What is PA 6 FG natural?
PA 6 FG natural is an extruded polyamide 6 in a compound specifically designed for food contact (FG = Food Grade). It combines the typical properties of PA 6 – high toughness, good sliding and wear properties – with a formulation intended for use in the food industry.
Technical data
| Property | Value | Test method |
|---|---|---|
| General Properties | ||
| Density | 1.14 g/cm³ | DIN EN ISO 1183-1 |
| Water absorption | 3.00 % | DIN EN ISO 62 |
| Flammability (thickness 3 mm / 6 mm) | HB/HB | UL 94 |
| Mechanical Properties | ||
| Yield stress | 80 MPa | DIN EN ISO 527 |
| Elongation at break | >50 % | DIN EN ISO 527 |
| Tensile modulus | 3,200 MPa | DIN EN ISO 527 |
| Notched impact strength | >3.0 kJ/m² | DIN EN ISO 179 |
| Ball indentation hardness | 170 MPa | DIN EN ISO 2039-1 |
| Shore hardness | 82 scale D | DIN EN ISO 868 |
| Thermal Properties | ||
| Melting temperature | 220 °C | ISO 11357-3 |
| Thermal conductivity | 0.23 W/(m·K) | DIN 52612-1 |
| Thermal capacity | 1.70 kJ/(kg·K) | DIN 52612 |
| Coefficient of linear thermal expansion | 90 ·10⁻⁶/K | DIN 53752 |
| Service temperature, long-term | -40 to 85 °C | Average |
| Service temperature, short-term (max.) | 160 °C | Average |
| Heat deflection temperature | 75 °C | DIN EN ISO 75, method A, HDT |
PA 6 FG natural in detail
1What is PA 6 FG natural?+
PA 6 FG natural is an extruded polyamide 6 in a compound specifically designed for food contact (FG = Food Grade). It combines the typical properties of PA 6 – high toughness, good sliding and wear properties – with a formulation intended for use in the food industry. PA 6 is a semi-crystalline engineering thermoplastic with high toughness, good abrasion and wear resistance, and very good sliding properties. The FG compound does not change this property profile but additionally ensures suitability for food contact. Like all polyamides, PA 6 FG absorbs moisture from the environment; this makes the material tougher and more impact-resistant, while stiffness and dimensional stability decrease somewhat.
2How does Liedtke machine PA 6 FG natural?+
PA 6 FG natural can be machined using all conventional cutting methods (sawing, turning, drilling, milling, planing, grinding). As an unreinforced material, HSS tools are sufficient; good cooling via chip removal is important to avoid softening or smearing of the surface caused by heat build-up. Because of moisture absorption and comparatively high thermal expansion, we take swelling and shrinkage behaviour into account for tight tolerances and condition the semi-finished product where required.
3When should I choose PA 6 FG natural?+
PA 6 FG natural is used wherever components may come into contact with food and, at the same time, toughness, wear resistance and good sliding properties are required, for example in food processing equipment and general mechanical engineering:
- Components in food processing
- Conveyor belt components and guide parts
- Plain bearings and bushings in packaging and processing machinery
4What determines the price of a PA 6 FG natural part?+
PA 6 FG natural is calculated individually based on drawing or sample. The part price is mainly determined by the stock form and dimension, material utilisation (waste), machining effort and batch size. We are happy to quote binding prices on request.
5When is PA 6 FG natural not the right choice?+
Just as important are the limits of the material:
- Moisture absorption of up to 3 % in standard atmosphere, causing dimensional and property changes
- Not resistant to strong acids and permanently hot water (hydrolysis)
6Advantages and disadvantages of PA 6 FG natural+
An honest assessment:
- Advantage: Formulation suitable for food contact
- Advantage: Tough, wear-resistant all-rounder
- Advantage: Good sliding properties
- Advantage: Good machinability
- Disadvantage: Moisture absorption of up to 3 % in standard atmosphere, causing dimensional and property changes
- Disadvantage: Not resistant to strong acids and permanently hot water (hydrolysis)
Typical properties
- Formulation suitable for food contact
- Tough, wear-resistant all-rounder
Typical industries
- Food Industry
- Mechanical Engineering
Downloads for PA 6 FG natural
Related materials
Request a quotation for your PA-6-FG part
A drawing or a sample is enough. We calculate concretely and advise openly whether PA 6 FG natural is optimal for your application or an alternative makes more sense.
Send enquiry