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Steel vs. Aluminum Props

If you are in the market for a replacement prop (propeller) for your boat, there are many different options available. While this can make it difficult to make a final decision, it is important to understand which option is best for your needs and budget. The size, shape, and material of the prop all need to be considered to ensure optimal performance for your boat. When considering the material, aluminum and stainless-steel props tend to be the most popular choices. As leading providers of quality boat and motor parts, Bridgeview Marine has provided some information on steel vs. aluminum props to help you make an informed decision.

Stainless-Steel Props

Stainless steel propellers are designed to provide lasting durability and high performance in any environment. Though their blades are thin, they are resistant to flex under high loads. This allows them to maintain their shape and blade pitch at high speeds and trim angles. Their durability also protects them from damage when running through sand or mud bottoms, making them great for shallow water.

Though stainless-steel props are more durable than aluminum, they also cost more to purchase and repair if they are damaged. Stainless steel is also much heavier, meaning you will need a more powerful engine to handle a prop constructed from it.

Aluminum Props

Aluminum props are the most common due to their affordability, performance value, and reliability in nearly any situation. Many boaters choose aluminum propellers over stainless steel because they weigh less and are much easier to repair when damaged. This allows for the use of smaller engines, further reducing costs. Due to their lower cost, aluminum props are a great choice for purchase as a spare to be carried on board in the event of damage.

While aluminum props are suitable for most users, they can flex under extremely high RPMs and cause a drop in pitch. Their blades are also typically thicker than stainless steel, so they can cause more drag during operation. Aluminum props are not as durable as stainless steel, making them a poor choice for sand, mud, and shallow water.

For more information on propellers or for assistance choosing the best option for your boat, contact the team at Bridgeview Marine. Our experts can be reached through our online contact form and will be happy to assist you.

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