ASTM B68M-99

Standard Specification for Seamless Copper Tube, Bright Annealed [Metric]

SCOPE
1.1 This specification establishes the requirements for bright annealed seamless copper tube suitable for use in refrigeration, oil lines, gasoline lines, etc., where tube with an interior surface essentially free from scale and dirt is required.  
1.1.1 Tubes made from any of the following Copper UNS No. designations may be supplied, unless otherwise specified in the contract or purchase order:  Copper UNS No. 2 Type of Copper C10200 Oxygen-free without residual deoxidants C10300 Oxygen-free, extra low phosphorus C10800 Oxygen-free, low phosphorus C12000 Phosphorus Deoxidized, low residual phosphorus C12200 Phosphorus Deoxidized, high residual phosphorus
1.2 Values stated in SI units are the standard.  
1.3 This specification is the companion to inch-pound Specification B68.  
1.4 The following hazard statement pertains only to the test method described in Sections 20.5 and 21.2.6 of this specification: 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: 09-Sep-1999
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.04 - Pipe and Tube

Relations

• Replaced By: ASTM B68M-99(2005) - Standard Specification for Seamless Copper Tube, Bright Annealed [Metric] (Withdrawn 2011)
• Effective Date: 01-Mar-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 68M – 99
METRIC
Standard Specification for
Seamless Copper Tube, Bright Annealed [Metric]
This standard is issued under the fixed designation B68M; 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.
1. Scope * B577 Test Methods for Detection of Cuprous Oxide (Hy-
drogen Embrittlement Susceptibility) in Copper
1.1 Thisspecificationestablishestherequirementsforbright
B601 Practice for Temper Designations for Copper and
annealedseamlesscoppertubesuitableforuseinrefrigeration,
Copper Alloys—Wrought and Cast
oil lines, gasoline lines, and so forth, where tube with an
E3 Practice for Preparation of Metallographic Specimens
interior surface essentially free from scale and dirt is required.
E8M Test Methods for Tension Testing of Metallic Mate-
1.1.1 Tubes made from any of the following Copper UNS
rials [Metric]
No. designations shall be supplied, unless otherwise specified
E29 Practice for Using Significant Digits in Test Data to
in the contract or purchase order:
Determine Conformance with Specifications
Copper UNS No. Type of Copper
E53 Methods for Chemical Analysis of Copper
C10200 Oxygen-free without residual deoxidants
E62 Test Methods for Chemical Analysis of Copper and
C10300 Oxygen-free, extra low phosphorus
Copper Alloys (Photometric Methods)
C10800 Oxygen-free, low phosphorus
E112 Test Methods for Determining the Average Grain
C12000 Phosphorus deoxidized, low residual phosphorus
C12200 Phosphorus deoxidized, high residual phosphorus
Size
E243 Practice for Electromagnetic (Eddy-Current) Exami-
1.2 Values stated in SI units are the standard.
nation of Copper and Copper-Alloy Tubes
1.3 This specification is the companion to inch-pound
E255 Practice for Sampling Copper and CopperAlloys for
Specification B68.
Determination of Chemical Composition
1.4 The following hazard statement pertains only to the test
E527 Practice for Numbering Metals and Alloys (UNS)
method described in Sections 20.5 and 21.2.6 of this specifi-
cation: This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 bright anneal, n—a thermal treatment carried out in a
priate safety and health practices and determine the applicabil-
controlled atmosphere so that surface oxidation is reduced to a
ity of regulatory limitations prior to use.
minimum and the surface remains relatively bright.
2. Referenced Documents 3.2 Definitions of Terms Specific to This Standard:
3.2.1 unaided eye, n—without visual enhancement; how-
2.1 ASTM Standards:
ever, corrective spectacles necessary to obtain normal vision
B68 Specification for Seamless Copper Tube, Bright An-
shall be permitted.
nealed
3.2.2 capable of—the test need not be performed by the
B153 Test Method for Expansion (Pin Test) of Copper and
producer of the material. However, should subsequent testing
Copper-Alloy Pipe and Tubing
bythepurchaserestablishthatthematerialdoesnotmeetthese
B 251M Specification for General Requirements for
requirements, the material shall be subject to rejection.
Wrought Seamless Copper and Copper-Alloy Tube [Met-
ric]
4. Ordering Information
4.1 Include the following information in order for products.
ThisspecificationisunderthejurisdictionofASTMCommitteeB-5onCopper
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
and Tube. Annual Book of ASTM Standards, Vol 03.01.
Current edition approved Sept. 10, 1999. Published December 1999. Originally Annual Book of ASTM Standards, Vol 14.02.
published as B68M–84. Last previous edition B68M–95. Annual Book of ASTM Standards, Vol 03.05.
2 7
Refer to Practice E527 for explanation of unified numbering system (UNS). Annual Book of ASTM Standards, Vol 03.03.
3 8
Annual Book of ASTM Standards, Vol 02.01. Annual Book of ASTM Standards, Vol 01.01.
*ASummary 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 68M
4.1.1 ASTM designation and year of issue (for example, 8. Grain Size
B68M–95),
8.1 Tube in the tempers O50 (light annealed) and O60 (soft
4.1.2 UNS copper number (for example, C10200),
annealed) shall conform to the requirements of Table 2.
4.1.3 Temper (Section 7),
4.1.4 Dimensions,diameterandwallthickness(Section12), 9. Mechanical Property Requirements
4.1.5 How furnished: straight lengths or coils,
9.1 Tensile Strength:
4.1.6 Total length, or number of pieces, of each size,
9.1.1 Thetubeshallhaveaminimumtensilestrengthof210
4.1.7 Total weight, each size, and
