Evonik VESTAKEEP® L 4000 G PEEK

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Evonik VESTAKEEP® L 4000 G PEEK
Categories:	Polymer; Thermoplastic; Polyketone; Polyetheretherketone (PEEK); Polyetheretherketone, PEEK, Unreinforced
Material Notes:	VESTAKEEP® L 4000 G 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 of low flammability. VESTAKEEP® L 4000 G can be processed by common machines for thermoplastics. The additional lubrication agent improves the feeding process. The manufacturer recommends a melt temperature between 370°C and 380°C during the injection molding process. The mold temperature should be within a range of 160°C to 200°C, preferably 180°C. VESTAKEEP® L 4000 G is supplied as granules in 25 kg boxes with moisture-proof polyethylene liners. Inside the original and undamaged packaging, the product has a shelf life of at least 2 years when stored in dry rooms at temperatures not exceeding 30°C. Pigmentation may affect values. Dry properties listed below Industrial Sector: Automotive and Mobility, Energy, Oil and Gas Processing: Injection molding, Extrusion Delivery form: Pellets, Granules Conformity: Food contact Additives: Unfilled Applications: Electrical and Electronical Processing: Film extrusion, Profile extrusion 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	Original Value	Comments

Density	1.30 g/cc	ISO 1183
Water Absorption	0.500 %	Sim to ISO 62
Moisture Absorption	0.300 %	Sim to ISO 62
Linear Mold Shrinkage, Flow	0.00900 cm/cm	ISO 294-4, 2577
Linear Mold Shrinkage, Transverse	0.0110 cm/cm	ISO 294-4, 2577
Melt Flow	12.0 g/10 min @Load 5.00 kg, Temperature 380 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Hardness, Shore D	87.0 @Time 1.00 sec	annealed; ASTM D2240
Tensile Strength at Break	89.6 MPa	var. test speed; ASTM D638
Tensile Strength	96.0 MPa	ISO 527
Tensile Strength, Yield	94.0 MPa	ISO 527
	96.5 MPa	var. test speed; ASTM D638
	100 MPa	annealed; ASTM D638
	20.0 MPa @Strain 0.500 %
	60.0 MPa @Strain 2.00 %
	80.0 MPa @Strain 3.00 %
	90.0 MPa @Strain 4.00 %
Elongation at Break	30.0 %	Nominal; ISO 527
	40.0 %	annealed, Nominal; ASTM D638
	75.0 %	var. test speed, Nominal; ASTM D638
Elongation at Yield	5.00 %	ISO 527
	6.40 %	annealed; ASTM D638
	6.50 %	var. test speed; ASTM D638
Tensile Modulus	3600 MPa	ISO 527
	4067.9 MPa	annealed; ASTM D638
	4070 MPa	var. test speed; ASTM D638
Flexural Strength	114 MPa	at conv. Deflection; ISO 178
	148 MPa	ISO 178
	179 MPa	annealed; ASTM D790
	165 MPa @Strain 5.00 %	annealed; ASTM D790
Flexural Modulus	3450 MPa	ISO 178
	3690 MPa	annealed; ASTM D790
Flexural Strain at Break	7.00 %	at flexural strength; ISO 178
Secant Modulus	2200 GPa @Strain 4.00 %
	3000 GPa @Strain 2.00 %
	3500 GPa @Strain 0.600 %
Charpy Impact Unnotched	NB @Temperature 23.0 °C	ISO 179/1eU
	NB @Temperature -30.0 °C	ISO 179/1eU
Charpy Impact, Notched	6.00 kJ/m² @Temperature -30.0 °C	Type of failure: C; ISO 179/1eA
	7.00 kJ/m² @Temperature 23.0 °C	Type of failure: C; ISO 179/1eA

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+13 ohm-cm	?V; IEC 62631-3-1
Surface Resistance	1.00e+15 ohm	IEC 62631-3-2
Dielectric Constant	2.80 @Frequency 100 Hz	IEC 62631-2-1
	2.80 @Frequency 1.00e+6 Hz	IEC 62631-2-1
Dissipation Factor	0.00500 @Frequency 1.00e+6 Hz	IEC 62631-2-1
Comparative Tracking Index	200 V	test solution A, 50 drops value; IEC 60112
Hot Wire Ignition, HWI	60.0 - 119 sec @Thickness 3.20 mm	IEC 60695-2-20

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	60.0 µm/m-°C @Temperature 25.0 - 55.0 °C	ISO 11359-1/-2
Melting Point	340 °C	ISO 11357-1/-3
Deflection Temperature at 0.46 MPa (66 psi)	205 °C	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	155 °C	ISO 75-1/-2
Vicat Softening Point	305 °C @Load 5.10 kg	50 K/h; ISO 306
	335 °C @Load 1.02 kg	50 K/h; ISO 306
Flammability, UL94	V-0 @Thickness 1.60 mm
	V-0 @Thickness 3.20 mm
Oxygen Index	38.0 %	ISO 4589-1/-2
	38.0 %	ASTM D2863

Processing Properties	Original Value	Comments
Melt Temperature	380 °C	Injection Molding; ISO 294
Mold Temperature	180 °C	Injection Molding; ISO 294
Injection Velocity	200 mm/sec	Injection Molding; ISO 294
Hold Pressure	120 MPa	Injection Molding; ISO 294

Descriptive Properties
Flexural stress at break	N	MPa, ISO 178
	N	%, ISO 178

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PEVONIK7876 / 325008

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