Polycaprolactam | (C6H11NO) n


Available formats: Bars, Tubes, and Plates


Nylon 6 or polycaprolactam is a semi-crystalline polyamide. Unlike most other nylons, nylon 6 is not a condensation polymer, but is formed by ring opening polymerization.


This makes it a special case in the comparison between condensation and addition polymers. Its competition with nylon 6,6 and the example it gave have also shaped the economic aspects of the synthetic fiber industry.


Nylon 6 fibers are strong and have high tensile strength, as well as elasticity and shine. They are wrinkle proof and highly resistant to abrasion and chemicals such as acids and alkalis. Fibers can absorb up to 2.4% of water, although this reduces tensile strength. The glass transition temperature of Nylon 6 is 47 ° C.


As a synthetic fiber, Nylon 6 is generally white but can be dyed in a solution bath before production to obtain different color results.


All nylons can be reinforced with glass fibers, glass beads and carbon fibers to improve their mechanical and thermal performance. Filled materials containing PTFE and molybdenum disulfide are available for bearing materials with adequately low friction and improved wear.


Nylon 6 is used in applications where toughness, lubricity and wear are important, such as sprockets.


Nylon fibers are used in textiles, fabrics and carpets. Nylon films are used for food packaging, which offer toughness and low gas permeability, and together with their temperature resistance, for food packaging to boil in the bag.


Molding and extrusion compounds find many applications as substitutes for metal parts, for example, in automobile engine components. Nylon intake manifolds are rugged, corrosion resistant, lighter and cheaper than aluminum (once tool costs are covered) and offer better air flow due to a soft internal hole instead of rough one.


Its self-lubricating properties make it useful for gears and bearings. Electrical insulation, corrosion resistance and toughness make nylon a good choice for high load parts in electrical applications such as insulators, switch boxes and ubiquitous cable clamps. Another important application is for power tool housings.

Physical Properties

Physical Properties Rule Units Values
Specific weight ISO 1183 g / cm3 1,14
Water absorption upon saturation ISO 62 % 9,5
Moisture absorption at 23 ° C? 50% RH ISO 62 % 3
Upper limit of working temperature - ºC 90
Lower limit of working temperature - ºC -40

Mechanical properties

Mechanical properties Rule Units Values
Elastic limit (2) ISO 527 MPa 90/45 *
Elongation in performance (2) ISO 527 % 4,5 / 20 *
Tensile strength until breakage (2) ISO 527 MPa
Elongation to breakage (2) ISO 527 % - /? fifty *
Traction Module (2) ISO 527 MPa 3000 / 1000 *
Impact resistance without notches ISO 179 KJ / mm2 NB
Notched Impact Resistance ISO 179 KJ / mm2 9 / NB *
Rockwell hardness M ISO 2039 N / mm2 85
Shore D hardness DIN 53505 ° Shore D -
Flexural strength - at 3.5% ISO 178 MPa -
Flex module ISO 178 MPa -
Compressive tension (1% voltage-23 ° C) ISO 604 MPa 24
Compression module ISO 604 MPa -
Deformation under load 100 Mpa-24 hr- RT - % -
Poisson relationship Abs 0,38 / 0,45 *

(1) For a tension-free resistance of 5000 h: approximate reduction of the value in 1000 hours to 50% of the tensile strength. (2) Stabilized in air at 50% relative humidity. (*) Drying / stabilizing in the atmosphere 50% HR -23 ° C. (**) Stabilizing in the atmosphere 50% HR -23 ° C. (***) Resistance to UV exposure is achieved with pigmentation or specific additive. (****) Bonding and painting are possible after a special surface treatment. The data shown in this table have been determined in our laboratories and should only be considered as a useful reference; They did not commit for us in the different forms of application. As a result of our technological experience and our best knowledge, the data offers an initial evaluation of the polymer. This data cannot be applied to finished parts as obtained under specific conditions and is only an average value. Values should be considered a useful reference and are given without compromise.


  • NYLON Bars
  • NYLON Pipes
  • NYLON plates

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