MIL-C-47244A (MI)
ASTM D 2240
-
Standard Test Method for Rubber Property-
Durometer Hardness
(Application for copies should be addressed to the American Society for
Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.)
(Non-Government standards and other publications are normally available from
the organizations that prepare or distribute the documents. These documents also may
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 sample. When required (see 6.2), a sample shall be subjected
to first article inspection (see 6.3) in accordance with Section 4.
3.2 Material. The material shall be a two-component, room-temperature
curing, filled, thermosetting, modified epoxy resin system. The resin system is
formulated by mixing a base resin and a curing agent as instructed by the
manufacturer.
3.3 Physical properties.
3.3.1 Appearance. The cured resin system shall be continuous and uniform in
texture. The color shall not vary from lot to lot.
3.3.2 Specific gravity. The specific gravity of the cured resin system shall be
not less than 1.2 nor more than 1.6.
3.3.3 Application time. The application time of the uncured resin system shall
be not less than 60 minutes at room temperature, defined as 25º ± 3º Celsius (C).
3.3.4 Flow. The flow of the freshly mixed resin system shall be not more than
0.3 inch when a cylindrical section approximately 0.375 inch high and 1.50 inch in
diameter is allowed to flow under its own weight on a vertical surface. In addition, the
resin system shall retain a flow not more than 0.30 inch throughout the entire
application time.
3.3.5 Hardness. Hardness of the cured resin system shall be as specified in
table I.
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