Standard Specification for Seamless and Welded Copper--Nickel Tubes For Water Desalting Plants

SCOPE
1.1 This specification establishes requirements for seamless and welded copper-nickel tubes from 0.625 to 1.25 in. (15.9 to 31.8 mm) in diameter for use in heat exchangers in water desalting plants. The following alloys are involved: Copper Alloy UNS Nos. C70600, C71500, C71640, and C72200.
1.2 The values stated in inch-pound units are the standard. Values given in parentheses are provided for information only.
The following safety hazard caveat pertains only to the test methods of Section described in 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 its use.

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ASTM B552-98e1 - Standard Specification for Seamless and Welded Copper--Nickel Tubes For Water Desalting Plants
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e1
Designation: B 552 – 98
Standard Specification for
Seamless and Welded Copper–Nickel Tubes for Water
Desalting Plants
This standard is issued under the fixed designation B 552; 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.
e NOTE—Note 1 was editorially deleted in March 2000.
1. Scope * E 118 Test Methods for Chemical Analysis of Copper-
Chromium Alloys
1.1 This specification establishes requirements for seamless
E 243 Practice for Electromagnetic (Eddy-Current) Exami-
and welded copper-nickel tubes from 0.625 to 1.25 in. (15.9 to
nation of Copper and Copper-Alloy Tubes
31.8 mm) in diameter for use in heat exchangers in water
E 255 Practice for Sampling Copper and Copper Alloys for
desalting plants. The following alloys are involved: Copper
Determination of Chemical Composition
Alloy UNS Nos. C70600, C71500, C71640, and C72200.
E 478 Test Methods for Chemical Analysis of Copper
1.2 The values stated in inch-pound units are the standard.
Alloys
Values given in parentheses are provided for information only.
1.3 The following safety hazard caveat pertains only to the
3. Terminology
test methods of Section 16 described in this specification: This
3.1 For definitions of terms related to copper and copper
standard does not purport to address all of the safety concerns,
alloys, refer to Terminology B 846.
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
4. Classification
practices and determine the applicability of regulatory limita-
4.1 Tubes furnished to this specification are classified into
tions prior to its use.
two types, as follows:
2. Referenced Documents 4.1.1 Seamless tube and
4.1.2 Welded tube.
2.1 ASTM Standards:
B 111 Specification for Copper and Copper-Alloy Seamless
5. Ordering Information
Condenser Tubes and Ferrule Stock
5.1 Orders for products under this specification shall include
B 153 Test Method for Expansion (Pin Test) of Copper and
the following information:
Copper-Alloy Pipe and Tubing
5.1.1 ASTM designation and year of issue,
B 543 Specification for Welded Copper and Copper-Alloy
5.1.2 Copper Alloy UNS number designation,
Heat Exchanger Tube
5.1.3 Whether seamless or welded (Section 4),
B 601 Practice for Temper Designations for Copper and
5.1.4 Temper (Section 8),
Copper Alloys—Wrought and Cast
2 5.1.5 Dimensions: diameter and wall thickness (whether
B 846 Terminology for Copper and Copper Alloys
minimum or nominal), and length (Section 12),
E 8 Test Methods for Tension Testing of Metallic Materials
5.1.6 Total number of pieces of each size, and
E 62 Test Methods for Chemical Analysis of Copper and
4 5.1.7 How furnished, whether in straight lengths or coils.
Copper Alloys (Photometric Methods)
5.2 The following options are available and, when required,
E 76 Test Methods for Chemical Analysis of Nickel-Copper
4 are to be specified at the time of placing of the order:
Alloys
5.2.1 Whether further finish processing of welded tube is
needed (6.2.2.1),
This specification is under the jurisdiction of ASTM Committee B05 on Copper 5.2.2 Hydrostatic test (11.2),
and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipe
5.2.3 Pneumatic test (11.3),
and Tube.
5.2.4 Certification (Section 20), and
Current edition approved Nov. 10, 1998. Published March 1999. Originally
published as B 552–71. Last previous edition B 552–92.
Annual Book of Standards, Vol 02.01.
3 5
Annual Book of Standards, Vol 03.01. Annual Book of Standards, Vol 03.03.
4 6
Annual Book of Standards, Vol 03.05. Annual Book of Standards, Vol 03.06.
*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 552
5.2.5 Mill test report (Section 21). 8. Temper
8.1 Tempers within this specification are as defined in
6. Materials and Manufacture
Practice B 601.
6.1 Material:
8.1.1 Seamless Tube—The product shall be furnished in
6.1.1 The material of manufacture shall be cast billets of
either the O61 (annealed), or the H55 (light drawn, light
Copper Alloys UNS Nos. C70600, C71500, C71640, and
cold-worked) temper, as specified in the ordering information.
C72200 as specified in the ordering information, and shall be
8.1.2 Welded Tube—The product shall be furnished in either
of such quality and soundness as to be suitable for processing
the WO61 (welded and annealed) or the WC55 (welded and
into finished lengths or coils of tube to meet the properties
light cold worked) temper as specified in the ordering infor-
prescribed herein.
mation.
