Shares of Vedanta Ltd plunged 8.03 per cent, while Hindalco Industries tumbled 7.21 per cent on the BSE.
Among others, Jindal Steel & Power Ltd dipped 5.58 per cent, Coal India Ltd lost 5.53 per cent, National Aluminium Company was down 3.81 per cent, NMDC (3.01 per cent), Hindustan Zinc (2.91 per cent) and JSW Steel (2.12 per cent).
The BSE metal index fell by 4.37 per cent to close at 7,918.87.
Chinese woes of Indian steelmakers will increase further following the surprise devaluation of the yuan, as it will significantly curtail the domestic players' export competitiveness, a Care report said today.
China's central bank yesterday devalued its tightly controlled currency by close to 2 per cent to boost exports, amid a slowdown in the world's second-largest economy and the recent stock market crash.