Flammability
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Flammability is a stat: How easily an object catches fire and how strongly it burns. Its minimum allowed value is 0%. Its maximum allowed value is 500%. Its default value is 0%.
Pawns, including both humans and animals, generally have a base flammability of 70%. Mechanoids have a base flammability of 0%.
Phoenix armor 
reduces the flammability of its wearer by 68%.
For specifics on the process by which flammability affects the likelihood of being set on fire, see Flame.
Note that having a flammability of 0% only prevents the item/pawn/etc catching on fire, it does not prevent taking Flame damage. For example, while a stone wall will not be ignited by molotov cocktails, and won't continue to burn, it will take the 10 flame damage from the initial attack. Similarly, a pawn requires Armor - Heat to actually mitigate flame damage taken.
Some things, such as the buildings found in mech clusters , have both a flammability of 0% and are immune to flame damage but these are separate effects.
Materials
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An item can have different flammability depending on the material chosen to make it. Surprisingly steel, silver and gold structures like walls and doors are flammable. However raw steel, silver and gold are not.
Stats table
 Wall
|
Beauty | Work to Build | HP | Flammability | Market Value |
|---|---|---|---|---|---|
| Material | |||||
 Bioferrite  |
0 | 338 ticks (5.63 secs) | 600 | 75% | 4.95  |
 Gold |
20 | 122 ticks (2.03 secs) | 180 | 40% | 500 |
 Granite blocks |
0 | 950 ticks (15.83 secs) | 510 | 0% | 7.9 |
 Limestone blocks |
0 | 950 ticks (15.83 secs) | 465 | 0% | 7.9 |
 Marble blocks |
1 | 883 ticks (14.72 secs) | 360 | 0% | 7.7 |
 Plasteel |
0 | 297 ticks (4.95 secs) | 840 | 0% | 46 |
 Sandstone blocks |
0 | 815 ticks (13.58 secs) | 420 | 0% | 7.4 |
| Silver |
6 | 135 ticks (2.25 secs) | 210 | 40% | 51 |
 Slate blocks |
0 | 950 ticks (15.83 secs) | 390 | 0% | 7.9 |
 Steel |
0 | 135 ticks (2.25 secs) | 300 | 40% | 10 |
 Jade |
10 | 675 ticks (11.25 secs) | 150 | 0% | 27 |
 Uranium |
0 | 257 ticks (4.28 secs) | 750 | 0% | 31 |
 Wood |
0 | 95 ticks (1.58 secs) | 195 | 100% | 6.3 |
Stats table
 Door
|
Beauty | Work to Build | HP | Flammability | Door Speed |
Market Value |
|---|---|---|---|---|---|---|
| Material | ||||||
| Bioferrite |
0 | 2,125 ticks (35.42 secs) | 320 | 75% | 100% | 26 |
| Gold |
20 | 765 ticks (12.75 secs) | 96 | 40% | 100% | 2,505 |
| Granite blocks |
0 | 5,240 ticks (1.46 mins) | 272 | 0% | 45% | 41 |
| Limestone blocks |
0 | 5,240 ticks (1.46 mins) | 248 | 0% | 45% | 41 |
| Marble blocks |
1 | 4,815 ticks (1.34 mins) | 192 | 0% | 45% | 40 |
| Plasteel |
0 | 1,870 ticks (31.17 secs) | 448 | 0% | 100% | 230 |
| Sandstone blocks |
0 | 4,390 ticks (1.22 mins) | 224 | 0% | 45% | 38 |
| Silver |
6 | 850 ticks (14.17 secs) | 112 | 40% | 100% | 255 |
| Slate blocks |
0 | 5,240 ticks (1.46 mins) | 208 | 0% | 45% | 41 |
| Steel |
0 | 850 ticks (14.17 secs) | 160 | 40% | 100% | 51 |
| Jade |
10 | 4,250 ticks (1.18 mins) | 80 | 0% | 100% | 140 |
| Uranium |
0 | 1,615 ticks (26.92 secs) | 400 | 0% | 75% | 156 |
| Wood |
0 | 595 ticks (9.92 secs) | 104 | 100% | 120% | 32 |