Another great graphic from Compound Interest:
So a gold medal is a silver medal with gold plating? And more surprising, the bronze medal is really brass.
|Properties||Higher malleability than zinc or copper. Low melting point (900 c); flows when melted. Combinations of iron, aluminum, silicon & manganese make brass corrosion resistant. Susceptible to stress cracking when exposed to ammonia. Not as hard as steel.||Hard and brittle. Melts at 950 centigrade but depends on amount of tin present. Bronze resists corrosion (especially seawater corrosion) and metal fatigue more than steel and is also a better conductor of heat and electricity than most steels.|
|Composition||Brass is any alloy of copper and zinc.||Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive, but sometimes with other elements such as phosphorus, manganese, aluminum, or silicon.|
|Color||Muted yellow, somewhat similar to gold, but duller.||Reddish brown.|
|Uses||Decorative; Low-friction applications (locks, gears, doorknobs, ammunition, valves); Plumbing/electronics; Musical instruments for acoustic properties; Zippers & uses where it’s important to negate spark(fittings & tools around explosive gas).||Used in boat and ship fittings, propellers and submerged bearings because of resistance to salt water corrosion. Widely used for cast bronze sculpture; Bearings, clips, electrical connectors and springs; For top-quality bells and cymbals.|
|History||Brass was first known to exist in about 500 BC.||Bronze dates to about 3500 BC.|