Nylon is nylon right? Not so fast! Although cast nylon and extruded nylon have a lot in common, there are some differences that are based in the two processes. This infographic takes a look at the biggest differences between cast and extruded nylon. These differences can determine whether one nylon will be better than another for a particular application.

1. Cast Nylon | Extruded Nylon
Knowing key differences between these materials can help you decide
which nylon is right for your application.
Cast Nylon
(Nylon 6 | PA6)
What’sDifferent
Extruded Nylon
(Nylon 6/6)
Poured into a mold
Thicker Shapes
Near Net Shapes
Low Stress
High Strength
Excellent Dimensional
Stability
Low Creep
Higher Intermittent
Temperature
Good combination
of properties
Excellent Finish
Forced through a die
Standard Sizes
Nearly any length
What Do They Have In Common
Nylon Can Replace Metals & More
Nylon replaces brass, bronze, cast iron, aluminum, rubber, phenolic and more
Filled Versions Of Nylon Enhance Specific Properties
Available with a variety of fillers that enhance specific characteristics
Alro Plastics Stocks The Nylon Brands You Know & Trust
Tecamid®
, Nylatron®
, MC®
901, Nyloil®
SUSTAMID®
and more
FDA compliant versions of cast nylon and extruded nylon are available
Machining Nylon
Nylon can be
machined with
standard metal
machining equipment
Shhhh
Nylon has noise
dampening qualities
that aid in reducing
noise
Uses for Nylon
Gears, Bearings, Seals,
Guides, Gaskets,
Bushings, Valve Seals,
Thrust Washers
Reduce Weight
In general, nylon
weighs approximately
1/7 an equal
amount of bronze
Tough ● Low Friction ● Abrasion Resistant & Corrosion Resistant
Typical Properties of Cast Nylon Typical Properties of Extruded Nylon
Information and data is for general guidelines only.
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Specific Gravity D792 1.15-1.17
Compressive Strength D638 13,500 +/-
Specific Gravity D792 1.15-1.17
Compressive Strength D638 12,500
Tensile Strength D638 10,000 +/- Tensile Strength D638 11,500 +/-
Compressive Modulus D638 3 325,000 +/-
Water Absorption 24 hr D570 0.5
Water Absorp Saturation D570 5.0
Compressive Modulus D638 4 420,000
Water Absorption 24 hr D570 0.30
Water Absorp Saturation D570 7.0