Copper futures are widely traded on the London Metal Exchange (LME), at the COMEX and on the Multi-Commodity Exchange in India. The standard contract is 25,000 lbs. Copper is the third most widely used metal in the world. Base Metals: Lead, copper, zinc edge lower in futures trade on low demand | News. Lead prices fell by 50 paise to Rs 156.45 per kg in futures market on Monday. Base Metals: Nickel, aluminium futures trade lower on weak demand | News. Aluminium prices fell 0.15 per cent to Rs 135.10 per kg in futures trade on Friday. The most important trading venues for copper are the London Metal Exchange, New York Mercantile Exchange (COMEX), and the Shanghai Futures Exchange. Copper is soft, pliable, malleable, and conductive.