What are the different grades of aluminum sheets and how do they affect their price?

Aluminum sheets are categorized into different grades based on their composition and properties. The most common grades include 1000 series (99% pure aluminum), 3000 series (aluminum-manganese alloys), 5000 series (aluminum-magnesium alloys), and 6000 series (aluminum-magnesium-silicate alloys). Each grade has unique characteristics affecting their applications, such as corrosion resistance, strength, and formability. The price of aluminum sheets varies with the grade due to differences in purity, alloying elements, production complexity, and market demand. Purity and the addition of alloying elements can increase the cost, while the availability and demand in the market also influence pricing. For instance, 1000 series sheets are generally cheaper due to their high purity and lack of alloying, while 6000 series sheets, known for their strength and durability, command a higher price.