Nylon is one of the most widely used engineering thermoplastics. It is frequently used as a replacement for bronze, brass, aluminum, steel, and other metals, as well as other plastics, wood, and rubber. It offers excellent mechanical performance while being cost effective, lightweight, and noise resistant. In addition, nylon can withstand sustained contact with a wide variety of chemicals, alkalis, dilute acids, and oxidizing agents.

There are many nylon grades available today, the most common being nylon 6/6 and nylon 6. The properties of these products are very similar and they can typically be used interchangeably. With that said, there are some advantages and limitations to each material. For example, nylon 6/6 has a higher melting point (by 70℉ / 21℃) and intermittent use temperature than cast nylon 6 and is less absorbent; however, because of its extrusion processing method, nylon 6/6 is limited to constant cross-section profiles and certain size constraints. Nylon 6 also typically offers better dimensional stability, machineability, and higher compressive and tensile strengths.

Nylons 11 and 12 are also available at a higher price point. These materials typically have lower water absorbency and better electrical properties. Certain additives are available to make these grades more flexible and ductile and they can also be cast.

There are a number of fillers available for nylon materials, the most common being molybdenum disulfide (MD). Nylon MD shares many of the same properties as natural nylon but with added load-bearing capacity, toughness, thermal properties, lubricity, and durability. Some other fillers include glass, oil, and carbon fiber.

Benefits

  • Low friction, self-lubricating, and high resistance to wear, abrasion, and vibration

  • High tensile strength

  • High impact resistance

  • High modulus of elasticity

  • Lightweight

  • Chemical resistance to alkalis, dilute acids or oxidizing agents

*Note: typical grades of nylon are NOT moisture-resistant or UV-resistant and typically have a relatively high coefficient of thermal expansion

Common Applications

  • Rollers, bearings, bushings, and gears

  • Wheels and wear components

  • Seals and washers

  • Sheaves and sprockets

  • Slides and cams

  • Electrical and semiconductor connectors

  • Steel and mining equipment

  • Automotive and transportation equipment

  • Food processing and bottling equipment

  • Sports & recreational equipment

     

Typical Nylon 6/6 Properties Chart

 

UNITS

ASTM TEST

Nylon
6/6

Tensile strength

psi

D638

12,000

Flexural Modulus

10^5 psi

D790

440,000

Impact Strength, Izod

ft-lbs/in of notch

D256

1.0

Heat deflection temperature @ 264 psi

°F

D648

194

Max Service Temp – Long Term

°F

UL94

210

Water absorption (1/8” immersion 24 hours)

%

D570

1.2

Coefficient of thermal expansion

10^5 in/in-°F

D696

4.0

Elongation

%

D638

60

Plastics international

Values may vary. Please ask your Erie Industrial Plastics representative for more specific information.

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