However, other base metals held steady in thin trade.
Traders said sluggish demand from consuming industries amid a weak global trend mainly led to the decline in copper prices.
Meanwhile, copper for delivery in three months was little changed at USD 5,949.50 a metric tonne on the London Metal Exchange.
In the national capital, copper mixed scrap were down by Rs 2 to Rs 408 per kg.
Following are today's metal rates (in Rs per kg):
Zinc ingot Rs 116-122, Nickel plate (4x4) Rs 1,057-1,062, Gun metal scrap Rs 227, Bell metal scrap Rs 229, Copper mixed scrap Rs 408, Chadri deshi Rs 285.