Copolymer
The copolymer grade is the ideal combination of strength, stiffness and wear resistance. It absorbs very little moisture, is easily machinable and is genuinely porosity-free, making it the preferred grade for food contact and medical applications. The product exhibits an elevated resistance to hydrolysis, strong alkalis and thermal-oxidative degradation when compared to acetal homopolymer.
Key features
- High mechanical strength and rigidity
- High impact strength and creep resistance
- Excellent dimensional stability and machinability
- Low moisture absorption
- Good electrical insulating and dielectric properties
- No centreline porosity in copolymer grades
- Suitable for food contact
Properties
Property |
Unit of measure |
Value |
Tensile Strength | Mpa | 70 |
Elongation at Break | % | >15 |
Modulus of Elasticity | MPa | 2700 |
Impact Strength | kj/m² | 7.20 |
Compressive Strength | MPa | 110 |
Shear Strength | MPa | |
Shore Hardness | D Scale | 85 |
Co-efficient of Friction | μ | 0.25 |
Water Absorption @ 23 Deg C | % | 0.90 |
Service Temperature Intermittent | ᵒC | 140 |
Service Temperature Continuous | ᵒC | 90 |
Melting point | ᵒC | 170 |
Thermal Conductivity | W/m.ᵒC | 0.31 |
Dielectric Strength | kV/mm | 16.5 |
Volume Resistivity | Ω.cm | 10¹³ |
Surface Resistivity | Ω | 10¹³ |
Arc Resistance | Sec | |