Material and construction of propeller marine propellers are made from corrosion resistant materials as they are made operational directly in sea water which is a corrosion accelerator. the materials used for making marine propeller are alloy of aluminum and stainless steel.. Design & materials two of the most important factors that determine the quality of any propeller are design and materials. at ahoy propellers , we are focused on these crucial areas of the manufacturing process to ensure that our boat propellers are the best in the business.. The most common boat propellers today are made of composite-plastic, aluminum and stainless steel. here is a quick guide their physical properties, relative costs, maintenance, ideal usage and how they can affect boating performance..
Because the material of the aluminum – bronze propeller is much more resistant to cavitation then the acquisition costs of the maintenance of aluminum – bronze alloyed propellers are quite lower than that of manganese – bronze alloyed propellers.. For propeller shaft you need material with high torsional rigidity as well as material that can take a lot of fatigue . you can use alloy 303 or any low carbon steel with 10-18 % chromium and 5-8 % nickel.. What material is best? most outboards and ios are originally sold with aluminum props, which are inexpensive and repairable. inboards use three- and four-bladed props of bronze, or a nickel-bronze-aluminum alloy. replacement props for io or outboard boats are available in aluminum or stainless steel. these materials compare as follows:.
