ASTM B306-20

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B306 − 13 B306 − 20
Standard Specification for
Copper Drainage Tube (DWV)
This standard is issued under the fixed designation B306; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishes the requirements for seamless copper tube (DWV) produced from Copper UNS No. C12200
and intended for sanitary drainage, waste, and vent piping.
NOTE 1—Fittings used for soldered or brazed connections in drainage, waste, or vent systems are described in ASME Standards B16.23 and B16.29
and CSA Standard B158.1.
NOTE 2—The assembly of copper drainage, waste, and vent systems by soldering is described in Practice B828.
NOTE 3—Solders for joining copper drainage, waste, or vent systems are described in Specification B32. The requirement for acceptable fluxes for these
systems are described in Specification B813.
1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are
mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 The following hazard statement pertains only to the test method described in Section 16.2.3 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.
1.3 The following hazard statement pertains only to the test method(s) described in this specification:
1.3.1 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
B32 Specification for Solder Metal
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B813 Specification for Liquid and Paste Fluxes for Soldering of Copper and Copper Alloy Tube
B828 Practice for Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings
B846 Terminology for Copper and Copper Alloys
B900 Practice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government Agencies
E8E8/E8M Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E243 Practice for Electromagnetic (Eddy Current) Examination of Copper and Copper-Alloy Tubes
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipe and
Tube.
Current edition approved April 1, 2013June 1, 2020. Published April 2013July 2020. Originally approved in 1956. Last previous edition approved in 20092013 as
B306 – 09.B306 – 13. DOI: 10.1520/B0306-13.10.1520/B0306-20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
*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
B306 − 20
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2 ASME Standards:
B16.23 Cast Copper Alloy Solder Joint Drainage Fittings—DWV
B16.29 Wrought Copper and Copper Alloy Solder Joint Drainage Fittings—DWV
ASME Boiler and Pressure Vessel Code
2.3 CSA Standards:Standard:
B158.1 Cast Brass Solder Joints Drainage, Waste, and Vent Fittings
3. Terminology
3.1 Definitions:
3.1.1 tube, DWV, n—seamless copper tube intended for sanitary drainage, waste, and vent piping and other nonpressure
applications and conforming to the particular dimensions for tube commonly known as copper drainage tube.
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:
3.2.1 capable of—the test need not be performed by the producer of the material. However, if subsequent testing by the
purchaser establishes that the material does not meet these requirements, the material shall be subject to rejection.
4. Ordering Information
4.1 Include this information for contracts or purchase orders for products furnished to this specification.the following specified
choices when placing orders for product under this specification, as applicable:
4.1.1 ASTM designation and year of issue (for example, B306 – 02),);
4.1.2 Copper UNS No. or other internationally recognized copper designation;
4.1.3 Temper;
4.1.4 Dimensions (Section 11 and Table 1),);
4.1.5 Total length, each size,Quantity—total weight or total length or number of pieces of each size; and
4.1.6 When product is purchased for agencies of the U.S. Government.Intended application.
4.2 The following options are available and shall be specified in the contract or purchase order but may not be included unless
specified at the time of placing of the order, when required:
4.2.1 Heat identification or traceability,
4.2.2 Tensile Test (Section 8.1)),
4.2.2 Electromagnetic (eddy-current) test (Section 9.2),
4.2.3 Pneumatic test (Section 9.3),
4.2.4 Certification (Section 20),
4.2.5 Test report (Section 21).),
4.2.6 When product is purchased for agencies of the U.S. government, and
4.2.7 Rockwell Hardness.
TABLE 1 Standard Dimensions, Weights, and Tolerances for Diameter and Wall Thickness
NOTE 1—All tolerances in this table are plus and minus except where otherwise noted.
Nominal or Standard Drainage
Tolerance in Average
Wall Thickness, in. (mm)
Outside Diameter, Theoretical Weight,
A
Tube Size, Outside Diameter,
in. (mm) lb/ft (kg/m)
in. (mm) Actual Tolerance
in.
