Fibre Properties

General fibre information, not a specification for any individual rope.

Polyamide 6 & 6.6 (PA)
Brands
Nylon® Perlon® Enkalon®
Yarn Strength CN/dTex
7-9
Specific Gravity Kg/dm³
1,14
Strength Loss When Wet %
5-10
Water Absorption %
1-7
Knot Strength %
60-65
UV Resistance
good
Elongation at Break %
14-28
Creep
Slight creep under load
Wear Resistance
Very Good
Washing Temperature °C
50-60
Resistance to Acids %
good
Resistance to Petroleum Products
excellent
Resistance to Solvents
Formic Acid & Acetic Acid at High Temperature
Resistance to Alkali
Resistant to dilute solutions
Insulation Properties
Very Good
Short Term Temperature Resistance °C
130
Melting Point °C
215-260
Polyester (PES)
Brands
Diolen® Treveria® Dacron®
Yarn Strength CN/dTex
7-9
Specific Gravity Kg/dm³
1,38
Strength Loss When Wet %
0
Water Absorption %
0,5-2
Knot Strength %
55-60
UV Resistance
Very Good
Elongation at Break %
10-18
Creep
It is very difficult to measure
Wear Resistance
Very Good
Washing Temperature °C
50-60
Resistance to Acids %
good
Resistance to Petroleum Products
excellent
Resistance to Solvents
Phenols, Cresols Zinc Chloride
Resistance to Alkali
Good at Room Temperature
Insulation Properties
Very Good
Short Term Temperature Resistance °C
170
Melting Point °C
225
Polypropylene multifilament (PP)
Brands
Hostalen® Softlene® Leolene®
Yarn Strength CN/dTex
Approximately 6
Specific Gravity Kg/dm³
0,91
Strength Loss When Wet %
0
Water Absorption %
0
Knot Strength %
55-65
UV Resistance
Good when UV stabilized
Elongation at Break %
14-17
Creep
Creep under high load
Wear Resistance
reasonable
Washing Temperature °C
30
Resistance to Acids %
excellent
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
Resistant to dilute solutions
Insulation Properties
excellent
Short Term Temperature Resistance °C
80
Melting Point °C
170
High-tenacity polypropylene (PP)
Brands
Leolene® Arova® Betelon®
Yarn Strength CN/dTex
Approximately 8
Specific Gravity Kg/dm³
0,91
Strength Loss When Wet %
0
Water Absorption %
0
Knot Strength %
55-65
UV Resistance
Good when UV stabilized
Elongation at Break %
15-16
Creep
Creep under high load
Wear Resistance
reasonable
Washing Temperature °C
30
Resistance to Acids %
excellent
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
Resistant to dilute solutions
Insulation Properties
excellent
Short Term Temperature Resistance °C
80
Melting Point °C
170
Polyethylene (PE)
Brands
Lupolen® Vestalen® Wetalen®
Yarn Strength CN/dTex
Approximately 4,5
Specific Gravity Kg/dm³
0,95
Strength Loss When Wet %
0
Water Absorption %
0
Knot Strength %
50-60
UV Resistance
good
Elongation at Break %
10-19
Creep
Creep under high load
Wear Resistance
reasonable
Washing Temperature °C
30
Resistance to Acids %
excellent
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
durable
Insulation Properties
excellent
Short Term Temperature Resistance °C
70
Melting Point °C
150
High modulus polyethylene (UHMWPE)
Brands
Dyneema® Spectra®
Yarn Strength CN/dTex
35
Specific Gravity Kg/dm³
0,97
Strength Loss When Wet %
0
Water Absorption %
0
Knot Strength %
35-50
UV Resistance
good
Elongation at Break %
3,8
Creep
Creep under high load
Wear Resistance
good
Washing Temperature °C
30
Resistance to Acids %
excellent
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
excellent
Insulation Properties
excellent
Short Term Temperature Resistance °C
70
Melting Point °C
140
Aramid
Brands
Twaron® Technora® Kevlar® Heracron®
Yarn Strength CN/dTex
20-25
Specific Gravity Kg/dm³
1,44
Strength Loss When Wet %
0
Water Absorption %
2-5
Knot Strength %
30-35
UV Resistance
weak
Elongation at Break %
3,4
Creep
It is very difficult to measure
Wear Resistance
insufficient
Washing Temperature °C
80-90
Resistance to Acids %
Partially Resistant
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
Partially Resistant
Insulation Properties
excellent
Short Term Temperature Resistance °C
350
Melting Point °C
500 Decomposes
Liquid crystal polymer (LCP)
Brands
Vectran®
Yarn Strength CN/dTex
20
Specific Gravity Kg/dm³
1,41
Strength Loss When Wet %
0
Water Absorption %
1
Knot Strength %
30-50
UV Resistance
weak
Elongation at Break %
3,3
Creep
Not measurable
Wear Resistance
good
Washing Temperature °C
60
Resistance to Acids %
excellent
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
excellent
Insulation Properties
excellent
Short Term Temperature Resistance °C
200
Melting Point °C
280
PBO
Brands
Zylon®
Yarn Strength CN/dTex
37
Specific Gravity Kg/dm³
1,52
Strength Loss When Wet %
0
Water Absorption %
0,6
Knot Strength %
35-55
UV Resistance
weak
Elongation at Break %
2,8
Creep
Not measurable
Wear Resistance
insufficient
Washing Temperature °C
50
Resistance to Acids %
good
Resistance to Petroleum Products
excellent
Resistance to Solvents
Minimal Response
Resistance to Alkali
excellent
Insulation Properties
excellent
Short Term Temperature Resistance °C
500
Melting Point °C
650 Decomposes

Traditional Fibers

PA

Name
Polyamide / Nylon®
Specific gravity
1,14 Kg/dm³

PES

Name
Polyester / Dakron®
Specific gravity
1,38 Kg/dm³

PE

Name
Polyethylene
Specific gravity
0,95 Kg/dm³

PP

Name
Polypropylene
Specific gravity
0,91 Kg/dm³

High Strength Fibers

HMPE

Name
High Modulus Polyethylene
Brands
Dyneema® Spectra®
Specific gravity
0,97 Kg/dm³

LCP

Name
Liquid Crystal Polymer
Brands
Vectran®
Specific gravity
1,41 Kg/dm³

Aramid

Name
Aromatic Polyamide
Brands
Kevlar® Twaron® Technora® Heracron®
Specific gravity
1,44 Kg/dm³

PBO

Name
Polybenzoxazole
Brands
Zylon®
Specific gravity
1,52 Kg/dm³

Fibre brand notes

Dyneema®

Dyneema® is a high-strength polyethylene fibre brand owned by Avient since 1 September 2022. SK 75-78-90 yarns are used for yacht ropes.

Spectra®

It is a High Strength Polyethylene Thread produced by Honeywell company from the United States and Spectra® 900 - 1000 threads are used for Yacht Ropes.

Vectran®

Vectran® is a high-performance liquid crystal polymer (LCP) fibre produced by Kuraray.

Kevlar®

Kevlar® is a high-strength para-aramid fibre. Arclin acquired the Kevlar® and Nomex® aramids business from DuPont on 1 April 2026.

Twaron® Technora®

Twaron® and Technora® are high-performance aramid fibres and trademarks of Teijin Aramid.

Heracron®

It is a High Strength Polyamide Yarn produced by Kolon company from Korea.

Zylon®

It is a High Strength Yarn produced by Toyobo company from Japan.