PA6 Nylon 6 Unfilled: Versatile General-Purpose Engineering Thermoplastic
Published: 2026-06-08
PA6 unfilled is the most widely used nylon grade — excellent balance of strength, toughness, wear resistance, and processability at moderate cost.
Technical Properties
| Density | 1.13 g/cm³ |
|---|---|
| Tensile Strength | 75 MPa |
| Melting Point | 220 °C |
| Shrinkage Rate | 1.0-1.5% |
| Flexural Modulus | 2.7 GPa |
| Hdt | 75 °C at 1.82 MPa |
| Continuous Service Temp | 100 °C |
Engineering Tool: Shrinkage & Cost Estimator
Calculate part weight, mold cavity dimensions accounting for shrinkage, and material cost — all locally in your browser.
Equivalents & Cross-References
| Equivalent / Alternate | Action |
|---|---|
| BASF Ultramid B3S | |
| DuPont Zytel 7301 | |
| Lanxess Durethan B30S |
Frequently Asked Questions
Does PA6 need to be dried before molding?
Yes. PA6 absorbs up to 3% moisture at saturation. Dry at 80°C for 4 hours to <0.1% moisture. Undried PA6 produces splay, brittleness, and dimensional variation. After molding, PA6 parts must be conditioned (exposed to ambient humidity for 24-48h) to reach equilibrium moisture and stable dimensions.
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References & Industry Standards
- ASTM International. Standard Specifications for Engineering Plastics & Thermoplastics. astm.org
- UL Prospector. Plastics & Elastomers Material Database. ulprospector.com
- MatWeb. Material Property Data for Engineering Thermoplastics. matweb.com
- ISO 1043. Plastics — Symbols and Abbreviated Terms. iso.org