Basic Pig Iron Specification: Si 1, 50 % max. P 0, 15 % max. C 3, 50 4, 50 % Mn 1, 00 % max S 0, 05 % max. Other elements: traces only Foundry Pig Iron Specification: Si 1, 50 2, 0 % max. P 0, 15 % max. C 3, 50 4, 50 % Mn 0, 40 - 0, 90% max S 0, 04 % max. Other elements: traces only Nodular Pig Iron Specification: C 3. 50 4. 50 % Si 0. 5 % max. P 0. 05 % max. Mn 0. 05% max S 0. 02 % max. Other elements: traces only