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{{Quality|Superior|07:11, 17 May 2015 (UTC)}}
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{{Quality|Superior}}
 
 
{{av}}
 
{{av}}
 
{{Material properties}}
 
{{Material properties}}
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'''Density''' is a [[material]] property that, along with volume, affects the [[weight]]/mass of an object made from the [[material]].
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'''Density''' is a [[material]] property that, along with the volume of the object, affects the [[weight]] of an object made from the [[material]].
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Density influences weight, which influences how easily dwarves can carry things. Density affects the momentum of weapon attacks, but only so much; 600 density has 80% the momentum of something of infinite density, and all normal metals have significantly greater densities than this, meaning that you can usually ignore it for deciding which weapons are stronger. Density also affects fall damage. DF simulates falling by shooting the ground at you, so denser floors do more damage.
 
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Density in ''Dwarf Fortress'' is in units of kg/m<sup>3</sup>*.
 
  
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: ''(* For example, in the real world, the density of pure gold is 19.32 grams/cm<sup>3</sup>, which works out to be 19,320 kg/m<sup>3</sup>, the same numeric value as the density of DF [[gold]] (see table below).)''
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Density influences weight, and tests show that weight affects how much damage blunt-force [[weapon|weapons]] do. Additionally, lightweight edged weapons or attacking parts made of certain materials seem to have difficulty piercing tissue layers. Apparently, density in dwarf fortress is in kg/m<sup>3</sup>. Density also affects fall damage. DF simulates falling by shooting the ground at you, so denser floors do more damage.
 
== Density of some materials ==
 
== Density of some materials ==
  
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Note that not all forms of items are the same size, and so are not comparable when considering actual [[weight]] for practical applications, such as a [[Trap#Stone-fall_trap|door prize]]. A [[stone]] (including raw ore) has a size of 100,000 cm<sup>3</sup> and a [[log]] of wood 50,000 cm<sup>3</sup>, while a [[bar]] of metal ''(or a block of stone or wood)'' have a size of only 6,000 cm<sup>3</sup>, a difference of ~16.67:1 for stone vs. metals, or ~8.33:1 for wood vs. metals.  
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Note that not all forms of items are the same size, and so are not comparable when considering actual [[weight]] for practical applications, such as a [[Trap#Stone-fall_trap|door prize]]. A [[stone]] (including raw ore) has a size of 10,000 cm<sup>3</sup> and a [[log]] of wood 5,000 cm<sup>3</sup>, while a [[bar]] of metal ''(or a block of stone or wood)'' have a size of only 600 cm<sup>3</sup>, a difference of ~16.67:1 for vs. metals, or ~8.33:1 for wood vs. metals.  
  
 
<!-- TABLE NEEDS A NEW COLUMN TO REFLECT THIS. CURRENT DATA IS MISLEADING w/ REGARD TO WEIGHT IN PRACTICAL APPLICATIONS.-->
 
<!-- TABLE NEEDS A NEW COLUMN TO REFLECT THIS. CURRENT DATA IS MISLEADING w/ REGARD TO WEIGHT IN PRACTICAL APPLICATIONS.-->
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! Notes
 
! Notes
 
|-
 
|-
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|[[Feather tree]]||Wood||100||Least dense wood, found only in good biomes
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|[[Feather tree]]||Wood||100||Least dense wood, found only in dry, good biomes
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|-  
 
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|[[Papaya]]||Wood||130||Second least dense wood, found only in tropical biomes
 
 
|-    
 
|-    
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|[[Candlenut]]||Wood||140||Third least dense wood, found only in tropical biomes
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|[[Candlenut]]||Wood||140||Second least dense wood, found only in dry, tropical biomes
 
|-
 
|-
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|[[Adamantine]]||Metal||200||Least dense metal, light enough that it has much lower momentum in weapon attacks than others (about 57% for a normal dwarf)
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|[[Adamantine]]||Metal||200||Least dense metal
 
