Astm D 4018 – 99 pdf free download

Standard Test Methods for
Properties of Continuous Filament Carbon and Graphite
Fiber Tows1

This standard is issued under the fixed designation D 4018; 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 These test methods cover the preparation and tensile
testing of resin-impregnated and consolidated test specimens
made from continuous filament carbon and graphite yarns,
rovings, and tows to determine their tensile properties.

1.2 These test methods also cover the determination of the
density and mass per unit length of the yarn, roving, or tow to
provide supplementary data for tensile property calculation.

1.3 These test methods include a procedure for sizing
removal to provide the preferred desired fiber samples for
density measurement. This procedure may also be used to
determine the weight percent sizing.

1.4 These test methods include a procedure for determining
the weight percent moisture adsorption of carbon or graphite
fiber.

1.5 The values stated in SI units are to be regarded as the
standard. The values in parentheses are for information only.

1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

2.1 ASTM Standards:
D 70 Test Method for Specific Gravity/Density of Semisolid Bituminous Materials/Asphalt Cement/Soft Tar
Pitches by Pycnometer Test2
D 123 Terminology Relating to Textiles3
D 891 Test Methods for Specific Gravity, Apparent, of
Liquid Industrial Chemicals4
D 1193 Specification for Reagent Water5
D 3800 Test Method for Density of High-Modulus Fibers6
D 3878 Terminology of High-Modulus Reinforcing Fibers
and Their Composites5