A steel bar is a bar of metal, refined through the Smithing skill by smelting an iron ore and 1 piece of coal in a furnace, requiring 20 Smithing and granting 3 Smithing experience.
A steel bar can be forged on an anvil to create steel weapons and armour, granting 75 Smithing experience per bar used. A list of steel items that can be smithed from steel bars and the Smithing levels required can be found on the Smithing tables.
Steel bars are commonly used to create cannonballs, ammunition consumed by dwarf multicannons. In order to create cannonballs players must be a member, have completed the Dwarf Cannon quest, possess an ammo mould, and have at least level 35 Smithing. Each steel bar smiths 4 cannonballs, granting 25.6 Smithing experience each bar consumed. Assuming items are bought and sold at current Grand Exchange values, 4 cannonballs have a value of 1,592 coins, profiting players 942 coins per steel bar.
Players commonly use steel bars to train the Smithing skill, despite being able to smith mithril bars or better, because it has the optimum traits of requiring only three ores, and provides a decent amount of experience. Smelting steel bars can be a very good non-members money-making method, depending on the price of the steel bar compared to its raw materials at the Grand Exchange. Based on current prices, the profit for making a single steel bar is 59 coins if all materials are bought and sold on the Grand Exchange. This method can be a profitable for Free-to-play Smithing training, profiting 3.37 coins each experience point earned.
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