetubesubsequentlycolddrawn,over
between the sum of results for all impurity elements listed in Table 1 of Specifica-
a mandrel and annealed as necessary to conform to the
tion B 170 for Grade 1 and 100 %.
C
specified temper. Oxygen in C10200 shall be 10 ppm max.
B 640 – 00 (2006)
TABLE 2 Mechanical Property Requirements
10.2.1 When specified in the contract or purchase order, a
Copper UNS Nos. C10100, C10200, C12000, and C12200 cleanness test shall be performed by the manufacturer.
Tensile Strength, Min Elongation in 2
10.2.1.1 Testing shall follow the procedures in 16.2.9.
Form Temper in.or50mm,
A B
ksi MPa
10.2.1.2 The maximum amount of residue from the test
Min, %
Coiled lengths O60 30 205 40 sample shall not exceed 0.0035 g/ft of interior surface for
Straight lengths H58 36 250 . . .
tubes as given in Tables 3 and 4.
A
ksi = 1000 psi.
10.3 Purchases for Agencies of the U.S. Government—
B
See Appendix X1.
When specified in the contract or purchase order, product
purchased for agencies of the U.S. government shall conform
to the requirements stipulated in the Supplementary Require-
MethodB153withanexpansionoftheoutsidediameterinthe
ments.
following percentage:
Outside Diameter, Expansion of Outside
11. Dimensions, Mass, and Permissible Variations
in. (mm) Diameter, %
11.1 The standard dimensions, weights per foot, and toler-
⁄8 (15.9) and under 30
ancesforthevariousnominalsizesaregiveninTables5and6.
Over ⁄8 (15.9) 25
11.2 Wall Thickness and Diameter:
9.1.2 The expanded tube shall show no cracking or other
11.2.1 Coil Lengths—Table 5.
defects visible to the unaided eye.
11.2.2 Straight Lengths—Table 6.
9.2 Microscopical Examination—When specified in the
11.3 Length:
contract or purchase order, product test specimens of Copper
11.3.1 The standard length for coils shall be 50 ft (15.2 m).
UNS Nos. C10100, C10200, and C12000 shall be free of
The length tolerances for all coils shall be +12 in. (300 mm)
cuprous oxide as determined by Test Method A of Test
and −0 in.
Methods B577.
11.3.2 The standard length for straight lengths shall be 20 ft
9.3 Hydrogen Embrittlement Susceptibility—When speci-
(6.10 m). The length tolerances for all lengths shall be +1 in.
fiedinthecontractorpurchaseorder,producttestspecimensof
(25 mm) and −0 in.
Copper UNS Nos. C10100, C10200, C12000, and C12200
11.4 Roundness:
shall conform to the requirements of Test Method B of Test
11.4.1 Straight Lengths—For unannealed drawn tube in
Methods B577.
straightlengths,theroundnesstoleranceisspecifiedinTable7.
9.4 Flattening Test:
The deviation from roundness is measured as the difference
9.4.1 When specified in the contract or purchase order, the
between major and minor diameters as determined at any one
producttestspecimensshallbeflattenedinaccordancewiththe
cross section of the tube. Roundness tolerance has not been
test method described in 16.2.6.
established for annealed tube in straight lengths.
9.4.2 The product test specimen shall be free of defects, but
11.4.2 Coil Lengths—Roundness tolerance has not been
blemishes of a nature that do not interfere with the intended
established for tubes furnished in coils.
application are acceptable.
11.5 Squareness of Cut—For tube in straight lengths, the
9.5 Reverse Bend Test—When specified in the contract or
deviation from squareness is measured as the difference be-
purchase order, the product test specimens when flattened and
tweenonesideofacrosssectionoftubefromtheoppositeside
bent in accordance with the test method described in 16.2.7,
A
shall show no evidence of cracks, lack of penetration in the TABLE 3 Interior Surface Residue Limits of Soft Coiled Lengths
B
weld, or overlaps resulting from flash removal visible to the
Wall Thickness, Residue Limit per 50
in. (mm) ft (15.2 m) coil, g
unaided eye which are considered unacceptable for the in-
tended application.
Copper UNS Copper UNS
Standard Size, in.
Nos. C10100, Nos. C10100,
C10200, C10200,
10. Other Requirements
C12000, and C12000, and
C12200 C12200
10.1 Electromagnetic (Eddy-Current) Test:
10.1.1 Eachstraightlengthtube,uptoandincluding3 ⁄8-in.
⁄8 0.030 (0.762) 0.0030
(79.4-mm) outside diameter, shall be passed through an eddy-
⁄16 0.030 (0.762) 0.0058
current testing unit adjusted to provide information on the 1
⁄4 0.030 (0.762) 0.0087
suitability of the tube for the intended application. ⁄16 0.032 (0.813) 0.0114
⁄8 0.032 (0.813) 0.0143
10.1.2 Tubes that do not actuate the signaling device of the
⁄2 0.032 (0.813) 0.0200
eddy current testing unit shall be considered as conforming to
⁄8 0.035 (0.889) 0.0254
⁄4 0.035 (0.889) 0.0312
therequirementsofthetest.Testingshallfollowtheprocedures
⁄4 0.042 (1.07) 0.0305
of Practice E243, except for the determination of “end effect.”
⁄8 0.045 (1.14) 0.0360
10.1.3 Testing of coiled lengths shall be subject to negotia- 1
1 ⁄8 0.050 (1.27) 0.0470
1 ⁄8 0.055 (1.40) 0.0580
tion between the manufacturer and the purchaser.
1 ⁄8 0.060 (1.52) 0.0690
10.1.4 For tubes greater than 3 ⁄8 in. (79.4 mm) in outside
A
See also Table 5.
diameter, the manufacturer and purchaser shall agree on
B 2 2
Residue limit 0.0035-g/ft (0.038-g/m ) inside area. The internal surface area
whatever nondestructive testing is required.
per foot or tube is determined by the equation (3.1416 3 inside diameter 3
10.2 Cleanness Test: 144)/1728.
B 640 – 00 (2006)
A
TABLE 4 Interior Surface Residue Limits of Straight Lengths
13.2.1 Samples for chemical analysis shall be taken in
B
Wall Thickness, in. Residue Limit per 20 accordance with Practice E255. Dril
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