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Properties of Molten Metals

Properties of Molten Metals

Data given for selected metals for thermal conductivity, density, specific heat, viscosity at bulk temperature.

Where:

k = thermal conductivity, Btu/h · ft · °F
ρ = density
c_p = specific heat at constant pressure, Btu/ lb · °F
µ = viscosity at bulk temperature, lbm/h · ft; equals 2.42 times centipoises; equals 116,000 times viscosity in (lb force)(s)/ft²

Metal (melting point)	Temperature, °F	k, Btu / (h)(ft)(°F)	ρ lb / cu ft	cp Btu\ (lb)(°F)	µ lbm / (ft)(h)
Bismuth (520°F)	600	9.5	625	0.0345	3.92
	1,000	9.0	608	0.0369	2.66
	1,400	9.0	591	0.0393	1.91
Lead (621°F)	700	10.5	658	0.038	5.80
	900	11.4	650	0.037	4.65
	1,300	—	633	—	3.31
Mercury (- 38°F)	50	4.7	847	0.033	3.85
	300	6.7	826	0.033	2.66
	600	8.1	802	0.032	2.09
Potassium (147°F)	300	26.0	50.4	0.19	0.90
	800	22.8	46.3	0.18	0.43
	1,300	19.1	42.1	0.18	0.31
Sodium (208°F)	200	49.8	58.0	0.33	1.69
	700	41.8	53.7	0.31	0.68
	1,300	34.5	48.6	0.30	0.43
Na, 56 wt % K, 44 wt % (66.2°F)	200	14.8	55.4	0.270	1.40
	700	15.9	51.3	0.252	0.570
	1,300	16.7	46.2	0.249	0.389
Na, 22 wt % K, 78 wt % (12°F)	200	14.1	53.0	0.226	1.19
	750	15.4	48.4	0.210	0.500
	1,400	—	43.1	0.211	0.353
Pb, 44.5 wt % Bi, 55.5 wt % (257°F)	300	5.23	657	0.035
	700	6.85	639	0.035	3.71
	1,200	—	614	—	2.78

Source:

Based largely on ‘‘Liquid-Metals Handbook,’’ 2d ed., Government Printing Office, Washington.

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