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VESTAKEEP® M4G

Polyetheretherketone

Supplied by Evonik Degussa GmbH

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Product Description
Medical grade; high-viscosity, unreinforced polyether ether ketone

VESTAKEEP M4G is a high-viscosity, unreinforced polyether ether ketone for injection molding and extrusion. The semi-crystalline polymer features superior thermal and chemical resistance. Parts made from VESTAKEEP M4G are self-extinguishing.

VESTAKEEP M4G can be processed by common machines for thermoplastics. We recommend a melt temperature between 698°F and 716°F during the injection molding process. The mold temperature should be within a range of 320°F to 392°F, preferably 356°F.

VESTAKEEP M4G fulfils the following requirements to meet the demands for medical applications:

United States Pharmacopoeia Testing: <88> "Biological Reactivity Testing In Vivo" Class VI:
  • Acute Systemic Toxicity test: 4 different extraction media (158°F/24h)
  • Irritation Test - Intracutaneous Injection test: 4 different extraction media (158°F/24h)
  • Implantation Test: In Vivo-Implantation test: intramuscular, 7 days

Biocompatibility testing:
  • United States Pharmacopoeia Testing : n<87> "Biological Reactivity Testing InnVitro"
  • Cytotoxicity Test: L929 MEM elution, according to ISO 10993-5 (99°F/24h)
General  
Material Status 
  • Commercial: Active
Availability 
  • Europe
  • North America
  
Features 
  • Good Chemical Resistance
  • Medium Viscosity
  • Self Extinguishing
  • Semi Crystalline
  
Agency Ratings 
 
Forms 
  • Granules
Processing Method 
  • Injection Molding
Physical
Nominal Value
Unit
Test Method
Density
g/cm³
 ISO 1183
Melt Volume-Flow Rate (MVR) (380°C/5.0 kg)
in³/10min
 ISO 1133
Molding Shrinkage 2
     ISO 294-4
Across Flow: 356°F, 0.0800 in
%
  
Flow: 356°F, 0.0800 in
%
  
Mechanical
Nominal Value
Unit
Test Method
Tensile Modulus
psi
 ISO 527-2
Tensile Stress (Yield)
psi
 ISO 527-2
Tensile Strain
     ISO 527-2
Yield
%
  
Break
%
  
Flexural Modulus
psi
 ISO 178
Flexural Strength
psi
 ISO 178
Impact
Nominal Value
Unit
Test Method
Charpy Unnotched Impact Strength
     ISO 179/1eU
-22°F
 
  
73°F
 
  
Notched Izod Impact
     ASTM D256A
-22°F
ft·lb/in
  
73°F
ft·lb/in
  
Thermal
Nominal Value
Unit
Test Method
Vicat Softening Temperature
      
--
°F
 ISO 306/A
--
°F
 ISO 306/B
Melting Temperature 3
°F
 ISO 11357-3
CLTE - Flow (73 to 131°F)
in/in/°F
 ISO 11359-2
Electrical
Nominal Value
Unit
Test Method
Surface Resistivity
ohm
 IEC 60093
Volume Resistivity
ohm·cm
 IEC 60093
Relative Permittivity
     IEC 60250
50 Hz
 
  
1 MHz
 
  
Electric Strength 4
V/mil
 IEC 60243-1
Flammability
Nominal Value
Unit
Test Method
Flame Rating - UL (0.0600 in)
 
 UL 94
Glow Wire Flammability Index (0.0800 in)
°F
 IEC 60695-2-12
Glow Wire Ignition Temperature (0.0800 in)
°F
 IEC 60695-2-13
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: VESTAKEEP® M4G, VESTAKEEP M4G, VESTAKEEP® , VESTAKEEP, VESTAKEEPM4G, M 4 G, M4G, M4, 4G, Polyetheretherketone, PEEK, Polyaryletherketone, PAEK, Evonik Degussa, 4M
Features
Features may also be described by the following terms: Medium Viscosity, Semi-Crystalline, Good Chemical Resistance, Chemical Resistant, Self Extinguishing, Self-Extinguishing.
Agency Ratings
This plastic material has 2 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): USP (1), ISO (1).
Injection
Nominal Value
Unit
 
Processing (Melt) Temp
°F
  
Mold Temperature
°F
  
Notes
1Typical properties: these are not to be construed as specifications.
2determined on 2 mm sheets with film gate at rim mold temperature 180°C
32nd heating
4K20/P50
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.