MPA when tested in accordance with Test Methods E8M.
4.1.8 When product is purchased for agencies of the U.S.
9.2 Elongation:
Government.
9.2.1 The tensile elongation of the tube shall be a minimum
4.2 The following options are available and shall be speci-
40%(50-mmgagelength)whentestedinaccordancewithTest
fied at the time of placing the order, when required:
Method E8M.
4.2.1 Electromagnetic (eddy-current) test,
10. Performance Requirements
4.2.2 Embrittlement test,
4.2.3 Expansion test,
10.1 Expansion Test:
4.2.4 Flattening test,
10.1.1 When specified in the contract or purchase order, the
4.2.5 Certification, and
outsidediameterofthetubefurnishedshallbecapableofbeing
4.2.6 Mill test report.
expanded as follows when tested in accordance with Test
Method B153.
5. Materials and Manufacture
Outside Diameter, mm Expansion, %
5.1 Materials:
19 and under 40
5.1.1 The material of manufacture shall be billets, cast bars,
over 19 30
or tube of the Copper UNS No. C10200, C10300, C10800,
10.1.1.1 The expanded tube shall show no cracks or rup-
C12000, or C12200 and shall be of such soundness as to be
tures seen through visual inspection without the use of special
suitable for processing into the tubular products described.
equipment or enhancement excepting the use of corrective
5.2 Manufacture:
lenses.
5.2.1 The tube shall be manufactured by such hot- or
10.1.2 A flattening test is an optional alternative to the
cold-working process as to produce a homogeneous uniform
expansion test for annealed tube over 4 in. in diameter.
wrought structure in the finished product. The tube shall be
10.2 Flattening Test:
cold drawn to the finished size and wall thickness and shall be
10.2.1 When specified in the contract or purchase order, the
bright annealed to meet the specified temper.
tube shall be capable of being flattened in accordance with the
method described in 21.2.6.1 and shall contain no cracks or
6. Chemical Composition
flaws visible to the unaided eye in the flattened section.
6.1 The material shall conform to the requirements pre-
11. Microscopical Examination
scribed in Table 1 for the specified copper.
6.2 These specification limits do not preclude the presence 11.1 Samples of Copper UNS Nos. C10200, C10300, and
of other elements. It is not prohibited to establish limits for C12000 shall be free of cuprous oxide as determined by
unnamed elements and to require analysis by agreement ProcedureAof Test Methods B577. When Copper UNS Nos.
between the manufacturer or supplier and the purchaser. C10800 or C12200 are supplied, examination is not required.
In case of a dispute, a referee method shall be used in
accordance with Procedure C of Test Methods B577.
7. Temper
7.1 The tube shall be furnished in either of two annealed
12. Hydrogen Embrittlement
tempers as follows:
12.1 Samples of Copper UNS Nos. C10200, C12000, and
O (Annealed) Temper Designation
C12200 shall be capable of passing the embrittlement test of
O50 (light annealed)
ProcedureBofTestMethodsB577.Theactualperformanceof
O60 (soft annealed)
this test is not mandatory under the terms of this specification
7.1.1 Tempers are defined in Practice B601. unless definitely specified in the ordering information. In case
TABLE 1 Chemical Requirements
Composition,%
Element Copper UNS No.
A
C10200 C10300 C10800 C12000 C12200
B
Copper, min 99.95 . . 99.90 99.9
B
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.
B 68M
TABLE 2 Average Grain Size Requirements TABLE 4 Coil Schedule of Mill Lengths with Ends
Temper Grain Size, mm Shortest Maximum
O50 0.015 to 0.040 Tube Outside Nominal Length, Permissible Permissible
O60 0.040, min Diameter, mm mm Length, % of Weights of Ends,
Nominal Length % of Lot Weight
A
Up to 25, incl up to 30 000, incl 70 10
A
Over 25 to 50, incl up to 30 000, incl 60 20
B
Up to 25, incl over 30 000 to 50 50
ofadispute,arefereemethodshallbeemployedinaccordance
60 000, incl
with Procedure C of Test Methods B577.
A
Expressed to the nearest 300 mm.
B
Short pieces shall, at the option of the supplier, be included as follows: up to
13. Nondestructive Testing 10 % of lot weight between 15 mm and one quarter of full length and up to 40 %
between one quarter and full length.
13.1 Upon agreement between the manufacturer and the
purchaser, each tube up to 79 mm in outside diameter shall be
TABLE 5 Coil Length Tolerances (Mill Lengths)
subjected to electromagnetic (eddy-current) examination. For
(Applicable to only full-length pieces)
this test, the tube shall be examined in the final drawn or
Tolerances, %, for Nominal Lengths, mm
Tube Outside
annealed temper, before coiling or in straight lengths before
Over 30 000 to
Diameter, mm Up to 30 000, incl
600 000, incl
final anneal.
A A
Up to 25, incl 5 or 600 mm, whichever is 10
13.2 Electromagnetic (Eddy-Current) Test:
greater
A
13.2.1 When tested in accordance with Practice E243,
Over 25 to 50, 5 or 600 mm, whichever is No tolerances established
incl greater
tubesthatdonotactuatethesignalingdeviceofthetestingunit
A
shall be considered as conforming to the requirements of the Expressed to the nearest 300 mm.
examination.
17. General Requirements
14. Purchases for U.S. GovernmentAgencies
17.1 The following sections of Specification B251M are a
14.1 When the contract or purchase order stipulates the
part of this specification.
purchase is for an agency of the U.S. Government, the tubes
17.1.1 Terminology, General,
furnished shall conform to the conditions specified in the
17.1.2 Material and Manufacture,
Supplementary Requirements of Specification B251M.
17.1.3 Workmanship, Finish, and Appearance,
17.1.4 Significance of Nu
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