High Density Polyethylene, or HDPE is highly cost effective, as it can be manufactured at low temperatures. Despite this it has a fairly high melting point of 140 degrees Celsius. It is a stiff material with good low temperature resistance, as well as having good resistance to most solvents. It is also resistant to most alcohols, low concentration acids and bases, and most oils and greases. It lacks a high level of resistance to hydrocarbons. It is also susceptible to stress cracking and is less stiff than polypropylene.

HDPE is most commonly used in packaging, such as crates, cartons, and industrial containers and cans for bulk usage. It has high tensile strength, making it useful in ropes and nets, and it is also used in consumer goods, such as bins, homeware, and toys. It can also be used in pipes, cables, and wiring.