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How To Distinguish The Copper Wire Structure Of USB Cable?
Apr 12, 2018

Today, we teach you how to distinguish the copper wire structure of the USB cable, you can distinguish the copper wire is pure copper wire, copper clad aluminum, aluminum wire, copper clad steel wire, why should distinguish, because each material is different Natural prices are not the same, there is also the performance is not the same, each material can make the USB cable changes.

Method one: scraping with a tool

Tinned copper wire appears yellow after scratching, which is copper. The oxygen-free bare copper wire is still the primary color and is copper after scratching. Copper-clad aluminum and copper-clad aluminum-magnesium-aluminum appear white in snow. Or you can get the same effect by rubbing the wire on the concrete floor. Copper clad steel wire can also have this method or use magnets to identify.

Method Two: Look at the section

Because the thicker wires use copper clad aluminum, it is easy to see. So generally copper clad aluminum is a soft wire, and there are many small filaments composed of multiple strands. However, as long as you cut the cross section and look white (aluminum color), you can identify what material it is.

Method 3: Burning

Only need to use a lighter to burn, to see the phenomenon of burning and the results after burning, copper clad aluminum and copper clad aluminum magnesium wire, when the flame comes into contact with the wire, the conductor will droop straight, not easy to burn, after burning, the conductor color is Gray or darker; because aluminum has a lower melting point than copper. The difference is that the copper-clad aluminum conductor will break with the fingers once it is burned. It is brittle and breaks into several sections. If an oxygen-free bare copper wire forms a bead of copper wire after burning, the result will be different if the copper wire is not burned. The filament will melt and the thick wire will be the same.