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v0.31:Magma-safe
| This article is about an older version of DF. |
Magma-safe materials are materials which will not melt or burn when in close contact with magma. Most frequently, this comes into play when using floodgates operated by mechanisms.
In order to construct mechanisms from a magma-safe stone, simply ensure that they are the closest available stone to your mechanic, ideally by placing a restricted stockpile around your mechanic's workshop.
When linking a trigger to an object, the first mechanism selected is attached to the object, and the second is attached to the trigger. Unless the trigger itself will be submerged in magma (as could be the case with a pressure plate), only the first mechanism (attached to the object that will be submerged) need be magma-safe. If you do not have any magma-safe stones available, you can also work around floodgate-based flow control by using screw pumps to pump the magma over wall-barriers, or using water to form obsidian to plug flows and channel through them to reopen them (necessity and invention and all that).
Constructions that resist magma are:
- Constructions (Wall, Floor, Ramp, and Stairs) of any material can never melt or burn - there is nothing wrong with a wooden magma reservoir. Natural (but not constructed) ice walls/floors/ramps/stairs may melt however.
- Fortifications will allow the passage of magma, but not the assorted magma creatures. Fire snakes are vermin, so they can spawn anywhere near their native biome - the magma pipe/pool. They are not affected by fortifications, grates, or even solid walls. Also, there is a bug with fluids which may sometimes let magma (and water) push living things through barriers such as fortifications, bars and grates. Pumps are a positive defense, but can change the dynamics of fluid pressure.
- If not submerged (that is, not opened to let magma flow over/past/around them), doors, floodgates, and raised bridges (provided that there is no magma on the space the bridge would occupy when lowered) of non-magma-safe stone or metal are safe. So long as they are just in contact with magma, only acting as a passive "wall", they are fine. If opened, they will melt.
- Raised drawbridges have a notable exception, in that allowing magma to flow over the area that the bridge would normally occupy when lowered will cause the bridge's components to heat up and potentially melt.
- All parts of a pump, except for the passable tile, provided that none of the components are made of wood.
Game calculations
In the game, magma's temperature is exactly 2,032°F, or about 1,111°C. This is also 12,000° Urist.[Verify]
Metal:
- Pig iron — 2138°F (1170°C, 12106°U)
- Nickel and nickel silver — 2651°F (1455°C, 12619°U)
- Steel — 2750°F (1510°C, 12718°U)
- Iron — 2800°F (1538°C, 12768°U)
- Platinum — 3214°F (1768°C, 13182°U)
- Adamantine — 15032°F (8333°C, 25000°U)
Stone:
- Galena - ?°F (?°C, 12005°U)
- Cassiterite - ?°F (?°C, 12025°U)
- Pitchblende — ?°F (?°C, 12070°U)
- Sandstone - ?°F (?°C, 12070°U)
- Basalt - ?°F (?°C, 12160°U)
- Gabbro - ?°F (?°C, 12160°U)
- Orthoclase — ?°F (?°C, 12250°U)
- Mica — ?°F (?°C, 12295°U)
- Ilmenite — ?°F (?°C, 12457°U)
- Anhydrite — ?°F (?°C, 12610°U)
- Talc — ?°F (?°C, 12700°U)
- Hematite - ?°F (?°C, 12736°U)
- Magnetite — ?°F (?°C, 12768°U)
- Calcite — ?°F (?°C, 12902°U)
- Petrified wood — ?°F (?°C, 12970°U)
- Quartzite - ?°F (?°C, 12970°U)
- Chert - ?°F (?°C, 13101°U)
- Kaolinite — ?°F (?°C, 13150°U)
- Olivine — ?°F (?°C, 13168°U)
- Native platinum — 3214°F (1768°C, 13182°U)
- Rutile — ?°F (?°C, 13285°U)
- Bauxite — 3632°F (2000°C, 13600°U)
- Obsidian - ?°F (?°C, 13600°U)
- Chromite — ?°F (?°C, 13645°U)
- Alunite — ?°F (?°C, 13690°U)
- Periclase — ?°F (?°C, 15040°U)
- Dolomite - ?°F (?°C, 16507°U)
- Raw adamantine — 15032°F (8333°C, 25000°U)
Leather:
Bones: