ASTM B806-23

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B806 − 14 (Reapproved 2022) B806 − 23
Standard Specification for
Copper Alloy Permanent Mold Castings for General
Applications
This standard is issued under the fixed designation B806; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishescovers requirements for copper alloy permanent mold castings for general applications. Nominal
compositions of the alloys under this specification are shown in Table 1.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form part of this specification to the extent
referenced herein:
2.2 ASTM Standards:
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous
Castings
B824 Specification for General Requirements for Copper Alloy Castings
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Ordering Information
3.1 Orders for casting under this specification shall include the following information:
3.1.1 Quantity of castings required,
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on Castings
and Ingots for Remelting.
Current edition approved May 1, 2022Oct. 1, 2023. Published May 2022October 2023. Originally approved in 1990. Last previous edition approved in 20142022 as
B806 – 14.B806 – 14 (2022). DOI: 10.1520/B0806-14R22.10.1520/B0806-23.
The UNS system for copper and copper alloys (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition of a
prefix “C” and a suffix “00.” The suffix can be used to accommodate composition variations of the base alloy.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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B806 − 23
TABLE 1 Nominal Composition
Copper Nominal Composition
Classification Alloy
Nickel (incl
Copper Aluminum Iron Manganese Silicon Lead Zinc Tin
UNS No. Cobalt)
A
Yellow brass C85470 62.5 0.5 . . . . . . . . . . . . . . . 34.3 2.5
Silicon brass C87500 82.0 . . . . 4.0 . 14.0 .
C87800 82.0 . . . . 4.0 . 14.0 .
B
C87850 76.0 . . . . . . . . . . . . 3.0 . . . 20.9 . . .
C
Lead-free yellow brass C89540 61.0 0.40 0.30 . 0.5 . . 36.0 0.8
Aluminum bronze C95300 89.0 10.0 1.0 . . . . . .
C95400 85.0 11.0 4.0 . . . . . .
C95410 84.0 10.0 4.0 . 2.0 . . . .
Nickel aluminum bronze C95500 81.0 11.0 4.0 . 4.0 . . . .
C95800 81.3 9.0 4.0 1.2 4.5 . . . .
A
Phosphorus 0.13.
B
Phosphorus 0.12.
C
Bismuth 0.9; selenium 0.03.
3.1.2 Copper Alloy UNS number (Table 2) and temper (as-cast, heat-treated, and so forth), (4.2),
3.1.3 Specification number, title, and year of issue.
3.1.4 Pattern or drawing number, and condition (cast, machined, and so forth),
3.1.5 Pressure test requirements, if specified in the purchase order (Specification B824),
3.1.6 Soundness requirements, if specified in the purchase order (Specification B824),
3.1.7 Repair of castings (Section 7),
3.1.8 Certification, if specified in the purchase order (Specification B824),
3.1.9 Foundry test report, if specified in the purchase order (Specification B824),
3.1.10 Witness inspection, if specified in the purchase order (Specification B824),
3.1.11 Product marking, if specified in the purchase order (Specification B824), and
3.1.12 Castings for Seawater Service (Section 4).
TABLE 2 Chemical Requirements
Composition, % max except as indicated
Copper
Copper + Sum
Classification Alloy
Nickel (incl of named
Copper Aluminum Iron Manganese Silicon Lead Zinc Tin
UNS No.
Cobalt) elements,
min
A
Yellow brass C85470 60.0–65.0 0.10–1.0 0.20 . . . 0.09 Rem 1.0–4.0 99.5
Silicon brass C87500 79.0 min 0.5 . . . 3.0–5.0 0.09 12.0–16.0 . 99.5
B
C87800 80.0 min 0.15 0.15 0.15 0.20 3.8–4.2 0.09 12.0–16.0 0.25 99.8
C
C87850 75.0–78.0 . . . 0.10 0.10 0.20 2.7–3.4 0.09 Remainder 0.30 99.5
Lead-free yellow C89540 58.0–64.0 0.10–0.60 0.50 . 1.0 . 0.10 32.0–38.0 1.2 99.5
D
brass
Aluminum bronze C95300 86.0 min 9.0–11.0 0.75–1.5 . . . . . . 99.0
C95400 83.0 min 10.0–11.5 3.0–5.0 0.25 1.5 . . . . 99.5
C95410 83.0 min 10.0–11.5
...