ASTM B369-96

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 369 – 96
Standard Specification for
Copper-Nickel Alloy Castings
This standard is issued under the fixed designation B 369; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope B 824 Specification for General Requirements for Copper
Alloy Castings
1.1 This specification covers requirements for copper-nickel
B 846 Terminology for Copper and Copper Alloys
alloy castings whose nominal compositions are shown in Table
E 527 Practice for Numbering Metals and Alloys (UNS)
1. These are as follows:
2.2 ASME Code:
Copper Alloy UNS No. Previous Designation
ASME Boiler and Pressure Vessel Code
C96200 Alloy A
2.3 AWS Standard:
C96400 Alloy B
AWS A5.6 Specification for Copper and Copper-Alloy Arc-
Welding Electrodes
1.2 Castings of these alloys are used primarily for
corrosion-resisting purposes in both constructional and pres-
3. Terminology
sure applications and particularly in marine pumps, valves, and
3.1 Definitions of terms relating to copper alloys can be
fittings.
found in Terminology B 846.
1.3 These alloys are considered weldable, but they may be
ordered with a weld test to ensure weldability. When extensive
4. Ordering Information
welding is to be performed on the casting, weldability tests
4.1 Orders for castings under this specification should
should be specified in the ordering information (4.2.6) to
include the following information:
ensure proper welding characteristics.
4.1.1 Specification title, number, and year of issue,
1.4 The values stated in inch-pound units are to be regarded
4.1.2 Quantity of castings,
as the standard. The values given in parentheses are provided
4.1.3 Copper Alloy UNS Number (Table 2),
for information purposes only.
4.1.4 Pattern or drawing number and condition (as-cast,
1.5 This hazard statement applies only to Section 6, Weld-
machined, etc.),
ability Test, of this specification. This standard does not
4.1.5 ASME Boiler and Pressure Vessel Code Requirements
purport to address all of the safety concerns, if any, associated
(Section 11),
with its use. It is the responsibility of the user of this standard
4.1.6 When material is purchased for agencies of the U.S.
to establish appropriate safety and health practices and
Government, the Supplementary Requirements of this specifi-
determine the applicability of regulatory limitations prior to
cation may be specified.
use.
4.2 The following are optional and should be specified in
2. Referenced Documents the purchase order when required:
4.2.1 Pressure test or soundness requirements (Specification
2.1 ASTM Standards:
B 824),
B 208 Practice for Preparing Tension Test Specimens for
4.2.2 Witness inspection (Specification B 824),
Copper Alloys for Sand, Permanent Mold, Centrifugal and
4.2.3 Certification (Specification B 824),
Continuous Castings
4.2.4 Foundry test report (Specification B 824),
4.2.5 Product marking (Specification B 824),
4.2.6 Weldability test (1.3 and Section 6), and
This specification is under the jurisdiction of ASTM Committee B05 on Copper
4.2.7 Approval of weld procedure and records of repairs
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
(Section 10).
Castings and Ingots for Remelting.
Current edition approved Sept. 10, 1996. Published November 1996. Originally
published as B 369 – 61 T. Last previous edition B 369 – 95.
2 4
The UNS system for copper and copper alloys (see Practice E 527) is a simple Annual Book of ASTM Standards, Vol 01.01.
expansion of the former standard designation system accomplished by the addition Available from the American Society of Mechanical Engineers, United Engi-
of a prefix “C” and a suffix “00”. The suffix can be used to accommodate neering Center, 345 East 47th Street, New York, NY 10017.
composition variations of the base alloy. Available from American Welding Society, 2501 NW 7th Street, Miami, FL
Annual Book of ASTM Standards, Vol 02.01. 33125.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B369–96
TABLE 1 Nominal Compositions
Composition, %
Copper Alloy UNS No.
Copper Nickel Iron Silicon Manganese Niobium
C96200 87.5 10.0 1.5 0.1 0.9 .
C96400 67.0 30.0 0.7 0.5 0.8 1.0
TABLE 2 Chemical Requirements
7.2 The block shall be molded, gated, and risered in a
Copper Alloy UNS No. Copper Alloy UNS No. manner to produce a sound casting without defects that might
C96200 C96400
interfere with welding or the interpretation of the results of the
Min, % Max, % Min, % Max, %
test.
Copper balance balance
7.3 The groove in the test block shall be completely filled
Lead . 0.01 . 0.01
with weld deposit metal, using the manual metallic-arc process
Iron 1.0 1.8 0.25 1.5
1 5
Nickel, incl cobalt 9.0 11.0 28.0 32.0
with ⁄8-in. (12.7-mm) or ⁄32-in. (3.97-mm) diameter copper-
Manganese . 1.5 . 1.5
nickel (70-30) coated electrodes conforming to classification
Silicon . 0.50 . 0.50
AWS ECuNi of AWS Specification A 5.6. The interpass
Niobium . 1.0 0.50 1.5
Phosphorus . 0.02 . 0.02
temperature need not be controlled, unless it is to be controlled
Sulfur . 0.02 . 0.02
in fabrication.
Carbon . 0.10 . 0.15
7.4 One ⁄8-in. (9.52-mm) minimum thick bend coupon (see
Fig. 2), shall be removed longitudinally from the center of the
welded block by machining, sawing, abrasive cutting, or other
5. Chemical Composition
suitable means. Cut surfaces and edges should be sanded
5.1 The castings shall conform to the chemical requirements
smooth if necessary. The side bend specimen then shall be bent
shown in Table 2 for the copper alloy UNS numbers specified
180° in a guided bend jig around a mandrel ⁄2 in. (38.1 mm)
in the purchase order.
in diameter with the weld located at the center of the bend.
5.2 These specification limits do not preclude the presence
7.5 Cracks or other open defects exceeding ⁄8 in. measured
of other elements. Limits may be established and analysis
in any direction in the fusion zone or heat-affected zone on the
required for unnamed elements agreed upon between the
convex surface of the specimen after bending shall be cause for
manufacturer or supplier and the purchaser. Copper may be
rejection. Cracks originating at weld-bead undercuts, at weld-
given as remainder and may be taken as the difference between
slag inclusions, or at casting defects shall not be cause for
the sum of all elements analyzed and 100 %. When all the
rejection.
elements in the table are analyzed, their sum shall be 99.5 %
minimum.
TABLE 3 Mechanical Requirements
6. Mechanical Properties
Copper Alloy UNS No. Copper Alloy UNS No.
6.1 Mechanical properties shall be determined from sepa-
C96200 C96400
rately cast test bar castings, and shall meet the requirements
A
Tensile strength, min, ksi (MPa) 45 (310) 60 (415)
shown in Table 3.
B A
Yield strength, min, ksi (MPa) 25 (170) 32 (220)
Elongation in 2 in. (50.8 mm), % 20 20
7. Weldability Test
A
ksi = 1000 psi.
B
Yield strength shall be determined as the stress producing an elongation under
7.1 When specified in the purchase order at least one test
load of 0.5 %, that is 0.01 in. (0.254 mm) in a gage length of 2 in. (50.8 mm).
cast as shown in Fig. 1 shall be prepared for each lot of welding
grade castings (4.2.6).
NOTE 1—For metric equivalents see Table 4. NOTE 1—For metric equivalents see Table 4.
FIG. 1 Cast Block for Weldability Test FIG. 2 Weldability Test Block
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B369–96
8. Casting Repair 9.1.7 Specimen Preparation (Section 11),
9.1.8 Test Methods (Section 12),
8.1 Alloys included in this specification are generally weld-
9.1.9 Significance of Numerical Limits (Sect
...