6.2 Manufacture:
8.2 Tubes shall conform to the tensile requirements shown
6.2.1 Seamless Tube— The product shall be manufactured
in Table 2.
by such hot extrusion or piercing, and subsequent cold working
9. Mechanical Property Requirements
and annealing as to produce a uniform, seamless wrought
structure in the finished product.
9.1 Tensile Strength:
6.2.2 Welded Tube— The product shall be manufactured
9.1.1 The product shall conform with the tensile strength
from cold rolled strip which is subsequently formed and
requirements prescribed in Table 2 for the temper, alloy and
welded by an automatic welding process.
type specified in the ordering information when tested in
6.2.2.1 As-welded tubes are permitted to have further pro-
accordance with Test Methods E 8.
cessing when agreement is established between the manufac-
10. Performance Requirements
turer or supplier and purchaser.
6.2.3 The product shall be cold worked and annealed as
10.1 Expansion Test Requirements:
necessary to meet properties of the temper specified.
10.1.1 Tube specimens selected for test shall withstand the
expansion shown in Table 3 at one end when tested in
7. Chemical Composition
accordance with Test Method B 153. The expanded tube shall
show no cracking or rupture visible to the unaided eye.
7.1 The product shall conform to the chemical composition
requirements specified in Table 1 for the Copper Alloy UNS 10.2 Flattening Test Requirements:
10.2.1 Tube specimens approximately 4 ft (1.22 m) long
number designation specified in the ordering information.
7.2 These composition limits do not preclude the presence shall be tested in the annealed condition by flattening on
different elements throughout the length. Each element shall be
of other elements. When required, limits for unnamed elements
shall be established and analysis required by agreement be- flattened by one stroke of a press. The term “flattened” shall be
interpreted as follows: a micrometer set at three times the wall
tween the manufacture or supplier and purchaser.
7.2.1 For copper alloys in which copper is specified as the thickness shall pass over the tube freely throughout the
flattened part except as the points where the change in element
remainder, copper may be taken as the difference between the
sum of all the elements analyzed and 100 %. of flattening takes place.
10.2.1.1 For seamless tube the flattened elements shall not
7.2.1.1 When all the elements in Table 1 are analyzed, their
sum shall be as shown in the following table: show cracking or rupture visible to the unaided eye. Superficial
ruptures resulting from surface imperfections shall not be cause
Copper Alloy UNS No. Copper Plus Named Elements, % min
for rejection.
C70600 99.5
10.2.1.2 For seam-welded tube, the weld shall be placed in
C71500 99.5
a position of maximum bend for at least one fourth of the
C71640 99.5
C72200 99.8
TABLE 2 Tensile Requirements
Temper
Copper Alloy Tensile Strength,
TABLE 1 Chemical Requirements
UNS No. min, ksi (MPa)
Standard Former
Composition, %
C70600 O61 annealed 40 (275)
Element Copper Alloy UNS No.
W061 welded and annealed 40 (275)
C70600 C71500 C71640 C72200 H55 light drawn, light cold worked 45 (310)
WC55 welded and light cold worked 45 (310)
Copper (incl silver) remainder remainder remainder remainder
C71500 O61 annealed 52 (360)
A A A A
Lead, max 0.05 0.05 0.05 0.05
WO61 welded and annealed 52 (360)
Iron 1.0–1.8 0.40–1.0 1.7–2.3 0.5–1.0
H55 light drawn, light cold worked 54 (370)
A A A A
Zinc, max 1.0 1.0 1.0 1.0
WC55 welded and light cold worked 54 (370)
Nickel (incl cobalt) 9.0–11.0 29.0–33.0 29.0–32.0 15.0–18.0
C71640 O61 annealed 63 (435)
Manganese 1.0 max 1.0 max 1.5–2.5 1.0
WO61 welded and annealed 63 (435)
Chromium . . . . . . . . . 0.30–0.70
H55 light drawn, light cold worked 75 (515)
AAAA
Other named elements
WC55 welded and light cold worked 75 (515)
Copper + elements with specific . . . . . . . . . 99.5 min
C72200 O61 annealed 45 (310)
limits
WO61 welded and annealed 45 (310)
A
When the product is for subsequent welding applications and so specified by H55 light drawn, light cold worked 50 (345)
WC55 welded and light cold worked 50 (345)
the purchaser, zinc shall be 0.50 % max, lead 0.02 % max, phosphorus 0.02 %
max, sulfur 0.02 max, and carbon 0.05 % max.
B 552
TABLE 3 Expansion Test Requirements
of 7000 psi (48 MPa) as determined by the following equation
Temper Expansion of for thin hollow cylinders under tension. The tube need not be
Tube Outside
subjected to a pressure gage reading over 1000 psi (7 MPa)
Copper Alloy
Diameter, % of
UNS No.
unless specifically stipulated in the contract or purchase order.
Original Outside
Standard Former
Diameter
P 5 2St/~D 2 0.8t! (1)
C70600 O61 annealed 30
W061 welded and annealed 30
where:
H55 light drawn, light cold worked 15
P 5 hydrostatic pressure, psi (MPa);
WC55 welded and light cold worked 15
t 5 wall thickness of the material, in. (mm);
C71500 O61 annealed 30
D 5 outside diameter of the material, in. (mm); and
WO61 welded and annealed 30
H55 light drawn, light cold worked 15
S 5 allowable stress of the material, psi (MPa).
