ASTM B743-00

Standard Specification for Seamless Copper Tube in Coils

SCOPE
1.1 This specification covers seamless copper tube in coils, suitable for use in refrigeration and air conditioning or such other uses as oil lines, gasoline lines, etc.  
1.2 The tube will normally be made of the following coppers and unless otherwise specified, tubes made from any one of these coppers may be supplied:  Copper Alloy Previously Used UNS No. 2 Designation Type of Copper C10200 OF Oxygen-free without residual deoxidants A C10300 ... Oxygen-free, extra low phosphorus A C10800 ... Oxygen-free, low phosphorus A C12000 DLP Phosphorized, low residual phosphorus C12200 DHP Phosphorized, high residual phosphorus A See Classification B 224.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Mar-2000
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.04 - Pipe and Tube

Relations

• Replaced By: ASTM B743-06 - Standard Specification for Seamless Copper Tube in Coils
• Effective Date: 01-Oct-2006
• Referred By: ASTM B251/B251M-17 - Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube
• Effective Date: 10-Mar-2000

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 743 – 00
Standard Specification for
Seamless Copper Tube in Coils
This standard is issued under the fixed designation B 743; the number immediately following the designation indicates the year of
original adoption or, in the case of 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.
1. Scope * B 193 Test Method for Resistivity of Electrical Conductor
Materials
1.1 Thisspecificationestablishestherequirementsforseam-
B 224 Classification of Coppers
lesscoppertubeincoils,suitableforuseinrefrigerationandair
B 251 Specification for General Requirements for Wrought
conditioning or other uses, such as oil lines, gasoline lines, and
Seamless Copper and Copper-Alloy Tube
so forth.
B 577 Test Methods for Detection of Cuprous Oxide (Hy-
1.2 Units—The values stated in inch-pound units are stan-
drogen Embrittlement Susceptibility) in Copper
dard. The values given in parentheses are mathematical con-
B 601 Practice for Temper Designations for Copper and
versions to SI units, which are provided for information only
Copper Alloys—Wrought and Cast
and are not considered standard.
E 2 Methods of Preparation of Micrographs of Metals and
1.3 The tube shall be produced of the following coppers.
Alloys (Including Recommended Practice for Photography
Unless otherwise specified, tubes made from any one of these
as Applied to Metallography)
coppers may be supplied:
E 3 Practice for Preparation of Metallographic Specimens
Copper Alloy Previously Used
E 8 Test Methods of Tension Testing of Metallic Materials
UNS No. Designation Type of Copper
E 18 Test Methods for Rockwell Hardness and Rockwell
A
C10200 OF Oxygen-free without residual deoxidants
Superficial Hardness of Metallic Materials
A
C10300 . Oxygen-free, extra low phosphorus
A
C10800 . Oxygen-free, low phosphorus E 29 Practice for Using Significant Digits in Test Data to
C12000 DLP Phosphorized, low residual phosphorus
Determine Conformance with Specifications
C12200 DHP Phosphorized, high residual phosphorus
E 53 Test Methods for Determination of Copper in Unal-
A
See Classification B 224.
loyed Copper by Gravimetry
1.4 The values stated in inch-pound units are to be regarded
E 62 Test Methods for Chemical Analysis of Copper and
as the standard. The SI values given in parentheses are
Copper Alloys (Photometric Methods)
provided for information only.
E 112 Test Methods for Determining Average Grain Size
1.5 The following safety hazards caveat pertains to the test
E 243 Practice for Electromagnetic (Eddy-Current) Exami-
method portion, Section 19, of this specification. This standard
nation of Copper and Copper-Alloy Tubes
does not purport to address all of the safety concerns, if any,
E 255 Practice for Sampling Copper and CopperAlloys for
associated with its use. It is the responsibility of the user of this
Determination of Chemical Composition
standard to establish appropriate safety and health practices
E 846 Terminology for Copper and Copper Alloys
and determine the applicability of regulatory limitations prior
to use.
