Attempt 1:
Let's try modify the steel, by adjusting its boiling point to be lower than melting point, at room temperature.
It should evaporate at room temperature now. I set the HEATDAM_POINT to NONE, let's see if the steel will "gas-out" or not.
[INORGANIC:STEEL]
[USE_MATERIAL_TEMPLATE:METAL_TEMPLATE]
[STATE_NAME_ADJ:ALL_SOLID:steel]
[STATE_NAME_ADJ:LIQUID:molten steel]
[STATE_NAME_ADJ:GAS:boiling steel]
[DISPLAY_COLOR:0:7:1]
[MATERIAL_VALUE:30]
[SPEC_HEAT:500]
[MELTING_POINT:12718]
[BOILING_POINT:10048]
[HEATDAM_POINT:NONE]
[ITEMS_WEAPON]
[ITEMS_WEAPON_RANGED]
[ITEMS_AMMO]
[ITEMS_DIGGER]
[ITEMS_ARMOR]
[ITEMS_ANVIL]
[SOLID_DENSITY:7850]
[LIQUID_DENSITY:6980]
[MOLAR_MASS:55845]
[IMPACT_YIELD:1505000]
[IMPACT_FRACTURE:2520000]
[IMPACT_STRAIN_AT_YIELD:940]
[COMPRESSIVE_YIELD:1505000]
[COMPRESSIVE_FRACTURE:2520000]
[COMPRESSIVE_STRAIN_AT_YIELD:940] 160
[TENSILE_YIELD:430000]
[TENSILE_FRACTURE:720000]
[TENSILE_STRAIN_AT_YIELD:225] 200
[TORSION_YIELD:430000]
[TORSION_FRACTURE:720000]
[TORSION_STRAIN_AT_YIELD:215]
[SHEAR_YIELD:430000]
[SHEAR_FRACTURE:720000]
[SHEAR_STRAIN_AT_YIELD:215] no data, used 200
[BENDING_YIELD:430000]
[BENDING_FRACTURE:720000]
[BENDING_STRAIN_AT_YIELD:215]
[MAX_EDGE:10000]
[ITEMS_HARD]
[ITEMS_METAL]
[ITEMS_BARRED]
[ITEMS_SCALED]
EDIT:
I used copper in my testing...and sadly it doesn't work. Even with HEATDAM_POINT set to none, the copper picks i embark with evaporate into nothingness almost immediately.