PA66 Sheet — Thicknesses, Sizes & Stock Forms
PA66 sheet is flat plate stock produced from Polyamide 66 (Nylon 66). Its higher strength, increased stiffness, and improved heat resistance compared to PA6 make it a preferred choice for structural panels, high-load wear plates, and components that must maintain dimensional stability under elevated thermal conditions.
At a glance:
- Thickness range: 0.125" to 4.0"
- Standard sheet sizes: 24" × 48" and 48" × 96"
- Thickness tolerance: ±10% (typical)
- Material: Polyamide 66 (PA66, Nylon 66) — extruded
- Color: Natural (off-white/ivory)
Standard Thickness Table
PA66 sheet is stocked in the following standard thicknesses:
| Thickness | Standard Sheet Size | Notes |
|---|---|---|
| 0.125" | 24" × 48" | Thin wear liners, light panels |
| 0.250" | 24" × 48" & 48" × 96" | General machining plate |
| 0.375" | 24" × 48" & 48" × 96" | Structural components |
| 0.500" | 24" × 48" & 48" × 96" | Heavy wear pads |
| 0.750" | 24" × 48" & 48" × 96" | Thick structural plates |
| 1.000" | 24" × 48" & 48" × 96" | High-load machined components |
| 2.000" | 24" × 48" | Precision machined blocks |
| 4.000" | 24" × 48" | Large machined parts |
Cut-to-size service is available from Ready Plastics for non-standard dimensions.
Mechanical Properties
PA66 outperforms PA6 in strength and thermal resistance, making it the preferred sheet grade for demanding applications:
| Property | Value |
|---|---|
| Tensile strength | Increased vs. PA6 |
| Tensile modulus (stiffness) | Higher than PA6 — stiffer panels under load |
| Compressive performance | Good load-bearing capability |
| Heat deflection temperature | Higher than PA6 |
| Density | ~0.042 lb/in³ (similar to PA6) |
| Flammability (UL 94) | HB |
| Water absorption | Lower saturation absorption than PA6 |
Refer to the PA66 datasheet for complete numeric specifications. Numerical values not provided in the brief are not reproduced here.
Typical Applications
PA66 sheet is used wherever PA6 sheet may be considered but higher mechanical or thermal demands apply:
- High-strength structural panels — replaces aluminum plate in weight-sensitive designs
- Wear slide plates — machinery guides and conveyor slides under elevated loads
- Thermal barrier components — performs at higher service temperatures than PA6
- Jigs and fixtures — machinable tooling plates with good dimensional stability
- Insulating panels — dielectric strength makes it suitable for electrical isolation applications
Machining PA66 Sheet
PA66 sheet machines similarly to PA6 but is marginally stiffer and harder. Standard carbide tooling works well. Saw cutting and routing produce clean edges when sharp tooling is used. Drilling should be done at moderate speeds with appropriate feed to prevent work hardening or melting at the bore surface. Allow material to stabilize at operating temperature before final fitting for precision applications.
Related
- PA66 Material Line Card
- PA66 Rod — round bar stock for turned components
- PA66 Tube — hollow stock for sleeves and bearing liners