Copper Grade and Aluminum Alloy Grade and the Effect of Purity on Price

There are two pieces of copper in front of you, both of which appear to be copper, but their prices are worlds apart. One is high-purity copper cathode, and the other is scrap copper. In non-ferrous metals, purity and grade are what determine the real price—not merely whether the metal is copper or aluminum.

Copper: From Cathode to Scrap

Copper cathode is the product of electrolytic refining, with a purity of around ۹۹.۹۹ percent, and is the basis for producing wire, pipe, and high-quality copper products. National Iranian Copper Industries Company produces this cathode alongside slabs, billets, and wire rods. In contrast, scrap or low-purity copper has a lower price and is not suitable for sensitive applications. Correctly distinguishing between these two is the first skill of a copper salesperson.

Copper cathode with a purity of around ۹۹.۹۹ percent is the reference for quality and price in the copper market.

Aluminum: Alloy Series

Unlike copper, aluminum is mostly used in the form of different alloys. The ۱۰۰۰ series is almost pure aluminum and is used for applications where conductivity and corrosion resistance are important; the ۶۰۰۰ series, alloyed with magnesium and silicon, is more suitable for structural applications and profiles. Knowing which series the customer wants prevents the sale of an unsuitable alloy.

Why This Distinction Is Your Profit and Reputation

If you sell scrap copper at the price of cathode, the customer will realize it after one transaction and lose trust in you. If you provide an unsuitable aluminum alloy for a structural application, the final product may develop problems. Accurate knowledge of the grade preserves both your profit and your long-term relationship with the customer.

One Final Point

For important transactions, requesting a certificate of analysis from the supplier is the least expensive way to ensure the actual grade. This simple request costs nothing but prevents many subsequent disputes.