ASTM B823-01
(Specification)Standard Specification for Materials for Nonferrous Powder Metallurgy (P/M) Structural Parts
Standard Specification for Materials for Nonferrous Powder Metallurgy (P/M) Structural Parts
SCOPE
1.1 This specification covers a variety of nonferrous powder metallurgy (P/M) structural materials and includes a classification system, or material designation code. With the classification system, this specification includes chemical composition and minimum tensile yield strength.
1.2 The property values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
Note 1--Paragraphs 6.1 and 8.1 govern material classification by the designation code. The classification system is explained in the Appendix.
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B823 – 01
Standard Specification for
Materials for Nonferrous Powder Metallurgy (P/M) Structural
1
Parts
This standard is issued under the fixed designation B823; 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 4.2 Orders for parts under this specification may include the
following information:
1.1 This specification covers a variety of nonferrous powder
4.2.1 Certification, if required (see Section 10),
metallurgy (P/M) structural materials and includes a classifi-
4.2.2 Test methods and mechanical properties other than
cation system, or material designation code. With the classifi-
strength (see 8.2 and 8.3),
cationsystem,thisspecificationincludeschemicalcomposition
4.2.3 Density (see 7.1),
and minimum tensile yield strength.
4.2.4 Porosity and oil content (see 7.2), and
1.2 The property values stated in inch-pound units are to be
4.2.5 Special packaging, if required.
regarded as the standard. The values given in parentheses are
for information only.
5. Materials and Manufacture
NOTE 1—Paragraphs 6.1 and 8.1 govern material classification by the
5.1 Structural parts shall be made by pressing and sintering
designation code. The classification system is explained in the Appendix.
metal powders. Parts may also be made by repressing and
resinteringsinteredparts,ifnecessary,toproducefinishedparts
2. Referenced Documents
in conformance with the requirements of this specification.
2
2.1 ASTM Standards:
2
B243 Terminology of Powder Metallurgy
6. Chemical Composition
B328 Test Method for Density, Oil Content, and Intercon-
6.1 Thematerialshallconformtotherequirementsprovided
nected Porosity of Sintered Metal Structural Parts and
in Table 1.
3
Oil-Impregnated Bearings
6.2 Chemical analysis, if required, shall be performed by
2.2 Other Standard:
any method agreed upon by the manufacturer and the pur-
MPIF Standard 35, Materials Standard for P/M Structural
chaser.
4
Parts
7. Physical Properties
3. Terminology
7.1 Density:
3.1 Definitions—Definitions of powder metallurgy terms
7.1.1 The buyer and the seller may agree upon a minimum
can be found in Terminology B243. Additional descriptive
average density for the part and minimum densities for specific
information is available in the Related Materials section of Vol
regions of the part.
02.05 of the Annual Book of ASTM Standards.
7.1.2 Density shall be determined in accordance with Test
Method B328.
4. Ordering Information
7.2 Porosity:
4.1 Materials for parts covered by this specification shall be
7.2.1 The buyer and the seller may agree upon a minimum
ordered by materials designation code.
volume oil content for parts that are to be self-lubricating.
7.2.2 The buyer and the seller may agree upon a functional
test for porosity in parts that are to be self-lubricating, or for
1
This test method is under the jurisdiction of ASTM Committee B09 on Metal
permeability where fluid flow must be restricted.
Powders and Metal Powder Products and is the direct responsibility of Subcom-
mittee B09.05 on Structural Parts.
8. Mechanical Properties
Current edition approved Oct. 10, 2001. Published December 2001. Originally
8.1 The minimum guaranteed tensile yield strength, as
published as B823 – 92. Last previous edition B823 – 93. DOI: 10.1520/B0823-01.
2
Annual Book of ASTM Standards, Vol 02.05.
shown in Table 2, is a numerical suffix to the material
3
3
Withdrawn. The last approved version of this historical standard is referenced
designation code and is read as 10 psi. The code is adopted
on www.astm.org.
4
from MPIF Standard 35.All tensile yield strengths are defined
Available from Metal Powder Industries Federation, 105 College Road East,
Princeton, NJ 08540. as the 0.2 % offset yield strengths.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B823 – 01
TABLE 1 Chemical Requirements
A
Chemical Composition, %
Material
Designation
Cu Zn Pb Sn Ni
CZ-1000 88.0 remainder . . . . . . . . . min
91.0 remainder . . . . . . . . . max
CZP-1002 88.0 remainder 1.0 . . . . . . min
91.0 remainder 2.0 . . . . . . max
CZ-2000 77.0 remainder . . . . . . . . . min
2
Pressing Area = 1.00 in.
80.0 remainder . . . . . . . . . max
CZP-2002 77.0 remainder 1.0 . . . . . . min Note—Dimensions specified, except G and T are those of the die.
Dimensions
80.0 remainder 2.0 . . . . . . max
CZ-3000 68.5 remainder . . . . . . . . . min
in. mm
71.5 remainder . . . . . . . . . max
5
A—Half length of reduced section ⁄8 15.88
CZP-3002 68.5 remainder 1.0 . . . . . . min
71.5 r
...
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