ASTM B944-06

Standard Specification for Copper-Beryllium Welded Heat Exchanger and Condenser Tube (UNS No. C17510)

SCOPE
1.1 This specification establishes the requirements for copper-beryllium alloy UNS No. C17510 welded tube in straight lengths.
1.2 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: 31-Jan-2006
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.04 - Pipe and Tube

Relations

• Replaced By: ASTM B944-06(2011) - Standard Specification for Copper-Beryllium Welded Heat Exchanger and Condenser Tube (UNS No. C17510)
• Effective Date: 01-Jan-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B944 – 06
Standard Specification for
Copper-Beryllium Welded Heat Exchanger and Condenser
Tube (UNS No. C17510)
This standard is issued under the fixed designation B944; 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.
1. Scope E255 Practice for Sampling Copper and Copper Alloys for
the Determination of Chemical Composition
1.1 This specification establishes the requirements for
E1004 Test Method for Determining Electrical Conductiv-
copper-beryllium alloy UNS No. C17510 welded tube in
ity Using the Electromagnetic (Eddy-Current) Method
straight lengths.
1.2 Units—The values stated in inch-pound units are to be
3. Terminology
regarded as standard. The values given in parentheses are
3.1 For definitions of terms related to copper and copper
mathematical conversions to SI units, which are provided for
alloys, refer to Terminology B846.
information only and are not considered standard.
1.3 This standard does not purport to address all of the
4. Ordering Information
safety concerns, if any, associated with its use. It is the
4.1 Include the following information when placing orders
responsibility of the user of this standard to establish appro-
for product under this specification, as applicable:
priate safety and health practices and determine the applica-
4.1.1 ASTM designation and year of issue,
bility of regulatory limitations prior to use.
4.1.2 Copper Alloy UNS No. designation,
2. Referenced Documents 4.1.3 Temper (Section 7),
2 4.1.4 Dimensions, diameter, and wall thickness (Section
2.1 ASTM Standards:
12). For tube or pipe, specify either OD/wall, ID/wall, or
B153 Test Method for Expansion (Pin Test) of Copper and
OD/ID,
Copper-Alloy Pipe and Tubing
4.1.5 Minimum wall thickness or average (nominal) wall
B194 Specification for Copper-Beryllium Alloy Plate,
thickness,
Sheet, Strip, and Rolled Bar
4.1.6 Tube length, specific or random, and
B601 Classification for Temper Designations for Copper
4.1.7 Quantity—Total weight or total length or number of
and Copper Alloys—Wrought and Cast
pieces of each size.
B846 Terminology for Copper and Copper Alloys
4.2 The following options are available and should be
E8 Test Methods for Tension Testing of Metallic Materials
specified at the time of placing of the order when required:
E18 Test Methods for Rockwell Hardness of Metallic Ma-
4.2.1 Hydrostatic test,
terials
4.2.2 Pneumatic test,
E29 Practice for Using Significant Digits in Test Data to
4.2.3 Weld bead conditioning, and
Determine Conformance with Specifications
4.2.4 Certification.
E243 Practice for Electromagnetic (Eddy-Current) Exami-
nation of Copper and Copper-Alloy Tubes
5. Materials and Manufacture
5.1 Materials—The material of manufacture shall be sheet
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
or strip of UNS Alloy No. C17510 of such purity and
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
soundness to be suitable for processing into the products
and Tube.
prescribed herein.
Current edition approved Feb. 1, 2006. Published February 2006. DOI: 10.1520/
B0944-06. 5.2 Manufacture—The product shall be manufactured from
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cold rolled strip which is subsequently formed and welded by
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
an automatic welding process without the addition of filler
Standards volume information, refer to the standard’s Document Summary page on
metal.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B944 – 06
6. Chemical Composition shall be interpreted as follows: A micrometer caliper set at
three times the wall thickness shall pass over the tube freely
6.1 Material shall conform to the chemical composition
throughout the flattened part except at the points where the
requirements in Table 1 for Copper Alloy UNS No. C17510.
change in element of flattening takes place. The flattened
6.2 These composition limits do not preclude the presence
elements shall not show cracking or rupture visible to the
ofotherelements.Byagreementbetweenthemanufacturerand
unaided eye. The weld when visible or identifiable shall be
purchaser, limits may be established and analysis required for
placed in the position of maximum bend on one half of the
unnamed elements.
flattened elements.
6.3 For alloys in which copper is listed as “Remainder,”
10.3 Reverse Bend Test Requirements—A section 4 in. in
copper is the difference between the sum of results of all
lengthshallbesplitlongitudinally90°oneachsideoftheweld.
elements determined and 100 %. When all elements in Table 1
The sample shall then be opened and bent around a mandrel
are determined, the sum of results shall be 99.5 % min.
with a diameter four times the wall thickness, with the mandrel
7. Temper
parallel to the weld and on the outside of the tube. The weld
when visible or identifiable shall be at the point of maximum
7.1 The standard temper for products described in this
bend. There shall be no evidence of cracks, or lack of
specification is TF00 (precipitation hardened) as defined in
penetration in the weld.
