Materials selection

Different environments demand different materials. Ostberg offers materials that are suitable for most environments.

Low to normal corrosion risk

Galvanized or Aluzinc coated sheet steel is usually used in areas with low to normal corrosion risk. Frames are made from aluminium. All of our rotor materials are ideally suited for their purposes. All bearings are life-time lubricated and sealed for extended life.

High corrosion risk

Great care should be taken when choosing materials in areas where there is a high risk of corrosion such as industrial use. All casing parts can be powder coated to enhance corrosion resistance, or a stainless steel casing can be selected. All bearings are life-time lubricated and extra sealed for extended life. Vital parts such as bearing components are coated with tectyl for enhanced corrosion resistance.

Epoxy-coated foil (STC1-O) should be selected. Epoxy-coated foil provides extremely effective protection against corrosion. Seawater-resistant foil (AK-O) with magnesium content is available; an alternative to epoxy-coated foil, it provides excellent corrosion protection.

Marine ventilation

In maritime environment there’s a request of increased corrosion protection, both for parts and media.Ostbergs standard marine option is casing in Powder coated Galvanized steel and rotor media in HM1-O for sorption performance and AK1 for sensible performance. Ostberg standard marine application have passed SWAAT test with non-corrosion for a period of 10 years. If the Ostberg the demand for higher corrosion resistance is needed the casing is offered in stainless steel.