Traders said slackened demand from consuming industries mainly led to decline in copper prices.
Meanwhile, copper for delivery in three months fell 0.6 per cent to USD 5,109 a metric tonne on the London Metal Exchange.
In the national capital, copper mixed scrap were down by Rs 2 to Rs 362 per kg.
Following are today's metal rates (in Rs per kg):
Zinc ingot Rs 100-106, Nickel plate (4x4) Rs 915-920, Gun metal scrap Rs 227, Bell metal scrap Rs 229, Copper mixed scrap Rs 362, Chadri deshi Rs 285.