The downside to copper-clad steel and copper alloys is that they have ______.

The downside to copper-clad steel and copper alloys is that they have ______.

• A. inferior current-carrying ability
• B. higher cost
• C. better flexibility
• D. lower temperature tolerance

Answer: (A)

When you use copper-clad steel or copper alloys, you gain strength, lower weight, and often reduced cost, but you trade off current-carrying ability. The steel core (or alloy portion) conducts far less efficiently than copper, so a conductor of the same overall size has less of the high-conductivity material carrying the current. This raises resistance and heat for a given current, reducing the ampacity compared with solid copper of the same overall dimensions. In short, these materials are used when mechanical properties and cost matter more than maximum current-carrying capacity. The other options aren’t the typical downside: they aren’t consistently more expensive, and they aren’t known for better flexibility or significantly different temperature tolerance.

When you use copper-clad steel or copper alloys, you gain strength, lower weight, and often reduced cost, but you trade off current-carrying ability. The steel core (or alloy portion) conducts far less efficiently than copper, so a conductor of the same overall size has less of the high-conductivity material carrying the current. This raises resistance and heat for a given current, reducing the ampacity compared with solid copper of the same overall dimensions. In short, these materials are used when mechanical properties and cost matter more than maximum current-carrying capacity. The other options aren’t the typical downside: they aren’t consistently more expensive, and they aren’t known for better flexibility or significantly different temperature tolerance.