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Fusion and Evaporation Heat of common Materials

Melting points, heat of fusions, boiling points and heat to evaporate common substances - like hydrogen, water, gold and more ..

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Substance
(at 1 atm)
Melting Point1)
- Tm -
(K)
Heat of Fusion2)
- Lf -
(kcal/kg)
Boiling Point3)
- Tb -
(K)
Heat of Evaporation4)
- Lv -
(kcal/kg)
Aluminum 932 94.5 2740 2500
Bismuth 544 12.5 1193 190
Bromine 266 16 333 43
Copper 1359 32.0 1460 1210
Ethyl Alcohol 159 24.9 351 205
Gold 1336 15.4 2933 377
Hydrogen 13.8 14.0 20.3 108
Iron 1808 69.1 3023 1520
Lead 600 5.9 2023 208
Lithium 459 160 1609 511
Mercury 234 2.7 630 70.0
Nitrogen 63.3 6.1 77.3 48.0
Oxygen 54.4 3.3 90.2 50.9
Sulfuric acid 282 39 599 122
Water 273.15 79.7 373.15 539
Zinc 693 24 1191 475

1) The melting point of a solid is the temperature at which it changes state from solid to fluid.

2) Heat of fusion is the thermal energy which must be withdrawn to solidify a certain mass or quantity of fluid or added to melt a certain mass or quantity of solid. It is also called the latent heat of fusion or the enthalpy of fusion, and the temperature at which it occurs is called the melting point.

3) The boiling point of a substance is the temperature at which it can change state from a liquid to a gas throughout the bulk of the liquid.

4) Heat of evaporation describes the amount of energy in the form of heat that is required for a material to undergo a change of phase from fluid to gas.

  • 1 kcal/kg = 1 cal/g = 4.1868 kJ/kg = 1.8 Btu/lbm
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