K-SPEC® core yarn strength retention is based on test results of components at 65°C/150°F (or less) for 6 months. K-SPEC® has a 100% strength retention when exposed to: age, 10% detergent solution, rot and mildew, sunlight and toluene; 99% strength retention when exposed to: acetic acid, gasoline, hydrochloric acid 1m, hydraulic fluid, kerosene, and sea water; 98% retention when exposed to: 25% ammonium hydroxide, 10% hypophosphite solution, and 40% phosphoric acid; 97% retention when exposed to 5m sodium hydroxide; 95% retention when exposed to Portland cement and sulfuric acid; and 88% retention when exposed to Clorox bleach, and nitric acid.

Fiber Properties

 
Nylon
Polyester
Aramid
Poly-Arylate (Liquid Crystal)
UHMviPE
K-Spec® fiber
Fiber Properties
Tenacity -dry g/d

Elongation at break %

Moisture Regain %

Specific Gravity

7.5 – 10.5

15 – 28

4.0 – 6.0

1.14

7.0 – 10.0

12-18

<0.5

1.38

28

4.6

2

1:38

26 – 29

3.8

<0.10

1.41

35 – 40

3.5 – 3.80

0

.97

35

3.8

0

1.11

Chemical Resistance
Solvents

Dilute Acids:
Conc Acids:

Dilute Alkalis:
Conc Alkalis:

Good

Good
Fair

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Good

Good
Fair

Good
Fair

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Good
Good

Good
Good

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<90%

Excel
<30%

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Temperature Tolerance
Melt Point 425°F
218°C
490°F
254°C
900°F
482°C
625°F
329°C
300°F
149°C
320°F
160°C