|-
 
|-
 
|[[Raw adamantine]]||Stone||200||Least dense stone
 
|[[Raw adamantine]]||Stone||200||Least dense stone
 
|-    
 
|-    
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|[[Kapok]]||Wood||260||Fourth least dense wood, found only in tropical biomes
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|[[Kapok]]||Wood||260||Third dense wood, found only in dry, tropical biomes
 
|-    
 
|-    
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|[[Willow]]||Wood||390||Fifth least dense wood, found near water, most widespread of "light" wood
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|[[Willow]]||Wood||390||Fourth lightest, found in "wet" biomes, most widespread of "light" wood
 
|-
 
|-
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||[[Bone]]||Organics||500||
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||[[Bone]]||Organics||500
 
|-
 
|-
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|[[Leather]]||Organics||500||
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|[[Leather]]||Organics||500
 
|-
 
|-
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|[[Silk]]||Organics||500||
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|[[Silk]]||Organics||500
 
|-
 
|-
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|[[Yarn]]||Organics||500||
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|[[Yarn]]||Organics||500
 
|-
 
|-
 
|[[Tunnel tube]]||Wood||500||Least dense [[underground]] wood, found only in caverns
 
|[[Tunnel tube]]||Wood||500||Least dense [[underground]] wood, found only in caverns
 
|-
 
|-
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|"typical" [[wood]]||Wood||600|| ''There are nearly about twenty varieties of wood at 600+/-20, about twenty (unlisted here) that weigh less,<br>and about twenty (unlisted here) that weigh more.  See [[Wood]] for a full list and discussion.''
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|"typical" [[wood]]||Wood||600|| ''There are about 4 dozen varieties of wood at 600, about a dozen (unlisted here) that weight less,<br>and a half-dozen (sim) that weigh more.  See [[Wood]] for a full list and discussion.''
 
|-
 
|-
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|[[Persimmon]]||Wood||835||Densest wood found in temperate biomes
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|[[Oak]]||Wood||700||Densest "common" wood, temperate/dry
 
|-
 
|-
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|[[Olive]]||Wood||990||Densest "normal" wood, found only in tropical biomes
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|[[Mangrove]]||Wood||830||Densest "normal" wood, found only in wet swamp biomes
 
|-
 
|-
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|[[Divine metal]]||Metal||1000||Second least dense metal, about 86.6% momentum on attacks
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|[[Divine metal]]||Metal||1000||Second least dense metal
 
|-
 
|-
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|[[Glumprong]]||Wood||1200||Densest above-ground wood ''(by far)'', found only in evil biomes
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|[[Glumprong]]||Wood||1200||Densest above-ground wood ''(by far)'', found only in dry, evil biomes
 
|-
 
|-
 
|[[Blood thorn]]||Wood||1250||Densest wood, underground, found only in caverns
 
|[[Blood thorn]]||Wood||1250||Densest wood, underground, found only in caverns
 
|-
 
|-
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|[[Lignite]]||Stone||1250||
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|[[Lignite]]||Stone||1250
 
|-
 
|-
 
|[[Jet]]||Stone||1320||Least dense non-economic stone
 
|[[Jet]]||Stone||1320||Least dense non-economic stone
 
|-
 
|-
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|[[Earthenware]]||Ceramic||1360||
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|[[Earthenware]]||Ceramic||1360
 
|-
 
|-
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|[[Plant fiber|Plant cloth]]||Organics||1520||
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|[[Plant fiber|Plant cloth]]||Organics||1520
 
|-
 
|-
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|[[Stoneware]]||Ceramic||2000||
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|[[Stoneware]]||Ceramic||2000
 
|-
 
|-
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|[[Saltpeter]]||Stone||2105||
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|[[Saltpeter]]||Stone||2105
 
|-
 
|-
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|[[Petrified wood]]||Stone||2200||Least dense "magma-safe" stone
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|[[Gypsum]] relatives||Stone||2300
 
|-
 
|-
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|[[Gypsum]] relatives||Stone||2300||
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|[[Gypsum]]||Stone||2320
 
|-
 
|-
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|[[Gypsum]]||Stone||2320||
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|[[Porcelain]]||Ceramic||2403
 
|-
 
|-
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|[[Porcelain]]||Ceramic||2403||
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|[[Glass]]||Gem||2600
 
|-
 
|-
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|[[Glass]]||Gem||2600||
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|(General) [[stone]]||Stone||2670
 
|-
 
|-
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|(General) [[stone]]||Stone||2670||
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|Ordinary [[gem]]||Gem||2670
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|-
 
