Brass rods in ship and Marine engineering

The strong corrosiveness and high salt spray characteristics of the Marine environment impose strict requirements on the corrosion resistance of materials. Brass rods (especially naval brass, such as HSn70-1), due to their tin content, form a more stable oxide film on the surface, making them the preferred material for ship propellers, seawater pipes, and condenser tube sheets. For instance, the propeller of a certain type of fishing boat is cast from HSn70-1 brass, and its annual corrosion rate in seawater is only 0.02mm, which is much lower than the 0.5mm of ordinary carbon steel, significantly reducing maintenance costs.