What is PEEK CF30 black?
PEEK CF30 black is a polyetheretherketone reinforced with 30 % carbon fibres. The carbon fibres give the already high-strength PEEK a considerably higher stiffness and strength, very low thermal expansion and a heat deflection temperature of up to 315 °C – combined with electrical conductivity and low weight.
Technical data
| Property | Value | Test method |
|---|---|---|
| General Properties | ||
| Density | 1.40 g/cm³ | DIN EN ISO 1183-1 |
| Water absorption | 0.140 % | DIN EN ISO 62 |
| Flammability (Thickness 3 mm / 6 mm) | V0/V0 | UL 94 |
| Mechanical Properties | ||
| Yield stress | 120 MPa | DIN EN ISO 527 |
| Elongation at break | 7 % | DIN EN ISO 527 |
| Tensile modulus of elasticity | 6,500 MPa | DIN EN ISO 527 |
| Ball indentation hardness | 310 MPa | DIN EN ISO 2039-1 |
| Shore hardness | 91 scale D | DIN EN ISO 868 |
| Thermal Properties | ||
| Melting temperature | 343 °C | ISO 11357-3 |
| Thermal conductivity | 0.92 W/(m·K) | DIN 52612-1 |
| Coefficient of linear thermal expansion | 25 ·10⁻⁶/K | DIN 53752 |
| Service temperature, long term | -20 to 250 °C | Average |
| Service temperature, short term (max.) | 310 °C | Average |
| Heat deflection temperature | 315 °C | DIN EN ISO 75, method A, HDT |
PEEK CF30 black vs. PEEK natural compared directly
| Property | PEEK CF30 black | PEEK natural |
|---|---|---|
| Density | 1.40 g/cm³ | 1.31 g/cm³ |
| Yield stress | 120 MPa | 110 MPa |
| Elongation at break | 7 % | 20 % |
| Tensile modulus of elasticity | 6,500 MPa | 4000 MPa |
| Shore hardness | 91 scale D | 88 scale D |
| Thermal conductivity | 0.92 W/(m·K) | 0.25 W/(m·K) |
| Coefficient of linear thermal expansion | 25 ·10⁻⁶/K | 50 ·10⁻⁶/K |
| Service temperature, long term | -20 to 250 °C | -60 to 250 °C |
| Heat deflection temperature | 315 °C | 152 °C |
PEEK CF30 black in detail
1What is PEEK CF30 black?+
PEEK CF30 black is a polyetheretherketone reinforced with 30 % carbon fibres. The carbon fibres give the already high-strength PEEK a considerably higher stiffness and strength, very low thermal expansion and a heat deflection temperature of up to 315 °C – combined with electrical conductivity and low weight. The fibres considerably increase tensile modulus and yield stress, raise the thermal conductivity and lower the coefficient of thermal expansion; the material remains mechanically highly loadable and dimensionally stable even above the glass transition temperature of 150 °C. Like all PEEK grades, the material is flame retardant (UL 94 V0), highly resistant to chemicals and hydrolysis, and radiation-resistant.
2How does Liedtke machine PEEK CF30 black?+
PEEK CF30 black can be machined using all conventional cutting methods; because of the high hardness, carbide tools with sharp cutting edges are recommended. Good cooling via chip removal remains important to avoid heat build-up and residual stresses in the part. For tight tolerances and thick-walled parts, we recommend intermediate annealing to relieve machining stresses; thanks to the low moisture absorption, no conditioning is required. Carbon-fibre-containing dust generated during machining is electrically conductive and must be extracted to avoid short circuits in machines and electronics.
3When should I choose PEEK CF30 black?+
PEEK CF30 black is used wherever maximum stiffness and dimensional stability at high temperatures together with electrical dissipation are required – for example in aerospace, mechanical engineering, the semiconductor industry and oil and gas:
- Structural parts and brackets for aerospace
- Wafer handling and process components
- Highly stressed sliding, bearing and sealing elements
4What determines the price of a PEEK CF30 black part?+
PEEK CF30 black is calculated individually based on drawing or sample. The part price is determined mainly by the semi-finished form and dimensions, material utilisation and offcuts, machining effort and batch size. We are happy to provide binding prices on request.
5When is PEEK CF30 black not the right choice?+
The limits of the material are equally important:
- Low elongation at break, more brittle than unfilled PEEK
- Carbon fibres are abrasive to tools
- Not generally declared for food contact (see FDA declaration)
- High material cost compared to engineering plastics
6Advantages and disadvantages of PEEK CF30 black+
An honest assessment:
- Advantage: Very high stiffness and strength, even at high temperatures
- Advantage: Very low thermal expansion, high dimensional stability
- Advantage: Continuous service up to 250 °C, HDT 315 °C
- Advantage: Electrically conductive, low density
- Disadvantage: Low elongation at break, more brittle than unfilled PEEK
- Disadvantage: Carbon fibres are abrasive to tools
- Disadvantage: Not generally declared for food contact (see FDA declaration)
- Disadvantage: High material cost compared to engineering plastics
Typical properties
- Very high stiffness and strength
- Electrically conductive
- Continuous service up to 250 °C
Typical industries
- Aerospace
- Mechanical Engineering
- Semiconductor Industry
- Oil & Gas
Downloads for PEEK CF30 black
Related materials
Request a quotation for your PEEK CF30 part
A drawing or a sample is enough. We calculate concretely and advise openly whether PEEK CF30 black is optimal for your application or an alternative makes more sense.
Send enquiry