3. General Requirements
3.1 The following sections of Specification B 251 constitute
2. Referenced Documents
a part of this specification:
2.1 ASTM Standards:
3.1.1 Sampling,
B 153 Test Method for Expansion (Pin Test) of Copper and
3.1.2 Number of tests and retests,
Copper-Alloy Pipe and Tubing
3.1.3 Dimensions and permissible variations,
B 170 Specification for Oxygen-Free Electrolytic Copper—
3.1.4 Test specimens, and
Refinery Shapes
Annual Book of ASTM Standards, Vol 02.03.
1 4
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper Discontinued. See 1982 Annual Book of ASTM Standards, Vol 03.01.
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe Annual Book of ASTM Standards, Vol 14.02.
and Tube. Annual Book of ASTM Standards, Vol 03.01.
Current edition approved March 10, 2000. Published May 2000. Originally Annual Book of ASTM Standards, Vol 03.05.
published as B 743 – 85. Last previous edition B 743 – 95. Annual Book of ASTM Standards, Vol 03.03.
2 9
Annual Book of ASTM Standards, Vol 02.01. Annual Book of ASTM Standards, Vol 14.04.
*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.
B743–00
3.1.5 Significance of numerical limits. 5.2.4 Eddy-current test (see 13.1.1),
3.2 In addition, when a section with a title identical to those 5.2.5 Expansion test (see 12.1.1),
referenced in 2.1 appears in this specification, it contains 5.2.6 Electrical resistivity requirement (see 10.1),
additional information which supplements those appearing in 5.2.7 Certification (see Section 23),
Specification B 251. In case of conflict, this specification shall 5.2.8 Mill test report.
prevail.
6. Materials and Manufacture
4. Terminology
6.1 Material:
4.1 Definitions—For the definitions of terms related to
6.1.1 The material of manufacture shall be cast billet, bar,
copper and copper alloys, refer to Terminology B 846.
tube, and so forth of Copper Alloys Nos. C10200, C10300,
4.1.1 coil, n—length of the product wound into a series of
C10800, C12000, or C12200 and of such purity and soundness
connected turns. The unqualified term“ coil” as applied to tube
as to be suitable for processing in to the product prescribed
usually refers to a bunched coil.
herein.
4.1.1.1 bunched, adj—coil in which the turns are bunched
6.2 Manufacture:
and held together such that the cross section of the bunched
6.2.1 The tube shall be manufactured by such hot and cold
turns is approximately circular.
working processes needed to produce a homogenous, uniform
4.1.1.2 level or traverse wound, adj—coilinwhichtheturns
wrought structure in the finished product.
are wound into layers parallel to the axis of the coil such that
6.2.1.1 It shall be cold-drawn to the finish size and wall
successive turns in a given layer are next to one another
thickness.
(sometimes called “helical coil”).
6.2.1.2 When the cold-drawn temper is required, the final
4.1.1.3 single layer flat, adj—coil in which the product is
drawing operation shall be such as to meet the specified
spirally wound into a single disk-like layer (sometimes called
temper.
“pan-cake coil” or “single layer spirally wound coil”).
6.2.1.3 When the annealed temper is required, the tube shall
4.1.1.4 double layer flat, adj—coil in which the product is
be annealed after the final cold draw.
spirally wound into two connected disk-like layers such that
onelayerisontopoftheother(sometimescalled“doublelayer
7. Chemical Composition
pan-cake coil” or “double layer spirally wound coil”).
7.1 Thematerialshallconformtothecompositionalrequire-
4.2 Definitions of Terms Specific to This Standard:
ments listed in Table 1 for the copper specified in the ordering
4.2.1 unaided eye, n—visual inspection, without the use of
information.
special equipment or enhancement excepting the use of cor-
rective lenses.
8. Temper
8.1 H (Drawn) Temper—The temper of drawn tube shall be
5. Ordering Information
designated as H58 (drawn, general purpose).
