Brass vs Bronze

Brass and bronze are both copper alloys, which is why shoppers and even sellers confuse them. The core difference is what is mixed with the copper: zinc for brass, and usually tin for bronze. That mix changes color, hardness, how easily the metal is machined and how it holds up outdoors.

The names are not perfectly clean. Some modern bronzes replace tin with aluminum, manganese or zinc, and statuary bronze often contains zinc and lead, which makes it technically a brass. When a product label matters, such as for marine hardware, ask for the alloy number rather than the common name.

Brass vs Bronze side by side

Last verified October 2026. Typical values; individual animals, products and local prices vary.

Which one fits you

Brass

• You are making door hardware, lamps, or decorative trim and want a bright golden finish.
• The part will be machined, drilled or shaped a lot and should cut cleanly.
• It is a plumbing fitting or instrument and low friction matters more than extreme wear.
• You want a more malleable metal that is easy to form.

Bronze

• The part sits in salt water, such as a propeller, bearing or boat fitting.
• It must resist wear under load, as in a bushing, gear or spring.
• You want a bell, cymbal or cast sculpture with a rich, resonant tone.
• You prefer a darker, golden-brown look that ages with a protective patina.

How this works

This page compares the two alloys on composition, color, melting range, hardness, corrosion and typical uses, using encyclopedia entries on each metal. The quiz turns those traits into five questions about your intended use, environment and finish, and each answer carries a short reason so you can judge it.

Real products vary widely, because dozens of brasses and bronzes exist, and some bronzes contain zinc. The quiz gives a starting direction only. Check the alloy specification, or ask a supplier, before you order parts for structural, marine or drinking-water use.

Where these numbers come from

The figures and defaults on this page are based on:

• Wikipedia: Brass, Brass composition, color, melting range, uses, corrosion and lead content (checked October 2026)
• Wikipedia: Bronze, Bronze composition, melting point, hardness, marine uses and corrosion (checked October 2026)
• Britannica: Bronze, Bronze copper and tin ranges and statuary bronze being a brass (checked October 2026)

General materials guide. Verify the exact alloy and any lead content for plumbing, marine or structural use.