Astm D 4389 – 99 pdf free download

Standard Specification for
Finished Glass Fabrics Woven From Rovings1

This standard is issued under the fixed designation D 4389; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This specification primarily covers glass fabrics woven
from “E” electrical continuous glass fiber rovings that are
intended primarily as a reinforcing material in laminated
plastics for structural use.

1.2 This specification specifies the terminology, definitions,
general requirements, and physical requirements for woven
roving glass fiber fabrics. This specification permits the application of sizing materials to the glass fiber roving during
manufacture that helps facilitate weaving. When used as
permitted in this specification, such materials are compatible
with the resin matrix as specified in the contracting instrument.
NOTE 1—Sizing materials on glass fiber yarns, in most cases, are
removed by various cleaning procedures as a first stage in preparing a
finished fabric. When these yarn sizing materials are removed during a
the cleaning procedure, they need not be compatible with the subsequent resin
matrix.

1.3 The values stated in either SI units or inch-pound units
are to be regarded as standard. The values stated in each system
may not be exact equivalents; therefore, each system shall be
used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
NOTE 2—This specification is one of a series to provide a substitute for
the following Military Specifications:
MIL-Y-1140H Yarn, Cord, Sleeving, Cloth, and Tape-Glass
MIL-C-9084C Cloth, Glass Finished for Resin Laminates
MIL-C-19663C Cloth, Glass, Woven Roving for Plastic Laminates

2. Referenced Documents

2.1 ASTM Standards:
D 123 Terminology Relating to Textiles2
D 578 Specification for Glass Fiber Strands2
D 1776 Practice for Conditioning Textiles for Testing2
D 2408 Test Method for Finish Content of Woven Glass
Fabric, Cleaned, and After-Finished with Amino-Silane
Type Finishes for Plastic Laminates3
D 2409 Test Method for Finish Content of Woven Glass
Fabric, Cleaned, and After-Finished with Vinyl-Silane Type