ASTM B131-96

Standard Specification for Copper Alloy Bullet Jacket Cups

SCOPE
1.1 This specification establishes the requirements for bullet jacket preform cups produced of Copper Alloy UNS No. C22000 for processing into bullet jackets of the following types and classes:
1.1.1 Type I—Caliber 0.30.
1.1.2 Type II—Caliber 0.45.
1.1.3 Type III—Caliber 0.50.
1.1.4 Type IV—As specified in the contract or order.
1.1.5 Class I—Not annealed.
1.1.6 Class II—Annealed.
1.2 The values stated in inch-pound units are the standard, except for grain size, which is given in SI units. Values in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Apr-2002
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.01 - Plate, Sheet, and Strip

Relations

• Replaced By: ASTM B131-02 - Standard Specification for Copper Alloy Bullet Jacket Cups
• Effective Date: 10-Apr-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 131 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Copper Alloy Bullet Jacket Cups
This standard is issued under the fixed designation B 131; 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.
1. Scope * 4. Ordering Information
1.1 This specification establishes the requirements for bullet 4.1 Orders for product under this specification should in-
jacket preform cups produced of Copper Alloy UNS No. clude the following information:
C22000 for processing into bullet jackets of the following 4.1.1 ASTM designation and year of issue.
types and classes: 4.1.2 Type and class (Section 1),
1.1.1 Type I—Caliber 0.30. 4.1.3 Grain size (Section 7),
1.1.2 Type II—Caliber 0.45. 4.1.4 Dimensions and tolerances (see 8.1),
1.1.3 Type III—Caliber 0.50. 4.1.5 Drawing number to which order applies (see 8.1), and
1.1.4 Type IV—As specified in the contract or order. 4.1.6 Work test requirements if required (Section 11).
1.1.5 Class I—Not annealed. 4.1.7 In addition, when material is purchased for agencies of
1.1.6 Class II—Annealed. the U.S. Government (see Supplementary Requirements sec-
1.2 The values stated in inch-pound units are the standard, tion).
except for grain size, which is given in SI units. Values in
5. Material and Manufacture
parentheses are for information only.
5.1 Material:
2. Referenced Documents
5.1.1 The material of manufacture shall be annealed plate,
2.1 ASTM Standards: sheet, strip, or disks of wrought Alloy UNS No. C22000
B 601 Practice for Temper Designations for Copper and processed to produce even-topped cups.
Copper Alloys—Wrought and Cast 5.2 Manufacture:
E 3 Practice for Preparation of Metallographic Specimens 5.2.1 The material shall be blanked and cupped to meet the
E 29 Practice for Using Significant Digits in Test Data to cup dimensions specified, and subsequently annealed, if re-
Determine Conformance with Specifications quired. The annealed cups shall be cleaned to provide a surface
E 112 Test Methods for Determining Average Grain Size suitable for subsequent redrawing into bullet jackets.
E 255 Practice for Sampling Copper and Copper Alloys for
6. Chemical Composition
Determination of Chemical Composition
6.1 The material shall conform to the chemical requirements
E 478 Test Methods for Chemical Analysis of Copper
Alloys prescribed in Table 1.
6.2 Limits may be established and analysis required for
3. Terminology
unnamed elements by agreement between manufacturer and
3.1 Definitions: purchaser.
3.1.1 blank (blanking), n—a piece of metal removed from 6.3 Either copper or zinc may be taken as the difference
sheet or strip, intended for subsequent fabrication such as between the sum of all elements analyzed and 100 %. When all
cupping and drawing. elements in Table 1 are analyzed, the sum shall be 99.8 % min.
3.1.2 cup (cupping), n—a shallow cylindrical shell closed at
7. Grain Size of Annealed Tempers
one end, normally intended for further fabrication, formed
7.1 Unless there is a prior agreement between the purchaser
from a blank.
and supplier the grain size of class II cups shall be produced to
1 have average grain size corresponding to the limits of the
This specification is under the jurisdiction of ASTM Committee B-5 on Copper
and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate, O5025 or O5040 tempers as specified in Table 2.
Sheet and Strips.
7.1.1 Grain size ranges other than those specified in Table 2
Current edition approved April 10, 1996. Published June 1996. Originally
