Screw Jacks "Gold"
Screw Jacks "Gold" – For Extreme Environmental and Operational Conditions
The shiny casing, mounting flange and cover indicate the highest degree of
corrosion resistance. In simple terms, the conventional aluminum components
as well as the external parts have been replaced by components made of the
aluminum bronze material CuAl10Fe5Ni5. All the spindles and shafts as well
as the internal elements are manufactured from stainless steel or synthetic
The CuAl10Fe5Ni5 material
High corrosion stability combined with a high degree of wearing resistance and cavitation protection through CuAl10Fe5Ni5
Resistance against mechanical damages due to an oxide protection film (basically Al203) that immediately forms on the material surface
Excellent performance in applications with gases, fluids and solid materials
Areas of Application
features high scaling resistance (up to 800°)
has a lower degree of corrosion resistance to strongly acidic media with high oxidation potential (such as nitric acid) as well as alkaline materials, because these will dissolve the oxide coating and prevent its formation.
has a lower tendency to selective corrosion (dealumination)
Screw jacks of this design may be used for instance in industrial applications
in the vicinity of saline water or sulfuric oxide, in slightly oxidizing and weak
alkaline areas, in brackish water, in organic acids (acetate) and in reducing
as well as slightly oxidizing mineral acids (diluted hydrochloric, hydrofluoric
or phosphoric acid), in environments containing sulfuric acid at room temperature
or at elevated temperatures.