Evonik VESTAKEEP® i4 G PEEK

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Evonik VESTAKEEP® i4 G PEEK
Categories:	Polymer; Thermoplastic; Polyketone; Polyetheretherketone (PEEK); Polyetheretherketone, PEEK, Unreinforced
Material Notes:	VESTAKEEP® i4 G is a natural colored, high viscosity polyether ether ketone (PEEK) that is especially designed for long term implantable medical devices. This grade is often used for extrusion processing technologies. Dry properties listed below Industrial Sector: Medical Devices Processing: Injection molding, Extrusion Delivery form: Pellets, Granules Resistance to: Heat (thermal stability), Hydrolysis / hot water, Wear / abrasion, Fatigue resistance, Oil / fuels Conformity: Biocompatibility, Medical application Additives: Unfilled Special Characteristics: Semi-crystalline Regulatory: US Pharmacopeia Class VI conformity Color: Natural color Chemical Resistance: Acid resistance, Alkali resistance, Solvent resistance, Grease resistance, Hydrolytically stable, Oil resistance, Oxidation resistance, General chemical resistance 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
Water Absorption	0.400 %	0.400 %	Sim to ISO 62
Moisture Absorption	0.120 %	0.120 %	Sim to ISO 62
Linear Mold Shrinkage, Flow	0.00900 cm/cm	0.00900 in/in	ISO 294-4, 2577
Linear Mold Shrinkage, Transverse	0.0110 cm/cm	0.0110 in/in	ISO 294-4, 2577
Melt Flow	7.00 g/10 min @Load 5.00 kg, Temperature 380 °C	7.00 g/10 min @Load 11.0 lb, Temperature 716 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	77.0 MPa	11200 psi	ISO 527
Tensile Strength	95.0 MPa	13800 psi	ISO 527
Tensile Strength, Yield	95.0 MPa	13800 psi	ISO 527
Elongation at Break	34.0 %	34.0 %	Nominal; ISO 527
Elongation at Yield	5.00 %	5.00 %	ISO 527
Tensile Modulus	3.50 GPa	508 ksi	ISO 527
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	0.800 J/cm² @Temperature -30.0 °C	3.81 ft-lb/in² @Temperature -22.0 °F	Type of failure: C; ISO 179/1eA
	0.950 J/cm² @Temperature 23.0 °C	4.52 ft-lb/in² @Temperature 73.4 °F	Type of failure: C; ISO 179/1eA

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	60.0 µm/m-°C @Temperature 25.0 - 55.0 °C	33.3 µin/in-°F @Temperature 77.0 - 131 °F	ISO 11359-1/-2
Melting Point	338 °C	640 °F	ISO 11357-1/-3
Deflection Temperature at 0.46 MPa (66 psi)	205 °C	401 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	150 °C	302 °F	ISO 75-1/-2
Vicat Softening Point	305 °C @Load 5.10 kg	581 °F @Load 11.2 lb	50 K/h; ISO 306
	335 °C @Load 1.02 kg	635 °F @Load 2.25 lb	50 K/h; ISO 306
Glass Transition Temp, Tg	145 °C	293 °F	2nd heating, onset; ISO 11357
	153 °C	307 °F	ISO 11357-1/-2
	155 °C	311 °F	2nd heating, midpoint; ISO 11357
Oxygen Index	36.0 %	36.0 %	ISO 4589-1/-2
	36.0 %	36.0 %	ASTM D2863

Processing Properties	Metric	English	Comments
Melt Temperature	380 °C	716 °F	Injection Molding; ISO 294
	380 °C	716 °F
Mold Temperature	180 °C	356 °F	Injection Molding; ISO 294
	180 °C	356 °F
Injection Velocity	200 mm/sec	7.87 in/sec	Injection Molding; ISO 294

Descriptive Properties
Color	Natural Color

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PEVONIK7867 / 324999

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