5.1 Orders for materials under this specification shall in-
8.2 O (Annealed) Temper—The temper of annealed tube
clude the following information:
shall be designated as 050 (light anneal) and 060 (soft anneal)
5.1.1 ASTM designation and year of issue,
(see Table 2). Tempers are defined in Practice B 601.
5.1.2 Copper UNS No. (for example, C12200), if required
(see 1.4 and 7.1),
9. Grain Size of Annealed Tempers
5.1.3 Temper (see Section 8).
9.1 Samples of annealed temper tubes shall be examined at
5.1.4 Dimensions, diameter, and wall thickness. Dimen-
a magnification of 75 diameters.The microstructure shall show
sional tolerances, if other than those included in this specifi-
complete recrystallization and shall have an average grain size
cation, are required,
within the limits specified in Table 3, when tested in accor-
5.1.5 Length (see 16.1),
dance with Test Method E 112.
5.1.6 Type of coil (see 4.1),
5.1.7 Total quantity of each item,
10. Physical Property Requirements
5.2 The following options are available and shall be speci-
fied at the time of placing the order, when required: 10.1 Electrical Resistivity—When specified in the contract
5.2.1 Embrittlement test (see 13.3.1), or purchase-order, tube ordered for electrical conductor appli-
5.2.2 Refrigeration or air-conditioning grade (see 17.3), cation produced from Copper UNS No. C10200, C10300, or
5.2.3 If coil ends are to be sealed (see 13.4.1.1), C12000 shall have an electrical mass resistivity, V.g/m , not to
TABLE 1 Chemical Requirements
Composition, %
Element Copper Alloy UNS No.
A
C10200 C10300 C10800 C12000 C12200
B
Copper, min 99.95 . . 99.90 99.9
Copper + phosphorus, min . 99.95 99.95 . .
Phosphorus . 0.001–0.005 0.005–0.012 0.004–0.012 0.015–0.040
A
Oxygen in C10200 shall be 10 ppm max.
B
Silver counting as copper.
B743–00
TABLE 2 Mechanical Property Requirements of Drawn-Temper and Annealed-Temper Tube
Rockwell Hardness
B
Wall Thickness, Tensile Strength Min, Yield Strength Min, Elongation in 2 in.,
Temper Designation Scale Value
A A
in. (mm) ksi (Mpa) ksi (Mpa) min %
H58 Less than 0.020 N/A N/A 36 (250) 30 (205) N/A
C
0.020 and over 30T 30 min 36 (250) 30 (205) N/A
O50 Less than 0.015 N/A N/A 30 (205) 9 (62) 40
C
0.015 to 0.035 15T 65 max 30 (205) 9 (62) 40
(0.381 to 0.889)
C
Over .035 F 55 max 30 (205) 9 (62) 40
(0.889)
O60 Less than 0.015 N/A N/A 30 (205) 6 (40) 40
C
0.015 to 0.035 15T 60 max 30 (205) 6 (40) 40
(0.381 to 0.889)
C
Over 0.35 F 50 max 30 (205) 6 (40) 40
(0.889)
A
ksi = 1000 psi.
B
Yield strength to be determined at 0.5 % extension under load.
C 5
Rockwell hardness values apply to tubes having an inside diameter of ⁄16 in. (7.92 mm) or over, and Rockwell hardness test shall be made on the inside surface of
thetube.WhensuitableequipmentisnotavailablefordeterminingthespecificRockwellhardness,otherRockwellscalesandvaluesmaybespecifiedsubjecttoagreement
between the purchaser and supplier.
TABLE 3 Grain Size of Annealed Tempers
13. Other Requirements
Temper Average Grain Size, mm
13.1 Nondestructive Examination for Defects:
O60 0.040 min
O50 0.040 max 13.1.1 Upon agreement between the manufacturer and the
purchaser, each tube shall be subjected to an eddy-current test.
13.1.2 Tubes shall be tested normally in the drawn temper;
however, they may be tested in the annealed temper at the
exceedthelimitsinTable4forthespecifiedcopperandtemper
option of the manufacturer.
when tested in accordance with Test Method B 193.