are to be established by agreement between manufacturer and
published as B 131 – 40 T. Last previous edition B 131 – 88.
purchaser.
Annual Book of ASTM Standards, Vol 02.01.
Annual Book of ASTM Standards, Vol 03.01.
7.2 Grain size ranges for other cups shall established be by
Annual Book of ASTM Standards, Vol 14.02.
agreement between manufacturer and purchaser.
Annual Book of ASTM Standards, Vol 03.05.
*A Summary of Changes section appears at the end of this standard.
B 131
A
TABLE 1 Chemical Requirements
11.2.1 Five hundred cups or more shall be subjected to a
Element Composition, % working test by processing them through the first drawing
operation. The cups shall draw satisfactorily without showing
Copper 89.0–91.0
Lead, max 0.05
defects that will cause them to be unsuitable for the purpose
Iron, max 0.05
intended.
Zinc remainder
11.2.2 Five thousand cups shall be subjected to a working
A
If the presence of bismuth is suspected during analysis, further analysis shall
test by processing them satisfactorily into bullet jackets.
be made to determine the concentration of this. If bismuth is found in excess of
0.006 %, the lot shall be rejected.
11.3 Grain Size—Each cup in the sample shall be tested.
11.3.1 If the material fails to pass the visual inspection
TABLE 2 Grain Size Requirements examination or a work test, or if more than one specimen fails
the grain size test, a retest shall be permitted on a sample
Standard Designation Average Grain Size, mm
(B 601) nominal min max
double that of the original sample. The result of the retest or
OS025 0.025 0.015 0.035
retests shall meet the specified requirements.
OS040 0.040 0.025 0.050
11.4 Chemical Analysis—An additional sample in accor-
dance with 10.1.2.1 is permitted to be made and tested.
8. Dimensions, Mass, and Permissible Variations
12. Specimen Preparation
8.1 All dimensions and tolerances of cups shall be as
12.1 For grain size measurements, either tangential grinding
indicated on the drawings furnished with the purchase order or
and polishing, or cutting, mounting, and polishing methods
contract.
may be used to reach the zone (Fig. 1).
12.1.1 The test specimen shall be prepared in accordance
9. Workmanship, Finish, and Appearance
with Practice E 3.
9.1 The cups shall be uniform in quality and shall be free of
12.2 Specimens for chemical analysis shall be prepared in
conditions which would interfere with the purpose for which
accordance with Practice E 255.
the cups are intended.
13. Test Methods
10. Sampling
13.1 The properties and chemical composition enumerated
10.1 The lot size, portion size, and selection of pieces shall
in this specification shall, in case of disagreement, be deter-
be as follows:
mined in accordance with the following ASTM methods:
10.1.1 Lot Size—40 000 lb (18 144 kg) or fraction thereof.
Test ASTM Designation
10.1.2 Portion Size: Chemical analysis E 478
Grain size E 3, E112
10.1.2.1 For chemical analysis—5 cups. In accordance with
Practice E 255, drillings, millings, etc., shall be taken in
13.2 The test method(s) used for determination of ele-
approximately equal weight from each of the sample cups
ment(s) required by contractural or purchase order agreement
selected and combined into one composite sample. The mini-
shall be as agreed upon between the manufacturer and the
mum weight of the composite sample that is divided into three
purchaser.
equal parts shall be 150 g. Each of the three equal parts shall
13.3 Grain size measurements shall be made in a zone that
be placed in a package and sealed: one for the seller, one for the
is the approximate mid-point of the sidewall length and
purchaser, and one for an umpire.
thickness of the cup as shown in Fig. 1. At least three
10.1.2.2 For grain size determination—20 cups.
10.1.2.3 For the determination of dimensions—200 cups.
10.1.2.4 For the visual inspection—2000 cups.
10.1.2.5 For work tests—500 cups or 5000 cups, when and
as required.
11. Number of Tests and Retests
11.1 Visual Inspection—Each cup in the sample shall be
visually inspected.
11.1.1 Major Defects—Not more than 0.25 % of the cups in
the sample shall contain the following major defects: scaly
metal, deep scratches, laminations, slivers, laps, cracks, or
wrinkles.
11.1.2 Minor Defects—Not more than 2 % of the cups in
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