WC55 welded and light cold worked 15
11.3 Pneumatic Test:
C71640 O61 annealed 30
11.3.1 When specified in the contract or purchase order,
WO61 welded and annealed 30
H55 light drawn, light cold worked 15
each tube shall be subjected to a minimum internal air pressure
WC55 welded and light cold worked 15
of 60 psig (415 kPa) for 5 s without showing evidence of
C72200 O61 annealed 30
leakage.
WO61 welded and annealed 30
H55 light drawn, light cold worked 15
WC55 welded and light cold worked 15 12. Dimensions, Mass, and Permissible Variations
12.1 Diameter—Tubes to be furnished shall range in outside
5 1
diameter, as specified, from ⁄8 to 1 ⁄4 in. (15.9 to 31.8 mm)
inclusive. The diameter of the tubes shall not vary from that
flattened elements. The flattened elements shall not show
specified by more than the following amount as measured by
cracking or rupture visible to the unaided eye. If the tube has
“go” and “no go” gages:
been further processed after welding and the weld cannot be
Specified Diameter, Tolerance, Plus and Minus
located, the test shall be performed in accordance with 10.2.1.
in. (mm) in. (mm)
10.3 Weld Quality Test Requirements:
10.3.1 Seam Welds—Conformance to the quality require-
To 1 (25.4) incl 0.004 (0.10)
Over 1 to 1.250 (25.4 to 31.8) incl 0.005 (0.13)
ments of 13.3 shall be demonstrated at the welding job site by
a 180° reverse-bend test. Specimens approximately 1 ⁄2 in.
12.1.1 When tubes are supplied in coils for straightening at
(38.1 mm) long containing the weld shall be sectioned along
jobsite the above tolerances apply to the finished straightened
the longitudinal axis of the tube with the seam weld centered in
tubes.
one of the test sections. The sections containing the seam weld
12.2 Wall Thickness—Tubes shall be furnished as specified,
shall be flattened in a vise or equivalent tool before bending,
with wall thicknesses in the range of 0.035 to 0.065 in. (0.889
and then bent 180° over a radius equal to three times the
to 1.65 mm), inclusive.
nominal tube wall thickness. The root of the weld shall be
12.2.1 The wall thickness at any point shall not be less than
located on the outside surface of the knuckle of the bend. There
that specified except when tubes are specifically ordered to a
shall be no evidence of cracks or lack of penetration in the
“nominal” wall thickness. When tube is ordered to a “nominal”
weld. In cases in which the seam-welded tube is further
wall thickness the deviation of the wall thickness from “nomi-
processed, it may be difficult or impossible to locate the weld,
nal” shall not exceed6 10 % of the nominal wall thickness,
and then this paragraph will not be a requirement.
expressed to the nearest 0.0005 in. (0.013 mm).
12.2.2 The residual inner-bead reinforcement after removal
11. Nondestructive Test Requirements
at seam-weld areas shall not exceed 0.006 in. (0.15 mm) in
11.1 Electromagnetic (Eddy-Current) Test:
height.
11.1.1 Each tube shall be subjected to an eddy-current test.
12.3 Length—The lengths of the straight tubes shall not be
Testing shall follow the procedures of Practice E 243.
less than that specified when measured at a temperature of
11.1.2 The provisions for the determination of “end-effect”
20°C but may exceed the specified value by the amounts given
in Practice E 243 shall not apply.
in Table 4. For tube ordered in coils, the length may not be less
11.1.3 When tested in accordance with Practice E 243, tubes
than that specified.
that do not actuate the signaling device of the testing unit shall
12.4 Squareness of Cut—The departure from squareness of
be considered as conforming to the requirements of the test.
the end of any straight tube shall not exceed 0.016 in./in. (0.016
11.1.4 Either notch depth or drilled hold standards shall be
mm/mm) of diameter.
used.
TABLE 4 Length Tolerance
11.1.4.1 Notch depth standards shall be 10 % of the wall
thickness. Specified Length Tolerance, All Plus
11.1.4.2 Drilled hole standards shall be per Table X1.2 of
ft (m) in. (mm)
Practice E 243.
Up to 15 (4.9) incl ⁄32 ( 2.4)
11.2 Hydrostatic Test: Over 15 to 20, incl (4.9–6.6) incl ⁄8 ( 3.2)
Over 20 to 30, incl (6.6–9.8) incl ⁄32 ( 4.0)
11.2.1 When specified in the contract or purchase order,
Over 30 to 60, incl (9.9–19.7) incl ⁄8 ( 9.5)
each tube shall stand, without showing evidence of leakage, an
Over 60 to 100, incl (19.7–32.8) incl ⁄2 (12.7)
internal hydrostatic pressure sufficient to produce a fiber stress
B 552
12.5 Tubes furnished in straight lengths shall be reasonably 14.2.1.3 Because of the discontinuous nature of the process-
straight when inspected at the mill. The maximum curvature ing of castings into wrought products, it is
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