tender for pig iron for foundry purpose to is: 13502/1992 (reaffirmed 2005) havingunder noted composition:- manganese : less than or equal to 1.0 silicon : less thanor equal to 2.25 phosphrous : less than or equal to 0.4 sulphur : 0.06 max. mass ofpig iron: 2.0 kg(min.) 12 kg (max) per piece: without notch .