Commodity Plastics
HDPE Injection Molding — High-Density Polyethylene for Injection Molding
HDPE is known for its high strength-to-density ratio, excellent chemical resistance, and good impact strength even at low temperatures. It is widely used in injection molding for items like bottle caps, toys, housewares, and industrial containers.
HDPEMarlexNovalen
Manufacturers
3
Grades
3
Applications
5
Equivalents
2
Physical Properties
- Density
- 0.941-0.965 g/cm³
- Water Absorption (24h)
- <0.05 %
- Transparency
- Opaque
- Shrinkage
- 1.5-3 %
Mechanical Properties
- Young's Modulus
- 0.8-1.5 GPa
- Tensile Strength
- 20-35 MPa
- Elongation at Break
- 50-300 %
- Impact Strength (Izod)
- No Break
Thermal Properties
- Glass Transition Temperature
- -120 °C
- Melting Point
- 125-135 °C
- Continuous Service Temperature
- 80-100 °C
- Heat Deflection Temperature
- 50-65 °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
Injection moldingBlow moldingRotational molding
Applications
Bottle caps
Crates
Buckets
Toys
Housewares
Available grades
HDPE 5502HDPE HM5500HDPE F00572