Classification B601.
8. Physical Property Requirements
11. Other Requirements
8.1 Electrical Conductivity—Product furnished to this
11.1 Each tube shall be subjected to an eddy-current test.
specification shall conform to the electrical conductivity re-
The purchaser may specify either of the tests in 11.2 or 11.3 as
quirement given in Table 2, when tested in accordance with
an alternative to the eddy-current test.
Practice E1004.
11.1.1 Eddy Current Test—Each tube shall be passed
through an eddy-current testing unit adjusted to provide
9. Mechanical Property Requirements
information on the suitability of the tube for the intended
9.1 Tensile Strength Requirements:
application. Testing shall follow the procedures of Practice
9.1.1 Product furnished under this specification shall con-
E243, except as modified in 11.1.1.2.
form to the tensile requirements prescribed in Table 2, when
11.1.1.1 The depth of the round-bottom transverse notches
tested in accordance with Test Methods E8.
and the diameters of the drilled holes in the calibrating tube
9.2 When specified in the contract or purchase order, the
used to adjust the sensitivity of the test unit are shown in Table
product shall conform to the Rockwell hardness requirement
3 and Table 4 respectively.
prescribed in Table 2 when tested in accordance with Test
11.1.1.2 The discontinuities used to calibrate the test system
Method E18.
may be placed in the strip from which the tube will be
9.2.1 The approximate Rockwell hardness values given in
manufactured. These calibration discontinuities will pass
Table 2 are for general information and assistance in testing,
through the continuous operations of forming, welding, and
and shall not be used as a basis for product rejection.
eddy-current testing. The test unit sensitivity required to detect
the resultant discontinuities shall be equivalent to or greater
10. Performance Requirements
than that required to detect the notches or drilled holes ofTable
10.1 Expansion Test Requirements—Tube specimens se-
3 and Table 4 respectively, or other calibration discontinuities
lected for test shall withstand an expansion of 15 % when
that may be used by mutual agreement between the manufac-
expanded in accordance with Test Method B153. This is
turer or supplier and the purchaser. Calibration discontinuities
defined as expansion of tube outside diameter in percent of
may be on the outside tube surface, the internal tube surface, or
original outside diameter. The expanded tube shall show no
through the tube wall and shall be spaced to provide signal
cracking or rupture visible to the unaided eye.
resolution adequate for interpretation. Each calibration discon-
10.2 Flattening Test Requirements—Test specimens at least
tinuity shall be detected by the eddy-current tester.
4ftinlengthshallbeflattenedondifferentelementsthroughout
11.1.1.3 Tubes that do not actuate the signaling device of
the length remaining after specimens for the expansion and
theeddy-currenttestershallbeconsideredasconformingtothe
metallographic tests have been taken. Each element shall be
requirements of this test. Tubes causing irrelevant signals
slowly flattened by one stroke of a press. The term “flattened”
becauseofmoisture,soil,andlikeeffectsmaybereconditioned
and retested. Such tubes, when retested to the original test
TABLE 1 Chemical Requirements
parameters, shall be considered to conform if they do not cause
Composition, %
output signals beyond the acceptable limits. Tubes causing
Element UNS No. C17510
irrelevant signals because of visible and identifiable handling
Beryllium 0.2–0.6
marks may be retested by the hydrostatic test prescribed in
Cobalt, max 0.3
11.2, or the pneumatic test prescribed in 11.3. Tubes meeting
Nickel 1.4–2.2
Iron, max 0.10 requirementsofeithertestshallbeconsideredtoconformifthe
Aluminum, max 0.20
tube dimensions are within the prescribed limits, unless other-
Silicon, max 0.20
wise agreed to by the manufacturer or supplier and the
Copper Remainder
purchaser.
B944 – 06
TABLE 2 Mechanical Property and Electrical Conductivity Requirements After Precipitation Heat Treatment
Yield Strength, ksi
Elongation in Rockwell Electrical
Temper Designation Tensile Strength
min, 0.2 % Offset
2 in. (50 mm), Hardness Conductivity
%min B IACS min, %
Standard Former ksi MPa ksi MPa
TF00 AT 100–130 (690–895) 10 80 (550) 92–100 45
TABLE 3 Notch Depth TABLE 5 Wall Thickness Tolerances
Outside Diameter, in. Outside Diameter, in.
Specified Wall
Specified Wall
0.625 to Over 0.750 to Over 1.250 to 0.625 to Over 1.00 to Over 2.00 to
Thickness, in.
Thickness,
0.750, incl. 1.250, incl. 2.000, incl. 1.00, incl. 2.00, incl. 3.00, incl.
in.
Over 0.017–0.032 0.005 0.006 0.007 Wall Thickness Tolerances, Plus and Minus, in.
