Steel Plate

 is an alloy.

Obtaining

 * Crafted by a Miner (Lv. 100) from
 * 5 Coal
 * 25 Iron
 * 10 Tin
 * 10 Manganese
 * 5 Cobalt
 * 1 Aluminite
 * 1 Sulphur Pouch
 * 1 Mother of Pearl

Uses

 * Quest
 * Ice Hotel