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Nylon 66 (PA66)

Nylon 66 (PA66) is a higher-performance version of Nylon 6 with better heat resistance, higher stiffness, and improved mechanical properties. Its higher melting point makes it suitable for under-hood automotive and electrical applications.

Machinability

68/100

Tolerance

±0.05 mm

Category

Engineering Plastics

Material Properties

PropertyValue
Tensile Strength82 MPa (11.9 ksi)
Yield Strength69 MPa (10 ksi)
HardnessRockwell R120
Density1.14 g/cm³
Machinability Rating68/100
Thermal Conductivity0.26 W/m·K
Melting Point262 °C
Tolerance±0.05 mm

Common Grades

Nylon 66PA66Nylon 66-GF30

Advantages

  • Higher heat resistance than Nylon 6
  • Better stiffness and strength
  • Good chemical resistance
  • Self-lubricating

Limitations

  • High moisture absorption
  • More expensive than Nylon 6
  • Dimensional instability with moisture

Common Applications

Automotive under-hood parts

Electrical housings

Cable ties

Gear wheels

Structural parts

Industries Served

AutomotiveElectronicsIndustrial Machinery

Available Surface Finishes

As-MachinedPolishedDyed

Material Comparisons

Nylon vs Delrin (POM) for CNC Parts: Which Plastic to Choose?

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Nylon 6 vs Nylon 66 for CNC Machining: Key Differences

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Related Materials

PEEK (Polyether Ether Ketone)

Machinability: 60/100

View Details →

Delrin (POM / Acetal)

Machinability: 85/100

View Details →

Nylon 6 (PA6)

Machinability: 70/100

View Details →

PTFE (Teflon)

Machinability: 65/100

View Details →

Core CNC Services for Nylon 66 (PA66)

CNC MillingView service →CNC TurningView service →5-Axis CNCView service →Wire EDMView service →Surface FinishingView service →Rapid PrototypingView service →

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