High-density polyethylene or HDPE is a commonly used petroleum thermoplastic and the most used of the three polyethylenes for a wide range of applications. If you look at this plastic under a microscope, you would see that it has a linear structure with few branches lending to its optimal strength/density ratio.
Description
Specification
Hardness: abrasion resistant and will resist scratching. Strength: high tensile and stiffness for machine parts and tank applications. Ductility: stress crack resistant. Machinable: easy to machine with conventional tools.