ASTM B282-83a(1995)e1

Standard Specification for Sintered Brass Structural Parts (Withdrawn 2000)

SCOPE
1.1 This specification covers sintered metal powder structural parts made of one copper-zinc-lead powder composition of two types depending on density.  
1.2 The values stated in inch-pound units are the standard. The SI values in parentheses are for information only and may be approximate.  Note 1-Definitions of powder metallurgy terms can be found in Definitions B243 and additional useful information is available in the Related Material section of Vol 02.05 of the Annual Book of ASTM Standards.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1994
• Withdrawal Date: 09-Oct-2000
• ICS: 77.160 - Powder metallurgy
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.05 - Structural Parts

Standards Content (Sample)

lb Designation: B 282 - 83a (Reapproved 1995)e1
Standard Specification for
Sintered Brass Structural Parts'
This standard is issued under the fixed designation B 282: the number immediately following the designation indicates the year of
onginal adoption or. in the case of revision. the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscnpt epsilon (0 indicates an editorial change since the last revision or reapproval.
Non-Keywords were added editonally in October 1995.
with Test Methods E478 or any other standard method
1. Scope
agreed upon between the manufacturer and the purchaser.
1.1 This specification covers sintered metal powder struc-
tural parts made of one copper-zinc-lead powder composi-
6. Physical Properties
tion of two types depending on density.
6.1 Density:
1.2 The values stated in inch-pound units are to be
6.1.1 If the density does not vary more than 0.3 g/cm3
regarded as the standard. The values given in parentheses are
from one section of the structural part to any other section,
for information only.
the overall density shall fall within the limits prescribed in
NOTE I-Definitions of powder metallurgy terms can be found in
Table 2.
Terminology B 243 and additional useful information is available in the
6.1.2 If the density varies more than 0.3 &cm3 from one
Related Material section of Vol 02.05 of the Annual Book oJASTM
Slandards
section of the part to any other, the manufacturer and the
purchaser shall agree upon the critical section of the part
2. Referenced Documents
where the stresses are highest. The density of this critical
section, rather than the average density, shall fall within the
2. I ASTM Standards:
limits prescribed in Table 2.
B 243 Terminology of Powder Metallurgy2
6.1.3 Density shall be determined in accordance with Test
B 328 Test Method for Density, Oil Content, and Inter-
Method B 328.
connected Porosity of Sintered Powder Metal Structural
6.2 Porosity:
Parts and Oil-Impregnated Bearings2
6.2.1 When specified, the interconnecting porosity shall
E 478 Test Methods for Chemical Analysis of Copper
be not less than 7 volume % for Type 1 brass. Type II brass
Alloys3
has insufficient interconnected porosity to justify estab-
3. Ordering Information
lishing a specification.
6.2.2 The porosity shall be determined in accordance with
3.1 Orders for parts under this specification shall include
Test Method B 328.
the following information:
3.1.1 Dimensions (see Section 8),
7. Mechanical Properties
3.1.2 Chemical Composition (see Section 5 and Table l),
3.1.3 Density, Type (see 6.1 and Table 2),
7.1 The manufacturer and the purchaser shall agree on
3.1.4 Porosity (see 6.2),
qualification tests for the determination of mechanical
3.1.5 Mechanical Requirements (see Section 7), and properties.
3.1.6 Certification (see Section 13). 7.2 These tests shall be performed on production parts.
7.3 The tests shall be determined after consideration of
4. Materials and Manufacture
the function of the part.
4.1 Structural parts shall be made by molding and
7.4 The limits and sampling plan shall be agreed upon
sintering metal powders by repressing and resintering, if between the manufacturer and the purchaser.
necessary, to produce finished parts conforming to the 7.5 All shipments of parts subsequent to the establishment
requirements of this specification. of testing conditions shall conform to the limits agreed upon.
NOTE 2-The mechanical propemes in tension and compression that
5. Chemical Composition
may be expected from standard specimens molded to size are given in
5.1 Orders for parts shall conform to the requirements of
the Appendix to this specification.
Table 1.
5.2 The chemical analysis shall be made in accordance 8. Permissible Variations in Dimensions
8.1 Permissible variations in dimensions shall be within
the limits specified on the drawings describing the structural
I This specification is under the junsdiction of ASTM Committee 59 on Metal
parts accompanying the order or shall be within the limits
Powders and Metal Powder Products and is the direct responsibility of Subcorn-
specified in the order.
mittee 809.05 on Structural Parts.
Current edition approved Jan. 28 and March 25. 1983. Published May 1983.
Originally published as B 282-53 T. Last previous edition B 282-70 (1976).
9. Workmanship, Finish, and Appearance
Annual Book uJASTM Srandards. Vol 02.05.
Annual Buuk oJASTM Siandards. Vol 03.05. 9.1 Structural parts shall be uniform in composition.
ASTM 8282 REVUA 83 m 0759510 0588104 2LB

B282
TABLE 1 Chemical Requirements 10.3 Mechanical Tests-The manufacturer and purchaser
shall agree on a representative number of specimens for
Element Composition. %
77.0 to 80.0 mechanical tests.
copper
Lead 1.0 to 2.0
Nickel. max o. 1 1 I. InsDection
Tin, max 0.1
1 1.1 Unless otherwise specified, ins
...