ASTM-B271 › Historical Revision Information
Standard Specification for Copper-Base Alloy Centrifugal Castings
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This specification establishes the requirements for copper-based brass or bronze centrifugal castings. Mechanical properties are determined from test bar castings and should meet the requirements listed herein. Brinell hardness readings should be taken on the grip end of tension test bars. All castings should not be repaired by welding without customer approval. UNS C95520 copper alloy castings are used in the heat treated condition only.
Scope
1.1 This specification establishes requirements for centrifugal castings of copper-base alloys having the nominal compositions shown in Table 1.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
TABLE 1 Nominal Compositions
Classification | Copper Alloy UNS No. | Commercial Designation | Copper | Tin | Lead | Zinc | Nickel | Iron | Alum- inum | Mang- anese | Silicon |
---|---|---|---|---|---|---|---|---|---|---|---|
Leaded red brass | C83600 | 85-5-5-5 | 85 | 5 | 5 | 5 | ... | ... | ... | ... | ... |
C83800 | 83-4-6-7 or commercial red brass | 83 | 4 | 6 | 7 | ... | ... | ... | ... | ... | |
Leaded semi-red brass | C84400 | 81-3-7-9 or valve composition | 81 | 3 | 7 | 9 | ... | ... | ... | ... | ... |
C84800 | 76-2½-6½-15 or semi-red brass | 76 | 2½ | 6½ | 15 | ... | ... | ... | ... | ... | |
Leaded yellow brass | C85200 | high copper yellow brass | 72 | 1 | 3 | 24 | ... | ... | ... | ... | ... |
C85400 | commercial No. 1 yellow brass | 67 | 1 | 3 | 29 | ... | ... | ... | ... | ... | |
C85700 | leaded naval brass | 61 | 1 | 1 | 37 | ... | ... | ... | ... | ... | |
High-strength yellow brass | C86200 | high-strength manganese bronze | 63 | ... | ... | 27 | ... | 3 | 4 | 3 | ... |
C86300 | high-strength manganese bronze | 61 | ... | ... | 27 | ... | 3 | 6 | 3 | ... | |
C86400 | leaded manganese bronze | 58 | 1 | 1 | 38 | ... | 1 | ½ | ½ | ... | |
C86500 | No. 1 manganese bronze | 58 | ... | ... | 39 | ... | 1 | 1 | 1 | ... | |
C86700 | leaded manganese bronze | 58 | 1 | 1 | 34 | ... | 2 | 2 | 2 | ... | |
Silicon bronze and silicon | C87300 | silicon bronze | 95 | ... | ... | ... | ... | ... | ... | 1 | 4 |
brass | C87400 | silicon brass | 82 | ... | ½ | 14 | ... | ... | ... | ... | 3½ |
C87500 | silicon brass | 82 | ... | ... | 14 | ... | ... | ... | ... | 4 | |
C87600 | silicon bronze | 89 | ... | ... | 6 | ... | ... | ... | ... | 5 | |
Tin bronze and leaded | C90300 | 88-8-0-4, or modified “G” bronze | 88 | 8 | ... | 4 | ... | ... | ... | ... | ... |
tin bronze | C90500 | 88-10-0-2, or “G” bronze | 88 | 10 | ... | 2 | ... | ... | ... | ... | ... |
C92200 | 88-6-2-4 or “M” bronze | 88 | 6 | 2 | 4 | ... | ... | ... | ... | ... | |
C92300 | 87-8-1-4, or Navy PC | 87 | 8 | 1 | 4 | ... | ... | ... | ... | ... | |
High-lead tin bronze | C93200 | 83-7-7-3 | 83 | 7 | 7 | 3 | ... | ... | ... | ... | ... |
C93500 | 85-5-9-1 | 85 | 5 | 9 | 1 | ... | ... | ... | ... | ... | |
C93600 | 81-7-12 | 81 | 7 | 12 | ... | ... | ... | ... | ... | ... | |
C93700 | 80-10-10 | 80 | 10 | 10 | ... | ... | ... | ... | ... | ... | |
C93800 | 78-7-15 | 78 | 7 | 15 | ... | ... | ... | ... | ... | ... | |
C94300 | 71-5-24 | 71 | 5 | 24 | ... | ... | ... | ... | ... | ... | |
Aluminum bronze | C95200 | Grade A | 88 | ... | ... | ... | ... | 3 | 9 | ... | ... |
C95300 | Grade B | 89 | ... | ... | ... | ... | 1 | 10 | ... | ... | |
C95400 | Grade C | 85 | ... | ... | ... | ... | 4 | 11 | ... | ... | |
C95410 | 84 | ... | ... | ... | 2 | 4 | 10 | ... | ... | ||
C95900 | 82.5 | ... | ... | ... | ... | 4.5 | 13 | ... | ... | ||
Nickel aluminum bronze | C95500 | Grade D | 81 | ... | ... | ... | 4 | 4 | 11 | ... | ... |
C95520 | 78.5 | ... | ... | ... | 5.5 | 5.0 | 11 | ... | ... | ||
C95800 | 81.3 | ... | ... | ... | 4.5 | 4 | 9 | 1.2 | ... | ||
Leaded nickel bronze | C97300 | 12 % leaded nickel silver | 57 | 2 | 9 | 20 | 12 | ... | ... | ... | ... |
C97600 | 20 % leaded nickel silver | 64 | 4 | 4 | 8 | 20 | ... | ... | ... | ... | |
C97800 | 25 % leaded nickel silver | 66 | 5 | 2 | 2 | 25 | ... | ... | ... | ... |
Keywords
centrifugal castings; copper alloy castings; copper-base alloy castings
Copper Alloy UNS No. | Solution Treatment (not less than 1 h followed by water quench) | Annealing Treatment (not less than 2 h followed by air cool) |
---|---|---|
C95300 | 1585–1635°F | 1150–1225°F |
(860–890°C) | (620–660°C) | |
C95400 | ||
C95410 | 1600–1675°F | 1150–1225°F |
C95500 | (870–910°C) | (620–660°C) |
C95520 | (2 h followed by | 925–1000°F |
water quench) | (495–540°C) | |
1600–1700°F | ||
(870–925°C) |
To find similar documents by ASTM Volume:
02.01 (Copper and Copper Alloys)
To find similar documents by classification:
To find similar documents by Federal Supply Class Code:
FSC Standardization Area MECA (Metal Castings)
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Document Number
ASTM-B271-08
Revision Level
2008 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Oct. 1, 2008
Document Type
Specification
Page Count
6 pages
Committee Number
B05.05