Commodity Plastics
MDPE Pipe Grade — Medium-Density Polyethylene Pipe Grade
MDPE balances the flexibility of LDPE with the rigidity of HDPE. It offers excellent environmental stress crack resistance (ESCR) and good impact strength, making it suitable for pipes, tanks, and some injection molded parts.
MDPEHostalenDuktape
Manufacturers
3
Grades
3
Applications
4
Equivalents
2
Physical Properties
- Density
- 0.930-0.940 g/cm³
- Water Absorption (24h)
- <0.05 %
- Transparency
- Opaque
- Shrinkage
- 2-4 %
Mechanical Properties
- Young's Modulus
- 0.4-0.7 GPa
- Tensile Strength
- 15-25 MPa
- Elongation at Break
- 150-400 %
- Impact Strength (Izod)
- No Break
Thermal Properties
- Glass Transition Temperature
- -120 °C
- Melting Point
- 118-128 °C
- Continuous Service Temperature
- 70-80 °C
- Heat Deflection Temperature
- 45-55 °C
Electrical Properties
- Dielectric Constant
- 2.25-2.35
- Volume Resistivity
- >10¹⁵ Ω⋅cm
- Dielectric Strength
- 15-25 kV/mm
Chemical Resistance
- Acids
- Excellent resistance
- Bases
- Excellent resistance
- Solvents
- Good resistance at room temperature, swells in hot aromatic hydrocarbons
- UV Resistance
- Poor (requires stabilization)
Sustainability
- Recyclability
- Recyclable
- Recycling Code
- 2 (PE-HD)
- Carbon Footprint
- Moderate
Manufacturing compatibility
Pipe extrusionBlow moldingInjection molding
Applications
Water pipes
Gas pipes
Liners
Industrial containers
Available grades
MDPE L490MDPE 5010MDPE R100