1 ⁄4 1.375 (34.9) 0.0015 (0.038) 0.040 (1.02) 0.003 (0.076) 0.650 (0.967)
1 ⁄2 1.625 (41.3) 0.002 (0.051) 0.042 (1.07) 0.003 (0.076) 0.809 (1.20)
2 2.125 (54.0) 0.002 (0.051) 0.042 (1.07) 0.004 (0.10) 1.07 (1.59)
3 3.125 (79.4) 0.002 (0.051) 0.045 (1.14) 0.004 (0.10) 1.69 (2.51)
4 4.125 (105) 0.002 (0.051) 0.058 (1.47) 0.007 (0.18) 2.87 (4.27)
5 5.125 (130) 0.002 (0.051) 0.072 (1.83) 0.008 (0.20) 4.43 (6.59)
6 6.125 (156) 0.002 (0.051) 0.083 (2.11) 0.008 (0.20) 6.10 (9.08)
8 8.125 (206) +0.002 (0.051) 0.109 (2.77) 0.011 (0.28) 10.6 (15.8)
−0.004 (0.10)
A
The average outside diameter is the average, at any one cross section, of the maximum and minimum measured diameters (usually at or very close to 90° to each other).
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, ThreeTwo Park Ave., New York, NY 10016-5990,
http://www.asme.org.
Available from Canadian Standards Association (CSA), 5060 Spectrum Way, Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.178 Rexdale Blvd., Toronto, ON
M9W 1R3, Canada, http://www.csagroup.org.
B306 − 20
5. Material and Manufacture
5.1 Materials:
5.1.1 The material of manufacture shall be billets, a form (billets, bars, or tubetube) of the Copper UNS No. C12200 and shall
be of such purity and soundness as to be suitable for processing into the tubular products described. prescribed herein.
5.2 Manufacture:
5.2.1 The tubeproduct shall be manufactured by such hot- or cold-working hot working or cold working processes as to produce
a homogeneous uniform wrought structure in the finished product. The tube shall be cold drawn to the finished size and wall
thickness.
NOTE 4—Tubes are normally joined with soldered fittings.
5.2.2 The product shall be hot or cold worked to the finished size, and subsequently annealed, when required, to meet the temper
properties specified.
NOTE 4—Tubes are normally joined with soldered fittings.
6. Chemical Composition
6.1 The material shall conform to the following requirements listed in Table 2 for UNS No. C12200:C12200
Copper; incl silver, % 99.9
Phosphorous, % 0.015–0.040
specified in the ordering information.
6.1.1 Results of the analysis on a product sample shall conform to the composition requirements within the permitted analytical
variance specified in Table 2.
6.1.2 These specificationcomposition limits do not preclude the presence of other elements. When included in the contract or
purchase order, and agreed upon by the manufacturer or supplier and the purchaser, limits shallBy agreement between the
manufacturer and purchaser, limits may be established and analysis required for unnamed elements.
7. Temper
7.1 Tube shall be furnished in the H58 temper as defined in standard Classification temper.B601.
8. Mechanical Property Requirements
8.1 Tensile Strength: Strength Requirements:
8.1.1 The tubes shall have a minimum tensile strength of 36Products furnished under this specification shall conform to the
tensile requirements prescribed in Table 3ksi (248 MPa) , when tested in accordance with Test Methods E8E8/E8M.
8.1.2 Tensile tests need not be performed except when specified in the contract or purchase order.
8.1.3 Acceptance or rejection based upon mechanical properties shall depend on tensile strength.
8.2 Rockwell Hardness:
8.2.1 The Rockwell hardness test, Test Methodsvalues given in E18Table 3, is a quick and convenient method of checking for
general conformity to the tensile strength requirement. For general are for general information and assistance in testing, the
approximate minimum hardness value is 30 as measured on the 30-T scale.testing and shall not be used as a basis for product
rejection.
8.2.2 By agreement between the manufacturer and the purchaser, and when specified in the contract or purchase order, the
product shall conform to the Rockwell hardness requirement prescribed in Table 3, when tested in accordance with Test Methods
E18.
9. Nondestructive Testing
9.1 The tubes furnished shall be capable of conforming with the test requirements of any one of the following tests.
9.2 Electromagnetic (Eddy-Current) Test:
9.2.1 Each tube up to and including 3 ⁄8-in. (79.4-mm) in. (79.4 mm) outside diameter shall be subjected to examination and
the testing shall follow the procedures of Practice examination.E243.
9.2.1.1 Tubes that do not actuate the signaling device, after it has device on the testing unit, after having been adjusted to detect
discontinuities that would be unacceptable for this application, shall have met provide information on the suitability of the tube
for the intended application, shall conform to the requirements of this test. Testing shall be in accordance with Practice E243.
