Overview
Ertalon 6 PLA is a registered trade name for cast polyamide 6 (cast nylon, PA 6 G). It is therefore the same semi-crystalline engineering thermoplastic as our already listed PA 6 G - the difference lies purely in the trade name, not in the material itself. Chemically, Ertalon is identical to extruded polyamide 6, but it is polymerised directly in the mould or semi-finished block by anionic polymerisation. This casting process allows the production of very large, thick-walled semi-finished products with uniform material quality across the entire cross-section, higher crystallinity and lower internal stress than extruded PA 6.
In practice, this means Ertalon 6 PLA achieves somewhat higher stiffness, hardness and heat deflection temperature than extruded PA 6. The main advantage, however, lies primarily in the availability of very large, low-stress semi-finished products that could hardly be produced economically from extruded material at this size. The material is also characterised by high toughness, good impact strength, high abrasion resistance and good sliding properties - typical strengths of all PA 6 materials.
Ertalon 6 PLA is preferred for large-format plain bearings, bushings and gears with large cross-sections, for components requiring a low internal stress state, and in the oil and gas industry, wind power, conveying technology, vehicle construction and food processing. For small standard parts, our already listed extruded PA 6 is usually the more economical choice.
Technical Data
| Property | Value | Test Standard |
|---|---|---|
| General Properties | ||
| Density | 1.15 g/cm³ | DIN EN ISO 1183-1 |
| Moisture absorption | 2.5 % | DIN EN ISO 62 |
| Flammability (3 mm / 6 mm) | HB / HB | UL 94 |
| Mechanical Properties | ||
| Yield stress | 75 MPa | DIN EN ISO 527 |
| Elongation at break | 45 % | DIN EN ISO 527 |
| Tensile modulus | 3400 MPa | DIN EN ISO 527 |
| Notched impact strength | 3 kJ/m² | DIN EN ISO 179 |
| Shore hardness | 83 scale D | DIN EN ISO 868 |
| Thermal Properties | ||
| Melting temperature | 216 °C | ISO 11357-3 |
| Thermal conductivity | 0.25 W/(m·K) | DIN 52612-1 |
| Specific heat capacity | 1.70 kJ/(kg·K) | DIN 52612 |
| Coefficient of linear expansion | 80 · 10⁻⁶/K | DIN 53752 |
| Long-term service temperature | -40 … 110 °C | Average |
| Short-term max. service temperature | 170 °C | Average |
| Heat deflection temperature | 95 °C | DIN EN ISO 75, Method A, HDT |
| Electrical Properties | ||
| Dielectric constant | 3.7 | IEC 60250 |
| Dissipation factor (50 Hz) | 0.02 | IEC 60250 |
| Volume resistivity | 10¹⁵ Ω·cm | DIN EN 62631-3-1 |
| Surface resistivity | 10¹³ Ω | DIN EN 62631-3-2 |
| Dielectric strength | 20 kV/mm | IEC 60243 |
Frequently Asked Questions about Ertalon 6 PLA
1What is Ertalon 6 PLA?+
Ertalon 6 PLA is a registered trade name for cast polyamide 6 (cast nylon, PA 6 G). Chemically it is the same polyamide 6 as extruded PA 6 - the difference lies in the manufacturing process: Ertalon is polymerised directly in the mould by anionic polymerisation, producing a more highly crystalline, lower-stress material with more uniform properties, especially in large cross-sections.
2How does Liedtke machine Ertalon 6 PLA?+
Ertalon machines well - turning, milling, drilling and sawing produce clean results with good surface finish. Because of moisture absorption and thermal expansion, we account for swelling and shrinkage behaviour at tight tolerances and condition the semi-finished product if required.
3What determines the price of an Ertalon 6 PLA part?+
Cast polyamide such as Ertalon is priced higher than extruded PA 6, since the casting process is more elaborate and delivers larger, lower-stress semi-finished products. The component price is determined mainly by the shape and dimensions of the semi-finished product, material utilisation, machining effort and batch size. We are happy to provide binding prices on request based on your drawing.
4When is Ertalon 6 PLA not the right choice?+
For the highest dimensional stability under fluctuating humidity, POM is often the better choice. For continuous contact with hot water/steam or strong acids, continuous use above approx. 110 °C, flame-retardancy requirements, or very high chemical requirements, PVDF, PPS or PEEK are more suitable. For small standard parts, extruded PA 6 is usually more economical.
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