Metals - Latent Heat of Melting

Metals and their latent heat of fusion.

The Latent Heat of Fusion is the heat supplied to a solid body at the melting point when it changes state from solid to liquid.

Latent heat of fusion for some metals are indicated below:

Metals - Latent Heat of Fusion
Metal	Symbol	Atomic Weight (g/mol)	Latent Heat of Melting
Metal	Symbol	Atomic Weight (g/mol)	(kJ/mol)	(kJ/kg)
Aluminum	Al	27	10.7	396
Antimony	Sb	122	19.7	161
Beryllium	Be	9.1	7.95	1356
Bismuth	Bi	209	10.9	52.2
Cadmium	Cd	112	6.3	56
Chromium	Cr	52.0	20.5	394
Cobalt	Co	58.9	16.2	275
Copper	Cu	63.5	13.1	206
Gold	Au	197	12.5	63
Iridium	Ir	192	26	135
Iron	Fe	55.8	13.8	247
Lead	Pb	207	4.77	23
Magnesium	Mg	24.3	8.7	358
Manganese	Mn	54.9	13.2	240
Mercury	Hg	201	2.29	11.4
Molybdenum	Mo	95.9	36	375
Nickel	Ni	58.7	17.2	293
Niobium	Nb	92.9	26.8	288
Osmium	Os	190	31	163
Platinum	Pt	195	20	103
Plutonium	Pu	244
Potassium	K	39.1	2.33	56
Rhodium	Rh	103	21.7	211
Selenium	Se	79	5.4	68
Silicon	Si	28.1	50.2	1787
Silver	Ag	108	11.3	105
Sodium	Na	23	2.6	113
Tantalum	Ta	271	36	199
Thorium	Th	232	16	69
Tin	Sn	119	7	59
Titanium	Ti	47.9	18.7	390
Tungsten	W	184	35	190
Uranium	U	238	14	59
Vanadium	V	50.9	22.8	448
Zinc	Zn	65.4	7.35	112

1 kJ/kg = 0.23884 cal/g = 0.23884 kcal/kg = 0.4299 Btu/lb_m

Latent heat of fusion is calculated as

L = 1000 L_mol/ A (1)

where

L = latent heat of fusion (kJ/kg)

L_mol = latent heat of fusion (kJ/mol)

A = atomic weight (g/mol)

Note that atomic mass and atomic weight are two different things. Atomic mass is the mass of an individual element. Atomic weight is the average mass of all the isotopes of an element. Force is not involved.