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|Ordinary [[gem]]||Gem||2670||
 
 
|-
 
|-
 
|[[Aluminum]]||Metal||2700||Least dense "normal" metal
 
|[[Aluminum]]||Metal||2700||Least dense "normal" metal
 
|-
 
|-
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|[[Limestone]]||Stone||2710||
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|[[Limestone]]||Stone||2710
 
|-
 
|-
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|[[Marble]]||Stone||2780||
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|[[Marble]]||Stone||2780
 
|-
 
|-
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|[[Calcite]]||Stone||2930||
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|[[Dolomite]]||Stone||2850||Least dense "magma-safe" stone
 
|-
 
|-
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|[[Gem|Diamond]] (any)||Gem||3520||
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|[[Calcite]]||Stone||2930
 
|-
 
|-
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|[[Cobaltite]]||Stone||6295||
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|[[Gem|Diamond]] (any)||Gem||3520
 
|-
 
|-
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|[[Zinc]]||Metal||7135||
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|[[Cobaltite]]||Stone||6295
 
|-
 
|-
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|[[Tin]]||Metal||7280||
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|[[Lay pewter]]||Metal||7280
 
|-
 
|-
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|[[Lay pewter]]||Metal||7280||
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|[[Galena]]||Metal||7500|| Ore of [[lead]]
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|-
 
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|[[Galena]]||Stone||7500|| Ore of [[lead]]
 
 
|-
 
|-
 
|[[Pitchblende]]||Stone||7600||Most dense "magma-safe" stone
 
|[[Pitchblende]]||Stone||7600||Most dense "magma-safe" stone
 
|-
 
|-
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|[[Iron]]||Metal||7850||98.125% max momentum
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|[[Iron]]||Metal||7850
 
|-
 
|-
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|[[Steel]]||Metal||7850||98.125% max momentum
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|[[Steel]]||Metal||7850
 
|-
 
|-
 
|[[Cinnabar]]||Stone||8100||Densest non-economic stone
 
|[[Cinnabar]]||Stone||8100||Densest non-economic stone
 
|-
 
|-
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|[[Bronze]]||Metal||8250||98.2% max momentum
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|[[Bronze]]||Metal||8250
 
|-
 
|-
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|[[Nickel]]||Metal||8800||
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|[[Copper]]||Metal||8930
 
|-
 
|-
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|[[Copper]]||Metal||8930||98.35% max momentum
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|[[Silver]]||Metal||10490
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|-
 
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|[[Silver]]||Metal||10490||98.59% max momentum
 
 
|-
 
|-
 
|[[Lead]]||Metal||11340||  
 
|[[Lead]]||Metal||11340||  
 
|-
 
|-
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|[[Gold]]||Metal||19320||
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|[[Gold]]||Metal||19320
 
|-
 
|-
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|[[Platinum]]||Metal||21400||Densest metal, 99.3% max momentum
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|[[Platinum]]||Metal||21400||Densest metal
 
|-
 
|-
 
|[[Native platinum]]||Stone||21400||Densest [[economic]] stone (and [[ore]])
 
|[[Native platinum]]||Stone||21400||Densest [[economic]] stone (and [[ore]])
 
|-
 
|-
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|[[Slade]]||Stone||200,000||Densest stone, difficult to mine, brutally slow to carry if you do
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|[[Slade]]||Stone||200000
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||Densest stone, difficult to mine
 
|-
 
|-
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|}
 
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==See also==
 
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* [[Size]]
 
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* [[Weight]]
 
  
 
{{Category|Physics}}
 
{{Category|Physics}}

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