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Page Title:
Table II. Copper content of copper base alloys. |
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|  MIL-B-3461G
INT. AMENDMENT 6 (IH)
ASTM INTERNATIONAL
ASTM-B-487 - Metal and Oxide Coating Thickness by Microscopical Examination
of a Cross Section, Measurement of
(Application for copies of ASTM publications should be addressed to ASTM International,
100 Bar Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the
references cited herein, the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained."
PAGE 4
Paragraph 3.3.1:
Delete Table II in its entirety and substitute the following Table II:
TABLE II. Copper content of copper base alloys.
ALLOY
COPPER
Yellow Brass
64.0%-68.5%
Red Brass
84.0%-86.0%
Gilding Metal
94.0%-96.0%
Free Cutting Brass
60.0%-63.0%
Bronze
89.0%-91.0%
Nickel Brass
63.0%-65.5%
63.0%-65.5% 1/
Nickel Silver
Low Brass
78.5%-81.5%
1/ When nickel silver is used as a base material, the
nickel content shall be not less than 18%.
PAGE 5
Paragraph 3.3.2
Delete in its entirety and substitute the following:
3.3.2 Gold plating.
3.3.2.1 24 karat gold for plating. Gold for plating shall be 24 karat unless otherwise
specified.
3.3.2.2 22 karat gold for plating. Gold for plating Army buttons shall be 22 karat with
nickel underplating..
Paragraph 3.3.4 - Delete in its entirety and substitute the following:
"3.3.4 Solder
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