MIL-G-47316A (MI)
(Non-Government standards and other publications are normally available from
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be available in or through libraries or other informational services.)
2.3 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.
3. REQUIREMENTS
3.1 First article. When specified (see 6.2), a sample shall be subjected to first
article inspection (see 6.3) in accordance with 4.4.
3.2 Material. The material shall be graphite formed by the molding process
from petroleum coke having a particle size not greater than 0.006 inch combined with
coal tar pitch (see 4.7).
3.2.1 Dimensions. The dimensions of the graphite rectangular blocks and
cylindrical billets shall be as specified in the contract or order (see 6.2).
3.3 Properties.
3.3.1 Apparent density. Apparent density of the graphite shall be not greater
than 0.065 nor less than 0.060 ounce per 0.061 cubic inch (see 4.6.2).
3.3.2 Specific resistance. Specific resistance of the graphite shall be not
greater than 13.0 x 10-4 ohm - centimeter (ohm - cm) with the grain and not greater
than 17.0 x 10-4 ohm - cm across the grain (see 4.6.3).
3.3.3 Flexural strength. Flexural strength of the graphite shall be not less than
2600 pounds force per square inch (lbf/in2) with the grain and not less than 2400 lbf/in2
across the grain (see 4.6.4).
3.3.4 Ash content. Ash content of the graphite shall be not greater than 0.25
percent (see 4.6.5).
3.4 Marking. Each block or billet of graphite specified herein shall be
permanently marked in accordance with MIL-STD-130 with the following
information:
a.
Title, number and date of this specification
b.
Part number
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