13.1.3 Testing shall follow the procedures of Practice E 243
except for the determination of “end effect.”
11. Mechanical Property Requirements
11.1 Tensile and Yield Strength—The product shall conform
NOTE 1—End effect is that length of the tube, which travels through the
to the requirements in Table 2 for the specified temper. coil until the testing unit, has stabilized and is able to detect flaws. The
magnitude of the spike, generated when an end passes through the test
11.2 Rockwell Hardness:
coils is such that it disrupts testing momentarily.
11.2.1 For product of the H58 temper and Rockwell hard-
ness values are given for reference purposes only.
13.1.4 Unless otherwise agreed upon between the manufac-
11.2.2 For product of the O (annealed) temper, the product
turer, or supplier, and the purchaser, the manufacturer shall
shall conform to the Rockwell hardness values contained in
have the option of calibrating the test equipment using either
Table 2.
notches or drilled holes. If agreement cannot be reached,
drilled holes shall be used.
12. Performance Requirements
13.1.4.1 Notch-depthstandardsroundedtothenearest0.001
12.1 Expansion Requirement:
in. (0.025 mm) shall be 22 % of the nominal bottom-wall
12.1.1 When specified in the contract or purchase order,
thickness.
specimens of the annealed product shall be capable of being
13.1.4.2 Drilled-hole standards shall be 0.025 in. (0.635
expanded in accordance with Test Method B 153 with an 3
mm) diameter for tubes up to and including ⁄4 in. (19.05 mm)
expansion of the outside diameter in the following percentage:
specified diameter and 0.31 in. (0.785 mm) diameter for tubes
Outside Diameter, Expansion of Outside
over ⁄4 in. (19.05 mm) specified diameter.
in. (mm) Diameter, %
13.1.5 Tubes that do not actuate the signaling device on the
0.750 (19.1) and under 40
eddy-currenttestershallbeconsideredinconformancewiththe
Over 0.750 (19.1) 30
requirements of this test.
12.1.2 The expanded tube shall show no cracking or rupture
13.1.6 Tubes, rejected for irrelevant signals because of
visible to the unaided eye.
moisture, soil, and like effects, may be reconditioned and
retested.
13.1.7 Tubesthatarereconditionedandretested(see13.1.6)
TABLE 4 Copper UNS No.
shall be considered in conformance with the requirements of
NOTE 1—Refer to Appendix X1 for the International Annealed Copper
this specification, if they do not cause output signals beyond
Standard (IACS) electrical conductivity equivalents.
the acceptable limits.
Temper C10200 C10300 C12000
13.1.8 Eddy-current discontinuities will be identified on
O50, O60 0.153 28 0.156 14 0.170 31
coils in excess of 200 ft (61 m) in length for subsequent
H58 0.15737 0.159 40 0.174 18
removal by the purchaser.
B743–00
13.1.9 At the customer’s discretion, the permissible number (0.025 mm) shall be 22 % of the nominal wall thickness.
of identified eddy current discontinuities may be specified. Drilled hole standards shall be 0.025 in. (0.635 mm) diameter
13.2 Cuprous Oxide Requirement—Samples of Copper for tubes up to and including ⁄4-in. specified diameter. Alter-
UNS No. C10200, C10300, and C12000 shall be significantly natively, when a manufacturer uses speed insensitive equip-
free of cuprous oxide as determined by Procedure A of Test ment that can select a maximum unbalance signal, a maximum
Methods B 577. In case of dispute, a referee method in unbalance signal of 0.3 % may be used.
accordance with Procedure C shall be used. 15.4 Unless otherwise specified, eddy-current discontinui-
13.3 Embrittlement—Samples of Copper UNS Nos. ties, as detected, will be identified on coils in excess of 200 ft
C10200, C10300, C10800, C12000, and C12200 shall be (6096 cm) in length for subsequent removal by the purchaser.
capable of passing the embrittlement test of Procedure B of 15.5 At the customer’s discretion, the permissible number
Test Methods B 577. The actual performance of this test is not of identified eddy-c
...