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| MIL-R-60346C
18 June 1981
SUPERSEDING
MIL-R-60346B
4 April 1975
MILITARY SPECIFICATION
ROVING, GLASS, FIBROUS
(FOR PREPREG TAPE AND ROVING, FILAMENT
WINDING, AND PULTRUSION APPLICATIONS)
This specification is approved for use by all Departments and
Agencies of the Department of Defense.
1. SCOPE AND CLASSIFICATION
1.1 Scope.
This specification covers the requirements of certain con-
structions of
continuous filament, single or multiple end, fibrous glass
rovings. The
rovings shall be suitable for use in prepreg tape and fil-
ament winding
applications for reinforced plastic structures.
1.2 Classification. The rovings shall be of the following types, filament
sizes, classes, and yields as specified (see 6.2, 6.3, and 6.8).
Type I - ″E″ glass
G, H, J, K, L, M, N, P, S, and T filaments
Class 1 - Sizing system compatible with epoxy resin.
Class 2 - Sizing system compatible with polyester resin.
Class 3 - Sizing system compatibility as specified.
Type II - (6.8)
Type III - High tensile strength ″S″ glass.
Beneficial comments (recommendation, additions, deletions) and any pertinent
data which may be of use in improving this document should be addressed to:
Director, US Army Materials and Mechanics Research Center, ATTN: DRXMR-LS,
Watertown, MA 02172 by using the self-addressed Standardization Document
Improvement Proposal (DD Form 1426) appearing at the end of this document or
by letter.
FSC 8310
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