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Cast Nylon (Polyamide) Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail: info@boedeker.com

1-800-444-3485

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GENERAL DESCRIPTION
Nylon is one of the most widely used plastics in the world, especially as a bearing and wear material. Nylons are frequently used as replacements for bronze, brass, aluminum, steel and other metals, as well as other plastics, wood, and rubber.

Nylons offer extremely good wear resistance, coupled with high tensile strength and modulus of elasticity. They also have high impact resistance, a high heat distortion temperature, and resist wear, abrasion, and vibration. In addition, nylons can withstand sustained contact with a wide variety of chemicals, alkalies, dilute acids or oxidizing agents.

Another important factor, both economically and mechanically, is the relative light weight of nylon -- approximately 1/8 the weight of bronze, 1/7 the weight of cast iron, and 1/2 the weight of aluminum -- which reduces both the inertial and static loads and eases the handling of large components during maintenance or replacement procedures.

REPRESENTATIVE CAST NYLON GRADES

MC®907, MC®901 - Cast Unfilled Nylon 6
Unmodified cast type 6 nylon offers the highest strength and hardness of the nylon 6 grades. MC907, the natural grade (off-white in color), is FDA, USDA and 3A-Dairy compliant and is primarily used for food contact parts. A heat-stabilized grade, MC901, (Blue in color) offers thermal stability to 260°F, and is used in bearing and structural applications, such as wheels, gears, and custom parts.

Nylatron® GSM - Cast Moly-Filled Nylon 6
Finely divided particles of "Moly" (molybdenum disulfide -- MoS2) are dispersed evenly throughout the nylon material during polymerization. The Moly particles act as a dry lubricant to enhance nylon's load bearing and wear capabilities while maintaining impact strength and toughness. It is most commonly used for gears, sheaves, sprockets and custom parts. It is Dark Grey in color.

Nyloil® - Cast Oil-Filled Nylon 6
Simply put, this is a cast nylon with built-in oil lubrication. During the manufacturing process, oil lubrication is completely and evenly dispersed throughout the cast nylon, making it an integral part of the material's structure that cannot spin out, dry out, or drain out, even under the harshest working conditions. This oil-filler reduces friction by as much as 25% at the bearing interface, and can result in longer wear life than unfilled or moly-filled cast nylons. The standard grade is Green in color, but a natural (off-white) colored FDA & USDA approved grade is also available.

Nylatron® GSM Blue - Cast Moly- & Oil-Filled Nylon 6
This grade combines both molybdenum disulfide (MoS2) and oil for the load capability of Nylatron GSM nylon, plus improved frictional characteristics. It excels in higher pressures and at low speeds. It is Dark Blue-Gray in color.

Nylatron® NSM - Cast Solid-Lubricant-Filled Nylon 6
This grade offers the best bearing and wear properties available. Solid lubricant additives, evenly dispersed throughout the nylon material, imparts self-lubricating, high PV, and superior wear characteristics. This Gray colored nylon grade is ideal for larger size parts, bearings, gears, and wear pads.

NOTE: Other Cast Nylon Grades are available ... contact us for more information!

( see also Extruded Nylon Grades Specifications )

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TYPICAL PROPERTIES of CAST NYLONS

ASTM or UL test Property Nylon 6
MC907,901
Unfilled
Nyloil
Oil-Filled
Nylatron
GSM

Moly-Filled
Nylatron
GSM Blue

Moly & Oil
Nylatron
NSM

Solid-Lube
PHYSICAL
D792 Density (lb/in³)
(g/cm³)
0.042
1.15
0.042
1.16
0.042
1.16
0.042
1.15
0.042
1.15
D570 Water Absorption, 24 hrs (%)
Saturation (%)
0.3
7.0
0.5
2.5
0.3
7.0
0.22
-
0.25
7.0
MECHANICAL
D638 Tensile Strength (psi) 12,000 10,000 10,500 10,000 11,000
D638 Tensile Modulus (psi) 400,000 425,000 400,000 500,000 410,000
D638 Tensile Elongation at Break (%) 20 50 30 35 20
D790 Flexural Strength (psi) 16,000 15,000 16,000 15,000 16,000
D790 Flexural Modulus (psi) 500,000 425,000 400,000 425,000 400,000
D695 Compressive Strength (psi) 15,000 13,000 14,000 13,000 14,000
D695 Compressive Modulus (psi) 400,000 325,000 400,000 425,000 400,000
D785 Hardness, Rockwell R R115 R110 R110 R117 R110
D256 IZOD Notched Impact (ft-lb/in) 0.4 1.6 0.5 0.9 0.5
THERMAL
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
3.5 3.5 3.5 5.9 5.0
D648 Heat Deflection Temp (°F / °C) at 264 psi 200 / 93 350 / 177 200 / 93 - 200 / 93
D3418 Melting Temperature (°F / °C) 420 / 215 450 / 232 420 / 215 420 / 215 420 / 215
- Max Operating Temp (°F / °C) 200 / 93 230 / 110 200 / 93 200 / 93 200 / 93
C177 Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)

-
-

-
-

-
-

-
-

-
-
UL94 Flammability Rating HB - HB - HB
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8" thick 500 550 400 - 400
D150 Dielectric Constant at 60 Hz 3.7 3.7 3.7 - -
D150 Dissipation Factor at 60 Hz - - - - -
D257 Volume Resistivity (ohm-cm) at 73°F, 50% RH > 1013 - > 1013 > 1013 > 1013
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
NYLATRON is a registered trademark of Quadrant DSM Engineering Plastic Products.
NYLOIL is a registered trademark of Cast Nylons, Ltd.
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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail: info@boedeker.com

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