Ek alloy dui nai to jaada chemical element ke mixture hae, jisme se ek metal hae. Kuchh khaas alloy hae: Brass jisme 35% zinc aur 65% copper hae. Stainless steel jisme 18% chromium, 80.6% iron, 1% nickel aur 0.4% carbon hae. Steel jisme 99% iron aur 1% carbon hae. Bronze jisme 87.5% copper aur 12.5% tin hae.