High Density Polyethylene (HDPE) Boats

High Density Polyethylene (HDPE) Boats

What is HDPE?

HDPE is high density polyethylene plastic. Compared to other polyethylene plastics it is stronger and more rigid and tougher then LDPE (low density polyethylene). HDPE is lighter then water. It can be manufactured by means of using molding technologies or extrusion processes. Easily machined and can be constructed using special welding processes. It is hard to combine PE pieces using glue or some chemicals. Naturally looks like wax, lusterless and opaque. By means of UV additive, resistance to sun light and atmospheric conditions can be strengthened, which gives the plastic a black color. Suitable for food industry applications. Low density polyethylene (PE32) was developed at 1950s and used for water networks. Then higher density and stronger polyethylene of PE63 developed for gas networks and used for 4 bar internal pressure systems. Many designers and manufacturer companies noticed the flexibility of the material and made investments in the area. At the beginning of 1990s,PE80 and PE100 were developed. The very first applications with HDPE pipes were performed in USA and in Canada at 1960s and these first applications of PE are still working today without any problem. Polyethylene pipes are classified according to MRS (minimum required strength) of the raw material. MRS is the strength of material to the applied internal pressure at 20C temperature for 50 years long. And PE is classified as following according to that evaluation.

PE32: 3.2MRS
PE40: 4.0MRS
PE63: 6.3MRS
PE80: 8.0MRS
PE100: 10.0MRS

Main advantages and properties of polyethylene:

  • Resistant to aging. The lifespan of PE is assumed to be 50 years but the real life is longer than that.
  • Polyethylene is highly resistance to cracking.
  • Since PE materials are very elastic, it performs well in bad conditions.
  • Compared to steel, wood and aluminum, PE is lighter and easily constructed, giving the manufacturer flexibility in design.
  • Polyethylene can resist all kinds of environmental working conditions with its anti-corrosive property.
  • Impact strength is extremely high and it is not brittle at low temperatures.
  • Easy to clean and doesn’t keep dust on it.
  • Does not include toxic material.
  • High resistance to freezing. Freezing the liquid in which PE floating, does not have an effect on its material properties.
  • Polyethylene is non magnetic.
  • PE is more economical compared to steel, aluminum and wood.