Incl. 0.032–0.049 0.006 0.006 0.008
0.020 incl. to 0.032 0.004 0.004 0.004
Incl. 0.049–0.083 0.007 0.008 0.008
0.032 incl. to 0.035 0.004 0.004 0.005
0.035 incl. to 0.058 0.006 0.006 0.006
0.058 incl. to 0.083 0.008 0.008 0.008
TABLE 4 Diameter of Drilled Holes
Outside Diameter, Diameter of Drill
in. Drilled Holes, in. No.
TABLE 6 Diameter Tolerances
0.250–1.000, incl. 0.031 68
Wall Thickness, in.
Over 1.000–1.025, incl. 0.036 64 Outside
0.020 incl. 0.032 incl. 0.035 incl. 0.058 incl.
Over 1.250–1.500, incl. 0.042 58 Diameter,
to 0.032 to 0.035 to 0.058 to 0.083
Over 1.500–1.750, incl. 0.046 56 in.
Over 1.750–2.000, incl. 0.052 55 Diameter Tolerance, Plus and Minus, in.
0.625 incl. to 0.740 0.006 0.006 0.005 0.005
0.740 incl. to 1.000 0.006 0.006 0.005 0.004
1.000 incl. to 1.250 0.008 0.008 0.007 0.006
1.250 incl. to 1.500 0.008 0.008 0.008 0.007
11.2 Hydrostatic Test—When specified, each tube shall
1.500 incl. to 3.000 0.008 0.008 0.008 0.008
withstand, without showing evidence of leakage, an internal
hydrostatic pressure sufficient to subject the material to a fiber
12.2.2 Tubes Ordered to Nominal Wall—The maximum
stress of 7000 psi, determined by the following equation for
thin hollow cylinders under tension. The tube need not be plus and minus deviation from the nominal wall at any point
shall not exceed the values shown in Table 5.
tested at a hydrostatic pressure of over 1000 psig unless so
specified. 12.3 Diameter Tolerances shall be in accordance with Table
6.
P 5 2St/~D – 0.8t! (1)
12.3.1 Diameter—The outside diameter of the tubes shall
where: not vary from that specified by more than the amounts shown
P = hydrostatic pressure, psig,
in Table 6 as measured by “go” and “no-go” ring gauges. If no
t = thickness of tube wall, in.,
values are shown in the table, dimensions shall be as agreed
D = outside diameter of the tube, in., and
between the Purchaser and the manufacturer or supplier.
S = allowable stress of the material, psi.
12.4 Length Tolerances shall be in accordance with Table 7.
11.3 Pneumatic Test—When specified, each tube shall be
12.4.1 Length—The length of the tubes shall not be less
subjected to an internal air pressure of 100 psig minimum
than that specified but may exceed the specified value by the
without showing evidence of leakage. The test method used
amounts given in Table 7
shall permit easy visual detection of any leakage, such as by
12.5 Squareness—Thedeparturefromsquarenessoftheend
having the tube under water or by the pressure-differential
shall not exceed 0.016 in./in. of diameter.
method. Any evidence of leakage shall be cause for rejection.
12.6 Straightness Tolerances shall be in accordance with
Table 8.
12. Dimensions, Mass, and Permissible Variations
12.6.1 Forlengthsgreaterthan10ftthemaximumcurvature
12.1 Dimensions and tolerances for product described by shall not exceed ⁄2 in. in any 10-ft portion of the total length.
thisspecificationshallbeasspecified:WallThickness,Table3;
13. Workmanship, Finish and Appearance
Diameter, Table 4; Length, Table 5; and Straightness, Table 6.
13.1 The product shall be free of defects, but blemishes of
12.1.1 Tolerances on a given tube may be specified with
a nature that do not interfere with the intended application are
respect to any two, but not all three, of the following: outside
acceptable.
diameter, inside diameter, wall thickness.
12.2 Wall-thickness tolerances shall be in accordance with
TABLE 7 Length Tolerances
Table 5.
Specified Length, ft Tolerance, all plus, in.
12.2.1 Tubes Ordered to Minimum Wall—No tube at its
Up to 30, incl. 0.125
thinnest point shall be less than the specified wall thickness or
Over 30–60, incl. 0.250
greater than the specified wall thickness plus twice the toler-
Over 60–100, incl. 0.375
ance values shown in Table 5.
B944 – 06
TABLE 8 Straightness Tolerances
an additional specimen either from the same sample piece or
Maximum Curvature from a new sample piece shall be allowed.
Length, ft
(Depth of Arc) in.
15.3.3 If the results of the test on one of the specimens fail
Over 3–6, incl ⁄16
to meet the specified requirements, two additional specimens
Over 6–8, incl ⁄16
shall be taken from different sample pieces and tested. The
Over 8–10, incl ⁄2
results of the test on both of these specimens shall meet the
specified requirements. Failure of more than one specimen to
meet the specified requirements for a particular property shall
be cause for rejection of the entire lot.
14. Sampling
...