Evonik VESTAKEEP® L4000G PEEK

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Evonik VESTAKEEP® L4000G PEEK (discontinued **)
Categories:	Polymer; Thermoplastic; Polyketone; Polyetheretherketone (PEEK); Polyetheretherketone, PEEK, Unreinforced
Material Notes:	VESTAKEEP L4000G is a high-viscosity, unreinforced lubricated polyether ether ketone for injection molding and extrusion. The semi-crystalline polymer features superior thermal and chemical resistance. Parts made from VESTAKEEP L4000G are self extinguishing. VESTAKEEP L4000G can be processed by common machines for thermoplastics. The additional lubrication agent improves the feeding process. Information provided by Evonik
Vendors:	Ensinger TECAPEEK™ shapes are manufactured exclusively with Victrex™ PEEK polymer. The Ensinger process and Victrex resins ensure reliability, consistency, dimensional stability, and high temperature mechanical performance. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Metric	English	Comments

Density	1.30 g/cc	0.0470 lb/in³	ISO 1183
Linear Mold Shrinkage, Flow	0.0090 cm/cm	0.0090 in/in	determined on 2 mm sheets with film gate at rim mold temperature 180°C; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0011 cm/cm	0.0011 in/in	determined on 2 mm sheets with film gate at rim mold temperature 180°C; ISO 294-4
Melt Flow	12 g/10 min @Load 5.00 kg, Temperature 380 °C	12 g/10 min @Load 11.0 lb, Temperature 716 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	96.0 MPa	13900 psi	ISO 527-1
Elongation at Break	30 %	30 %	ISO 527-1
Elongation at Yield	5.0 %	5.0 %	ISO 527-1
Tensile Modulus	3.50 GPa	508 ksi	ISO 527-1
Charpy Impact Unnotched	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 179/1eU
	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 179/1eU
Charpy Impact, Notched	0.600 J/cm² @Temperature -30.0 °C	2.86 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eA
	0.700 J/cm² @Temperature 23.0 °C	3.33 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm	IEC 60093
Surface Resistance	1.00e+14 ohm	1.00e+14 ohm	IEC 60093
Dielectric Constant	2.8 @Frequency 50 Hz	2.8 @Frequency 50 Hz	IEC 60250
	2.8 @Frequency 1e+6 Hz	2.8 @Frequency 1e+6 Hz	IEC 60250
Dielectric Strength	16.0 kV/mm	406 kV/in	K20/P50; IEC 60243-1
Comparative Tracking Index	175 V	175 V	100 drops value; IEC 60112
	200 V	200 V	CTI; IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	60.0 µm/m-°C @Temperature 23.0 - 55.0 °C	33.3 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359
Melting Point	340 °C	644 °F	ISO 11357
Vicat Softening Point	305 °C @Load 5.10 kg	581 °F @Load 11.2 lb	Method B; ISO 306
	335 °C @Load 1.02 kg	635 °F @Load 2.25 lb	Method A; ISO 306
Flammability, UL94	V-0 @Thickness 3.20 mm	V-0 @Thickness 0.126 in	IEC60695
Glow Wire Ignition Temperature	850 °C @Thickness 2.00 mm	1560 °F @Thickness 0.0787 in	IEC 60695-2
Glow Wire Flammability Index	960 °C @Thickness 2.00 mm	1760 °F @Thickness 0.0787 in	IEC 60695-2

Processing Properties	Metric	English	Comments
Melt Temperature	370 - 380 °C	698 - 716 °F
Mold Temperature	160 - 200 °C	320 - 392 °F
	180 °C	356 °F	Preferred

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PEVONIL221 / 196425

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