Bronze plaques are typically made from an alloy consisting mostly of copper and tin, while brass plaques are made from an alloy of copper and zinc. This difference in composition leads to variations in color, durability, and weight, with bronze generally being more robust and heavier, showcasing a classic reddish-brown appearance, whereas brass tends to have a lighter, more yellowish hue.
How does the durability of bronze compare to brass in plaques?
Bronze has superior resistance to corrosion, particularly when exposed to seawater or chlorides, making it a favorable material for outdoor use where weather conditions can be harsh. Brass, is more susceptible to corrosion over time, especially when exposed to high levels of moisture or certain chemicals, which can lead to surface “pitting” or tarnishing. While we do apply a protective clear coat on both brass and bronze, we typically recommend brass for indoors only.
Which material is suitable for outdoor versus indoor display?
For outdoor display, where harsh environmental factors come into play, bronze is generally the preferred choice due to its long-lasting durability and resistance to weathering. Brass plaques can be used outdoors but may require more maintenance to prevent corrosion. Again, we recommend brass for indoor use. For indoor display, both materials can be used effectively, as they are less likely to be subjected to corrosive factors.
How does the appearance of bronze and brass plaques change over time?
Bronze develops a natural patina over time—a thin layer that forms on the surface due to oxidation. This patina is often seen as a desirable feature, giving the plaque a distinguished, antiqued look. Brass, on the other hand, can tarnish and may need regular polishing to maintain its original sheen, especially if exposed to the elements.