Fiber Properties


Learn more about Cordage Fiber Properties:


ARAMID

(Kevlar)

COTTON

(Spur Yarn)

GLASS

(Fiberglass)

MANILA

(Natural Fiber)

NYLON

(Multifilament)

POLYESTER

(Multifilament)
POLY-
PROPYLENE

(Monofilament)
POLY-
PROPYLENE

(Multifilament)
BREAKING
TENACITY
(Grams per Denier)
21.7 gpd 3 to 5 gpd 9.6 gpd 5 to 7 gpd 5.7 to 9.5 gpd 6 to 9.5 gpd 3.5 to 7 gpd 2.5 to 8 gpd
SPECIFIC
GRAVITY
1.44 1.54 2.5 1.5 to 1.6 1.14 1.38 0.91 (floats) 0.91 (floats)
STRETCH
ELONGATION
AT BREAK POINT
2.5% 3 to 7% 3.1% 5 to 13% 15 to 28% 12 to 14% 14 to 30% 20 to 100%
ELASTIC
RECOVERY
100% 74 at 2%
45 at 5%
100% 75 at 2% 99 at 5%
89 at 8%
99 at 2%
88 at 5%
98 at 5% 98 at 5%
95 at 10%
MOISTURE
ABSORBANCY
4.5% 24% to 27% None 30% to 35% 4.2% to 8% 0.4% Negligible Negligible
EFFECT
OF HEAT
Decomposes
at 930° F.
Decomposes
at 302° F.
75% Tensile
at 65° F.
Melts at 2050° F.
Loses Strength
over 180° F.
Yellows
at 300° F.
Melts at 480° F.
Melts at 482° F. 50% Tensile
at 200° F.
Melts at 330° F.
50% Tensile
at 200° F.
Melts at 320° F.
EFFECT OF
ACIDS
Resists most acids. Some strength lost after long exposure. Disintegrates
in concentrated
solutions
Resists most acids Disintegrates
Very poor
Good resistance.
Dissolves in sulfuric acid.
Good resistance.
Dissolves in sulfuric acid.
Good resistance except with oxidizing agents. Good resistance except with oxidizing agents.
EFFECT OF
ALKALIS
Generally good resistance Swelling, but
no damage
Unaffected Very poor Inert Moderate Good resistance Good resistance
EFFECT OF
ORGANIC
SOLVENTS
Unaffected.
Should no be bleached.
Resistant to
common solvents
Unaffected Poor resistance Resistant.
Soluable in phenolic and formic acid.
Resistant. Soluable in phenolic acids. Insoluable in most except chlorinated hydrocarbons. Insoluable in most except chlorinated hydrocarbons.
EFFECT OF
SUNLIGHT
Loses strength after prolonged exposure Loses strength Excellent
resistance
Loses some
strength
Loses strength after prolonged exposure. Loses strength after prolonged exposure. Good resistance
if UV-stabliized
Good resistance to indirect sunlight.
EFFECT
OF AGE
Excellent resistance Negligible Excellent resistance Negligible None None Negligible Negligible
RESISTANCE
TO MILDEW
Not attacked Poor unless bleached Not attacked Poor Not attacked Not attacked Not attacked Not attacked
ABRASION
RESISTANCE
Good Good resistance Good Good Excellent
resistance
Excellent
resistance
Good resistance Good resistance
IDENTIFICATION Does not melt.
Decomposes at 930° F.
Burns rapidly Does not burn.
Melts at 2050° F.
Burns like wood,
hairy fibers
Melts before burning. Forms hard bead. Celery odor. Melts before burning. Forms hard bead. Pundent odor. Floats.
Melts before burning. Forms hard bead. Burning asphalt odor.
Floats.
Melts before burning. Forms hard bead. Burning asphalt odor.