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| Grade | Description | Process | Advantage |
|---|---|---|---|
| Nylon 6 | High chemical and heat resistance, and is stiff enough to retain its shape, but tough enough not to permanently deform under load | CNC Machining, Injection Molding | Circuit insulation boards. Switchgear. Rotor slot wedges. Gears. Wear strips & Chain guards. Machine guards |
| Nylon 66 | Nylon 6/6 has high mechanical strength and rigidity. It is resistant to chemicals and is stable at high temperatures. | CNC Machining, Injection Molding | Gears, Firearm components, Automotive engine compartments. |
| Nylon 11 | A fine bioplastic polyamide derived from castor oil. | CNC Machining, Injection Molding | Chemical resistance, Low water absorption, Low environmental impact. |
| Nylon 12 | Nylon 12 is a synthetic 3D printed polymer material that’s strong, durable and also has some flex to it. As a result, Nylon is a great material choice for snap fits, brackets, clips, and spring feature | 3D Printing (SLS/MJF), CNC Machining | Nearly Isotropic Parts Built Without Supports, Allowing for Complex Geometries Durable Production-Grade Thermoplastic |
| Nylon 12 GF | 20% Glass-Filled Nylon is much stiffer and has greater tensile strength than standard Nylon. It also has a low coefficient of friction and high thermal resistance. | 3D Printing, CNC Machining | High Rigidity, Resistant To Wear & Tear, Thermally Resilient |
| Processes | Lead Time | Color | Tolerance | Price | Applications |
|---|---|---|---|---|---|
| CNC Machining | As fast as 3 days | White & available in all major colors. | With drawing: as low as +/- 0.005 mm No drawing: ISO 2768 medium | Qty & Precision dependent | Gears and sliders, large parts, general-purpose, wear & heat-resistance applications |
| 3D Printing | 2-4 Days based on size | White & available in all major colors. | FDM - 150 µm SLS - 150 µm | Lowest in market | Functional prototypes, mechanical applications & Batch production. |
| Injection Molding | 20-30 Days | White & available in all major colors. | As low as +/- 0.030 mm | Qty & Precision dependent | Automotive applications, gears, bushings, bearings, washers, a lightweight substitute for metals where appropriate |
| Services Name | Max Size | Min Size | Min Thickness | Undercuts | Radii Depth |
|---|---|---|---|---|---|
| For CNC Machining | Max Part Size: 600 mm | Min End Mill Size: 0.8 mm | Min Wall Thickness: 0.5 mm | Undercuts: Square profile, full radius, dovetail profiles | Radii: Depth: Depth must not exceed 12x drill bit diameter. For end mills, depth must not exceed 10x tool diameter. |
| For 3D Printing | Max Part Size: 500x500x500 mm | Min Hole size : 1 mm | Min Wall Thickness: 1 mm | Min Feature Size : 3 mm | Recommended fillet & Chamfer angles : > 45 Deg |
| For Molding | Max Part Size: 500x500x500 mm | Min Hole size : 0.5 mm | Min Wall Thickness: 0.5 mm | Ribs should be 40-60% the thickness of outer walls and should still maintain draft | Minimum draft angle of 0.5°, or up to 5°, for faces with medium textures |
Nylon 11 is derived from castor oils and Nylon 12 comes from butadiene. Nylon 12 has a slightly lower melting point and density and Nylon 12 performs better at high temperatures and has superior UV resistance.
For complex geometries SLS nylon is cheaper & faster.
For simple geometries CNC machining is cheaper & faster.
PA12 & PA2200
Nylon 4,6 has highest melting point 295°C & Max Service
Temperature of 166°C
High performance polymers are thermoplastic polymers with high mechanical, thermal and chemical performance with innumerable uses. In fact, they can replace metals such as bronze, brass, stainless steel and aluminum alloys.
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Production In-Charge, Molbio
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Asst. Professor, BITS Pilani
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