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The subject of this article is only available in a beta version of RuneScape.
Information about the subject may change over time, and may not be accurate after the beta period. For further details, see our future content policy.
For the heat mechanic in the desert, see desert heat.

Heat is the mechanic which affects Smithing in the Mining and Smithing beta, affecting the forging and processing abilities. When first started in progress smithing objects start with 60 heat before any further heating in the Forge.

The amount of heat each item can hold is dependent on the player's Smithing and Firemaking level and with 99 in both skills the maximum amount of heat is 894. Visible boosts also apply. The exact formula is as follows:

MaximumHeat = 300 + 3x Smithing level + 3x Firemaking level

For reheating an item in the Forge the amount of heat per tick is also dependent on the player's Smithing and Firemaking level and with 99 in both skills the amount of heat gained per tick is 150. Visible boosts also apply. The exact formula is as follows:

Heat per tick = 50 + Floor(1/2 Smithing level + 1/2 Firemaking level)

The Progress needed to smith an item is dependend on the tier and amount of the bar used and the upgrade tier of the item.

Bar Progress Base [a 1] Progress +1 Progress +2 Progress +3 Progress +4 Progress +5 Progress Decorated[a 2]
Bronze bar 100 N/A N/A N/A N/A N/A N/A
Iron bar 200 160 N/A N/A N/A N/A N/A
Steel bar 300 240 N/A N/A N/A N/A N/A
Mithril bar 400 320 400 N/A N/A N/A N/A
Adamant bar 500 400 500 N/A N/A N/A N/A
Rune bar 600 480 600 720 N/A N/A 480
Drakolith bar 700 560 700 840 N/A N/A 560
Necronium bar 800 640 800 960 1120 N/A 640
Bane bar 900 720 900 1080 1260 N/A 720
Elder rune bar 1000 800 1000 1200 1400 1600 800
  1. ^ All numbers are the progress for one bar
  2. ^ The progress required is equal to the progress beede to smith the item.

While each swing depletes the remaining heat by 10 the progress gained depends on the remaining heat of the item.

Heat Progress multiplier
High heat (>66%) 2x
Medium heat (>33%) 1.5x
Low heat (>0%) 1x
No heat (0%) No progress
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