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【范围】
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1.1 Scope:
This specification covers the requirements for adhesives in film form for bonding metal facings to
metal cores and to metal components of sandwich panels which are intended for use in primary and
secondary structural airframe parts that may be exposed to temperatures up to 500°F (260°C).
1.2 Classification:
The adhesive shall be furnished in the following types, classes and cure groups as specified
(see 6.2).
1.2.1 Types:
Type I - For long-time exposure to temperatures from -67° to +180°F (-55° to +82°C).
Type II - For long-time exposure to temperatures from -67° to +300°F (-55° to +149°C).
Type III - For long-time exposure from -67° to +300°F (-55° to +149°C) and short-time exposures
from 300° to 500°F (149° to 260°C).
Type IV - For long-time exposure from -67° to +500°F (-55° to +260°C).
1.2.2 Classes:
Class 1 - For bonding metal facings to metal cores only.
Class 2 - For bonding metal facings to metal cores, inserts, edge attachments and other
components of completed sandwich structures.
1.2.3 Cure temperature groups:
Group 1 - Cure temperature 100°F or less
Group 2 - Cure temperatures over 100°F to 200°F
Group 3 - Cure temperatures over 200° to 300°F
Group 4 - Cure temperatures over 300°FstrRefField
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