9.2.2 This test is not required unless specified in the contract or purchase order.
TABLE 2 Chemical Composition – Wt %
Copper; incl silver, % (min) 99.9
Phosphorous, % 0.015–0.040
B306 − 20
TABLE 3 Mechanical Property Requirements
Mechanical Properties
Tensile Strength, (min) Rockwell Hardness,
ksi (MPa) Superficial 30-T min
36 (250) 30
9.3 Pneumatic Test:
9.3.1 Each tube shall withstand a minimum internal air pressure of 60 psi (400 kPa) for 5 s without leakage.
9.3.2 This test is not required unless specified in the contract or purchase order.
10. Purchases for U.S. Government Agencies
10.1 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 Requirements.
11. Dimensions, Mass, and Permissible Variations
11.1 General—For the purpose of determining conformance with the dimensional requirements given in this specification, any
measured value outside the specified limiting values for any dimension is subject to rejection at the option of the purchaser.
11.2 Weights—Theoretical weights for the nominal or standard dimensions given in Table 1 are for information only. Actual
weights will vary in accordance with the dimensional tolerances given in the table.
11.2 Wall Thickness and Diameter Tolerances—Wall thickness and diameter tolerances shall be in accordance with Table 1.
11.3 Roundness Tolerance—The difference between the major and minor outside diameters as determined at any one cross
section of the tube shall not exceed 1 ⁄2 %, expressed to the nearest 0.001 in. (0.025 mm), of the outside diameter of the tube.
11.4 Lengths and Tolerances:
11.4.1 Standard Length and Tolerances—The standard length of the material shall be 20 ft (6.10 m). The length tolerance shall
be plus 1 in. (25 mm), minus 0 in.
11.4.2 Tubes supplied in other than standard lengths and tolerances shall be in accordance with requirements established by
agreement between the manufacturer or supplier and the purchaser.
11.5 Squareness of Cut—The departure from squareness of the end of any tube shall not exceed 0.016 in./in. (0.016 mm/mm)
of diameter.
12. Workmanship, Finish, and Appearance
12.1 The product shall be free of defects, but blemishes of a nature that do not interfere with the intended application are
acceptable.
13. Sampling
13.1 Lot size, portion size, and selection of sample pieces shall be as follows:
13.1.1 Lot Size—An inspection lot shall be 10 000 lbslb (5000 kg) or fraction thereof.
13.1.2 Portion Size—The number of pieces selected to be representative of the lot shall be as indicated in the following
schedule:
Number of Pieces in Lot Number of Pieces to be Selected
1 to 50 1
1 to 50 1
51 to 200 2
201 to 1500 3
Over 1500 2 % of total number of pieces in lot
but not more than 10 samples
13.2 Chemical Composition:
13.2.1 The sample shall be taken in approximately equal weight from each portion piece selected in 13.1.2 and in accordance
with Practice E255. The minimum weight of the composite shall be 150 g.
13.2.2 Instead of sampling in accordance with Practice E255, the manufacturer shall have the option of sampling at the time
casting are poured or from the semifinished product.
13.2.3 The number of samples taken during the course of manufacture shall be as follows:
13.2.3.1 When samples are taken at the time the castings are poured, at least one sample shall be taken for each group of castings
poured simultaneously from the same source of molten metal.
13.2.3.2 When samples are taken from the semifinished product, a sample shall be taken to represent each 10 000 lbslb (5000
kg) or fraction thereof, except that not more than one sample per piece shall be required.
B306 − 20
13.2.4 When the material composition has been determined during the course of manufacture, sampling of the finished product
by the manufacturer is not required.
13.3 Other Tests:
13.3.1 Specimens for all other tests shall be taken from two of the sample pieces taken in 13.1.2. In the event only one sample
piece is required, all specimens shall be taken from the piece selected.
14. Number of Tests and Retests
14.1 Tests:
14.1.1 Chemical Analysis—Chemical Compositioncomposition shall be determined as the average of in accordance with the
element mean of the results from at least two replicate determinations for each specified element with a limiting value.analyses
of the sample(s).
14.1.2 Tensile Strength—The test results shall be reported as the average of results obtained from two test specimens taken from
each of the samples pieces selected in 13.1.2 and each test specimen must conform to specification requirements.
14.1.2.1 In the event only one piece was selected for test, both test specimens shall be taken from the piece selected.
14.2 Retests:
14.2.1 When requested by the manufacturer or supplier, he shall have the option to perform a retest when the test resultsa retest
shall be permitted when results of tests obtained by the purchaser fail to conform with the product specification requirement(s).to
the requirements of the product specification.
14.2.2 Retesting The retest shall be as directed in this specification the product specifications for the initial test except for the
number of test specimens which shall be twice that normally required for the te
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