Comparison
EVA Med VA Injection vs PEEK
A side-by-side comparison of Ethylene Vinyl Acetate (Medium VA) for Injection Molding and Polyether Ether Ketone.
Physical
Density
0.930-0.950 g/cm³
1.32 g/cm³
Water Absorption (24h)
<0.2 %
0.15 %
Transparency
Translucent to opaque
Opaque (amber)
Shrinkage
2-4 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.05-0.2 GPa
3.6 GPa
Tensile Strength
5-15 MPa
100 MPa
Elongation at Break
300-700 %
50 %
Impact Strength (Izod)
No Break
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-60 to -40 °C
143 °C
Melting Point
50-75 °C
343 °C
Continuous Service Temperature
40-50 °C
260 °C
Heat Deflection Temperature
10-20 °C
160 °C
Electrical
Dielectric Constant
2.3-2.8
3.2
Volume Resistivity
10¹³-10¹⁴ Ω⋅cm
10¹⁶ Ω·cm
Dielectric Strength
10-20 kV/mm
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Good resistance at room temp, swells in hot aromatic and chlorinated hydrocarbons
Excellent
UV Resistance
Poor (requires stabilization)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable
Recyclable (specialty)
Recycling Code
4 (PE-LD or PE-LLD)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg